blob: 41db0b8143cf5d9eaf07035273f88b04222db926 [file] [log] [blame]
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This file is here so other GLES2 related files can have a common set of
// includes where appropriate.
#include <sstream>
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include <GLES2/gl2extchromium.h>
#include "gpu/command_buffer/common/gles2_cmd_format.h"
#include "gpu/command_buffer/common/gles2_cmd_utils.h"
namespace gpu {
namespace gles2 {
namespace gl_error_bit {
enum GLErrorBit {
kNoError = 0,
kInvalidEnum = (1 << 0),
kInvalidValue = (1 << 1),
kInvalidOperation = (1 << 2),
kOutOfMemory = (1 << 3),
kInvalidFrameBufferOperation = (1 << 4)
};
}
int GLES2Util::GLGetNumValuesReturned(int id) const {
switch (id) {
// -- glGetBooleanv, glGetFloatv, glGetIntergerv
case GL_ACTIVE_TEXTURE:
return 1;
case GL_ALIASED_LINE_WIDTH_RANGE:
return 2;
case GL_ALIASED_POINT_SIZE_RANGE:
return 2;
case GL_ALPHA_BITS:
return 1;
case GL_ARRAY_BUFFER_BINDING:
return 1;
case GL_BLEND:
return 1;
case GL_BLