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chromium / external / github.com / kripken / emscripten / refs/heads/add_python2_warning / . / src / library_webgl.js
blob: 5723cd96a687e8c86c815cc87743465a7b519322 [file] [log] [blame] [edit]
/*
* Copyright 2010 The Emscripten Authors. All rights reserved.
* Emscripten is available under two separate licenses, the MIT license and the
* University of Illinois/NCSA Open Source License. Both these licenses can be
* found in the LICENSE file.
*
* GL support. See http://kripken.github.io/emscripten-site/docs/porting/multimedia_and_graphics/OpenGL-support.html
* for current status.
*/
var LibraryGL = {
// For functions such as glDrawBuffers, glInvalidateFramebuffer and glInvalidateSubFramebuffer that need to pass a short array to the WebGL API,
// create a set of short fixed-length arrays to avoid having to generate any garbage when calling those functions.
_tempFixedLengthArray__postset: 'for (var i = 0; i < 32; i++) __tempFixedLengthArray.push(new Array(i));',
_tempFixedLengthArray: [],
_heapObjectForWebGLType: function(type) {
// Micro-optimization for size: Subtract lowest GL enum number (0x1400/* GL_BYTE */) from type to compare
// smaller values for the heap, for shorter generated code size.
// Also the type HEAPU16 is not tested for explicitly, but any unrecognized type will return out HEAPU16.
// (since most types are HEAPU16)
type -= 0x1400;
#if MAX_WEBGL_VERSION >= 2
if (type == {{{ 0x1400 - 0x1400/* GL_BYTE */ }}}) return HEAP8;
#endif
if (type == {{{ 0x1401 - 0x1400/* GL_UNSIGNED_BYTE */ }}}) return HEAPU8;
#if MAX_WEBGL_VERSION >= 2
if (type == {{{ 0x1402 - 0x1400/* GL_SHORT */ }}}) return HEAP16;
#endif
if (type == {{{ 0x1404 - 0x1400/* GL_INT */ }}}) return HEAP32;
if (type == {{{ 0x1406 - 0x1400/* GL_FLOAT */ }}}) return HEAPF32;
if (type == {{{ 0x1405 - 0x1400 /* GL_UNSIGNED_INT */ }}}
|| type == {{{ 0x84FA - 0x1400 /* GL_UNSIGNED_INT_24_8_WEBGL/GL_UNSIGNED_INT_24_8 */ }}}
#if MAX_WEBGL_VERSION >= 2
|| type == {{{ 0x8368 - 0x1400 /* GL_UNSIGNED_INT_2_10_10_10_REV */ }}}
|| type == {{{ 0x8C3B - 0x1400 /* GL_UNSIGNED_INT_10F_11F_11F_REV */ }}}
|| type == {{{ 0x8C3E - 0x1400 /* GL_UNSIGNED_INT_5_9_9_9_REV */ }}}
#endif
)
return HEAPU32;
#if GL_ASSERTIONS
if (type != {{{ 0x1403 - 0x1400 /* GL_UNSIGNED_SHORT */ }}}
#if MAX_WEBGL_VERSION >= 2
&& type != {{{ 0x140B - 0x1400 /* GL_HALF_FLOAT */ }}}
#endif
&& type != {{{ 0x8033 - 0x1400 /* GL_UNSIGNED_SHORT_4_4_4_4 */ }}}
&& type != {{{ 0x8034 - 0x1400 /* GL_UNSIGNED_SHORT_5_5_5_1 */ }}}
&& type != {{{ 0x8363 - 0x1400 /* GL_UNSIGNED_SHORT_5_6_5 */ }}}
&& type != {{{ 0x8D61 - 0x1400 /* GL_HALF_FLOAT_OES */ }}}) {
err('Invalid WebGL type 0x' + (type+0x1400).toString() + ' passed to _heapObjectForWebGLType!');
}
#endif
return HEAPU16;
},
_heapAccessShiftForWebGLHeap: function(heap) {
return 31 - Math.clz32(heap.BYTES_PER_ELEMENT);
},
#if MIN_WEBGL_VERSION == 1
_webgl_acquireInstancedArraysExtension: function(ctx) {
// Extension available in WebGL 1 from Firefox 26 and Google Chrome 30 onwards. Core feature in WebGL 2.
var ext = ctx.getExtension('ANGLE_instanced_arrays');
if (ext) {
ctx['vertexAttribDivisor'] = function(index, divisor) { ext['vertexAttribDivisorANGLE'](index, divisor); };
ctx['drawArraysInstanced'] = function(mode, first, count, primcount) { ext['drawArraysInstancedANGLE'](mode, first, count, primcount); };
ctx['drawElementsInstanced'] = function(mode, count, type, indices, primcount) { ext['drawElementsInstancedANGLE'](mode, count, type, indices, primcount); };
}
},
_webgl_acquireVertexArrayObjectExtension: function(ctx) {
// Extension available in WebGL 1 from Firefox 25 and WebKit 536.28/desktop Safari 6.0.3 onwards. Core feature in WebGL 2.
var ext = ctx.getExtension('OES_vertex_array_object');
if (ext) {
ctx['createVertexArray'] = function() { return ext['createVertexArrayOES'](); };
ctx['deleteVertexArray'] = function(vao) { ext['deleteVertexArrayOES'](vao); };
ctx['bindVertexArray'] = function(vao) { ext['bindVertexArrayOES'](vao); };
ctx['isVertexArray'] = function(vao) { return ext['isVertexArrayOES'](vao); };
}
},
_webgl_acquireDrawBuffersExtension: function(ctx) {
// Extension available in WebGL 1 from Firefox 28 onwards. Core feature in WebGL 2.
var ext = ctx.getExtension('WEBGL_draw_buffers');
if (ext) {
ctx['drawBuffers'] = function(n, bufs) { ext['drawBuffersWEBGL'](n, bufs); };
}
},
#endif
$GL__postset: 'var GLctx; GL.init()',
#if GL_SUPPORT_AUTOMATIC_ENABLE_EXTENSIONS && MIN_WEBGL_VERSION == 1
// If GL_SUPPORT_AUTOMATIC_ENABLE_EXTENSIONS is enabled, GL.initExtensions() will call to initialize these.
$GL__deps: ['_webgl_acquireInstancedArraysExtension', '_webgl_acquireVertexArrayObjectExtension', '_webgl_acquireDrawBuffersExtension'],
#endif
$GL: {
#if GL_DEBUG
debug: true,
#endif
counter: 1, // 0 is reserved as 'null' in gl
#if GL_TRACK_ERRORS
lastError: 0,
#endif
buffers: [],
mappedBuffers: {},
programs: [],
framebuffers: [],
renderbuffers: [],
textures: [],
uniforms: [],
shaders: [],
vaos: [],
contexts: {},
currentContext: null,
offscreenCanvases: {}, // DOM ID -> OffscreenCanvas mappings of <canvas> elements that have their rendering control transferred to offscreen.
timerQueriesEXT: [],
#if MAX_WEBGL_VERSION >= 2
queries: [],
samplers: [],
transformFeedbacks: [],
syncs: [],
#endif
#if FULL_ES2 || LEGACY_GL_EMULATION
currArrayBuffer: 0,
currElementArrayBuffer: 0,
byteSizeByTypeRoot: 0x1400, // GL_BYTE
byteSizeByType: [
1, // GL_BYTE
1, // GL_UNSIGNED_BYTE
2, // GL_SHORT
2, // GL_UNSIGNED_SHORT
4, // GL_INT
4, // GL_UNSIGNED_INT
4, // GL_FLOAT
2, // GL_2_BYTES
3, // GL_3_BYTES
4, // GL_4_BYTES
8 // GL_DOUBLE
],
#endif
programInfos: {}, // Stores additional information needed for each shader program. Each entry is of form:
/* { uniforms: {}, // Maps ints back to the opaque WebGLUniformLocation objects.
maxUniformLength: int, // Cached in order to implement glGetProgramiv(GL_ACTIVE_UNIFORM_MAX_LENGTH)
maxAttributeLength: int // Cached in order to implement glGetProgramiv(GL_ACTIVE_ATTRIBUTE_MAX_LENGTH)
maxUniformBlockNameLength: int // Cached in order to implement glGetProgramiv(GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH)
} */
stringCache: {},
#if MAX_WEBGL_VERSION >= 2
stringiCache: {},
#endif
unpackAlignment: 4, // default alignment is 4 bytes
init: function() {
#if GL_POOL_TEMP_BUFFERS
var miniTempFloatBuffer = new Float32Array(GL.MINI_TEMP_BUFFER_SIZE);
for (var i = 0; i < GL.MINI_TEMP_BUFFER_SIZE; i++) {
GL.miniTempBufferFloatViews[i] = miniTempFloatBuffer.subarray(0, i+1);
}
var miniTempIntBuffer = new Int32Array(GL.MINI_TEMP_BUFFER_SIZE);
for (var i = 0; i < GL.MINI_TEMP_BUFFER_SIZE; i++) {
GL.miniTempBufferIntViews[i] = miniTempIntBuffer.subarray(0, i+1);
}
#endif
},
// Records a GL error condition that occurred, stored until user calls glGetError() to fetch it. As per GLES2 spec, only the first error
// is remembered, and subsequent errors are discarded until the user has cleared the stored error by a call to glGetError().
recordError: function recordError(errorCode) {
#if GL_TRACK_ERRORS
if (!GL.lastError) {
GL.lastError = errorCode;
}
#endif
},
// Get a new ID for a texture/buffer/etc., while keeping the table dense and fast. Creation is fairly rare so it is worth optimizing lookups later.
getNewId: function(table) {
var ret = GL.counter++;
for (var i = table.length; i < ret; i++) {
table[i] = null;
}
return ret;
},
#if GL_POOL_TEMP_BUFFERS
// Mini temp buffer
MINI_TEMP_BUFFER_SIZE: 256,
miniTempBufferFloatViews: [0], // index i has the view of size i+1
miniTempBufferIntViews: [0], // index i has the view of size i+1
#endif
#if FULL_ES2 || LEGACY_GL_EMULATION
// When user GL code wants to render from client-side memory, we need to upload the vertex data to a temp VBO
// for rendering. Maintain a set of temp VBOs that are created-on-demand to appropriate sizes, and never destroyed.
// Also, for best performance the VBOs are double-buffered, i.e. every second frame we switch the set of VBOs we
// upload to, so that rendering from the previous frame is not disturbed by uploading from new data to it, which
// could cause a GPU-CPU pipeline stall.
// Note that index buffers are not double-buffered (at the moment) in this manner.
MAX_TEMP_BUFFER_SIZE: {{{ GL_MAX_TEMP_BUFFER_SIZE }}},
// Maximum number of temp VBOs of one size to maintain, after that we start reusing old ones, which is safe but can give
// a performance impact. If CPU-GPU stalls are a problem, increasing this might help.
numTempVertexBuffersPerSize: 64, // (const)
// Precompute a lookup table for the function ceil(log2(x)), i.e. how many bits are needed to represent x, or,
// if x was rounded up to next pow2, which index is the single '1' bit at?
// Then log2ceilLookup[x] returns ceil(log2(x)).
log2ceilLookup: function(i) {
return 32 - Math.clz32(i-1);
},
generateTempBuffers: function(quads, context) {
var largestIndex = GL.log2ceilLookup(GL.MAX_TEMP_BUFFER_SIZE);
context.tempVertexBufferCounters1 = [];
context.tempVertexBufferCounters2 = [];
context.tempVertexBufferCounters1.length = context.tempVertexBufferCounters2.length = largestIndex+1;
context.tempVertexBuffers1 = [];
context.tempVertexBuffers2 = [];
context.tempVertexBuffers1.length = context.tempVertexBuffers2.length = largestIndex+1;
context.tempIndexBuffers = [];
context.tempIndexBuffers.length = largestIndex+1;
for (var i = 0; i <= largestIndex; ++i) {
context.tempIndexBuffers[i] = null; // Created on-demand
context.tempVertexBufferCounters1[i] = context.tempVertexBufferCounters2[i] = 0;
var ringbufferLength = GL.numTempVertexBuffersPerSize;
context.tempVertexBuffers1[i] = [];
context.tempVertexBuffers2[i] = [];
var ringbuffer1 = context.tempVertexBuffers1[i];
var ringbuffer2 = context.tempVertexBuffers2[i];
ringbuffer1.length = ringbuffer2.length = ringbufferLength;
for (var j = 0; j < ringbufferLength; ++j) {
ringbuffer1[j] = ringbuffer2[j] = null; // Created on-demand
}
}
if (quads) {
// GL_QUAD indexes can be precalculated
context.tempQuadIndexBuffer = GLctx.createBuffer();
context.GLctx.bindBuffer(0x8893 /*GL_ELEMENT_ARRAY_BUFFER*/, context.tempQuadIndexBuffer);
var numIndexes = GL.MAX_TEMP_BUFFER_SIZE >> 1;
var quadIndexes = new Uint16Array(numIndexes);
var i = 0, v = 0;
while (1) {
quadIndexes[i++] = v;
if (i >= numIndexes) break;
quadIndexes[i++] = v+1;
if (i >= numIndexes) break;
quadIndexes[i++] = v+2;
if (i >= numIndexes) break;
quadIndexes[i++] = v;
if (i >= numIndexes) break;
quadIndexes[i++] = v+2;
if (i >= numIndexes) break;
quadIndexes[i++] = v+3;
if (i >= numIndexes) break;
v += 4;
}
context.GLctx.bufferData(0x8893 /*GL_ELEMENT_ARRAY_BUFFER*/, quadIndexes, 0x88E4 /*GL_STATIC_DRAW*/);
context.GLctx.bindBuffer(0x8893 /*GL_ELEMENT_ARRAY_BUFFER*/, null);
}
},
getTempVertexBuffer: function getTempVertexBuffer(sizeBytes) {
var idx = GL.log2ceilLookup(sizeBytes);
var ringbuffer = GL.currentContext.tempVertexBuffers1[idx];
var nextFreeBufferIndex = GL.currentContext.tempVertexBufferCounters1[idx];
GL.currentContext.tempVertexBufferCounters1[idx] = (GL.currentContext.tempVertexBufferCounters1[idx]+1) & (GL.numTempVertexBuffersPerSize-1);
var vbo = ringbuffer[nextFreeBufferIndex];
if (vbo) {
return vbo;
}
var prevVBO = GLctx.getParameter(0x8894 /*GL_ARRAY_BUFFER_BINDING*/);
ringbuffer[nextFreeBufferIndex] = GLctx.createBuffer();
GLctx.bindBuffer(0x8892 /*GL_ARRAY_BUFFER*/, ringbuffer[nextFreeBufferIndex]);
GLctx.bufferData(0x8892 /*GL_ARRAY_BUFFER*/, 1 << idx, 0x88E8 /*GL_DYNAMIC_DRAW*/);
GLctx.bindBuffer(0x8892 /*GL_ARRAY_BUFFER*/, prevVBO);
return ringbuffer[nextFreeBufferIndex];
},
getTempIndexBuffer: function getTempIndexBuffer(sizeBytes) {
var idx = GL.log2ceilLookup(sizeBytes);
var ibo = GL.currentContext.tempIndexBuffers[idx];
if (ibo) {
return ibo;
}
var prevIBO = GLctx.getParameter(0x8895 /*ELEMENT_ARRAY_BUFFER_BINDING*/);
GL.currentContext.tempIndexBuffers[idx] = GLctx.createBuffer();
GLctx.bindBuffer(0x8893 /*GL_ELEMENT_ARRAY_BUFFER*/, GL.currentContext.tempIndexBuffers[idx]);
GLctx.bufferData(0x8893 /*GL_ELEMENT_ARRAY_BUFFER*/, 1 << idx, 0x88E8 /*GL_DYNAMIC_DRAW*/);
GLctx.bindBuffer(0x8893 /*GL_ELEMENT_ARRAY_BUFFER*/, prevIBO);
return GL.currentContext.tempIndexBuffers[idx];
},
// Called at start of each new WebGL rendering frame. This swaps the doublebuffered temp VB memory pointers,
// so that every second frame utilizes different set of temp buffers. The aim is to keep the set of buffers
// being rendered, and the set of buffers being updated disjoint.
newRenderingFrameStarted: function newRenderingFrameStarted() {
if (!GL.currentContext) {
return;
}
var vb = GL.currentContext.tempVertexBuffers1;
GL.currentContext.tempVertexBuffers1 = GL.currentContext.tempVertexBuffers2;
GL.currentContext.tempVertexBuffers2 = vb;
vb = GL.currentContext.tempVertexBufferCounters1;
GL.currentContext.tempVertexBufferCounters1 = GL.currentContext.tempVertexBufferCounters2;
GL.currentContext.tempVertexBufferCounters2 = vb;
var largestIndex = GL.log2ceilLookup(GL.MAX_TEMP_BUFFER_SIZE);
for (var i = 0; i <= largestIndex; ++i) {
GL.currentContext.tempVertexBufferCounters1[i] = 0;
}
},
#endif
getSource: function(shader, count, string, length) {
var source = '';
for (var i = 0; i < count; ++i) {
var len = length ? {{{ makeGetValue('length', 'i*4', 'i32') }}} : -1;
source += UTF8ToString({{{ makeGetValue('string', 'i*4', 'i32') }}}, len < 0 ? undefined : len);
}
#if LEGACY_GL_EMULATION
// Let's see if we need to enable the standard derivatives extension
var type = GLctx.getShaderParameter(GL.shaders[shader], 0x8B4F /* GL_SHADER_TYPE */);
if (type == 0x8B30 /* GL_FRAGMENT_SHADER */) {
if (GLEmulation.findToken(source, "dFdx") ||
GLEmulation.findToken(source, "dFdy") ||
GLEmulation.findToken(source, "fwidth")) {
source = "#extension GL_OES_standard_derivatives : enable\n" + source;
var extension = GLctx.getExtension("OES_standard_derivatives");
#if GL_DEBUG
if (!extension) {
err("Shader attempts to use the standard derivatives extension which is not available.");
}
#endif
}
}
#endif
return source;
},
#if GL_FFP_ONLY
enabledClientAttribIndices: [],
enableVertexAttribArray: function enableVertexAttribArray(index) {
if (!GL.enabledClientAttribIndices[index]) {
GL.enabledClientAttribIndices[index] = true;
GLctx.enableVertexAttribArray(index);
}
},
disableVertexAttribArray: function disableVertexAttribArray(index) {
if (GL.enabledClientAttribIndices[index]) {
GL.enabledClientAttribIndices[index] = false;
GLctx.disableVertexAttribArray(index);
}
},
#endif
#if FULL_ES2
calcBufLength: function calcBufLength(size, type, stride, count) {
if (stride > 0) {
return count * stride; // XXXvlad this is not exactly correct I don't think
}
var typeSize = GL.byteSizeByType[type - GL.byteSizeByTypeRoot];
return size * typeSize * count;
},
usedTempBuffers: [],
preDrawHandleClientVertexAttribBindings: function preDrawHandleClientVertexAttribBindings(count) {
GL.resetBufferBinding = false;
// TODO: initial pass to detect ranges we need to upload, might not need an upload per attrib
for (var i = 0; i < GL.currentContext.maxVertexAttribs; ++i) {
var cb = GL.currentContext.clientBuffers[i];
if (!cb.clientside || !cb.enabled) continue;
GL.resetBufferBinding = true;
var size = GL.calcBufLength(cb.size, cb.type, cb.stride, count);
var buf = GL.getTempVertexBuffer(size);
GLctx.bindBuffer(0x8892 /*GL_ARRAY_BUFFER*/, buf);
GLctx.bufferSubData(0x8892 /*GL_ARRAY_BUFFER*/,
0,
HEAPU8.subarray(cb.ptr, cb.ptr + size));
#if GL_ASSERTIONS
GL.validateVertexAttribPointer(cb.size, cb.type, cb.stride, 0);
#endif
cb.vertexAttribPointerAdaptor.call(GLctx, i, cb.size, cb.type, cb.normalized, cb.stride, 0);
}
},
postDrawHandleClientVertexAttribBindings: function postDrawHandleClientVertexAttribBindings() {
if (GL.resetBufferBinding) {
GLctx.bindBuffer(0x8892 /*GL_ARRAY_BUFFER*/, GL.buffers[GL.currArrayBuffer]);
}
},
#endif
#if GL_ASSERTIONS
validateGLObjectID: function(objectHandleArray, objectID, callerFunctionName, objectReadableType) {
if (objectID != 0) {
if (objectHandleArray[objectID] === null) {
console.error(callerFunctionName + ' called with an already deleted ' + objectReadableType + ' ID ' + objectID + '!');
} else if (!objectHandleArray[objectID]) {
console.error(callerFunctionName + ' called with an invalid ' + objectReadableType + ' ID ' + objectID + '!');
}
}
},
// Validates that user obeys GL spec #6.4: http://www.khronos.org/registry/webgl/specs/latest/1.0/#6.4
validateVertexAttribPointer: function(dimension, dataType, stride, offset) {
var sizeBytes = 1;
switch(dataType) {
case 0x1400 /* GL_BYTE */:
case 0x1401 /* GL_UNSIGNED_BYTE */:
sizeBytes = 1;
break;
case 0x1402 /* GL_SHORT */:
case 0x1403 /* GL_UNSIGNED_SHORT */:
sizeBytes = 2;
break;
case 0x1404 /* GL_INT */:
case 0x1405 /* GL_UNSIGNED_INT */:
case 0x1406 /* GL_FLOAT */:
sizeBytes = 4;
break;
case 0x140A /* GL_DOUBLE */:
sizeBytes = 8;
break;
default:
#if MAX_WEBGL_VERSION >= 2
if (GL.currentContext.version >= 2) {
if (dataType == 0x8368 /* GL_UNSIGNED_INT_2_10_10_10_REV */ || dataType == 0x8D9F /* GL_INT_2_10_10_10_REV */) {
sizeBytes = 4;
break;
} else if (dataType == 0x140B /* GL_HALF_FLOAT */) {
sizeBytes = 2;
break;
} else {
// else fall through
}
}
#endif
console.error('Invalid vertex attribute data type GLenum ' + dataType + ' passed to GL function!');
}
if (dimension == 0x80E1 /* GL_BGRA */) {
console.error('WebGL does not support size=GL_BGRA in a call to glVertexAttribPointer! Please use size=4 and type=GL_UNSIGNED_BYTE instead!');
} else if (dimension < 1 || dimension > 4) {
console.error('Invalid dimension='+dimension+' in call to glVertexAttribPointer, must be 1,2,3 or 4.');
}
if (stride < 0 || stride > 255) {
console.error('Invalid stride='+stride+' in call to glVertexAttribPointer. Note that maximum supported stride in WebGL is 255!');
}
if (offset % sizeBytes != 0) {
console.error('GL spec section 6.4 error: vertex attribute data offset of ' + offset + ' bytes should have been a multiple of the data type size that was used: GLenum ' + dataType + ' has size of ' + sizeBytes + ' bytes!');
}
if (stride % sizeBytes != 0) {
console.error('GL spec section 6.4 error: vertex attribute data stride of ' + stride + ' bytes should have been a multiple of the data type size that was used: GLenum ' + dataType + ' has size of ' + sizeBytes + ' bytes!');
}
},
#endif
#if TRACE_WEBGL_CALLS
webGLFunctionLengths: { 'getContextAttributes': 0, 'isContextLost': 0, 'getSupportedExtensions': 0, 'createBuffer': 0, 'createFramebuffer': 0, 'createProgram': 0, 'createRenderbuffer': 0, 'createTexture': 0, 'finish': 0, 'flush': 0, 'getError': 0, 'createVertexArray': 0, 'createQuery': 0, 'createSampler': 0, 'createTransformFeedback': 0, 'endTransformFeedback': 0, 'pauseTransformFeedback': 0, 'resumeTransformFeedback': 0, 'commit': 0,
'getExtension': 1, 'activeTexture': 1, 'blendEquation': 1, 'checkFramebufferStatus': 1, 'clear': 1, 'clearDepth': 1, 'clearStencil': 1, 'compileShader': 1, 'createShader': 1, 'cullFace': 1, 'deleteBuffer': 1, 'deleteFramebuffer': 1, 'deleteProgram': 1, 'deleteRenderbuffer': 1, 'deleteShader': 1, 'deleteTexture': 1, 'depthFunc': 1, 'depthMask': 1, 'disable': 1, 'disableVertexAttribArray': 1, 'enable': 1, 'enableVertexAttribArray': 1, 'frontFace': 1, 'generateMipmap': 1, 'getAttachedShaders': 1, 'getParameter': 1, 'getProgramInfoLog': 1, 'getShaderInfoLog': 1, 'getShaderSource': 1, 'isBuffer': 1, 'isEnabled': 1, 'isFramebuffer': 1, 'isProgram': 1, 'isRenderbuffer': 1, 'isShader': 1, 'isTexture': 1, 'lineWidth': 1, 'linkProgram': 1, 'stencilMask': 1, 'useProgram': 1, 'validateProgram': 1, 'deleteQuery': 1, 'isQuery': 1, 'deleteVertexArray': 1, 'bindVertexArray': 1, 'isVertexArray': 1, 'drawBuffers': 1, 'readBuffer': 1, 'endQuery': 1, 'deleteSampler': 1, 'isSampler': 1, 'isSync': 1, 'deleteSync': 1, 'deleteTransformFeedback': 1, 'isTransformFeedback': 1, 'beginTransformFeedback': 1,
'attachShader': 2, 'bindBuffer': 2, 'bindFramebuffer': 2, 'bindRenderbuffer': 2, 'bindTexture': 2, 'blendEquationSeparate': 2, 'blendFunc': 2, 'depthRange': 2, 'detachShader': 2, 'getActiveAttrib': 2, 'getActiveUniform': 2, 'getAttribLocation': 2, 'getBufferParameter': 2, 'getProgramParameter': 2, 'getRenderbufferParameter': 2, 'getShaderParameter': 2, 'getShaderPrecisionFormat': 2, 'getTexParameter': 2, 'getUniform': 2, 'getUniformLocation': 2, 'getVertexAttrib': 2, 'getVertexAttribOffset': 2, 'hint': 2, 'pixelStorei': 2, 'polygonOffset': 2, 'sampleCoverage': 2, 'shaderSource': 2, 'stencilMaskSeparate': 2, 'uniform1f': 2, 'uniform1fv': 2, 'uniform1i': 2, 'uniform1iv': 2, 'uniform2fv': 2, 'uniform2iv': 2, 'uniform3fv': 2, 'uniform3iv': 2, 'uniform4fv': 2, 'uniform4iv': 2, 'vertexAttrib1f': 2, 'vertexAttrib1fv': 2, 'vertexAttrib2fv': 2, 'vertexAttrib3fv': 2, 'vertexAttrib4fv': 2, 'vertexAttribDivisor': 2, 'beginQuery': 2, 'invalidateFramebuffer': 2, 'getFragDataLocation': 2, 'uniform1ui': 2, 'uniform1uiv': 2, 'uniform2uiv': 2, 'uniform3uiv': 2, 'uniform4uiv': 2, 'vertexAttribI4iv': 2, 'vertexAttribI4uiv': 2, 'getQuery': 2, 'getQueryParameter': 2, 'bindSampler': 2, 'getSamplerParameter': 2, 'fenceSync': 2, 'getSyncParameter': 2, 'bindTransformFeedback': 2, 'getTransformFeedbackVarying': 2, 'getIndexedParameter': 2, 'getUniformIndices': 2, 'getUniformBlockIndex': 2, 'getActiveUniformBlockName': 2,
'bindAttribLocation': 3, 'bufferData': 3, 'bufferSubData': 3, 'drawArrays': 3, 'getFramebufferAttachmentParameter': 3, 'stencilFunc': 3, 'stencilOp': 3, 'texParameterf': 3, 'texParameteri': 3, 'uniform2f': 3, 'uniform2i': 3, 'uniformMatrix2fv': 3, 'uniformMatrix3fv': 3, 'uniformMatrix4fv': 3, 'vertexAttrib2f': 3, 'getBufferSubData': 3, 'getInternalformatParameter': 3, 'uniform2ui': 3, 'uniformMatrix2x3fv': 3, 'uniformMatrix3x2fv': 3, 'uniformMatrix2x4fv': 3, 'uniformMatrix4x2fv': 3, 'uniformMatrix3x4fv': 3, 'uniformMatrix4x3fv': 3, 'clearBufferiv': 3, 'clearBufferuiv': 3, 'clearBufferfv': 3, 'samplerParameteri': 3, 'samplerParameterf': 3, 'clientWaitSync': 3, 'waitSync': 3, 'transformFeedbackVaryings': 3, 'bindBufferBase': 3, 'getActiveUniforms': 3, 'getActiveUniformBlockParameter': 3, 'uniformBlockBinding': 3,
'blendColor': 4, 'blendFuncSeparate': 4, 'clearColor': 4, 'colorMask': 4, 'drawElements': 4, 'framebufferRenderbuffer': 4, 'renderbufferStorage': 4, 'scissor': 4, 'stencilFuncSeparate': 4, 'stencilOpSeparate': 4, 'uniform3f': 4, 'uniform3i': 4, 'vertexAttrib3f': 4, 'viewport': 4, 'drawArraysInstanced': 4, 'uniform3ui': 4, 'clearBufferfi': 4,
'framebufferTexture2D': 5, 'uniform4f': 5, 'uniform4i': 5, 'vertexAttrib4f': 5, 'drawElementsInstanced': 5, 'copyBufferSubData': 5, 'framebufferTextureLayer': 5, 'renderbufferStorageMultisample': 5, 'texStorage2D': 5, 'uniform4ui': 5, 'vertexAttribI4i': 5, 'vertexAttribI4ui': 5, 'vertexAttribIPointer': 5, 'bindBufferRange': 5,
'texImage2D': 6, 'vertexAttribPointer': 6, 'invalidateSubFramebuffer': 6, 'texStorage3D': 6, 'drawRangeElements': 6,
'compressedTexImage2D': 7, 'readPixels': 7, 'texSubImage2D': 7,
'compressedTexSubImage2D': 8, 'copyTexImage2D': 8, 'copyTexSubImage2D': 8, 'compressedTexImage3D': 8,
'copyTexSubImage3D': 9,
'blitFramebuffer': 10, 'texImage3D': 10, 'compressedTexSubImage3D': 10,
'texSubImage3D': 11 },
hookWebGLFunction: function(f, glCtx) {
var realf = 'real_' + f;
glCtx[realf] = glCtx[f];
var numArgs = GL.webGLFunctionLengths[f]; // On Firefox & Chrome, could do "glCtx[realf].length", but that doesn't work on Edge, which always reports 0.
if (numArgs === undefined) throw 'Unexpected WebGL function ' + f;
var contextHandle = glCtx.canvas.GLctxObject.handle;
var threadId = (typeof _pthread_self !== 'undefined') ? _pthread_self : function() { return 1; };
// Accessing 'arguments' is super slow, so to avoid overhead, statically reason the number of arguments.
switch(numArgs) {
case 0: glCtx[f] = function webgl_0() { var ret = glCtx[realf](); console.error('[Thread ' + threadId() + ', GL ctx: ' + contextHandle + ']: ' + f + '() -> ' + ret); return ret; }; break;
case 1: glCtx[f] = function webgl_1(a1) { var ret = glCtx[realf](a1); console.error('[Thread ' + threadId() + ', GL ctx: ' + contextHandle + ']: ' + f + '('+a1+') -> ' + ret); return ret; }; break;
case 2: glCtx[f] = function webgl_2(a1, a2) { var ret = glCtx[realf](a1, a2); console.error('[Thread ' + threadId() + ', GL ctx: ' + contextHandle + ']: ' + f + '('+a1+', ' + a2 +') -> ' + ret); return ret; }; break;
case 3: glCtx[f] = function webgl_3(a1, a2, a3) { var ret = glCtx[realf](a1, a2, a3); console.error('[Thread ' + threadId() + ', GL ctx: ' + contextHandle + ']: ' + f + '('+a1+', ' + a2 +', ' + a3 +') -> ' + ret); return ret; }; break;
case 4: glCtx[f] = function webgl_4(a1, a2, a3, a4) { var ret = glCtx[realf](a1, a2, a3, a4); console.error('[Thread ' + threadId() + ', GL ctx: ' + contextHandle + ']: ' + f + '('+a1+', ' + a2 +', ' + a3 +', ' + a4 +') -> ' + ret); return ret; }; break;
case 5: glCtx[f] = function webgl_5(a1, a2, a3, a4, a5) { var ret = glCtx[realf](a1, a2, a3, a4, a5); console.error('[Thread ' + threadId() + ', GL ctx: ' + contextHandle + ']: ' + f + '('+a1+', ' + a2 +', ' + a3 +', ' + a4 +', ' + a5 +') -> ' + ret); return ret; }; break;
case 6: glCtx[f] = function webgl_6(a1, a2, a3, a4, a5, a6) { var ret = glCtx[realf](a1, a2, a3, a4, a5, a6); console.error('[Thread ' + threadId() + ', GL ctx: ' + contextHandle + ']: ' + f + '('+a1+', ' + a2 +', ' + a3 +', ' + a4 +', ' + a5 +', ' + a6 +') -> ' + ret); return ret; }; break;
case 7: glCtx[f] = function webgl_7(a1, a2, a3, a4, a5, a6, a7) { var ret = glCtx[realf](a1, a2, a3, a4, a5, a6, a7); console.error('[Thread ' + threadId() + ', GL ctx: ' + contextHandle + ']: ' + f + '('+a1+', ' + a2 +', ' + a3 +', ' + a4 +', ' + a5 +', ' + a6 +', ' + a7 +') -> ' + ret); return ret; }; break;
case 8: glCtx[f] = function webgl_8(a1, a2, a3, a4, a5, a6, a7, a8) { var ret = glCtx[realf](a1, a2, a3, a4, a5, a6, a7, a8); console.error('[Thread ' + threadId() + ', GL ctx: ' + contextHandle + ']: ' + f + '('+a1+', ' + a2 +', ' + a3 +', ' + a4 +', ' + a5 +', ' + a6 +', ' + a7 +', ' + a8 +') -> ' + ret); return ret; }; break;
case 9: glCtx[f] = function webgl_9(a1, a2, a3, a4, a5, a6, a7, a8, a9) { var ret = glCtx[realf](a1, a2, a3, a4, a5, a6, a7, a8, a9); console.error('[Thread ' + threadId() + ', GL ctx: ' + contextHandle + ']: ' + f + '('+a1+', ' + a2 +', ' + a3 +', ' + a4 +', ' + a5 +', ' + a6 +', ' + a7 +', ' + a8 +', ' + a9 +') -> ' + ret); return ret; }; break;
case 10: glCtx[f] = function webgl_10(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10) { var ret = glCtx[realf](a1, a2, a3, a4, a5, a6, a7, a8, a9, a10); console.error('[Thread ' + threadId() + ', GL ctx: ' + contextHandle + ']: ' + f + '('+a1+', ' + a2 +', ' + a3 +', ' + a4 +', ' + a5 +', ' + a6 +', ' + a7 +', ' + a8 +', ' + a9 +', ' + a10 +') -> ' + ret); return ret; }; break;
case 11: glCtx[f] = function webgl_11(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11) { var ret = glCtx[realf](a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11); console.error('[Thread ' + threadId() + ', GL ctx: ' + contextHandle + ']: ' + f + '('+a1+', ' + a2 +', ' + a3 +', ' + a4 +', ' + a5 +', ' + a6 +', ' + a7 +', ' + a8 +', ' + a9 +', ' + a10 +', ' + a11 +') -> ' + ret); return ret; }; break;
default: throw 'hookWebGL failed! Unexpected length ' + glCtx[realf].length;
}
},
hookWebGL: function(glCtx) {
if (!glCtx) glCtx = this.detectWebGLContext();
if (!glCtx) return;
if (!((typeof WebGLRenderingContext !== 'undefined' && glCtx instanceof WebGLRenderingContext)
|| (typeof WebGL2RenderingContext !== 'undefined' && glCtx instanceof WebGL2RenderingContext))) {
return;
}
if (glCtx.webGlTracerAlreadyHooked) return;
glCtx.webGlTracerAlreadyHooked = true;
// Hot GL functions are ones that you'd expect to find during render loops (render calls, dynamic resource uploads), cold GL functions are load time functions (shader compilation, texture/mesh creation)
// Distinguishing between these two allows pinpointing locations of troublesome GL usage that might cause performance issues.
for(var f in glCtx) {
if (typeof glCtx[f] !== 'function' || f.indexOf('real_') == 0) continue;
this.hookWebGLFunction(f, glCtx);
}
// The above injection won't work for texImage2D and texSubImage2D, which have multiple overloads.
glCtx['texImage2D'] = function(a1, a2, a3, a4, a5, a6, a7, a8, a9) {
var ret = (a7 !== undefined) ? glCtx['real_texImage2D'](a1, a2, a3, a4, a5, a6, a7, a8, a9) : glCtx['real_texImage2D'](a1, a2, a3, a4, a5, a6);
return ret;
};
glCtx['texSubImage2D'] = function(a1, a2, a3, a4, a5, a6, a7, a8, a9) {
var ret = (a8 !== undefined) ? glCtx['real_texSubImage2D'](a1, a2, a3, a4, a5, a6, a7, a8, a9) : glCtx['real_texSubImage2D'](a1, a2, a3, a4, a5, a6, a7);
return ret;
};
glCtx['texSubImage3D'] = function(a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11) {
var ret = (a9 !== undefined) ? glCtx['real_texSubImage3D'](a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11) : glCtx['real_texSubImage2D'](a1, a2, a3, a4, a5, a6, a7, a8);
return ret;
};
},
#endif
// Returns the context handle to the new context.
createContext: function(canvas, webGLContextAttributes) {
#if OFFSCREEN_FRAMEBUFFER
// In proxied operation mode, rAF()/setTimeout() functions do not delimit frame boundaries, so can't have WebGL implementation
// try to detect when it's ok to discard contents of the rendered backbuffer.
if (webGLContextAttributes.renderViaOffscreenBackBuffer) webGLContextAttributes['preserveDrawingBuffer'] = true;
#endif
#if GL_TESTING
webGLContextAttributes['preserveDrawingBuffer'] = true;
#endif
#if MAX_WEBGL_VERSION >= 2 && MIN_CHROME_VERSION <= 57
// BUG: Workaround Chrome WebGL 2 issue: the first shipped versions of WebGL 2 in Chrome 57 did not actually implement
// the new garbage free WebGL 2 entry points that take an offset and a length to an existing heap (instead of having to
// create a completely new heap view). In Chrome the entry points only were added in to Chrome 58 and newer. For
// Chrome 57 (and older), disable WebGL 2 support altogether.
function getChromeVersion() {
var chromeVersion = navigator.userAgent.match(/Chrom(e|ium)\/([0-9]+)\./);
if (chromeVersion) return chromeVersion[2]|0;
// If not chrome, fall through to return undefined. (undefined <= integer will yield false)
}
#endif
#if GL_DEBUG
var errorInfo = '?';
function onContextCreationError(event) {
errorInfo = event.statusMessage || errorInfo;
}
canvas.addEventListener('webglcontextcreationerror', onContextCreationError, false);
#endif
#if GL_PREINITIALIZED_CONTEXT
// If WebGL context has already been preinitialized for the page on the JS side, reuse that context instead. This is useful for example when
// the main page precompiles shaders for the application, in which case the WebGL context is created already before any Emscripten compiled
// code has been downloaded.
if (Module['preinitializedWebGLContext']) {
var ctx = Module['preinitializedWebGLContext'];
#if MAX_WEBGL_VERSION >= 2
webGLContextAttributes.majorVersion = (typeof WebGL2RenderingContext !== 'undefined' && ctx instanceof WebGL2RenderingContext) ? 2 : 1;
#else
webGLContextAttributes.majorVersion = 1;
#endif
} else {
#endif
var ctx =
#if MAX_WEBGL_VERSION >= 2
(webGLContextAttributes.majorVersion > 1)
?
#if MIN_CHROME_VERSION <= 57
!(getChromeVersion() <= 57) && canvas.getContext("webgl2", webGLContextAttributes)
#else
canvas.getContext("webgl2", webGLContextAttributes)
#endif
:
#endif
(canvas.getContext("webgl", webGLContextAttributes)
// https://caniuse.com/#feat=webgl
#if MIN_IE_VERSION <= 10 || MIN_EDGE_VERSION <= 18 || MIN_FIREFOX_VERSION <= 23 || MIN_CHROME_VERSION <= 32 || MIN_SAFARI_VERSION <= 70101
|| canvas.getContext("experimental-webgl", webGLContextAttributes)
#endif
);
#if GL_PREINITIALIZED_CONTEXT
}
#endif
#if GL_DEBUG
canvas.removeEventListener('webglcontextcreationerror', onContextCreationError, false);
if (!ctx) {
err('Could not create canvas: ' + [errorInfo, JSON.stringify(webGLContextAttributes)]);
return 0;
}
#else
if (!ctx) return 0;
#endif
var handle = GL.registerContext(ctx, webGLContextAttributes);
#if TRACE_WEBGL_CALLS
GL.hookWebGL(ctx);
#endif
#if GL_DISABLE_HALF_FLOAT_EXTENSION_IF_BROKEN
function disableHalfFloatExtensionIfBroken(ctx) {
var t = ctx.createTexture();
ctx.bindTexture(0xDE1/*GL_TEXTURE_2D*/, t);
for (var i = 0; i < 8 && ctx.getError(); ++i) /*no-op*/;
var ext = ctx.getExtension('OES_texture_half_float');
if (!ext) return; // no half-float extension - nothing needed to fix.
// Bug on Safari on iOS and macOS: texImage2D() and texSubImage2D() do not allow uploading pixel data to half float textures,
// rendering them useless.
// See https://bugs.webkit.org/show_bug.cgi?id=183321, https://bugs.webkit.org/show_bug.cgi?id=169999,
// https://stackoverflow.com/questions/54248633/cannot-create-half-float-oes-texture-from-uint16array-on-ipad
ctx.texImage2D(0xDE1/*GL_TEXTURE_2D*/, 0, 0x1908/*GL_RGBA*/, 1, 1, 0, 0x1908/*GL_RGBA*/, 0x8d61/*HALF_FLOAT_OES*/, new Uint16Array(4));
var broken = ctx.getError();
ctx.bindTexture(0xDE1/*GL_TEXTURE_2D*/, null);
ctx.deleteTexture(t);
if (broken) {
ctx.realGetSupportedExtensions = ctx.getSupportedExtensions;
ctx.getSupportedExtensions = function() {
#if GL_ASSERTIONS
warnOnce('Removed broken support for half-float textures. See e.g. https://bugs.webkit.org/show_bug.cgi?id=183321');
#endif
// .getSupportedExtensions() can return null if context is lost, so coerce to empty array.
return (this.realGetSupportedExtensions() || []).filter(function(ext) {
return ext.indexOf('texture_half_float') == -1;
});
}
}
}
disableHalfFloatExtensionIfBroken(ctx);
#endif
return handle;
},
#if OFFSCREEN_FRAMEBUFFER
enableOffscreenFramebufferAttributes: function(webGLContextAttributes) {
webGLContextAttributes.renderViaOffscreenBackBuffer = true;
webGLContextAttributes.preserveDrawingBuffer = true;
},
// If WebGL is being proxied from a pthread to the main thread, we can't directly render to the WebGL default back buffer
// because of WebGL's implicit swap behavior. Therefore in such modes, create an offscreen render target surface to
// which rendering is performed to, and finally flipped to the main screen.
createOffscreenFramebuffer: function(context) {
var gl = context.GLctx;
// Create FBO
var fbo = gl.createFramebuffer();
gl.bindFramebuffer(0x8D40 /*GL_FRAMEBUFFER*/, fbo);
context.defaultFbo = fbo;
#if MAX_WEBGL_VERSION >= 2
context.defaultFboForbidBlitFramebuffer = false;
if (gl.getContextAttributes().antialias) {
context.defaultFboForbidBlitFramebuffer = true;
}
#if MIN_FIREFOX_VERSION < 67
else {
// The WebGL 2 blit path doesn't work in Firefox < 67 (except in fullscreen).
// https://bugzilla.mozilla.org/show_bug.cgi?id=1523030
var firefoxMatch = navigator.userAgent.toLowerCase().match(/firefox\/(\d\d)/);
if (firefoxMatch != null) {
var firefoxVersion = firefoxMatch[1];
context.defaultFboForbidBlitFramebuffer = firefoxVersion < 67;
}
}
#endif
#endif
// Create render targets to the FBO
context.defaultColorTarget = gl.createTexture();
context.defaultDepthTarget = gl.createRenderbuffer();
GL.resizeOffscreenFramebuffer(context); // Size them up correctly (use the same mechanism when resizing on demand)
gl.bindTexture(0xDE1 /*GL_TEXTURE_2D*/, context.defaultColorTarget);
gl.texParameteri(0xDE1 /*GL_TEXTURE_2D*/, 0x2801 /*GL_TEXTURE_MIN_FILTER*/, 0x2600 /*GL_NEAREST*/);
gl.texParameteri(0xDE1 /*GL_TEXTURE_2D*/, 0x2800 /*GL_TEXTURE_MAG_FILTER*/, 0x2600 /*GL_NEAREST*/);
gl.texParameteri(0xDE1 /*GL_TEXTURE_2D*/, 0x2802 /*GL_TEXTURE_WRAP_S*/, 0x812F /*GL_CLAMP_TO_EDGE*/);
gl.texParameteri(0xDE1 /*GL_TEXTURE_2D*/, 0x2803 /*GL_TEXTURE_WRAP_T*/, 0x812F /*GL_CLAMP_TO_EDGE*/);
gl.texImage2D(0xDE1 /*GL_TEXTURE_2D*/, 0, 0x1908 /*GL_RGBA*/, gl.canvas.width, gl.canvas.height, 0, 0x1908 /*GL_RGBA*/, 0x1401 /*GL_UNSIGNED_BYTE*/, null);
gl.framebufferTexture2D(0x8D40 /*GL_FRAMEBUFFER*/, 0x8CE0 /*GL_COLOR_ATTACHMENT0*/, 0xDE1 /*GL_TEXTURE_2D*/, context.defaultColorTarget, 0);
gl.bindTexture(0xDE1 /*GL_TEXTURE_2D*/, null);
// Create depth render target to the FBO
var depthTarget = gl.createRenderbuffer();
gl.bindRenderbuffer(0x8D41 /*GL_RENDERBUFFER*/, context.defaultDepthTarget);
gl.renderbufferStorage(0x8D41 /*GL_RENDERBUFFER*/, 0x81A5 /*GL_DEPTH_COMPONENT16*/, gl.canvas.width, gl.canvas.height);
gl.framebufferRenderbuffer(0x8D40 /*GL_FRAMEBUFFER*/, 0x8D00 /*GL_DEPTH_ATTACHMENT*/, 0x8D41 /*GL_RENDERBUFFER*/, context.defaultDepthTarget);
gl.bindRenderbuffer(0x8D41 /*GL_RENDERBUFFER*/, null);
// Create blitter
var vertices = [
-1, -1,
-1, 1,
1, -1,
1, 1
];
var vb = gl.createBuffer();
gl.bindBuffer(0x8892 /*GL_ARRAY_BUFFER*/, vb);
gl.bufferData(0x8892 /*GL_ARRAY_BUFFER*/, new Float32Array(vertices), 0x88E4 /*GL_STATIC_DRAW*/);
gl.bindBuffer(0x8892 /*GL_ARRAY_BUFFER*/, null);
context.blitVB = vb;
var vsCode =
'attribute vec2 pos;' +
'varying lowp vec2 tex;' +
'void main() { tex = pos * 0.5 + vec2(0.5,0.5); gl_Position = vec4(pos, 0.0, 1.0); }';
var vs = gl.createShader(0x8B31 /*GL_VERTEX_SHADER*/);
gl.shaderSource(vs, vsCode);
gl.compileShader(vs);
var fsCode =
'varying lowp vec2 tex;' +
'uniform sampler2D sampler;' +
'void main() { gl_FragColor = texture2D(sampler, tex); }';
var fs = gl.createShader(0x8B30 /*GL_FRAGMENT_SHADER*/);
gl.shaderSource(fs, fsCode);
gl.compileShader(fs);
var blitProgram = gl.createProgram();
gl.attachShader(blitProgram, vs);
gl.attachShader(blitProgram, fs);
gl.linkProgram(blitProgram);
context.blitProgram = blitProgram;
context.blitPosLoc = gl.getAttribLocation(blitProgram, "pos");
gl.useProgram(blitProgram);
gl.uniform1i(gl.getUniformLocation(blitProgram, "sampler"), 0);
gl.useProgram(null);
context.defaultVao = undefined;
if (gl.createVertexArray) {
context.defaultVao = gl.createVertexArray();
gl.bindVertexArray(context.defaultVao);
gl.enableVertexAttribArray(context.blitPosLoc);
gl.bindVertexArray(null);
}
},
resizeOffscreenFramebuffer: function(context) {
var gl = context.GLctx;
// Resize color buffer
if (context.defaultColorTarget) {
var prevTextureBinding = gl.getParameter(0x8069 /*GL_TEXTURE_BINDING_2D*/);
gl.bindTexture(0xDE1 /*GL_TEXTURE_2D*/, context.defaultColorTarget);
gl.texImage2D(0xDE1 /*GL_TEXTURE_2D*/, 0, 0x1908 /*GL_RGBA*/, gl.drawingBufferWidth, gl.drawingBufferHeight, 0, 0x1908 /*GL_RGBA*/, 0x1401 /*GL_UNSIGNED_BYTE*/, null);
gl.bindTexture(0xDE1 /*GL_TEXTURE_2D*/, prevTextureBinding);
}
// Resize depth buffer
if (context.defaultDepthTarget) {
var prevRenderBufferBinding = gl.getParameter(0x8CA7 /*GL_RENDERBUFFER_BINDING*/);
gl.bindRenderbuffer(0x8D41 /*GL_RENDERBUFFER*/, context.defaultDepthTarget);
gl.renderbufferStorage(0x8D41 /*GL_RENDERBUFFER*/, 0x81A5 /*GL_DEPTH_COMPONENT16*/, gl.drawingBufferWidth, gl.drawingBufferHeight); // TODO: Read context creation parameters for what type of depth and stencil to use
gl.bindRenderbuffer(0x8D41 /*GL_RENDERBUFFER*/, prevRenderBufferBinding);
}
},
// Renders the contents of the offscreen render target onto the visible screen.
blitOffscreenFramebuffer: function(context) {
var gl = context.GLctx;
var prevScissorTest = gl.getParameter(0xC11 /*GL_SCISSOR_TEST*/);
if (prevScissorTest) gl.disable(0xC11 /*GL_SCISSOR_TEST*/);
var prevFbo = gl.getParameter(0x8CA6 /*GL_FRAMEBUFFER_BINDING*/);
#if MAX_WEBGL_VERSION >= 2
if (gl.blitFramebuffer && !context.defaultFboForbidBlitFramebuffer) {
gl.bindFramebuffer(0x8CA8 /*GL_READ_FRAMEBUFFER*/, context.defaultFbo);
gl.bindFramebuffer(0x8CA9 /*GL_DRAW_FRAMEBUFFER*/, null);
gl.blitFramebuffer(0, 0, gl.canvas.width, gl.canvas.height,
0, 0, gl.canvas.width, gl.canvas.height,
0x4000 /*GL_COLOR_BUFFER_BIT*/, 0x2600/*GL_NEAREST*/);
}
else
#endif
{
gl.bindFramebuffer(0x8D40 /*GL_FRAMEBUFFER*/, null);
var prevProgram = gl.getParameter(0x8B8D /*GL_CURRENT_PROGRAM*/);
gl.useProgram(context.blitProgram);
var prevVB = gl.getParameter(0x8894 /*GL_ARRAY_BUFFER_BINDING*/);
gl.bindBuffer(0x8892 /*GL_ARRAY_BUFFER*/, context.blitVB);
var prevActiveTexture = gl.getParameter(0x84E0 /*GL_ACTIVE_TEXTURE*/);
gl.activeTexture(0x84C0 /*GL_TEXTURE0*/);
var prevTextureBinding = gl.getParameter(0x8069 /*GL_TEXTURE_BINDING_2D*/);
gl.bindTexture(0xDE1 /*GL_TEXTURE_2D*/, context.defaultColorTarget);
var prevBlend = gl.getParameter(0xBE2 /*GL_BLEND*/);
if (prevBlend) gl.disable(0xBE2 /*GL_BLEND*/);
var prevCullFace = gl.getParameter(0xB44 /*GL_CULL_FACE*/);
if (prevCullFace) gl.disable(0xB44 /*GL_CULL_FACE*/);
var prevDepthTest = gl.getParameter(0xB71 /*GL_DEPTH_TEST*/);
if (prevDepthTest) gl.disable(0xB71 /*GL_DEPTH_TEST*/);
var prevStencilTest = gl.getParameter(0xB90 /*GL_STENCIL_TEST*/);
if (prevStencilTest) gl.disable(0xB90 /*GL_STENCIL_TEST*/);
function draw() {
gl.vertexAttribPointer(context.blitPosLoc, 2, 0x1406 /*GL_FLOAT*/, false, 0, 0);
gl.drawArrays(5/*GL_TRIANGLE_STRIP*/, 0, 4);
}
#if !OFFSCREEN_FRAMEBUFFER_FORBID_VAO_PATH
if (context.defaultVao) {
// WebGL 2 or OES_vertex_array_object
var prevVAO = gl.getParameter(0x85B5 /*GL_VERTEX_ARRAY_BINDING*/);
gl.bindVertexArray(context.defaultVao);
draw();
gl.bindVertexArray(prevVAO);
}
else
#endif
{
var prevVertexAttribPointer = {
buffer: gl.getVertexAttrib(context.blitPosLoc, 0x889F /*GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING*/),
size: gl.getVertexAttrib(context.blitPosLoc, 0x8623 /*GL_VERTEX_ATTRIB_ARRAY_SIZE*/),
stride: gl.getVertexAttrib(context.blitPosLoc, 0x8624 /*GL_VERTEX_ATTRIB_ARRAY_STRIDE*/),
type: gl.getVertexAttrib(context.blitPosLoc, 0x8625 /*GL_VERTEX_ATTRIB_ARRAY_TYPE*/),
normalized: gl.getVertexAttrib(context.blitPosLoc, 0x886A /*GL_VERTEX_ATTRIB_ARRAY_NORMALIZED*/),
pointer: gl.getVertexAttribOffset(context.blitPosLoc, 0x8645 /*GL_VERTEX_ATTRIB_ARRAY_POINTER*/),
};
var maxVertexAttribs = gl.getParameter(0x8869 /*GL_MAX_VERTEX_ATTRIBS*/);
var prevVertexAttribEnables = [];
for (var i = 0; i < maxVertexAttribs; ++i) {
var prevEnabled = gl.getVertexAttrib(i, 0x8622 /*GL_VERTEX_ATTRIB_ARRAY_ENABLED*/);
var wantEnabled = i == context.blitPosLoc;
if (prevEnabled && !wantEnabled) {
gl.disableVertexAttribArray(i);
}
if (!prevEnabled && wantEnabled) {
gl.enableVertexAttribArray(i);
}
prevVertexAttribEnables[i] = prevEnabled;
}
draw();
for (var i = 0; i < maxVertexAttribs; ++i) {
var prevEnabled = prevVertexAttribEnables[i];
var nowEnabled = i == context.blitPosLoc;
if (prevEnabled && !nowEnabled) {
gl.enableVertexAttribArray(i);
}
if (!prevEnabled && nowEnabled) {
gl.disableVertexAttribArray(i);
}
}
gl.bindBuffer(0x8892 /*GL_ARRAY_BUFFER*/, prevVertexAttribPointer.buffer);
gl.vertexAttribPointer(context.blitPosLoc,
prevVertexAttribPointer.size,
prevVertexAttribPointer.type,
prevVertexAttribPointer.normalized,
prevVertexAttribPointer.stride,
prevVertexAttribPointer.offset);
}
if (prevStencilTest) gl.enable(0xB90 /*GL_STENCIL_TEST*/);
if (prevDepthTest) gl.enable(0xB71 /*GL_DEPTH_TEST*/);
if (prevCullFace) gl.enable(0xB44 /*GL_CULL_FACE*/);
if (prevBlend) gl.enable(0xBE2 /*GL_BLEND*/);
gl.bindTexture(0xDE1 /*GL_TEXTURE_2D*/, prevTextureBinding);
gl.activeTexture(prevActiveTexture);
gl.bindBuffer(0x8892 /*GL_ARRAY_BUFFER*/, prevVB);
gl.useProgram(prevProgram);
}
gl.bindFramebuffer(0x8D40 /*GL_FRAMEBUFFER*/, prevFbo);
if (prevScissorTest) gl.enable(0xC11 /*GL_SCISSOR_TEST*/);
},
#endif
registerContext: function(ctx, webGLContextAttributes) {
var handle = _malloc(8); // Make space on the heap to store GL context attributes that need to be accessible as shared between threads.
#if GL_ASSERTIONS
assert(handle, 'malloc() failed in GL.registerContext!');
#endif
#if GL_SUPPORT_EXPLICIT_SWAP_CONTROL
{{{ makeSetValue('handle', 0, 'webGLContextAttributes.explicitSwapControl', 'i32')}}}; // explicitSwapControl
#endif
#if USE_PTHREADS
{{{ makeSetValue('handle', 4, '_pthread_self()', 'i32')}}}; // the thread pointer of the thread that owns the control of the context
#endif
var context = {
handle: handle,
attributes: webGLContextAttributes,
version: webGLContextAttributes.majorVersion,
GLctx: ctx
};
#if WORKAROUND_OLD_WEBGL_UNIFORM_UPLOAD_IGNORED_OFFSET_BUG
context.cannotHandleOffsetsInUniformArrayViews = (function(g) {
function b(c, t) {
var s = g.createShader(t);
g.shaderSource(s, c);
g.compileShader(s);
return s;
}
try {
var p = g.createProgram(); // Note: we do not delete this program so it stays part of the context we created, but that is ok - it does not do anything and we want to keep this detection size minimal.
g.attachShader(p, b("attribute vec4 p;void main(){gl_Position=p;}", 0x8B31 /*GL_VERTEX_SHADER*/));
g.attachShader(p, b("precision lowp float;uniform vec4 u;void main(){gl_FragColor=u;}", 0x8B30 /*GL_FRAGMENT_SHADER*/));
g.linkProgram(p);
var h = new Float32Array(8);
h[4] = 1;
g.useProgram(p);
var l = g.getUniformLocation(p, "u");
g.uniform4fv(l, h.subarray(4, 8)); // Uploading a 4-vector GL uniform from last four elements of array [0,0,0,0,1,0,0,0], i.e. uploading vec4=(1,0,0,0) at offset=4.
return !g.getUniform(p, l)[0]; // in proper WebGL we expect to read back the vector we just uploaded: (1,0,0,0). On buggy browser would instead have uploaded offset=0 of above array, i.e. vec4=(0,0,0,0)
} catch(e) { return false; } // If we get an exception, we assume we got some other error, and do not trigger this workaround.
})();
#endif
// Store the created context object so that we can access the context given a canvas without having to pass the parameters again.
if (ctx.canvas) ctx.canvas.GLctxObject = context;
GL.contexts[handle] = context;
#if GL_SUPPORT_AUTOMATIC_ENABLE_EXTENSIONS
if (typeof webGLContextAttributes.enableExtensionsByDefault === 'undefined' || webGLContextAttributes.enableExtensionsByDefault) {
GL.initExtensions(context);
}
#endif
#if FULL_ES2
context.maxVertexAttribs = context.GLctx.getParameter(0x8869 /*GL_MAX_VERTEX_ATTRIBS*/);
context.clientBuffers = [];
for (var i = 0; i < context.maxVertexAttribs; i++) {
context.clientBuffers[i] = { enabled: false, clientside: false, size: 0, type: 0, normalized: 0, stride: 0, ptr: 0, vertexAttribPointerAdaptor: null };
}
GL.generateTempBuffers(false, context);
#endif
#if OFFSCREEN_FRAMEBUFFER
if (webGLContextAttributes.renderViaOffscreenBackBuffer) GL.createOffscreenFramebuffer(context);
#else
#if GL_DEBUG
if (webGLContextAttributes.renderViaOffscreenBackBuffer) err('renderViaOffscreenBackBuffer=true specified in WebGL context creation attributes, pass linker flag -s OFFSCREEN_FRAMEBUFFER=1 to enable support!');
#endif
#endif
return handle;
},
makeContextCurrent: function(contextHandle) {
#if GL_DEBUG
if (contextHandle && !GL.contexts[contextHandle]) {
#if USE_PTHREADS
console.error('GL.makeContextCurrent() failed! WebGL context ' + contextHandle + ' does not exist, or was created on another thread!');
#else
console.error('GL.makeContextCurrent() failed! WebGL context ' + contextHandle + ' does not exist!');
#endif
}
#endif
GL.currentContext = GL.contexts[contextHandle]; // Active Emscripten GL layer context object.
Module.ctx = GLctx = GL.currentContext && GL.currentContext.GLctx; // Active WebGL context object.
return !(contextHandle && !GLctx);
},
getContext: function(contextHandle) {
return GL.contexts[contextHandle];
},
deleteContext: function(contextHandle) {
if (GL.currentContext === GL.contexts[contextHandle]) GL.currentContext = null;
if (typeof JSEvents === 'object') JSEvents.removeAllHandlersOnTarget(GL.contexts[contextHandle].GLctx.canvas); // Release all JS event handlers on the DOM element that the GL context is associated with since the context is now deleted.
if (GL.contexts[contextHandle] && GL.contexts[contextHandle].GLctx.canvas) GL.contexts[contextHandle].GLctx.canvas.GLctxObject = undefined; // Make sure the canvas object no longer refers to the context object so there are no GC surprises.
_free(GL.contexts[contextHandle].handle);
GL.contexts[contextHandle] = null;
},
#if GL_SUPPORT_AUTOMATIC_ENABLE_EXTENSIONS
// In WebGL, extensions must be explicitly enabled to be active, see http://www.khronos.org/registry/webgl/specs/latest/1.0/#5.14.14
// In GLES2, all extensions are enabled by default without additional operations. Init all extensions we need to give to GLES2 user
// code here, so that GLES2 code can operate without changing behavior.
initExtensions: function(context) {
// If this function is called without a specific context object, init the extensions of the currently active context.
if (!context) context = GL.currentContext;
if (context.initExtensionsDone) return;
context.initExtensionsDone = true;
var GLctx = context.GLctx;
// Detect the presence of a few extensions manually, this GL interop layer itself will need to know if they exist.
#if LEGACY_GL_EMULATION
context.compressionExt = GLctx.getExtension('WEBGL_compressed_texture_s3tc');
context.anisotropicExt = GLctx.getExtension('EXT_texture_filter_anisotropic');
#endif
#if MIN_WEBGL_VERSION == 1
if (context.version < 2) {
__webgl_acquireInstancedArraysExtension(GLctx);
__webgl_acquireVertexArrayObjectExtension(GLctx);
__webgl_acquireDrawBuffersExtension(GLctx);
}
#endif
GLctx.disjointTimerQueryExt = GLctx.getExtension("EXT_disjoint_timer_query");
// These are the 'safe' feature-enabling extensions that don't add any performance impact related to e.g. debugging, and
// should be enabled by default so that client GLES2/GL code will not need to go through extra hoops to get its stuff working.
// As new extensions are ratified at http://www.khronos.org/registry/webgl/extensions/ , feel free to add your new extensions
// here, as long as they don't produce a performance impact for users that might not be using those extensions.
// E.g. debugging-related extensions should probably be off by default.
var automaticallyEnabledExtensions = [ // Khronos ratified WebGL extensions ordered by number (no debug extensions):
"OES_texture_float", "OES_texture_half_float", "OES_standard_derivatives",
"OES_vertex_array_object", "WEBGL_compressed_texture_s3tc", "WEBGL_depth_texture",
"OES_element_index_uint", "EXT_texture_filter_anisotropic", "EXT_frag_depth",
"WEBGL_draw_buffers", "ANGLE_instanced_arrays", "OES_texture_float_linear",
"OES_texture_half_float_linear", "EXT_blend_minmax", "EXT_shader_texture_lod",
"EXT_texture_norm16",
// Community approved WebGL extensions ordered by number:
"WEBGL_compressed_texture_pvrtc", "EXT_color_buffer_half_float", "WEBGL_color_buffer_float",
"EXT_sRGB", "WEBGL_compressed_texture_etc1", "EXT_disjoint_timer_query",
"WEBGL_compressed_texture_etc", "WEBGL_compressed_texture_astc", "EXT_color_buffer_float",
"WEBGL_compressed_texture_s3tc_srgb", "EXT_disjoint_timer_query_webgl2",
// Old style prefixed forms of extensions (but still currently used on e.g. iPhone Xs as
// tested on iOS 12.4.1):
"WEBKIT_WEBGL_compressed_texture_pvrtc"];
function shouldEnableAutomatically(extension) {
var ret = false;
automaticallyEnabledExtensions.forEach(function(include) {
if (extension.indexOf(include) != -1) {
ret = true;
}
});
return ret;
}
var exts = GLctx.getSupportedExtensions() || []; // .getSupportedExtensions() can return null if context is lost, so coerce to empty array.
exts.forEach(function(ext) {
if (automaticallyEnabledExtensions.indexOf(ext) != -1) {
GLctx.getExtension(ext); // Calling .getExtension enables that extension permanently, no need to store the return value to be enabled.
}
});
},
#endif
// In WebGL, uniforms in a shader program are accessed through an opaque object type 'WebGLUniformLocation'.
// In GLES2, uniforms are accessed via indices. Therefore we must generate a mapping of indices -> WebGLUniformLocations
// to provide the client code the API that uses indices.
// This function takes a linked GL program and generates a mapping table for the program.
// NOTE: Populating the uniform table is performed eagerly at glLinkProgram time, so glLinkProgram should be considered
// to be a slow/costly function call. Calling glGetUniformLocation is relatively fast, since it is always a read-only
// lookup to the table populated in this function call.
populateUniformTable: function(program) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.programs, program, 'populateUniformTable', 'program');
#endif
var p = GL.programs[program];
var ptable = GL.programInfos[program] = {
uniforms: {},
maxUniformLength: 0, // This is eagerly computed below, since we already enumerate all uniforms anyway.
maxAttributeLength: -1, // This is lazily computed and cached, computed when/if first asked, "-1" meaning not computed yet.
maxUniformBlockNameLength: -1 // Lazily computed as well
};
var utable = ptable.uniforms;
// A program's uniform table maps the string name of an uniform to an integer location of that uniform.
// The global GL.uniforms map maps integer locations to WebGLUniformLocations.
var numUniforms = GLctx.getProgramParameter(p, 0x8B86/*GL_ACTIVE_UNIFORMS*/);
for (var i = 0; i < numUniforms; ++i) {
var u = GLctx.getActiveUniform(p, i);
var name = u.name;
ptable.maxUniformLength = Math.max(ptable.maxUniformLength, name.length+1);
// If we are dealing with an array, e.g. vec4 foo[3], strip off the array index part to canonicalize that "foo", "foo[]",
// and "foo[0]" will mean the same. Loop below will populate foo[1] and foo[2].
if (name.slice(-1) == ']') {
name = name.slice(0, name.lastIndexOf('['));
}
// Optimize memory usage slightly: If we have an array of uniforms, e.g. 'vec3 colors[3];', then
// only store the string 'colors' in utable, and 'colors[0]', 'colors[1]' and 'colors[2]' will be parsed as 'colors'+i.
// Note that for the GL.uniforms table, we still need to fetch the all WebGLUniformLocations for all the indices.
var loc = GLctx.getUniformLocation(p, name);
if (loc) {
var id = GL.getNewId(GL.uniforms);
utable[name] = [u.size, id];
GL.uniforms[id] = loc;
for (var j = 1; j < u.size; ++j) {
var n = name + '['+j+']';
loc = GLctx.getUniformLocation(p, n);
id = GL.getNewId(GL.uniforms);
GL.uniforms[id] = loc;
}
}
}
}
},
glPixelStorei__sig: 'vii',
glPixelStorei: function(pname, param) {
if (pname == 0xCF5 /* GL_UNPACK_ALIGNMENT */) {
GL.unpackAlignment = param;
}
GLctx.pixelStorei(pname, param);
},
glGetString__sig: 'ii',
glGetString__deps: ['$stringToNewUTF8'],
glGetString: function(name_) {
if (GL.stringCache[name_]) return GL.stringCache[name_];
var ret;
switch(name_) {
case 0x1F03 /* GL_EXTENSIONS */:
var exts = GLctx.getSupportedExtensions() || []; // .getSupportedExtensions() can return null if context is lost, so coerce to empty array.
#if GL_EXTENSIONS_IN_PREFIXED_FORMAT
exts = exts.concat(exts.map(function(e) { return "GL_" + e; }));
#endif
ret = stringToNewUTF8(exts.join(' '));
break;
case 0x1F00 /* GL_VENDOR */:
case 0x1F01 /* GL_RENDERER */:
case 0x9245 /* UNMASKED_VENDOR_WEBGL */:
case 0x9246 /* UNMASKED_RENDERER_WEBGL */:
#if !GL_EMULATE_GLES_VERSION_STRING_FORMAT
case 0x1F02 /* GL_VERSION */:
case 0x8B8C /* GL_SHADING_LANGUAGE_VERSION */:
#endif
var s = GLctx.getParameter(name_);
if (!s) {
GL.recordError(0x500/*GL_INVALID_ENUM*/);
#if GL_ASSERTIONS
err('GL_INVALID_ENUM in glGetString: Received empty parameter for query name ' + name_ + '!'); // This occurs e.g. if one attempts GL_UNMASKED_VENDOR_WEBGL when it is not supported.
#endif
}
ret = stringToNewUTF8(s);
break;
#if GL_EMULATE_GLES_VERSION_STRING_FORMAT
case 0x1F02 /* GL_VERSION */:
var glVersion = GLctx.getParameter(0x1F02 /*GL_VERSION*/);
// return GLES version string corresponding to the version of the WebGL context
#if MAX_WEBGL_VERSION >= 2
if (GL.currentContext.version >= 2) glVersion = 'OpenGL ES 3.0 (' + glVersion + ')';
else
#endif
{
glVersion = 'OpenGL ES 2.0 (' + glVersion + ')';
}
ret = stringToNewUTF8(glVersion);
break;
case 0x8B8C /* GL_SHADING_LANGUAGE_VERSION */:
var glslVersion = GLctx.getParameter(0x8B8C /*GL_SHADING_LANGUAGE_VERSION*/);
// extract the version number 'N.M' from the string 'WebGL GLSL ES N.M ...'
var ver_re = /^WebGL GLSL ES ([0-9]\.[0-9][0-9]?)(?:$| .*)/;
var ver_num = glslVersion.match(ver_re);
if (ver_num !== null) {
if (ver_num[1].length == 3) ver_num[1] = ver_num[1] + '0'; // ensure minor version has 2 digits
glslVersion = 'OpenGL ES GLSL ES ' + ver_num[1] + ' (' + glslVersion + ')';
}
ret = stringToNewUTF8(glslVersion);
break;
#endif
default:
GL.recordError(0x500/*GL_INVALID_ENUM*/);
#if GL_ASSERTIONS
err('GL_INVALID_ENUM in glGetString: Unknown parameter ' + name_ + '!');
#endif
return 0;
}
GL.stringCache[name_] = ret;
return ret;
},
$emscriptenWebGLGet__deps: ['$writeI53ToI64'],
$emscriptenWebGLGet: function(name_, p, type) {
// Guard against user passing a null pointer.
// Note that GLES2 spec does not say anything about how passing a null pointer should be treated.
// Testing on desktop core GL 3, the application crashes on glGetIntegerv to a null pointer, but
// better to report an error instead of doing anything random.
if (!p) {
#if GL_ASSERTIONS
err('GL_INVALID_VALUE in glGet' + type + 'v(name=' + name_ + ': Function called with null out pointer!');
#endif
GL.recordError(0x501 /* GL_INVALID_VALUE */);
return;
}
var ret = undefined;
switch(name_) { // Handle a few trivial GLES values
case 0x8DFA: // GL_SHADER_COMPILER
ret = 1;
break;
case 0x8DF8: // GL_SHADER_BINARY_FORMATS
#if GL_TRACK_ERRORS
if (type != {{{ cDefine('EM_FUNC_SIG_PARAM_I') }}} && type != {{{ cDefine('EM_FUNC_SIG_PARAM_I64') }}}) {
GL.recordError(0x500); // GL_INVALID_ENUM
#if GL_ASSERTIONS
err('GL_INVALID_ENUM in glGet' + type + 'v(GL_SHADER_BINARY_FORMATS): Invalid parameter type!');
#endif
}
#endif
return; // Do not write anything to the out pointer, since no binary formats are supported.
#if MAX_WEBGL_VERSION >= 2
case 0x87FE: // GL_NUM_PROGRAM_BINARY_FORMATS
#endif
case 0x8DF9: // GL_NUM_SHADER_BINARY_FORMATS
ret = 0;
break;
case 0x86A2: // GL_NUM_COMPRESSED_TEXTURE_FORMATS
// WebGL doesn't have GL_NUM_COMPRESSED_TEXTURE_FORMATS (it's obsolete since GL_COMPRESSED_TEXTURE_FORMATS returns a JS array that can be queried for length),
// so implement it ourselves to allow C++ GLES2 code get the length.
var formats = GLctx.getParameter(0x86A3 /*GL_COMPRESSED_TEXTURE_FORMATS*/);
ret = formats ? formats.length : 0;
break;
#if MAX_WEBGL_VERSION >= 2
case 0x821D: // GL_NUM_EXTENSIONS
#if GL_TRACK_ERRORS
if (GL.currentContext.version < 2) {
GL.recordError(0x502 /* GL_INVALID_OPERATION */); // Calling GLES3/WebGL2 function with a GLES2/WebGL1 context
return;
}
#endif
// .getSupportedExtensions() can return null if context is lost, so coerce to empty array.
var exts = GLctx.getSupportedExtensions() || [];
#if GL_EXTENSIONS_IN_PREFIXED_FORMAT
ret = 2 * exts.length; // each extension is duplicated, first in unprefixed WebGL form, and then a second time with "GL_" prefix.
#else
ret = exts.length;
#endif
break;
case 0x821B: // GL_MAJOR_VERSION
case 0x821C: // GL_MINOR_VERSION
#if GL_TRACK_ERRORS
if (GL.currentContext.version < 2) {
GL.recordError(0x500); // GL_INVALID_ENUM
return;
}
#endif
ret = name_ == 0x821B ? 3 : 0; // return version 3.0
break;
#endif
}
if (ret === undefined) {
var result = GLctx.getParameter(name_);
switch (typeof(result)) {
case "number":
ret = result;
break;
case "boolean":
ret = result ? 1 : 0;
break;
case "string":
GL.recordError(0x500); // GL_INVALID_ENUM
#if GL_ASSERTIONS
err('GL_INVALID_ENUM in glGet' + type + 'v(' + name_ + ') on a name which returns a string!');
#endif
return;
case "object":
if (result === null) {
// null is a valid result for some (e.g., which buffer is bound - perhaps nothing is bound), but otherwise
// can mean an invalid name_, which we need to report as an error
switch(name_) {
case 0x8894: // ARRAY_BUFFER_BINDING
case 0x8B8D: // CURRENT_PROGRAM
case 0x8895: // ELEMENT_ARRAY_BUFFER_BINDING
case 0x8CA6: // FRAMEBUFFER_BINDING
case 0x8CA7: // RENDERBUFFER_BINDING
case 0x8069: // TEXTURE_BINDING_2D
case 0x85B5: // WebGL 2 GL_VERTEX_ARRAY_BINDING, or WebGL 1 extension OES_vertex_array_object GL_VERTEX_ARRAY_BINDING_OES
#if MAX_WEBGL_VERSION >= 2
case 0x8919: // GL_SAMPLER_BINDING
case 0x8E25: // GL_TRANSFORM_FEEDBACK_BINDING
#endif
case 0x8514: { // TEXTURE_BINDING_CUBE_MAP
ret = 0;
break;
}
default: {
GL.recordError(0x500); // GL_INVALID_ENUM
#if GL_ASSERTIONS
err('GL_INVALID_ENUM in glGet' + type + 'v(' + name_ + ') and it returns null!');
#endif
return;
}
}
} else if (result instanceof Float32Array ||
result instanceof Uint32Array ||
result instanceof Int32Array ||
result instanceof Array) {
for (var i = 0; i < result.length; ++i) {
switch (type) {
case {{{ cDefine('EM_FUNC_SIG_PARAM_I') }}}: {{{ makeSetValue('p', 'i*4', 'result[i]', 'i32') }}}; break;
case {{{ cDefine('EM_FUNC_SIG_PARAM_F') }}}: {{{ makeSetValue('p', 'i*4', 'result[i]', 'float') }}}; break;
case {{{ cDefine('EM_FUNC_SIG_PARAM_B') }}}: {{{ makeSetValue('p', 'i', 'result[i] ? 1 : 0', 'i8') }}}; break;
#if GL_ASSERTIONS
default: throw 'internal glGet error, bad type: ' + type;
#endif
}
}
return;
} else {
#if GL_TRACK_ERRORS
try {
#endif
ret = result.name | 0;
#if GL_TRACK_ERRORS
} catch(e) {
GL.recordError(0x500); // GL_INVALID_ENUM
err('GL_INVALID_ENUM in glGet' + type + 'v: Unknown object returned from WebGL getParameter(' + name_ + ')! (error: ' + e + ')');
return;
}
#endif
}
break;
#if GL_TRACK_ERRORS
default:
GL.recordError(0x500); // GL_INVALID_ENUM
err('GL_INVALID_ENUM in glGet' + type + 'v: Native code calling glGet' + type + 'v(' + name_ + ') and it returns ' + result + ' of type ' + typeof(result) + '!');
return;
#endif
}
}
switch (type) {
case {{{ cDefine('EM_FUNC_SIG_PARAM_I64') }}}: writeI53ToI64(p, ret); break;
case {{{ cDefine('EM_FUNC_SIG_PARAM_I') }}}: {{{ makeSetValue('p', '0', 'ret', 'i32') }}}; break;
case {{{ cDefine('EM_FUNC_SIG_PARAM_F') }}}: {{{ makeSetValue('p', '0', 'ret', 'float') }}}; break;
case {{{ cDefine('EM_FUNC_SIG_PARAM_B') }}}: {{{ makeSetValue('p', '0', 'ret ? 1 : 0', 'i8') }}}; break;
#if GL_ASSERTIONS
default: throw 'internal glGet error, bad type: ' + type;
#endif
}
},
glGetIntegerv__sig: 'vii',
glGetIntegerv__deps: ['$emscriptenWebGLGet'],
glGetIntegerv: function(name_, p) {
emscriptenWebGLGet(name_, p, {{{ cDefine('EM_FUNC_SIG_PARAM_I') }}});
},
glGetFloatv__sig: 'vii',
glGetFloatv__deps: ['$emscriptenWebGLGet'],
glGetFloatv: function(name_, p) {
emscriptenWebGLGet(name_, p, {{{ cDefine('EM_FUNC_SIG_PARAM_F') }}});
},
glGetBooleanv__sig: 'vii',
glGetBooleanv__deps: ['$emscriptenWebGLGet'],
glGetBooleanv: function(name_, p) {
emscriptenWebGLGet(name_, p, {{{ cDefine('EM_FUNC_SIG_PARAM_B') }}});
},
glDeleteTextures__sig: 'vii',
glDeleteTextures: function(n, textures) {
for (var i = 0; i < n; i++) {
var id = {{{ makeGetValue('textures', 'i*4', 'i32') }}};
var texture = GL.textures[id];
if (!texture) continue; // GL spec: "glDeleteTextures silently ignores 0s and names that do not correspond to existing textures".
GLctx.deleteTexture(texture);
texture.name = 0;
GL.textures[id] = null;
}
},
glCompressedTexImage2D__sig: 'viiiiiiii',
glCompressedTexImage2D: function(target, level, internalFormat, width, height, border, imageSize, data) {
#if MAX_WEBGL_VERSION >= 2
if (GL.currentContext.version >= 2) { // WebGL 2 provides new garbage-free entry points to call to WebGL. Use those always when possible.
if (GLctx.currentPixelUnpackBufferBinding) {
GLctx['compressedTexImage2D'](target, level, internalFormat, width, height, border, imageSize, data);
} else {
GLctx['compressedTexImage2D'](target, level, internalFormat, width, height, border, HEAPU8, data, imageSize);
}
return;
}
#endif
GLctx['compressedTexImage2D'](target, level, internalFormat, width, height, border, data ? {{{ makeHEAPView('U8', 'data', 'data+imageSize') }}} : null);
},
glCompressedTexSubImage2D__sig: 'viiiiiiiii',
glCompressedTexSubImage2D: function(target, level, xoffset, yoffset, width, height, format, imageSize, data) {
#if MAX_WEBGL_VERSION >= 2
if (GL.currentContext.version >= 2) { // WebGL 2 provides new garbage-free entry points to call to WebGL. Use those always when possible.
if (GLctx.currentPixelUnpackBufferBinding) {
GLctx['compressedTexSubImage2D'](target, level, xoffset, yoffset, width, height, format, imageSize, data);
} else {
GLctx['compressedTexSubImage2D'](target, level, xoffset, yoffset, width, height, format, HEAPU8, data, imageSize);
}
return;
}
#endif
GLctx['compressedTexSubImage2D'](target, level, xoffset, yoffset, width, height, format, data ? {{{ makeHEAPView('U8', 'data', 'data+imageSize') }}} : null);
},
_computeUnpackAlignedImageSize: function(width, height, sizePerPixel, alignment) {
function roundedToNextMultipleOf(x, y) {
#if GL_ASSERTIONS
assert((y & (y-1)) === 0, 'Unpack alignment must be a power of 2! (Allowed values per WebGL spec are 1, 2, 4 or 8)');
#endif
return (x + y - 1) & -y;
}
var plainRowSize = width * sizePerPixel;
var alignedRowSize = roundedToNextMultipleOf(plainRowSize, alignment);
return height * alignedRowSize;
},
_colorChannelsInGlTextureFormat: function(format) {
// Micro-optimizations for size: map format to size by subtracting smallest enum value (0x1902) from all values first.
// Also omit the most common size value (1) from the list, which is assumed by formats not on the list.
var colorChannels = {
// 0x1902 /* GL_DEPTH_COMPONENT */ - 0x1902: 1,
// 0x1906 /* GL_ALPHA */ - 0x1902: 1,
{{{ 0x1907 /* GL_RGB */ - 0x1902 }}}: 3,
{{{ 0x1908 /* GL_RGBA */ - 0x1902 }}}: 4,
// 0x1909 /* GL_LUMINANCE */ - 0x1902: 1,
{{{ 0x190A /*GL_LUMINANCE_ALPHA*/ - 0x1902 }}}: 2,
{{{ 0x8C40 /*(GL_SRGB_EXT)*/ - 0x1902 }}}: 3,
{{{ 0x8C42 /*(GL_SRGB_ALPHA_EXT*/ - 0x1902 }}}: 4,
#if MAX_WEBGL_VERSION >= 2
// 0x1903 /* GL_RED */ - 0x1902: 1,
{{{ 0x8227 /*GL_RG*/ - 0x1902 }}}: 2,
{{{ 0x8228 /*GL_RG_INTEGER*/ - 0x1902 }}}: 2,
// 0x8D94 /* GL_RED_INTEGER */ - 0x1902: 1,
{{{ 0x8D98 /*GL_RGB_INTEGER*/ - 0x1902 }}}: 3,
{{{ 0x8D99 /*GL_RGBA_INTEGER*/ - 0x1902 }}}: 4
#endif
};
#if GL_ASSERTIONS
if (!colorChannels[format - 0x1902]
&& format != 0x1902 /* GL_DEPTH_COMPONENT */
&& format != 0x1906 /* GL_ALPHA */
&& format != 0x1909 /* GL_LUMINANCE */
&& format != 0x1903 /* GL_RED */
&& format != 0x8D94 /* GL_RED_INTEGER */) {
err('Invalid format=0x' + format.toString(16) + ' passed to function _colorChannelsInGlTextureFormat()!');
}
#endif
return colorChannels[format - 0x1902]||1;
},
$emscriptenWebGLGetTexPixelData__deps: ['_computeUnpackAlignedImageSize', '_colorChannelsInGlTextureFormat', '_heapObjectForWebGLType', '_heapAccessShiftForWebGLHeap'],
$emscriptenWebGLGetTexPixelData: function(type, format, width, height, pixels, internalFormat) {
var heap = __heapObjectForWebGLType(type);
var shift = __heapAccessShiftForWebGLHeap(heap);
var byteSize = 1<<shift;
var sizePerPixel = __colorChannelsInGlTextureFormat(format) * byteSize;
var bytes = __computeUnpackAlignedImageSize(width, height, sizePerPixel, GL.unpackAlignment);
#if GL_ASSERTIONS
assert((pixels >> shift) << shift == pixels, 'Pointer to texture data passed to texture get function must be aligned to the byte size of the pixel type!');
#endif
return heap.subarray(pixels >> shift, pixels + bytes >> shift);
},
glTexImage2D__sig: 'viiiiiiiii',
glTexImage2D__deps: ['$emscriptenWebGLGetTexPixelData'
#if MAX_WEBGL_VERSION >= 2
, '_heapObjectForWebGLType', '_heapAccessShiftForWebGLHeap'
#endif
],
glTexImage2D: function(target, level, internalFormat, width, height, border, format, type, pixels) {
#if MAX_WEBGL_VERSION >= 2
#if WEBGL2_BACKWARDS_COMPATIBILITY_EMULATION
if (GL.currentContext.version >= 2) {
// WebGL 1 unsized texture internalFormats are no longer supported in WebGL 2, so patch those format
// enums to the ones that are present in WebGL 2.
if (format == 0x1902/*GL_DEPTH_COMPONENT*/ && internalFormat == 0x1902/*GL_DEPTH_COMPONENT*/ && type == 0x1405/*GL_UNSIGNED_INT*/) {
internalFormat = 0x81A6 /*GL_DEPTH_COMPONENT24*/;
}
if (type == 0x8d61/*GL_HALF_FLOAT_OES*/) {
type = 0x140B /*GL_HALF_FLOAT*/;
if (format == 0x1908/*GL_RGBA*/ && internalFormat == 0x1908/*GL_RGBA*/) {
internalFormat = 0x881A/*GL_RGBA16F*/;
}
}
if (internalFormat == 0x84f9 /*GL_DEPTH_STENCIL*/) {
internalFormat = 0x88F0 /*GL_DEPTH24_STENCIL8*/;
}
}
#endif
if (GL.currentContext.version >= 2) {
// WebGL 2 provides new garbage-free entry points to call to WebGL. Use those always when possible.
if (GLctx.currentPixelUnpackBufferBinding) {
GLctx.texImage2D(target, level, internalFormat, width, height, border, format, type, pixels);
} else if (pixels) {
var heap = __heapObjectForWebGLType(type);
GLctx.texImage2D(target, level, internalFormat, width, height, border, format, type, heap, pixels >> __heapAccessShiftForWebGLHeap(heap));
} else {
GLctx.texImage2D(target, level, internalFormat, width, height, border, format, type, null);
}
return;
}
#endif
GLctx.texImage2D(target, level, internalFormat, width, height, border, format, type, pixels ? emscriptenWebGLGetTexPixelData(type, format, width, height, pixels, internalFormat) : null);
},
glTexSubImage2D__sig: 'viiiiiiiii',
glTexSubImage2D__deps: ['$emscriptenWebGLGetTexPixelData'
#if MAX_WEBGL_VERSION >= 2
, '_heapObjectForWebGLType', '_heapAccessShiftForWebGLHeap'
#endif
],
glTexSubImage2D: function(target, level, xoffset, yoffset, width, height, format, type, pixels) {
#if MAX_WEBGL_VERSION >= 2
#if WEBGL2_BACKWARDS_COMPATIBILITY_EMULATION
if (GL.currentContext.version >= 2) {
// In WebGL 1 to do half float textures, one uses the type enum GL_HALF_FLOAT_OES, but in
// WebGL 2 when half float textures were adopted to the core spec, the enum changed value
// which breaks backwards compatibility. Route old enum number to the new one.
if (type == 0x8d61/*GL_HALF_FLOAT_OES*/) type = 0x140B /*GL_HALF_FLOAT*/;
}
#endif
if (GL.currentContext.version >= 2) {
// WebGL 2 provides new garbage-free entry points to call to WebGL. Use those always when possible.
if (GLctx.currentPixelUnpackBufferBinding) {
GLctx.texSubImage2D(target, level, xoffset, yoffset, width, height, format, type, pixels);
} else if (pixels) {
var heap = __heapObjectForWebGLType(type);
GLctx.texSubImage2D(target, level, xoffset, yoffset, width, height, format, type, heap, pixels >> __heapAccessShiftForWebGLHeap(heap));
} else {
GLctx.texSubImage2D(target, level, xoffset, yoffset, width, height, format, type, null);
}
return;
}
#endif
var pixelData = null;
if (pixels) pixelData = emscriptenWebGLGetTexPixelData(type, format, width, height, pixels, 0);
GLctx.texSubImage2D(target, level, xoffset, yoffset, width, height, format, type, pixelData);
},
glReadPixels__sig: 'viiiiiii',
glReadPixels__deps: ['$emscriptenWebGLGetTexPixelData'
#if MAX_WEBGL_VERSION >= 2
, '_heapObjectForWebGLType', '_heapAccessShiftForWebGLHeap'
#endif
],
glReadPixels: function(x, y, width, height, format, type, pixels) {
#if MAX_WEBGL_VERSION >= 2
if (GL.currentContext.version >= 2) { // WebGL 2 provides new garbage-free entry points to call to WebGL. Use those always when possible.
if (GLctx.currentPixelPackBufferBinding) {
GLctx.readPixels(x, y, width, height, format, type, pixels);
} else {
var heap = __heapObjectForWebGLType(type);
GLctx.readPixels(x, y, width, height, format, type, heap, pixels >> __heapAccessShiftForWebGLHeap(heap));
}
return;
}
#endif
var pixelData = emscriptenWebGLGetTexPixelData(type, format, width, height, pixels, format);
if (!pixelData) {
GL.recordError(0x500/*GL_INVALID_ENUM*/);
#if GL_ASSERTIONS
err('GL_INVALID_ENUM in glReadPixels: Unrecognized combination of type=' + type + ' and format=' + format + '!');
#endif
return;
}
GLctx.readPixels(x, y, width, height, format, type, pixelData);
},
glBindTexture__sig: 'vii',
glBindTexture: function(target, texture) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.textures, texture, 'glBindTexture', 'texture');
#endif
GLctx.bindTexture(target, GL.textures[texture]);
},
glGetTexParameterfv__sig: 'viii',
glGetTexParameterfv: function(target, pname, params) {
if (!params) {
// GLES2 specification does not specify how to behave if params is a null pointer. Since calling this function does not make sense
// if p == null, issue a GL error to notify user about it.
#if GL_ASSERTIONS
err('GL_INVALID_VALUE in glGetTexParameterfv(target=' + target +', pname=' + pname + ', params=0): Function called with null out pointer!');
#endif
GL.recordError(0x501 /* GL_INVALID_VALUE */);
return;
}
{{{ makeSetValue('params', '0', 'GLctx.getTexParameter(target, pname)', 'float') }}};
},
glGetTexParameteriv__sig: 'viii',
glGetTexParameteriv: function(target, pname, params) {
if (!params) {
// GLES2 specification does not specify how to behave if params is a null pointer. Since calling this function does not make sense
// if p == null, issue a GL error to notify user about it.
#if GL_ASSERTIONS
err('GL_INVALID_VALUE in glGetTexParameteriv(target=' + target +', pname=' + pname + ', params=0): Function called with null out pointer!');
#endif
GL.recordError(0x501 /* GL_INVALID_VALUE */);
return;
}
{{{ makeSetValue('params', '0', 'GLctx.getTexParameter(target, pname)', 'i32') }}};
},
glTexParameterfv__sig: 'viii',
glTexParameterfv: function(target, pname, params) {
var param = {{{ makeGetValue('params', '0', 'float') }}};
GLctx.texParameterf(target, pname, param);
},
glTexParameteriv__sig: 'viii',
glTexParameteriv: function(target, pname, params) {
var param = {{{ makeGetValue('params', '0', 'i32') }}};
GLctx.texParameteri(target, pname, param);
},
glIsTexture__sig: 'ii',
glIsTexture: function(id) {
var texture = GL.textures[id];
if (!texture) return 0;
return GLctx.isTexture(texture);
},
// The code path for creating textures, buffers, framebuffers and other objects is so identical to each other (and not in fast path), that
// merge the functions together to only have one generated copy of this. 'createFunction' refers to the WebGL context function name to do
// the actual creation, 'objectTable' points to the GL object table where to populate the created objects, and 'functionName' carries
// the name of the caller for debug information.
_glGenObject__sig: 'vii',
_glGenObject: function(n, buffers, createFunction, objectTable
#if GL_ASSERTIONS
, functionName
#endif
) {
for (var i = 0; i < n; i++) {
var buffer = GLctx[createFunction]();
var id = buffer && GL.getNewId(objectTable);
if (buffer) {
buffer.name = id;
objectTable[id] = buffer;
} else {
GL.recordError(0x502 /* GL_INVALID_OPERATION */);
#if GL_ASSERTIONS
err('GL_INVALID_OPERATION in ' + functionName + ': GLctx.' + createFunction + ' returned null - most likely GL context is lost!');
#endif
}
{{{ makeSetValue('buffers', 'i*4', 'id', 'i32') }}};
}
},
glGenBuffers__deps: ['_glGenObject'],
glGenBuffers__sig: 'vii',
glGenBuffers: function(n, buffers) {
__glGenObject(n, buffers, 'createBuffer', GL.buffers
#if GL_ASSERTIONS
, 'glGenBuffers'
#endif
);
},
glGenTextures__deps: ['_glGenObject'],
glGenTextures__sig: 'vii',
glGenTextures: function(n, textures) {
__glGenObject(n, textures, 'createTexture', GL.textures
#if GL_ASSERTIONS
, 'glGenTextures'
#endif
);
},
glDeleteBuffers__sig: 'vii',
glDeleteBuffers: function(n, buffers) {
for (var i = 0; i < n; i++) {
var id = {{{ makeGetValue('buffers', 'i*4', 'i32') }}};
var buffer = GL.buffers[id];
// From spec: "glDeleteBuffers silently ignores 0's and names that do not
// correspond to existing buffer objects."
if (!buffer) continue;
GLctx.deleteBuffer(buffer);
buffer.name = 0;
GL.buffers[id] = null;
if (id == GL.currArrayBuffer) GL.currArrayBuffer = 0;
if (id == GL.currElementArrayBuffer) GL.currElementArrayBuffer = 0;
#if MAX_WEBGL_VERSION >= 2
if (id == GLctx.currentPixelPackBufferBinding) GLctx.currentPixelPackBufferBinding = 0;
if (id == GLctx.currentPixelUnpackBufferBinding) GLctx.currentPixelUnpackBufferBinding = 0;
#endif
}
},
glGetBufferParameteriv__sig: 'viii',
glGetBufferParameteriv: function(target, value, data) {
if (!data) {
// GLES2 specification does not specify how to behave if data is a null pointer. Since calling this function does not make sense
// if data == null, issue a GL error to notify user about it.
#if GL_ASSERTIONS
err('GL_INVALID_VALUE in glGetBufferParameteriv(target=' + target + ', value=' + value + ', data=0): Function called with null out pointer!');
#endif
GL.recordError(0x501 /* GL_INVALID_VALUE */);
return;
}
{{{ makeSetValue('data', '0', 'GLctx.getBufferParameter(target, value)', 'i32') }}};
},
glBufferData__sig: 'viiii',
glBufferData: function(target, size, data, usage) {
#if LEGACY_GL_EMULATION
switch (usage) { // fix usages, WebGL 1 only has *_DRAW
case 0x88E1: // GL_STREAM_READ
case 0x88E2: // GL_STREAM_COPY
usage = 0x88E0; // GL_STREAM_DRAW
break;
case 0x88E5: // GL_STATIC_READ
case 0x88E6: // GL_STATIC_COPY
usage = 0x88E4; // GL_STATIC_DRAW
break;
case 0x88E9: // GL_DYNAMIC_READ
case 0x88EA: // GL_DYNAMIC_COPY
usage = 0x88E8; // GL_DYNAMIC_DRAW
break;
}
#endif
#if MAX_WEBGL_VERSION >= 2
if (GL.currentContext.version >= 2) { // WebGL 2 provides new garbage-free entry points to call to WebGL. Use those always when possible.
if (data) {
GLctx.bufferData(target, HEAPU8, usage, data, size);
} else {
GLctx.bufferData(target, size, usage);
}
} else {
#endif
// N.b. here first form specifies a heap subarray, second form an integer size, so the ?: code here is polymorphic. It is advised to avoid
// randomly mixing both uses in calling code, to avoid any potential JS engine JIT issues.
GLctx.bufferData(target, data ? HEAPU8.subarray(data, data+size) : size, usage);
#if MAX_WEBGL_VERSION >= 2
}
#endif
},
glBufferSubData__sig: 'viiii',
glBufferSubData: function(target, offset, size, data) {
#if MAX_WEBGL_VERSION >= 2
if (GL.currentContext.version >= 2) { // WebGL 2 provides new garbage-free entry points to call to WebGL. Use those always when possible.
GLctx.bufferSubData(target, offset, HEAPU8, data, size);
return;
}
#endif
GLctx.bufferSubData(target, offset, HEAPU8.subarray(data, data+size));
},
// Queries EXT
glGenQueriesEXT__sig: 'vii',
glGenQueriesEXT: function(n, ids) {
for (var i = 0; i < n; i++) {
var query = GLctx.disjointTimerQueryExt['createQueryEXT']();
if (!query) {
GL.recordError(0x502 /* GL_INVALID_OPERATION */);
#if GL_ASSERTIONS
err('GL_INVALID_OPERATION in glGenQueriesEXT: GLctx.disjointTimerQueryExt.createQueryEXT returned null - most likely GL context is lost!');
#endif
while(i < n) {{{ makeSetValue('ids', 'i++*4', 0, 'i32') }}};
return;
}
var id = GL.getNewId(GL.timerQueriesEXT);
query.name = id;
GL.timerQueriesEXT[id] = query;
{{{ makeSetValue('ids', 'i*4', 'id', 'i32') }}};
}
},
glDeleteQueriesEXT__sig: 'vii',
glDeleteQueriesEXT: function(n, ids) {
for (var i = 0; i < n; i++) {
var id = {{{ makeGetValue('ids', 'i*4', 'i32') }}};
var query = GL.timerQueriesEXT[id];
if (!query) continue; // GL spec: "unused names in ids are ignored, as is the name zero."
GLctx.disjointTimerQueryExt['deleteQueryEXT'](query);
GL.timerQueriesEXT[id] = null;
}
},
glIsQueryEXT__sig: 'ii',
glIsQueryEXT: function(id) {
var query = GL.timerQueriesEXT[id];
if (!query) return 0;
return GLctx.disjointTimerQueryExt['isQueryEXT'](query);
},
glBeginQueryEXT__sig: 'vii',
glBeginQueryEXT: function(target, id) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.timerQueriesEXT, id, 'glBeginQueryEXT', 'id');
#endif
GLctx.disjointTimerQueryExt['beginQueryEXT'](target, GL.timerQueriesEXT[id]);
},
glEndQueryEXT__sig: 'vi',
glEndQueryEXT: function(target) {
GLctx.disjointTimerQueryExt['endQueryEXT'](target);
},
glQueryCounterEXT__sig: 'vii',
glQueryCounterEXT: function(id, target) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.timerQueriesEXT, id, 'glQueryCounterEXT', 'id');
#endif
GLctx.disjointTimerQueryExt['queryCounterEXT'](GL.timerQueriesEXT[id], target);
},
glGetQueryivEXT__sig: 'viii',
glGetQueryivEXT: function(target, pname, params) {
if (!params) {
// GLES2 specification does not specify how to behave if params is a null pointer. Since calling this function does not make sense
// if p == null, issue a GL error to notify user about it.
#if GL_ASSERTIONS
err('GL_INVALID_VALUE in glGetQueryivEXT(target=' + target +', pname=' + pname + ', params=0): Function called with null out pointer!');
#endif
GL.recordError(0x501 /* GL_INVALID_VALUE */);
return;
}
{{{ makeSetValue('params', '0', 'GLctx.disjointTimerQueryExt[\'getQueryEXT\'](target, pname)', 'i32') }}};
},
glGetQueryObjectivEXT__sig: 'viii',
glGetQueryObjectivEXT: function(id, pname, params) {
if (!params) {
// GLES2 specification does not specify how to behave if params is a null pointer. Since calling this function does not make sense
// if p == null, issue a GL error to notify user about it.
#if GL_ASSERTIONS
err('GL_INVALID_VALUE in glGetQueryObject(u)ivEXT(id=' + id +', pname=' + pname + ', params=0): Function called with null out pointer!');
#endif
GL.recordError(0x501 /* GL_INVALID_VALUE */);
return;
}
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.timerQueriesEXT, id, 'glGetQueryObjectivEXT', 'id');
#endif
var query = GL.timerQueriesEXT[id];
var param = GLctx.disjointTimerQueryExt['getQueryObjectEXT'](query, pname);
var ret;
if (typeof param == 'boolean') {
ret = param ? 1 : 0;
} else {
ret = param;
}
{{{ makeSetValue('params', '0', 'ret', 'i32') }}};
},
glGetQueryObjectuivEXT: 'glGetQueryObjectivEXT',
glGetQueryObjecti64vEXT__sig: 'viii',
glGetQueryObjecti64vEXT__deps: ['$writeI53ToI64'],
glGetQueryObjecti64vEXT: function(id, pname, params) {
if (!params) {
// GLES2 specification does not specify how to behave if params is a null pointer. Since calling this function does not make sense
// if p == null, issue a GL error to notify user about it.
#if GL_ASSERTIONS
err('GL_INVALID_VALUE in glGetQueryObject(u)i64vEXT(id=' + id +', pname=' + pname + ', params=0): Function called with null out pointer!');
#endif
GL.recordError(0x501 /* GL_INVALID_VALUE */);
return;
}
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.timerQueriesEXT, id, 'glGetQueryObjecti64vEXT', 'id');
#endif
var query = GL.timerQueriesEXT[id];
var param = GLctx.disjointTimerQueryExt['getQueryObjectEXT'](query, pname);
var ret;
if (typeof param == 'boolean') {
ret = param ? 1 : 0;
} else {
ret = param;
}
writeI53ToI64(params, ret);
},
glGetQueryObjectui64vEXT: 'glGetQueryObjecti64vEXT',
glIsBuffer__sig: 'ii',
glIsBuffer: function(buffer) {
var b = GL.buffers[buffer];
if (!b) return 0;
return GLctx.isBuffer(b);
},
glGenRenderbuffers__sig: 'vii',
glGenRenderbuffers__deps: ['_glGenObject'],
glGenRenderbuffers: function(n, renderbuffers) {
__glGenObject(n, renderbuffers, 'createRenderbuffer', GL.renderbuffers
#if GL_ASSERTIONS
, 'glGenRenderbuffers'
#endif
);
},
glDeleteRenderbuffers__sig: 'vii',
glDeleteRenderbuffers: function(n, renderbuffers) {
for (var i = 0; i < n; i++) {
var id = {{{ makeGetValue('renderbuffers', 'i*4', 'i32') }}};
var renderbuffer = GL.renderbuffers[id];
if (!renderbuffer) continue; // GL spec: "glDeleteRenderbuffers silently ignores 0s and names that do not correspond to existing renderbuffer objects".
GLctx.deleteRenderbuffer(renderbuffer);
renderbuffer.name = 0;
GL.renderbuffers[id] = null;
}
},
glBindRenderbuffer__sig: 'vii',
glBindRenderbuffer: function(target, renderbuffer) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.renderbuffers, renderbuffer, 'glBindRenderbuffer', 'renderbuffer');
#endif
GLctx.bindRenderbuffer(target, GL.renderbuffers[renderbuffer]);
},
glGetRenderbufferParameteriv__sig: 'viii',
glGetRenderbufferParameteriv: function(target, pname, params) {
if (!params) {
// GLES2 specification does not specify how to behave if params is a null pointer. Since calling this function does not make sense
// if params == null, issue a GL error to notify user about it.
#if GL_ASSERTIONS
err('GL_INVALID_VALUE in glGetRenderbufferParameteriv(target=' + target + ', pname=' + pname + ', params=0): Function called with null out pointer!');
#endif
GL.recordError(0x501 /* GL_INVALID_VALUE */);
return;
}
{{{ makeSetValue('params', '0', 'GLctx.getRenderbufferParameter(target, pname)', 'i32') }}};
},
glIsRenderbuffer__sig: 'ii',
glIsRenderbuffer: function(renderbuffer) {
var rb = GL.renderbuffers[renderbuffer];
if (!rb) return 0;
return GLctx.isRenderbuffer(rb);
},
$emscriptenWebGLGetUniform__docs: '/** @suppress{checkTypes} */', // This function intentionally assigns `HEAP32[x] = someBoolean;` Don't let Closure mind about that.
$emscriptenWebGLGetUniform: function(program, location, params, type) {
if (!params) {
// GLES2 specification does not specify how to behave if params is a null pointer. Since calling this function does not make sense
// if params == null, issue a GL error to notify user about it.
#if GL_ASSERTIONS
err('GL_INVALID_VALUE in glGetUniform*v(program=' + program + ', location=' + location + ', params=0): Function called with null out pointer!');
#endif
GL.recordError(0x501 /* GL_INVALID_VALUE */);
return;
}
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.programs, program, 'glGetUniform*v', 'program');
GL.validateGLObjectID(GL.uniforms, location, 'glGetUniform*v', 'location');
#endif
var data = GLctx.getUniform(GL.programs[program], GL.uniforms[location]);
if (typeof data == 'number' || typeof data == 'boolean') {
switch (type) {
case {{{ cDefine('EM_FUNC_SIG_PARAM_I') }}}: {{{ makeSetValue('params', '0', 'data', 'i32') }}}; break;
case {{{ cDefine('EM_FUNC_SIG_PARAM_F') }}}: {{{ makeSetValue('params', '0', 'data', 'float') }}}; break;
default: throw 'internal emscriptenWebGLGetUniform() error, bad type: ' + type;
}
} else {
for (var i = 0; i < data.length; i++) {
switch (type) {
case {{{ cDefine('EM_FUNC_SIG_PARAM_I') }}}: {{{ makeSetValue('params', 'i*4', 'data[i]', 'i32') }}}; break;
case {{{ cDefine('EM_FUNC_SIG_PARAM_F') }}}: {{{ makeSetValue('params', 'i*4', 'data[i]', 'float') }}}; break;
default: throw 'internal emscriptenWebGLGetUniform() error, bad type: ' + type;
}
}
}
},
glGetUniformfv__sig: 'viii',
glGetUniformfv__deps: ['$emscriptenWebGLGetUniform'],
glGetUniformfv: function(program, location, params) {
emscriptenWebGLGetUniform(program, location, params, {{{ cDefine('EM_FUNC_SIG_PARAM_F') }}});
},
glGetUniformiv__sig: 'viii',
glGetUniformiv__deps: ['$emscriptenWebGLGetUniform'],
glGetUniformiv: function(program, location, params) {
emscriptenWebGLGetUniform(program, location, params, {{{ cDefine('EM_FUNC_SIG_PARAM_I') }}});
},
glGetUniformLocation__sig: 'iii',
glGetUniformLocation__deps: ['$jstoi_q'],
glGetUniformLocation: function(program, name) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.programs, program, 'glGetUniformLocation', 'program');
#endif
name = UTF8ToString(name);
var arrayIndex = 0;
// If user passed an array accessor "[index]", parse the array index off the accessor.
if (name[name.length - 1] == ']') {
var leftBrace = name.lastIndexOf('[');
arrayIndex = name[leftBrace+1] != ']' ? jstoi_q(name.slice(leftBrace + 1)) : 0; // "index]", parseInt will ignore the ']' at the end; but treat "foo[]" as "foo[0]"
name = name.slice(0, leftBrace);
}
var uniformInfo = GL.programInfos[program] && GL.programInfos[program].uniforms[name]; // returns pair [ dimension_of_uniform_array, uniform_location ]
if (uniformInfo && arrayIndex >= 0 && arrayIndex < uniformInfo[0]) { // Check if user asked for an out-of-bounds element, i.e. for 'vec4 colors[3];' user could ask for 'colors[10]' which should return -1.
return uniformInfo[1] + arrayIndex;
} else {
return -1;
}
},
$emscriptenWebGLGetVertexAttrib__docs: '/** @suppress{checkTypes} */', // This function intentionally assigns `HEAP32[x] = someBoolean;` Don't let Closure mind about that.
$emscriptenWebGLGetVertexAttrib: function(index, pname, params, type) {
if (!params) {
// GLES2 specification does not specify how to behave if params is a null pointer. Since calling this function does not make sense
// if params == null, issue a GL error to notify user about it.
#if GL_ASSERTIONS
err('GL_INVALID_VALUE in glGetVertexAttrib*v(index=' + index + ', pname=' + pname + ', params=0): Function called with null out pointer!');
#endif
GL.recordError(0x501 /* GL_INVALID_VALUE */);
return;
}
#if FULL_ES2
if (GL.currentContext.clientBuffers[index].enabled) {
err("glGetVertexAttrib*v on client-side array: not supported, bad data returned");
}
#endif
var data = GLctx.getVertexAttrib(index, pname);
if (pname == 0x889F/*VERTEX_ATTRIB_ARRAY_BUFFER_BINDING*/) {
{{{ makeSetValue('params', '0', 'data["name"]', 'i32') }}};
} else if (typeof data == 'number' || typeof data == 'boolean') {
switch (type) {
case {{{ cDefine('EM_FUNC_SIG_PARAM_I') }}}: {{{ makeSetValue('params', '0', 'data', 'i32') }}}; break;
case {{{ cDefine('EM_FUNC_SIG_PARAM_F') }}}: {{{ makeSetValue('params', '0', 'data', 'float') }}}; break;
case {{{ cDefine('EM_FUNC_SIG_PARAM_F2I') }}}: {{{ makeSetValue('params', '0', 'Math.fround(data)', 'i32') }}}; break;
default: throw 'internal emscriptenWebGLGetVertexAttrib() error, bad type: ' + type;
}
} else {
for (var i = 0; i < data.length; i++) {
switch (type) {
case {{{ cDefine('EM_FUNC_SIG_PARAM_I') }}}: {{{ makeSetValue('params', 'i*4', 'data[i]', 'i32') }}}; break;
case {{{ cDefine('EM_FUNC_SIG_PARAM_F') }}}: {{{ makeSetValue('params', 'i*4', 'data[i]', 'float') }}}; break;
case {{{ cDefine('EM_FUNC_SIG_PARAM_F2I') }}}: {{{ makeSetValue('params', 'i*4', 'Math.fround(data[i])', 'i32') }}}; break;
default: throw 'internal emscriptenWebGLGetVertexAttrib() error, bad type: ' + type;
}
}
}
},
glGetVertexAttribfv__sig: 'viii',
glGetVertexAttribfv__deps: ['$emscriptenWebGLGetVertexAttrib'],
glGetVertexAttribfv: function(index, pname, params) {
// N.B. This function may only be called if the vertex attribute was specified using the function glVertexAttrib*f(),
// otherwise the results are undefined. (GLES3 spec 6.1.12)
emscriptenWebGLGetVertexAttrib(index, pname, params, {{{ cDefine('EM_FUNC_SIG_PARAM_F') }}});
},
glGetVertexAttribiv__sig: 'viii',
glGetVertexAttribiv__deps: ['$emscriptenWebGLGetVertexAttrib'],
glGetVertexAttribiv: function(index, pname, params) {
// N.B. This function may only be called if the vertex attribute was specified using the function glVertexAttrib*f(),
// otherwise the results are undefined. (GLES3 spec 6.1.12)
emscriptenWebGLGetVertexAttrib(index, pname, params, {{{ cDefine('EM_FUNC_SIG_PARAM_F2I') }}});
},
glGetVertexAttribPointerv__sig: 'viii',
glGetVertexAttribPointerv: function(index, pname, pointer) {
if (!pointer) {
// GLES2 specification does not specify how to behave if pointer is a null pointer. Since calling this function does not make sense
// if pointer == null, issue a GL error to notify user about it.
#if GL_ASSERTIONS
err('GL_INVALID_VALUE in glGetVertexAttribPointerv(index=' + index + ', pname=' + pname + ', pointer=0): Function called with null out pointer!');
#endif
GL.recordError(0x501 /* GL_INVALID_VALUE */);
return;
}
#if FULL_ES2
if (GL.currentContext.clientBuffers[index].enabled) {
err("glGetVertexAttribPointer on client-side array: not supported, bad data returned");
}
#endif
{{{ makeSetValue('pointer', '0', 'GLctx.getVertexAttribOffset(index, pname)', 'i32') }}};
},
glGetActiveUniform__sig: 'viiiiiii',
glGetActiveUniform: function(program, index, bufSize, length, size, type, name) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.programs, program, 'glGetActiveUniform', 'program');
#endif
program = GL.programs[program];
var info = GLctx.getActiveUniform(program, index);
if (!info) return; // If an error occurs, nothing will be written to length, size, type and name.
var numBytesWrittenExclNull = (bufSize > 0 && name) ? stringToUTF8(info.name, name, bufSize) : 0;
if (length) {{{ makeSetValue('length', '0', 'numBytesWrittenExclNull', 'i32') }}};
if (size) {{{ makeSetValue('size', '0', 'info.size', 'i32') }}};
if (type) {{{ makeSetValue('type', '0', 'info.type', 'i32') }}};
},
glUniform1f__sig: 'vif',
glUniform1f: function(location, v0) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.uniforms, location, 'glUniform1f', 'location');
#endif
GLctx.uniform1f(GL.uniforms[location], v0);
},
glUniform2f__sig: 'viff',
glUniform2f: function(location, v0, v1) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.uniforms, location, 'glUniform2f', 'location');
#endif
GLctx.uniform2f(GL.uniforms[location], v0, v1);
},
glUniform3f__sig: 'vifff',
glUniform3f: function(location, v0, v1, v2) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.uniforms, location, 'glUniform3f', 'location');
#endif
GLctx.uniform3f(GL.uniforms[location], v0, v1, v2);
},
glUniform4f__sig: 'viffff',
glUniform4f: function(location, v0, v1, v2, v3) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.uniforms, location, 'glUniform4f', 'location');
#endif
GLctx.uniform4f(GL.uniforms[location], v0, v1, v2, v3);
},
glUniform1i__sig: 'vii',
glUniform1i: function(location, v0) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.uniforms, location, 'glUniform1i', 'location');
#endif
GLctx.uniform1i(GL.uniforms[location], v0);
},
glUniform2i__sig: 'viii',
glUniform2i: function(location, v0, v1) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.uniforms, location, 'glUniform2i', 'location');
#endif
GLctx.uniform2i(GL.uniforms[location], v0, v1);
},
glUniform3i__sig: 'viiii',
glUniform3i: function(location, v0, v1, v2) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.uniforms, location, 'glUniform3i', 'location');
#endif
GLctx.uniform3i(GL.uniforms[location], v0, v1, v2);
},
glUniform4i__sig: 'viiiii',
glUniform4i: function(location, v0, v1, v2, v3) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.uniforms, location, 'glUniform4i', 'location');
#endif
GLctx.uniform4i(GL.uniforms[location], v0, v1, v2, v3);
},
glUniform1iv__sig: 'viii',
glUniform1iv: function(location, count, value) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.uniforms, location, 'glUniform1iv', 'location');
assert((value & 3) == 0, 'Pointer to integer data passed to glUniform1iv must be aligned to four bytes!');
#endif
#if MAX_WEBGL_VERSION >= 2
if (GL.currentContext.version >= 2) { // WebGL 2 provides new garbage-free entry points to call to WebGL. Use those always when possible.
GLctx.uniform1iv(GL.uniforms[location], HEAP32, value>>2, count);
return;
}
#endif
#if GL_POOL_TEMP_BUFFERS
if (count <= GL.MINI_TEMP_BUFFER_SIZE) {
// avoid allocation when uploading few enough uniforms
var view = GL.miniTempBufferIntViews[count-1];
for (var i = 0; i < count; ++i) {
view[i] = {{{ makeGetValue('value', '4*i', 'i32') }}};
}
} else
#endif
{
var view = {{{ makeHEAPView('32', 'value', 'value+count*4') }}};
#if WORKAROUND_OLD_WEBGL_UNIFORM_UPLOAD_IGNORED_OFFSET_BUG
if (GL.currentContext.cannotHandleOffsetsInUniformArrayViews) view = new Int32Array(view);
#endif
}
GLctx.uniform1iv(GL.uniforms[location], view);
},
glUniform2iv__sig: 'viii',
glUniform2iv: function(location, count, value) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.uniforms, location, 'glUniform2iv', 'location');
assert((value & 3) == 0, 'Pointer to integer data passed to glUniform2iv must be aligned to four bytes!');
#endif
#if MAX_WEBGL_VERSION >= 2
if (GL.currentContext.version >= 2) { // WebGL 2 provides new garbage-free entry points to call to WebGL. Use those always when possible.
GLctx.uniform2iv(GL.uniforms[location], HEAP32, value>>2, count*2);
return;
}
#endif
#if GL_POOL_TEMP_BUFFERS
if (2*count <= GL.MINI_TEMP_BUFFER_SIZE) {
// avoid allocation when uploading few enough uniforms
var view = GL.miniTempBufferIntViews[2*count-1];
for (var i = 0; i < 2*count; i += 2) {
view[i] = {{{ makeGetValue('value', '4*i', 'i32') }}};
view[i+1] = {{{ makeGetValue('value', '4*i+4', 'i32') }}};
}
} else
#endif
{
var view = {{{ makeHEAPView('32', 'value', 'value+count*8') }}};
#if WORKAROUND_OLD_WEBGL_UNIFORM_UPLOAD_IGNORED_OFFSET_BUG
if (GL.currentContext.cannotHandleOffsetsInUniformArrayViews) view = new Int32Array(view);
#endif
}
GLctx.uniform2iv(GL.uniforms[location], view);
},
glUniform3iv__sig: 'viii',
glUniform3iv: function(location, count, value) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.uniforms, location, 'glUniform3iv', 'location');
assert((value & 3) == 0, 'Pointer to integer data passed to glUniform3iv must be aligned to four bytes!');
#endif
#if MAX_WEBGL_VERSION >= 2
if (GL.currentContext.version >= 2) { // WebGL 2 provides new garbage-free entry points to call to WebGL. Use those always when possible.
GLctx.uniform3iv(GL.uniforms[location], HEAP32, value>>2, count*3);
return;
}
#endif
#if GL_POOL_TEMP_BUFFERS
if (3*count <= GL.MINI_TEMP_BUFFER_SIZE) {
// avoid allocation when uploading few enough uniforms
var view = GL.miniTempBufferIntViews[3*count-1];
for (var i = 0; i < 3*count; i += 3) {
view[i] = {{{ makeGetValue('value', '4*i', 'i32') }}};
view[i+1] = {{{ makeGetValue('value', '4*i+4', 'i32') }}};
view[i+2] = {{{ makeGetValue('value', '4*i+8', 'i32') }}};
}
} else
#endif
{
var view = {{{ makeHEAPView('32', 'value', 'value+count*12') }}};
#if WORKAROUND_OLD_WEBGL_UNIFORM_UPLOAD_IGNORED_OFFSET_BUG
if (GL.currentContext.cannotHandleOffsetsInUniformArrayViews) view = new Int32Array(view);
#endif
}
GLctx.uniform3iv(GL.uniforms[location], view);
},
glUniform4iv__sig: 'viii',
glUniform4iv: function(location, count, value) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.uniforms, location, 'glUniform4iv', 'location');
assert((value & 3) == 0, 'Pointer to integer data passed to glUniform4iv must be aligned to four bytes!');
#endif
#if MAX_WEBGL_VERSION >= 2
if (GL.currentContext.version >= 2) { // WebGL 2 provides new garbage-free entry points to call to WebGL. Use those always when possible.
GLctx.uniform4iv(GL.uniforms[location], HEAP32, value>>2, count*4);
return;
}
#endif
#if GL_POOL_TEMP_BUFFERS
if (4*count <= GL.MINI_TEMP_BUFFER_SIZE) {
// avoid allocation when uploading few enough uniforms
var view = GL.miniTempBufferIntViews[4*count-1];
for (var i = 0; i < 4*count; i += 4) {
view[i] = {{{ makeGetValue('value', '4*i', 'i32') }}};
view[i+1] = {{{ makeGetValue('value', '4*i+4', 'i32') }}};
view[i+2] = {{{ makeGetValue('value', '4*i+8', 'i32') }}};
view[i+3] = {{{ makeGetValue('value', '4*i+12', 'i32') }}};
}
} else
#endif
{
var view = {{{ makeHEAPView('32', 'value', 'value+count*16') }}};
#if WORKAROUND_OLD_WEBGL_UNIFORM_UPLOAD_IGNORED_OFFSET_BUG
if (GL.currentContext.cannotHandleOffsetsInUniformArrayViews) view = new Int32Array(view);
#endif
}
GLctx.uniform4iv(GL.uniforms[location], view);
},
glUniform1fv__sig: 'viii',
glUniform1fv: function(location, count, value) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.uniforms, location, 'glUniform1fv', 'location');
assert((value & 3) == 0, 'Pointer to float data passed to glUniform1fv must be aligned to four bytes!');
#endif
#if MAX_WEBGL_VERSION >= 2
if (GL.currentContext.version >= 2) { // WebGL 2 provides new garbage-free entry points to call to WebGL. Use those always when possible.
GLctx.uniform1fv(GL.uniforms[location], HEAPF32, value>>2, count);
return;
}
#endif
#if GL_POOL_TEMP_BUFFERS
if (count <= GL.MINI_TEMP_BUFFER_SIZE) {
// avoid allocation when uploading few enough uniforms
var view = GL.miniTempBufferFloatViews[count-1];
for (var i = 0; i < count; ++i) {
view[i] = {{{ makeGetValue('value', '4*i', 'float') }}};
}
} else
#endif
{
var view = {{{ makeHEAPView('F32', 'value', 'value+count*4') }}};
#if WORKAROUND_OLD_WEBGL_UNIFORM_UPLOAD_IGNORED_OFFSET_BUG
if (GL.currentContext.cannotHandleOffsetsInUniformArrayViews) view = new Float32Array(view);
#endif
}
GLctx.uniform1fv(GL.uniforms[location], view);
},
glUniform2fv__sig: 'viii',
glUniform2fv: function(location, count, value) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.uniforms, location, 'glUniform2fv', 'location');
assert((value & 3) == 0, 'Pointer to float data passed to glUniform2fv must be aligned to four bytes!');
#endif
#if MAX_WEBGL_VERSION >= 2
if (GL.currentContext.version >= 2) { // WebGL 2 provides new garbage-free entry points to call to WebGL. Use those always when possible.
GLctx.uniform2fv(GL.uniforms[location], HEAPF32, value>>2, count*2);
return;
}
#endif
#if GL_POOL_TEMP_BUFFERS
if (2*count <= GL.MINI_TEMP_BUFFER_SIZE) {
// avoid allocation when uploading few enough uniforms
var view = GL.miniTempBufferFloatViews[2*count-1];
for (var i = 0; i < 2*count; i += 2) {
view[i] = {{{ makeGetValue('value', '4*i', 'float') }}};
view[i+1] = {{{ makeGetValue('value', '4*i+4', 'float') }}};
}
} else
#endif
{
var view = {{{ makeHEAPView('F32', 'value', 'value+count*8') }}};
#if WORKAROUND_OLD_WEBGL_UNIFORM_UPLOAD_IGNORED_OFFSET_BUG
if (GL.currentContext.cannotHandleOffsetsInUniformArrayViews) view = new Float32Array(view);
#endif
}
GLctx.uniform2fv(GL.uniforms[location], view);
},
glUniform3fv__sig: 'viii',
glUniform3fv: function(location, count, value) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.uniforms, location, 'glUniform3fv', 'location');
assert((value & 3) == 0, 'Pointer to float data passed to glUniform3fv must be aligned to four bytes!' + value);
#endif
#if MAX_WEBGL_VERSION >= 2
if (GL.currentContext.version >= 2) { // WebGL 2 provides new garbage-free entry points to call to WebGL. Use those always when possible.
GLctx.uniform3fv(GL.uniforms[location], HEAPF32, value>>2, count*3);
return;
}
#endif
#if GL_POOL_TEMP_BUFFERS
if (3*count <= GL.MINI_TEMP_BUFFER_SIZE) {
// avoid allocation when uploading few enough uniforms
var view = GL.miniTempBufferFloatViews[3*count-1];
for (var i = 0; i < 3*count; i += 3) {
view[i] = {{{ makeGetValue('value', '4*i', 'float') }}};
view[i+1] = {{{ makeGetValue('value', '4*i+4', 'float') }}};
view[i+2] = {{{ makeGetValue('value', '4*i+8', 'float') }}};
}
} else
#endif
{
var view = {{{ makeHEAPView('F32', 'value', 'value+count*12') }}};
#if WORKAROUND_OLD_WEBGL_UNIFORM_UPLOAD_IGNORED_OFFSET_BUG
if (GL.currentContext.cannotHandleOffsetsInUniformArrayViews) view = new Float32Array(view);
#endif
}
GLctx.uniform3fv(GL.uniforms[location], view);
},
glUniform4fv__sig: 'viii',
glUniform4fv: function(location, count, value) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.uniforms, location, 'glUniform4fv', 'location');
assert((value & 3) == 0, 'Pointer to float data passed to glUniform4fv must be aligned to four bytes!');
#endif
#if MAX_WEBGL_VERSION >= 2
if (GL.currentContext.version >= 2) { // WebGL 2 provides new garbage-free entry points to call to WebGL. Use those always when possible.
GLctx.uniform4fv(GL.uniforms[location], HEAPF32, value>>2, count*4);
return;
}
#endif
#if GL_POOL_TEMP_BUFFERS
if (4*count <= GL.MINI_TEMP_BUFFER_SIZE) {
// avoid allocation when uploading few enough uniforms
var view = GL.miniTempBufferFloatViews[4*count-1];
// hoist the heap out of the loop for size and for pthreads+growth.
var heap = HEAPF32;
value >>= 2;
for (var i = 0; i < 4 * count; i += 4) {
var dst = value + i;
view[i] = heap[dst];
view[i + 1] = heap[dst + 1];
view[i + 2] = heap[dst + 2];
view[i + 3] = heap[dst + 3];
}
} else
#endif
{
var view = {{{ makeHEAPView('F32', 'value', 'value+count*16') }}};
#if WORKAROUND_OLD_WEBGL_UNIFORM_UPLOAD_IGNORED_OFFSET_BUG
if (GL.currentContext.cannotHandleOffsetsInUniformArrayViews) view = new Float32Array(view);
#endif
}
GLctx.uniform4fv(GL.uniforms[location], view);
},
glUniformMatrix2fv__sig: 'viiii',
glUniformMatrix2fv: function(location, count, transpose, value) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.uniforms, location, 'glUniformMatrix2fv', 'location');
assert((value & 3) == 0, 'Pointer to float data passed to glUniformMatrix2fv must be aligned to four bytes!');
#endif
#if MAX_WEBGL_VERSION >= 2
if (GL.currentContext.version >= 2) { // WebGL 2 provides new garbage-free entry points to call to WebGL. Use those always when possible.
GLctx.uniformMatrix2fv(GL.uniforms[location], !!transpose, HEAPF32, value>>2, count*4);
return;
}
#endif
#if GL_POOL_TEMP_BUFFERS
if (4*count <= GL.MINI_TEMP_BUFFER_SIZE) {
// avoid allocation when uploading few enough uniforms
var view = GL.miniTempBufferFloatViews[4*count-1];
for (var i = 0; i < 4*count; i += 4) {
view[i] = {{{ makeGetValue('value', '4*i', 'float') }}};
view[i+1] = {{{ makeGetValue('value', '4*i+4', 'float') }}};
view[i+2] = {{{ makeGetValue('value', '4*i+8', 'float') }}};
view[i+3] = {{{ makeGetValue('value', '4*i+12', 'float') }}};
}
} else
#endif
{
var view = {{{ makeHEAPView('F32', 'value', 'value+count*16') }}};
#if WORKAROUND_OLD_WEBGL_UNIFORM_UPLOAD_IGNORED_OFFSET_BUG
if (GL.currentContext.cannotHandleOffsetsInUniformArrayViews) view = new Float32Array(view);
#endif
}
GLctx.uniformMatrix2fv(GL.uniforms[location], !!transpose, view);
},
glUniformMatrix3fv__sig: 'viiii',
glUniformMatrix3fv: function(location, count, transpose, value) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.uniforms, location, 'glUniformMatrix3fv', 'location');
assert((value & 3) == 0, 'Pointer to float data passed to glUniformMatrix3fv must be aligned to four bytes!');
#endif
#if MAX_WEBGL_VERSION >= 2
if (GL.currentContext.version >= 2) { // WebGL 2 provides new garbage-free entry points to call to WebGL. Use those always when possible.
GLctx.uniformMatrix3fv(GL.uniforms[location], !!transpose, HEAPF32, value>>2, count*9);
return;
}
#endif
#if GL_POOL_TEMP_BUFFERS
if (9*count <= GL.MINI_TEMP_BUFFER_SIZE) {
// avoid allocation when uploading few enough uniforms
var view = GL.miniTempBufferFloatViews[9*count-1];
for (var i = 0; i < 9*count; i += 9) {
view[i] = {{{ makeGetValue('value', '4*i', 'float') }}};
view[i+1] = {{{ makeGetValue('value', '4*i+4', 'float') }}};
view[i+2] = {{{ makeGetValue('value', '4*i+8', 'float') }}};
view[i+3] = {{{ makeGetValue('value', '4*i+12', 'float') }}};
view[i+4] = {{{ makeGetValue('value', '4*i+16', 'float') }}};
view[i+5] = {{{ makeGetValue('value', '4*i+20', 'float') }}};
view[i+6] = {{{ makeGetValue('value', '4*i+24', 'float') }}};
view[i+7] = {{{ makeGetValue('value', '4*i+28', 'float') }}};
view[i+8] = {{{ makeGetValue('value', '4*i+32', 'float') }}};
}
} else
#endif
{
var view = {{{ makeHEAPView('F32', 'value', 'value+count*36') }}};
#if WORKAROUND_OLD_WEBGL_UNIFORM_UPLOAD_IGNORED_OFFSET_BUG
if (GL.currentContext.cannotHandleOffsetsInUniformArrayViews) view = new Float32Array(view);
#endif
}
GLctx.uniformMatrix3fv(GL.uniforms[location], !!transpose, view);
},
glUniformMatrix4fv__sig: 'viiii',
glUniformMatrix4fv: function(location, count, transpose, value) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.uniforms, location, 'glUniformMatrix4fv', 'location');
assert((value & 3) == 0, 'Pointer to float data passed to glUniformMatrix4fv must be aligned to four bytes!');
#endif
#if MAX_WEBGL_VERSION >= 2
if (GL.currentContext.version >= 2) { // WebGL 2 provides new garbage-free entry points to call to WebGL. Use those always when possible.
GLctx.uniformMatrix4fv(GL.uniforms[location], !!transpose, HEAPF32, value>>2, count*16);
return;
}
#endif
#if GL_POOL_TEMP_BUFFERS
if (16*count <= GL.MINI_TEMP_BUFFER_SIZE) {
// avoid allocation when uploading few enough uniforms
var view = GL.miniTempBufferFloatViews[16*count-1];
// hoist the heap out of the loop for size and for pthreads+growth.
var heap = HEAPF32;
value >>= 2;
for (var i = 0; i < 16 * count; i += 16) {
var dst = value + i;
view[i] = heap[dst];
view[i + 1] = heap[dst + 1];
view[i + 2] = heap[dst + 2];
view[i + 3] = heap[dst + 3];
view[i + 4] = heap[dst + 4];
view[i + 5] = heap[dst + 5];
view[i + 6] = heap[dst + 6];
view[i + 7] = heap[dst + 7];
view[i + 8] = heap[dst + 8];
view[i + 9] = heap[dst + 9];
view[i + 10] = heap[dst + 10];
view[i + 11] = heap[dst + 11];
view[i + 12] = heap[dst + 12];
view[i + 13] = heap[dst + 13];
view[i + 14] = heap[dst + 14];
view[i + 15] = heap[dst + 15];
}
} else
#endif
{
var view = {{{ makeHEAPView('F32', 'value', 'value+count*64') }}};
#if WORKAROUND_OLD_WEBGL_UNIFORM_UPLOAD_IGNORED_OFFSET_BUG
if (GL.currentContext.cannotHandleOffsetsInUniformArrayViews) view = new Float32Array(view);
#endif
}
GLctx.uniformMatrix4fv(GL.uniforms[location], !!transpose, view);
},
glBindBuffer__sig: 'vii',
glBindBuffer: function(target, buffer) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.buffers, buffer, 'glBindBuffer', 'buffer');
#endif
#if FULL_ES2 || LEGACY_GL_EMULATION
if (target == 0x8892 /*GL_ARRAY_BUFFER*/) {
GL.currArrayBuffer = buffer;
#if LEGACY_GL_EMULATION
GLImmediate.lastArrayBuffer = buffer;
#endif
} else if (target == 0x8893 /*GL_ELEMENT_ARRAY_BUFFER*/) {
GL.currElementArrayBuffer = buffer;
}
#endif
#if MAX_WEBGL_VERSION >= 2
if (target == 0x88EB /*GL_PIXEL_PACK_BUFFER*/) {
// In WebGL 2 glReadPixels entry point, we need to use a different WebGL 2 API function call when a buffer is bound to
// GL_PIXEL_PACK_BUFFER_BINDING point, so must keep track whether that binding point is non-null to know what is
// the proper API function to call.
GLctx.currentPixelPackBufferBinding = buffer;
} else if (target == 0x88EC /*GL_PIXEL_UNPACK_BUFFER*/) {
// In WebGL 2 gl(Compressed)Tex(Sub)Image[23]D entry points, we need to
// use a different WebGL 2 API function call when a buffer is bound to
// GL_PIXEL_UNPACK_BUFFER_BINDING point, so must keep track whether that
// binding point is non-null to know what is the proper API function to
// call.
GLctx.currentPixelUnpackBufferBinding = buffer;
}
#endif
GLctx.bindBuffer(target, GL.buffers[buffer]);
},
glVertexAttrib1fv__sig: 'vii',
glVertexAttrib1fv: function(index, v) {
#if GL_ASSERTIONS
assert((v & 3) == 0, 'Pointer to float data passed to glVertexAttrib1fv must be aligned to four bytes!');
assert(v != 0, 'Null pointer passed to glVertexAttrib1fv!');
#endif
GLctx.vertexAttrib1f(index, HEAPF32[v>>2]);
},
glVertexAttrib2fv__sig: 'vii',
glVertexAttrib2fv: function(index, v) {
#if GL_ASSERTIONS
assert((v & 3) == 0, 'Pointer to float data passed to glVertexAttrib2fv must be aligned to four bytes!');
assert(v != 0, 'Null pointer passed to glVertexAttrib2fv!');
#endif
GLctx.vertexAttrib2f(index, HEAPF32[v>>2], HEAPF32[v+4>>2]);
},
glVertexAttrib3fv__sig: 'vii',
glVertexAttrib3fv: function(index, v) {
#if GL_ASSERTIONS
assert((v & 3) == 0, 'Pointer to float data passed to glVertexAttrib3fv must be aligned to four bytes!');
assert(v != 0, 'Null pointer passed to glVertexAttrib3fv!');
#endif
GLctx.vertexAttrib3f(index, HEAPF32[v>>2], HEAPF32[v+4>>2], HEAPF32[v+8>>2]);
},
glVertexAttrib4fv__sig: 'vii',
glVertexAttrib4fv: function(index, v) {
#if GL_ASSERTIONS
assert((v & 3) == 0, 'Pointer to float data passed to glVertexAttrib4fv must be aligned to four bytes!');
assert(v != 0, 'Null pointer passed to glVertexAttrib4fv!');
#endif
GLctx.vertexAttrib4f(index, HEAPF32[v>>2], HEAPF32[v+4>>2], HEAPF32[v+8>>2], HEAPF32[v+12>>2]);
},
glGetAttribLocation__sig: 'iii',
glGetAttribLocation: function(program, name) {
return GLctx.getAttribLocation(GL.programs[program], UTF8ToString(name));
},
glGetActiveAttrib__sig: 'viiiiiii',
glGetActiveAttrib: function(program, index, bufSize, length, size, type, name) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.programs, program, 'glGetActiveAttrib', 'program');
#endif
program = GL.programs[program];
var info = GLctx.getActiveAttrib(program, index);
if (!info) return; // If an error occurs, nothing will be written to length, size and type and name.
var numBytesWrittenExclNull = (bufSize > 0 && name) ? stringToUTF8(info.name, name, bufSize) : 0;
if (length) {{{ makeSetValue('length', '0', 'numBytesWrittenExclNull', 'i32') }}};
if (size) {{{ makeSetValue('size', '0', 'info.size', 'i32') }}};
if (type) {{{ makeSetValue('type', '0', 'info.type', 'i32') }}};
},
glCreateShader__sig: 'ii',
glCreateShader: function(shaderType) {
var id = GL.getNewId(GL.shaders);
GL.shaders[id] = GLctx.createShader(shaderType);
return id;
},
glDeleteShader__sig: 'vi',
glDeleteShader: function(id) {
if (!id) return;
var shader = GL.shaders[id];
if (!shader) { // glDeleteShader actually signals an error when deleting a nonexisting object, unlike some other GL delete functions.
GL.recordError(0x501 /* GL_INVALID_VALUE */);
return;
}
GLctx.deleteShader(shader);
GL.shaders[id] = null;
},
glGetAttachedShaders__sig: 'viiii',
glGetAttachedShaders: function(program, maxCount, count, shaders) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.programs, program, 'glGetAttachedShaders', 'program');
#endif
var result = GLctx.getAttachedShaders(GL.programs[program]);
var len = result.length;
if (len > maxCount) {
len = maxCount;
}
{{{ makeSetValue('count', '0', 'len', 'i32') }}};
for (var i = 0; i < len; ++i) {
var id = GL.shaders.indexOf(result[i]);
#if GL_ASSERTIONS
assert(id !== -1, 'shader not bound to local id');
#endif
{{{ makeSetValue('shaders', 'i*4', 'id', 'i32') }}};
}
},
glShaderSource__sig: 'viiii',
glShaderSource: function(shader, count, string, length) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.shaders, shader, 'glShaderSource', 'shader');
#endif
var source = GL.getSource(shader, count, string, length);
#if WEBGL2_BACKWARDS_COMPATIBILITY_EMULATION
if (GL.currentContext.version >= 2) {
// If a WebGL 1 shader happens to use GL_EXT_shader_texture_lod extension,
// it will not compile on WebGL 2, because WebGL 2 no longer supports that
// extension for WebGL 1 shaders. Therefore upgrade shaders to WebGL 2
// by doing a bunch of dirty hacks. Not guaranteed to work on all shaders.
// One might consider doing this for only the shaders that actually use
// the GL_EXT_shader_texture_lod extension, but the problem is that
// vertex and fragment shader versions need to match, and when compiling
// the corresponding vertex shader, we would not know if that needed to
// be compiled with or without the patch, so we must patch all shaders.
if (source.indexOf('#version 100') != -1) {
source = source.replace(/#extension GL_OES_standard_derivatives : enable/g, "");
source = source.replace(/#extension GL_EXT_shader_texture_lod : enable/g, '');
var prelude = '';
if (source.indexOf('gl_FragColor') != -1) {
prelude += 'out mediump vec4 GL_FragColor;\n';
source = source.replace(/gl_FragColor/g, 'GL_FragColor');
}
if (source.indexOf('attribute') != -1) {
source = source.replace(/attribute/g, 'in');
source = source.replace(/varying/g, 'out');
} else {
source = source.replace(/varying/g, 'in');
}
source = source.replace(/textureCubeLodEXT/g, 'textureCubeLod');
source = source.replace(/texture2DLodEXT/g, 'texture2DLod');
source = source.replace(/texture2DProjLodEXT/g, 'texture2DProjLod');
source = source.replace(/texture2DGradEXT/g, 'texture2DGrad');
source = source.replace(/texture2DProjGradEXT/g, 'texture2DProjGrad');
source = source.replace(/textureCubeGradEXT/g, 'textureCubeGrad');
source = source.replace(/textureCube/g, 'texture');
source = source.replace(/texture1D/g, 'texture');
source = source.replace(/texture2D/g, 'texture');
source = source.replace(/texture3D/g, 'texture');
source = source.replace(/#version 100/g, '#version 300 es\n' + prelude);
}
}
#endif
GLctx.shaderSource(GL.shaders[shader], source);
},
glGetShaderSource__sig: 'viiii',
glGetShaderSource: function(shader, bufSize, length, source) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.shaders, shader, 'glGetShaderSource', 'shader');
#endif
var result = GLctx.getShaderSource(GL.shaders[shader]);
if (!result) return; // If an error occurs, nothing will be written to length or source.
var numBytesWrittenExclNull = (bufSize > 0 && source) ? stringToUTF8(result, source, bufSize) : 0;
if (length) {{{ makeSetValue('length', '0', 'numBytesWrittenExclNull', 'i32') }}};
},
glCompileShader__sig: 'vi',
glCompileShader: function(shader) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.shaders, shader, 'glCompileShader', 'shader');
#endif
GLctx.compileShader(GL.shaders[shader]);
#if GL_DEBUG
var log = (GLctx.getShaderInfoLog(GL.shaders[shader]) || '').trim();
if (log) console.error('glCompileShader: ' + log);
#endif
},
glGetShaderInfoLog__sig: 'viiii',
glGetShaderInfoLog: function(shader, maxLength, length, infoLog) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.shaders, shader, 'glGetShaderInfoLog', 'shader');
#endif
var log = GLctx.getShaderInfoLog(GL.shaders[shader]);
#if GL_ASSERTIONS || GL_TRACK_ERRORS
if (log === null) log = '(unknown error)';
#endif
var numBytesWrittenExclNull = (maxLength > 0 && infoLog) ? stringToUTF8(log, infoLog, maxLength) : 0;
if (length) {{{ makeSetValue('length', '0', 'numBytesWrittenExclNull', 'i32') }}};
},
glGetShaderiv__sig: 'viii',
glGetShaderiv : function(shader, pname, p) {
if (!p) {
// GLES2 specification does not specify how to behave if p is a null pointer. Since calling this function does not make sense
// if p == null, issue a GL error to notify user about it.
#if GL_ASSERTIONS
err('GL_INVALID_VALUE in glGetShaderiv(shader=' + shader + ', pname=' + pname + ', p=0): Function called with null out pointer!');
#endif
GL.recordError(0x501 /* GL_INVALID_VALUE */);
return;
}
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.shaders, shader, 'glGetShaderiv', 'shader');
#endif
if (pname == 0x8B84) { // GL_INFO_LOG_LENGTH
var log = GLctx.getShaderInfoLog(GL.shaders[shader]);
#if GL_ASSERTIONS || GL_TRACK_ERRORS
if (log === null) log = '(unknown error)';
#endif
{{{ makeSetValue('p', '0', 'log.length + 1', 'i32') }}};
} else if (pname == 0x8B88) { // GL_SHADER_SOURCE_LENGTH
var source = GLctx.getShaderSource(GL.shaders[shader]);
var sourceLength = (source === null || source.length == 0) ? 0 : source.length + 1;
{{{ makeSetValue('p', '0', 'sourceLength', 'i32') }}};
} else {
{{{ makeSetValue('p', '0', 'GLctx.getShaderParameter(GL.shaders[shader], pname)', 'i32') }}};
}
},
glGetProgramiv__sig: 'viii',
glGetProgramiv : function(program, pname, p) {
if (!p) {
// GLES2 specification does not specify how to behave if p is a null pointer. Since calling this function does not make sense
// if p == null, issue a GL error to notify user about it.
#if GL_ASSERTIONS
err('GL_INVALID_VALUE in glGetProgramiv(program=' + program + ', pname=' + pname + ', p=0): Function called with null out pointer!');
#endif
GL.recordError(0x501 /* GL_INVALID_VALUE */);
return;
}
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.programs, program, 'glGetProgramiv', 'program');
#endif
if (program >= GL.counter) {
#if GL_ASSERTIONS
err('GL_INVALID_VALUE in glGetProgramiv(program=' + program + ', pname=' + pname + ', p=0x' + p.toString(16) + '): The specified program object name was not generated by GL!');
#endif
GL.recordError(0x501 /* GL_INVALID_VALUE */);
return;
}
var ptable = GL.programInfos[program];
if (!ptable) {
#if GL_ASSERTIONS
err('GL_INVALID_OPERATION in glGetProgramiv(program=' + program + ', pname=' + pname + ', p=0x' + p.toString(16) + '): The specified GL object name does not refer to a program object!');
#endif
GL.recordError(0x502 /* GL_INVALID_OPERATION */);
return;
}
if (pname == 0x8B84) { // GL_INFO_LOG_LENGTH
var log = GLctx.getProgramInfoLog(GL.programs[program]);
#if GL_ASSERTIONS || GL_TRACK_ERRORS
if (log === null) log = '(unknown error)';
#endif
{{{ makeSetValue('p', '0', 'log.length + 1', 'i32') }}};
} else if (pname == 0x8B87 /* GL_ACTIVE_UNIFORM_MAX_LENGTH */) {
{{{ makeSetValue('p', '0', 'ptable.maxUniformLength', 'i32') }}};
} else if (pname == 0x8B8A /* GL_ACTIVE_ATTRIBUTE_MAX_LENGTH */) {
if (ptable.maxAttributeLength == -1) {
program = GL.programs[program];
var numAttribs = GLctx.getProgramParameter(program, 0x8B89/*GL_ACTIVE_ATTRIBUTES*/);
ptable.maxAttributeLength = 0; // Spec says if there are no active attribs, 0 must be returned.
for (var i = 0; i < numAttribs; ++i) {
var activeAttrib = GLctx.getActiveAttrib(program, i);
ptable.maxAttributeLength = Math.max(ptable.maxAttributeLength, activeAttrib.name.length+1);
}
}
{{{ makeSetValue('p', '0', 'ptable.maxAttributeLength', 'i32') }}};
} else if (pname == 0x8A35 /* GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH */) {
if (ptable.maxUniformBlockNameLength == -1) {
program = GL.programs[program];
var numBlocks = GLctx.getProgramParameter(program, 0x8A36/*GL_ACTIVE_UNIFORM_BLOCKS*/);
ptable.maxUniformBlockNameLength = 0;
for (var i = 0; i < numBlocks; ++i) {
var activeBlockName = GLctx.getActiveUniformBlockName(program, i);
ptable.maxUniformBlockNameLength = Math.max(ptable.maxUniformBlockNameLength, activeBlockName.length+1);
}
}
{{{ makeSetValue('p', '0', 'ptable.maxUniformBlockNameLength', 'i32') }}};
} else {
{{{ makeSetValue('p', '0', 'GLctx.getProgramParameter(GL.programs[program], pname)', 'i32') }}};
}
},
glIsShader__sig: 'ii',
glIsShader: function(shader) {
var s = GL.shaders[shader];
if (!s) return 0;
return GLctx.isShader(s);
},
glCreateProgram__sig: 'i',
glCreateProgram: function() {
var id = GL.getNewId(GL.programs);
var program = GLctx.createProgram();
program.name = id;
GL.programs[id] = program;
return id;
},
glDeleteProgram__sig: 'vi',
glDeleteProgram: function(id) {
if (!id) return;
var program = GL.programs[id];
if (!program) { // glDeleteProgram actually signals an error when deleting a nonexisting object, unlike some other GL delete functions.
GL.recordError(0x501 /* GL_INVALID_VALUE */);
return;
}
GLctx.deleteProgram(program);
program.name = 0;
GL.programs[id] = null;
GL.programInfos[id] = null;
},
glAttachShader__sig: 'vii',
glAttachShader: function(program, shader) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.programs, program, 'glAttachShader', 'program');
GL.validateGLObjectID(GL.shaders, shader, 'glAttachShader', 'shader');
#endif
GLctx.attachShader(GL.programs[program],
GL.shaders[shader]);
},
glDetachShader__sig: 'vii',
glDetachShader: function(program, shader) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.programs, program, 'glDetachShader', 'program');
GL.validateGLObjectID(GL.shaders, shader, 'glDetachShader', 'shader');
#endif
GLctx.detachShader(GL.programs[program],
GL.shaders[shader]);
},
glGetShaderPrecisionFormat__sig: 'viiii',
glGetShaderPrecisionFormat: function(shaderType, precisionType, range, precision) {
var result = GLctx.getShaderPrecisionFormat(shaderType, precisionType);
{{{ makeSetValue('range', '0', 'result.rangeMin', 'i32') }}};
{{{ makeSetValue('range', '4', 'result.rangeMax', 'i32') }}};
{{{ makeSetValue('precision', '0', 'result.precision', 'i32') }}};
},
glLinkProgram__sig: 'vi',
glLinkProgram: function(program) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.programs, program, 'glLinkProgram', 'program');
#endif
GLctx.linkProgram(GL.programs[program]);
#if GL_DEBUG
var log = (GLctx.getProgramInfoLog(GL.programs[program]) || '').trim();
if (log) console.error('glLinkProgram: ' + log);
#endif
GL.populateUniformTable(program);
},
glGetProgramInfoLog__sig: 'viiii',
glGetProgramInfoLog: function(program, maxLength, length, infoLog) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.programs, program, 'glGetProgramInfoLog', 'program');
#endif
var log = GLctx.getProgramInfoLog(GL.programs[program]);
#if GL_ASSERTIONS || GL_TRACK_ERRORS
if (log === null) log = '(unknown error)';
#endif
var numBytesWrittenExclNull = (maxLength > 0 && infoLog) ? stringToUTF8(log, infoLog, maxLength) : 0;
if (length) {{{ makeSetValue('length', '0', 'numBytesWrittenExclNull', 'i32') }}};
},
glUseProgram__sig: 'vi',
glUseProgram: function(program) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.programs, program, 'glUseProgram', 'program');
#endif
GLctx.useProgram(GL.programs[program]);
},
glValidateProgram__sig: 'vi',
glValidateProgram: function(program) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.programs, program, 'glValidateProgram', 'program');
#endif
GLctx.validateProgram(GL.programs[program]);
},
glIsProgram__sig: 'ii',
glIsProgram: function(program) {
program = GL.programs[program];
if (!program) return 0;
return GLctx.isProgram(program);
},
glBindAttribLocation__sig: 'viii',
glBindAttribLocation: function(program, index, name) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.programs, program, 'glBindAttribLocation', 'program');
#endif
GLctx.bindAttribLocation(GL.programs[program], index, UTF8ToString(name));
},
glBindFramebuffer__sig: 'vii',
glBindFramebuffer: function(target, framebuffer) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.framebuffers, framebuffer, 'glBindFramebuffer', 'framebuffer');
#endif
#if OFFSCREEN_FRAMEBUFFER
// defaultFbo may not be present if 'renderViaOffscreenBackBuffer' was not enabled during context creation time,
// i.e. setting -s OFFSCREEN_FRAMEBUFFER=1 at compilation time does not yet mandate that offscreen back buffer
// is being used, but that is ultimately decided at context creation time.
GLctx.bindFramebuffer(target, framebuffer ? GL.framebuffers[framebuffer] : GL.currentContext.defaultFbo);
#else
GLctx.bindFramebuffer(target, GL.framebuffers[framebuffer]);
#endif
},
glGenFramebuffers__sig: 'vii',
glGenFramebuffers__deps: ['_glGenObject'],
glGenFramebuffers: function(n, ids) {
__glGenObject(n, ids, 'createFramebuffer', GL.framebuffers
#if GL_ASSERTIONS
, 'glGenFramebuffers'
#endif
);
},
glDeleteFramebuffers__sig: 'vii',
glDeleteFramebuffers: function(n, framebuffers) {
for (var i = 0; i < n; ++i) {
var id = {{{ makeGetValue('framebuffers', 'i*4', 'i32') }}};
var framebuffer = GL.framebuffers[id];
if (!framebuffer) continue; // GL spec: "glDeleteFramebuffers silently ignores 0s and names that do not correspond to existing framebuffer objects".
GLctx.deleteFramebuffer(framebuffer);
framebuffer.name = 0;
GL.framebuffers[id] = null;
}
},
glFramebufferRenderbuffer__sig: 'viiii',
glFramebufferRenderbuffer: function(target, attachment, renderbuffertarget, renderbuffer) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.renderbuffers, renderbuffer, 'glFramebufferRenderbuffer', 'renderbuffer');
#endif
GLctx.framebufferRenderbuffer(target, attachment, renderbuffertarget,
GL.renderbuffers[renderbuffer]);
},
glFramebufferTexture2D__sig: 'viiiii',
glFramebufferTexture2D: function(target, attachment, textarget, texture, level) {
#if GL_ASSERTIONS
GL.validateGLObjectID(GL.textures, texture, 'glFramebufferTexture2D', 'texture');
#endif
GLctx.framebufferTexture2D(target, attachment, textarget,
GL.textures[texture], level);
},
glGetFramebufferAttachmentParameteriv__sig: 'viiii',
glGetFramebufferAttachmentParameteriv: function(target, attachment, pname, params) {
var result = GLctx.getFramebufferAttachmentParameter(target, attachment, pname);
if (result instanceof WebGLRenderbuffer ||
result instanceof WebGLTexture) {
result = result.name | 0;
}
{{{ makeSetValue('params', '0', 'result', 'i32') }}};
},
glIsFramebuffer__sig: 'ii',
glIsFramebuffer: function(framebuffer) {
var fb = GL.framebuffers[framebuffer];
if (!fb) return 0;
return GLctx.isFramebuffer(fb);
},
glGenVertexArrays__deps: ['_glGenObject'
#if LEGACY_GL_EMULATION
, 'emulGlGenVertexArrays'
#endif
],
glGenVertexArrays__sig: 'vii',
glGenVertexArrays: function (n, arrays) {
#if LEGACY_GL_EMULATION
_emulGlGenVertexArrays(n, arrays);
#else
#if GL_ASSERTIONS
assert(GLctx['createVertexArray'], 'Must have WebGL2 or OES_vertex_array_object to use vao');
#endif
__glGenObject(n, arrays, 'createVertexArray', GL.vaos
#if GL_ASSERTIONS
, 'glGenVertexArrays'
#endif
);
#endif
},
#if LEGACY_GL_EMULATION
glDeleteVertexArrays__deps: ['emulGlDeleteVertexArrays'],
#endif
glDeleteVertexArrays__sig: 'vii',
glDeleteVertexArrays: function(n, vaos) {
#if LEGACY_GL_EMULATION
_emulGlDeleteVertexArrays(n, vaos);
#else
#if GL_ASSERTIONS
assert(GLctx['deleteVertexArray'], 'Must have WebGL2 or OES_vertex_array_object to use vao');
#endif
for (var i = 0; i < n; i++) {
var id = {{{ makeGetValue('vaos', 'i*4', 'i32') }}};
GLctx['deleteVertexArray'](GL.vaos[id]);
GL.vaos[id] = null;
}
#endif
},
#if LEGACY_GL_EMULATION
glBindVertexArray__deps: ['emulGlBindVertexArray'],
#endif
glBindVertexArray__sig: 'vi',
glBindVertexArray: function(vao) {
#if LEGACY_GL_EMULATION
_emulGlBindVertexArray(vao);
#else
#if GL_ASSERTIONS
assert(GLctx['bindVertexArray'], 'Must have WebGL2 or OES_vertex_array_object to use vao');
#endif
GLctx['bindVertexArray'](GL.vaos[vao]);
#endif
#if FULL_ES2 || LEGACY_GL_EMULATION
var ibo = GLctx.getParameter(0x8895 /*ELEMENT_ARRAY_BUFFER_BINDING*/);
GL.currElementArrayBuffer = ibo ? (ibo.name | 0) : 0;
#endif
},
#if LEGACY_GL_EMULATION
glIsVertexArray__deps: ['emulGlIsVertexArray'],
#endif
glIsVertexArray__sig: 'ii',
glIsVertexArray: function(array) {
#if LEGACY_GL_EMULATION
return _emulGlIsVertexArray(array);
#else
#if GL_ASSERTIONS
assert(GLctx['isVertexArray'], 'Must have WebGL2 or OES_vertex_array_object to use vao');
#endif
var vao = GL.vaos[array];
if (!vao) return 0;
return GLctx['isVertexArray'](vao);
#endif
},
#if !LEGACY_GL_EMULATION
glVertexPointer: function(){ throw 'Legacy GL function (glVertexPointer) called. If you want legacy GL emulation, you need to compile with -s LEGACY_GL_EMULATION=1 to enable legacy GL emulation.'; },
glMatrixMode: function(){ throw 'Legacy GL function (glMatrixMode) called. If you want legacy GL emulation, you need to compile with -s LEGACY_GL_EMULATION=1 to enable legacy GL emulation.'; },
glBegin: function(){ throw 'Legacy GL function (glBegin) called. If you want legacy GL emulation, you need to compile with -s LEGACY_GL_EMULATION=1 to enable legacy GL emulation.'; },
glLoadIdentity: function(){ throw 'Legacy GL function (glLoadIdentity) called. If you want legacy GL emulation, you need to compile with -s LEGACY_GL_EMULATION=1 to enable legacy GL emulation.'; },
#endif // LEGACY_GL_EMULATION
// Open GLES1.1 vao compatibility (Could work w/o -s LEGACY_GL_EMULATION=1)
glGenVertexArraysOES: 'glGenVertexArrays',
glDeleteVertexArraysOES: 'glDeleteVertexArrays',
glBindVertexArrayOES: 'glBindVertexArray',
glIsVertexArrayOES: 'glIsVertexArray',
// GLU
gluPerspective: function(fov, aspect, near, far) {
GLImmediate.matricesModified = true;
GLImmediate.matrixVersion[GLImmediate.currentMatrix] = (GLImmediate.matrixVersion[GLImmediate.currentMatrix] + 1)|0;
GLImmediate.matrix[GLImmediate.currentMatrix] =
GLImmediate.matrixLib.mat4.perspective(fov, aspect, near, far,
GLImmediate.matrix[GLImmediate.currentMatrix]);
},
gluLookAt: function(ex, ey, ez, cx, cy, cz, ux, uy, uz) {
GLImmediate.matricesModified = true;
GLImmediate.matrixVersion[GLImmediate.currentMatrix] = (GLImmediate.matrixVersion[GLImmediate.currentMatrix] + 1)|0;
GLImmediate.matrixLib.mat4.lookAt(GLImmediate.matrix[GLImmediate.currentMatrix], [ex, ey, ez],
[cx, cy, cz], [ux, uy, uz]);
},
gluProject: function(objX, objY, objZ, model, proj, view, winX, winY, winZ) {
// The algorithm for this functions comes from Mesa
var inVec = new Float32Array(4);
var outVec = new Float32Array(4);
GLImmediate.matrixLib.mat4.multiplyVec4({{{ makeHEAPView('F64', 'model', 'model+' + (16*8)) }}},
[objX, objY, objZ, 1.0], outVec);
GLImmediate.matrixLib.mat4.multiplyVec4({{{ makeHEAPView('F64', 'proj', 'proj+' + (16*8)) }}},
outVec, inVec);
if (inVec[3] == 0.0) {
return 0 /* GL_FALSE */;
}
inVec[0] /= inVec[3];
inVec[1] /= inVec[3];
inVec[2] /= inVec[3];
// Map x, y and z to range 0-1 */
inVec[0] = inVec[0] * 0.5 + 0.5;
inVec[1] = inVec[1] * 0.5 + 0.5;
inVec[2] = inVec[2] * 0.5 + 0.5;
// Map x, y to viewport
inVec[0] = inVec[0] * {{{ makeGetValue('view', 2*4, 'i32') }}} + {{{ makeGetValue('view', 0*4, 'i32') }}};
inVec[1] = inVec[1] * {{{ makeGetValue('view', 3*4, 'i32') }}} + {{{ makeGetValue('view', 1*4, 'i32') }}};
{{{ makeSetValue('winX', '0', 'inVec[0]', 'double') }}};
{{{ makeSetValue('winY', '0', 'inVec[1]', 'double') }}};
{{{ makeSetValue('winZ', '0', 'inVec[2]', 'double') }}};
return 1 /* GL_TRUE */;
},
gluUnProject: function(winX, winY, winZ, model, proj, view, objX, objY, objZ) {
var result = GLImmediate.matrixLib.mat4.unproject([winX, winY, winZ],
{{{ makeHEAPView('F64', 'model', 'model+' + (16*8)) }}},
{{{ makeHEAPView('F64', 'proj', 'proj+' + (16*8)) }}},
{{{ makeHEAPView('32', 'view', 'view+' + (4*4)) }}});
if (result === null) {
return 0 /* GL_FALSE */;
}
{{{ makeSetValue('objX', '0', 'result[0]', 'double') }}};
{{{ makeSetValue('objY', '0', 'result[1]', 'double') }}};
{{{ makeSetValue('objZ', '0', 'result[2]', 'double') }}};
return 1 /* GL_TRUE */;
},
gluOrtho2D__deps: ['glOrtho'],
gluOrtho2D: function(left, right, bottom, top) {
_glOrtho(left, right, bottom, top, -1, 1);
},
// GLES2 emulation
glVertexAttribPointer__sig: 'viiiiii',
glVertexAttribPointer: function(index, size, type, normalized, stride, ptr) {
#if FULL_ES2
var cb = GL.currentContext.clientBuffers[index];
#if GL_ASSERTIONS
assert(cb, index);
#endif
if (!GL.currArrayBuffer) {
cb.size = size;
cb.type = type;
cb.normalized = normalized;
cb.stride = stride;
cb.ptr = ptr;
cb.clientside = true;
cb.vertexAttribPointerAdaptor = function(index, size, type, normalized, stride, ptr) {
this.vertexAttribPointer(index, size, type, normalized, stride, ptr);
};
return;
}
cb.clientside = false;
#endif
#if GL_ASSERTIONS
GL.validateVertexAttribPointer(size, type, stride, ptr);
#endif
GLctx.vertexAttribPointer(index, size, type, !!normalized, stride, ptr);
},
glEnableVertexAttribArray__sig: 'vi',
glEnableVertexAttribArray: function(index) {
#if FULL_ES2
var cb = GL.currentContext.clientBuffers[index];
#if GL_ASSERTIONS
assert(cb, index);
#endif
cb.enabled = true;
#endif
GLctx.enableVertexAttribArray(index);
},
glDisableVertexAttribArray__sig: 'vi',
glDisableVertexAttribArray: function(index) {
#if FULL_ES2
var cb = GL.currentContext.clientBuffers[index];
#if GL_ASSERTIONS
assert(cb, index);
#endif
cb.enabled = false;
#endif
GLctx.disableVertexAttribArray(index);
},
#if !LEGACY_GL_EMULATION
glDrawArrays__sig: 'viii',
glDrawArrays: function(mode, first, count) {
#if FULL_ES2
// bind any client-side buffers
GL.preDrawHandleClientVertexAttribBindings(first + count);
#endif
GLctx.drawArrays(mode, first, count);
#if FULL_ES2
GL.postDrawHandleClientVertexAttribBindings();
#endif
},
glDrawElements__sig: 'viiii',
glDrawElements: function(mode, count, type, indices) {
#if FULL_ES2
var buf;
if (!GL.currElementArrayBuffer) {
var size = GL.calcBufLength(1, type, 0, count);
buf = GL.getTempIndexBuffer(size);
GLctx.bindBuffer(0x8893 /*GL_ELEMENT_ARRAY_BUFFER*/, buf);
GLctx.bufferSubData(0x8893 /*GL_ELEMENT_ARRAY_BUFFER*/,
0,
HEAPU8.subarray(indices, indices + size));
// the index is now 0
indices = 0;
}
// bind any client-side buffers
GL.preDrawHandleClientVertexAttribBindings(count);
#endif
GLctx.drawElements(mode, count, type, indices);
#if FULL_ES2
GL.postDrawHandleClientVertexAttribBindings(count);
if (!GL.currElementArrayBuffer) {
GLctx.bindBuffer(0x8893 /*GL_ELEMENT_ARRAY_BUFFER*/, null);
}
#endif
},
#endif // ~#if !LEGACY_GL_EMULATION
glShaderBinary__sig: 'v',
glShaderBinary: function() {
GL.recordError(0x500/*GL_INVALID_ENUM*/);
#if GL_ASSERTIONS
err("GL_INVALID_ENUM in glShaderBinary: WebGL does not support binary shader formats! Calls to glShaderBinary always fail.");
#endif
},
glReleaseShaderCompiler__sig: 'v',
glReleaseShaderCompiler: function() {
// NOP (as allowed by GLES 2.0 spec)
},
glGetError__sig: 'i',
glGetError: function() {
#if GL_TRACK_ERRORS
var error = GLctx.getError() || GL.lastError;
GL.lastError = 0/*GL_NO_ERROR*/;
return error;
#else
return GLctx.getError();
#endif
},
// ANGLE_instanced_arrays WebGL extension related functions (in core in WebGL 2)
glVertexAttribDivisor__sig: 'vii',
glVertexAttribDivisor: function(index, divisor) {
#if GL_ASSERTIONS
assert(GLctx['vertexAttribDivisor'], 'Must have ANGLE_instanced_arrays extension or WebGL 2 to use WebGL instancing');
#endif
GLctx['vertexAttribDivisor'](index, divisor);
},
glDrawArraysInstanced__sig: 'viiii',
glDrawArraysInstanced: function(mode, first, count, primcount) {
#if GL_ASSERTIONS
assert(GLctx['drawArraysInstanced'], 'Must have ANGLE_instanced_arrays extension or WebGL 2 to use WebGL instancing');
#endif
GLctx['drawArraysInstanced'](mode, first, count, primcount);
},
glDrawElementsInstanced__sig: 'viiiii',
glDrawElementsInstanced: function(mode, count, type, indices, primcount) {
#if GL_ASSERTIONS
assert(GLctx['drawElementsInstanced'], 'Must have ANGLE_instanced_arrays extension or WebGL 2 to use WebGL instancing');
#endif
GLctx['drawElementsInstanced'](mode, count, type, indices, primcount);
},
// OpenGL Desktop/ES 2.0 instancing extensions compatibility
glVertexAttribDivisorNV: 'glVertexAttribDivisor',
glDrawArraysInstancedNV: 'glDrawArraysInstanced',
glDrawElementsInstancedNV: 'glDrawElementsInstanced',
glVertexAttribDivisorEXT: 'glVertexAttribDivisor',
glDrawArraysInstancedEXT: 'glDrawArraysInstanced',
glDrawElementsInstancedEXT: 'glDrawElementsInstanced',
glVertexAttribDivisorARB: 'glVertexAttribDivisor',
glDrawArraysInstancedARB: 'glDrawArraysInstanced',
glDrawElementsInstancedARB: 'glDrawElementsInstanced',
glVertexAttribDivisorANGLE: 'glVertexAttribDivisor',
glDrawArraysInstancedANGLE: 'glDrawArraysInstanced',
glDrawElementsInstancedANGLE: 'glDrawElementsInstanced',
glDrawBuffers__deps: ['_tempFixedLengthArray'],
glDrawBuffers__sig: 'vii',
glDrawBuffers: function(n, bufs) {
#if GL_ASSERTIONS
assert(GLctx['drawBuffers'], 'Must have WebGL2 or WEBGL_draw_buffers extension to use drawBuffers');
#endif
#if GL_ASSERTIONS
assert(n < __tempFixedLengthArray.length, 'Invalid count of numBuffers=' + n + ' passed to glDrawBuffers (that many draw buffer points do not exist in GL)');
#endif
var bufArray = __tempFixedLengthArray[n];
for (var i = 0; i < n; i++) {
bufArray[i] = {{{ makeGetValue('bufs', 'i*4', 'i32') }}};
}
GLctx['drawBuffers'](bufArray);
},
// OpenGL ES 2.0 draw buffer extensions compatibility
glDrawBuffersEXT: 'glDrawBuffers',
glDrawBuffersWEBGL: 'glDrawBuffers',
// passthrough functions with GLboolean parameters
glColorMask__sig: 'viiii',
glColorMask: function(red, green, blue, alpha) {
GLctx.colorMask(!!red, !!green, !!blue, !!alpha);
},
glDepthMask__sig: 'vi',
glDepthMask: function(flag) {
GLctx.depthMask(!!flag);
},
glSampleCoverage__sig: 'vii',
glSampleCoverage: function(value, invert) {
GLctx.sampleCoverage(value, !!invert);
},
// As a small peculiarity, we currently allow building with -s FULL_ES3=1 to emulate client side arrays,
// but without targeting WebGL 2, so this FULL_ES3 block is in library_webgl.js instead of library_webgl2.js
#if FULL_ES3
$emscriptenWebGLGetBufferBinding: function(target) {
switch(target) {
case 0x8892 /*GL_ARRAY_BUFFER*/: target = 0x8894 /*GL_ARRAY_BUFFER_BINDING*/; break;
case 0x8893 /*GL_ELEMENT_ARRAY_BUFFER*/: target = 0x8895 /*GL_ELEMENT_ARRAY_BUFFER_BINDING*/; break;
case 0x88EB /*GL_PIXEL_PACK_BUFFER*/: target = 0x88ED /*GL_PIXEL_PACK_BUFFER_BINDING*/; break;
case 0x88EC /*GL_PIXEL_UNPACK_BUFFER*/: target = 0x88EF /*GL_PIXEL_UNPACK_BUFFER_BINDING*/; break;
case 0x8C8E /*GL_TRANSFORM_FEEDBACK_BUFFER*/: target = 0x8C8F /*GL_TRANSFORM_FEEDBACK_BUFFER_BINDING*/; break;
case 0x8F36 /*GL_COPY_READ_BUFFER*/: target = 0x8F36 /*GL_COPY_READ_BUFFER_BINDING*/; break;
case 0x8F37 /*GL_COPY_WRITE_BUFFER*/: target = 0x8F37 /*GL_COPY_WRITE_BUFFER_BINDING*/; break;
case 0x8A11 /*GL_UNIFORM_BUFFER*/: target = 0x8A28 /*GL_UNIFORM_BUFFER_BINDING*/; break;
// In default case, fall through and assume passed one of the _BINDING enums directly.
}
var buffer = GLctx.getParameter(target);
if (buffer) return buffer.name|0;
else return 0;
},
$emscriptenWebGLValidateMapBufferTarget: function(target) {
switch (target) {
case 0x8892: // GL_ARRAY_BUFFER
case 0x8893: // GL_ELEMENT_ARRAY_BUFFER
case 0x8F36: // GL_COPY_READ_BUFFER
case 0x8F37: // GL_COPY_WRITE_BUFFER
case 0x88EB: // GL_PIXEL_PACK_BUFFER
case 0x88EC: // GL_PIXEL_UNPACK_BUFFER
case 0x8C2A: // GL_TEXTURE_BUFFER
case 0x8C8E: // GL_TRANSFORM_FEEDBACK_BUFFER
case 0x8A11: // GL_UNIFORM_BUFFER
return true;
default:
return false;
}
},
glMapBufferRange__sig: 'iiiii',
glMapBufferRange__deps: ['$emscriptenWebGLGetBufferBinding', '$emscriptenWebGLValidateMapBufferTarget'],
glMapBufferRange: function(target, offset, length, access) {
if (access != 0x1A && access != 0xA) {
err("glMapBufferRange is only supported when access is MAP_WRITE|INVALIDATE_BUFFER");
return 0;
}
if (!emscriptenWebGLValidateMapBufferTarget(target)) {
GL.recordError(0x500/*GL_INVALID_ENUM*/);
err('GL_INVALID_ENUM in glMapBufferRange');
return 0;
}
var mem = _malloc(length);
if (!mem) return 0;
GL.mappedBuffers[emscriptenWebGLGetBufferBinding(target)] = {
offset: offset,
length: length,
mem: mem,
access: access,
};
return mem;
},
glGetBufferPointerv__sig: 'viii',
glGetBufferPointerv__deps: ['$emscriptenWebGLGetBufferBinding'],
glGetBufferPointerv: function(target, pname, params) {
if (pname == 0x88BD/*GL_BUFFER_MAP_POINTER*/) {
var ptr = 0;
var mappedBuffer = GL.mappedBuffers[emscriptenWebGLGetBufferBinding(target)];
if (mappedBuffer) {
ptr = mappedBuffer.mem;
}
{{{ makeSetValue('params', '0', 'ptr', 'i32') }}};
} else {
GL.recordError(0x500/*GL_INVALID_ENUM*/);
err('GL_INVALID_ENUM in glGetBufferPointerv');
}
},
glFlushMappedBufferRange__sig: 'viii',
glFlushMappedBufferRange__deps: ['$emscriptenWebGLGetBufferBinding', '$emscriptenWebGLValidateMapBufferTarget'],
glFlushMappedBufferRange: function(target, offset, length) {
if (!emscriptenWebGLValidateMapBufferTarget(target)) {
GL.recordError(0x500/*GL_INVALID_ENUM*/);
err('GL_INVALID_ENUM in glFlushMappedBufferRange');
return;
}
var mapping = GL.mappedBuffers[emscriptenWebGLGetBufferBinding(target)];
if (!mapping) {
GL.recordError(0x502 /* GL_INVALID_OPERATION */);
Module.printError('buffer was never mapped in glFlushMappedBufferRange');
return;
}
if (!(mapping.access & 0x10)) {
GL.recordError(0x502 /* GL_INVALID_OPERATION */);
Module.printError('buffer was not mapped with GL_MAP_FLUSH_EXPLICIT_BIT in glFlushMappedBufferRange');
return;
}
if (offset < 0 || length < 0 || offset + length > mapping.length) {
GL.recordError(0x501 /* GL_INVALID_VALUE */);
Module.printError('invalid range in glFlushMappedBufferRange');
return;
}
GLctx.bufferSubData(
target,
mapping.offset,
HEAPU8.subarray(mapping.mem + offset, mapping.mem + offset + length));
},
glUnmapBuffer__sig: 'ii',
glUnmapBuffer__deps: ['$emscriptenWebGLGetBufferBinding', '$emscriptenWebGLValidateMapBufferTarget'],
glUnmapBuffer: function(target) {
if (!emscriptenWebGLValidateMapBufferTarget(target)) {
GL.recordError(0x500/*GL_INVALID_ENUM*/);
err('GL_INVALID_ENUM in glUnmapBuffer');
return 0;
}
var buffer = emscriptenWebGLGetBufferBinding(target);
var mapping = GL.mappedBuffers[buffer];
if (!mapping) {
GL.recordError(0x502 /* GL_INVALID_OPERATION */);
Module.printError('buffer was never mapped in glUnmapBuffer');
return 0;
}
GL.mappedBuffers[buffer] = null;
if (!(mapping.access & 0x10)) /* GL_MAP_FLUSH_EXPLICIT_BIT */
if (GL.currentContext.version >= 2) { // WebGL 2 provides new garbage-free entry points to call to WebGL. Use those always when possible.
GLctx.bufferSubData(target, mapping.offset, HEAPU8, mapping.mem, mapping.length);
} else {
GLctx.bufferSubData(target, mapping.offset, HEAPU8.subarray(mapping.mem, mapping.mem+mapping.length));
}
_free(mapping.mem);
return 1;
},
#endif
// signatures of simple pass-through functions, see later
glActiveTexture__sig: 'vi',
glCheckFramebufferStatus__sig: 'ii',
glRenderbufferStorage__sig: 'viiii',
glClearStencil__sig: 'vi',
glStencilFunc__sig: 'viii',
glLineWidth__sig: 'vi',
glBlendEquation__sig: 'vi',
glBlendEquationSeparate__sig: 'vii',
glVertexAttrib1f__sig: 'vii',
glVertexAttrib2f__sig: 'viii',
glVertexAttrib3f__sig: 'viiii',
glVertexAttrib4f__sig: 'viiiii',
glCullFace__sig: 'vi',
glBlendFunc__sig: 'vii',
glBlendFuncSeparate__sig: 'viiii',
glBlendColor__sig: 'vffff',
glPolygonOffset__sig: 'vii',
glStencilOp__sig: 'viii',
glStencilOpSeparate__sig: 'viiii',
glGenerateMipmap__sig: 'vi',
glHint__sig: 'vii',
glViewport__sig: 'viiii',
glDepthFunc__sig: 'vi',
glStencilMask__sig: 'vi',
glStencilMaskSeparate__sig: 'vii',
glClearDepthf__sig: 'vi',
glFinish__sig: 'v',
glFlush__sig: 'v',
glClearColor__sig: 'viiii',
glIsEnabled__sig: 'ii',
glFrontFace__sig: 'vi',
};
// Simple pass-through functions. Starred ones have return values. [X] ones have X in the C name but not in the JS name
var glFuncs = [[0, 'finish flush'],
[1, 'clearDepth clearDepth[f] depthFunc enable disable frontFace cullFace clear lineWidth clearStencil stencilMask checkFramebufferStatus* generateMipmap activeTexture blendEquation isEnabled*'],
[2, 'blendFunc blendEquationSeparate depthRange depthRange[f] stencilMaskSeparate hint polygonOffset vertexAttrib1f'],
[3, 'texParameteri texParameterf vertexAttrib2f stencilFunc stencilOp'],
[4, 'viewport clearColor scissor vertexAttrib3f renderbufferStorage blendFuncSeparate blendColor stencilFuncSeparate stencilOpSeparate'],
[5, 'vertexAttrib4f'],
[6, ''],
[7, ''],
[8, 'copyTexImage2D copyTexSubImage2D'],
[9, ''],
[10, '']];
function createGLPassthroughFunctions(lib, funcs) {
funcs.forEach(function(data) {
var num = data[0];
var names = data[1];
var args = range(num).map(function(i) { return 'x' + i }).join(', ');
var plainStub = '(function(' + args + ') { GLctx[\'NAME\'](' + args + ') })';
var returnStub = '(function(' + args + ') { return GLctx[\'NAME\'](' + args + ') })';
var sigEnd = range(num).map(function() { return 'i' }).join('');
names.split(' ').forEach(function(name) {
if (name.length == 0) return;
var stub = plainStub;
var sig;
if (name[name.length-1] == '*') {
name = name.substr(0, name.length-1);
stub = returnStub;
sig = 'i' + sigEnd;
} else {
sig = 'v' + sigEnd;
}
var cName = name;
if (name.indexOf('[') >= 0) {
cName = name.replace('[', '').replace(']', '');
name = cName.substr(0, cName.length-1);
}
var cName = 'gl' + cName[0].toUpperCase() + cName.substr(1);
assert(!(cName in lib), "Cannot reimplement the existing function " + cName);
lib[cName] = eval(stub.replace('NAME', name));
if (!lib[cName + '__sig']) lib[cName + '__sig'] = sig;
});
});
}
createGLPassthroughFunctions(LibraryGL, glFuncs);
autoAddDeps(LibraryGL, '$GL');
function copyLibEntry(lib, a, b) {
lib[a] = lib[b];
lib[a + '__postset'] = lib[b + '__postset'];
lib[a + '__proxy'] = lib[b + '__proxy'];
lib[a + '__sig'] = lib[b + '__sig'];
lib[a + '__asm'] = lib[b + '__asm'];
lib[a + '__deps'] = (lib[b + '__deps'] || []).slice(0);
}
function recordGLProcAddressGet(lib) {
// GL proc address retrieval - allow access through glX and emscripten_glX, to allow name collisions with user-implemented things having the same name (see gl.c)
keys(lib).forEach(function(x) {
if (isJsLibraryConfigIdentifier(x)) return;
if (x.substr(0, 2) != 'gl') return;
while (typeof lib[x] === 'string') {
// resolve aliases right here, simpler for fastcomp
copyLibEntry(lib, x, lib[x]);
}
var y = 'emscripten_' + x;
lib[x + '__deps'] = (lib[x + '__deps'] || []).map(function(dep) {
// prefix dependencies as well
if (typeof dep === 'string' && dep[0] == 'g' && dep[1] == 'l' && lib[dep]) {
var orig = dep;
dep = 'emscripten_' + dep;
var fixed = lib[x].toString().replace(new RegExp('_' + orig + '\\(', 'g'), '_' + dep + '(');
// `function` is 8 characters, add space and an explicit name after if there isn't one already
if (fixed.startsWith('function(') || fixed.startsWith('function (')) {
fixed = fixed.substr(0, 8) + ' _' + y + fixed.substr(8);
}
lib[x] = eval('(function() { return ' + fixed + ' })()');
}
return dep;
});
// copy it
copyLibEntry(lib, y, x);
});
}
recordGLProcAddressGet(LibraryGL);
// Final merge
mergeInto(LibraryManager.library, LibraryGL);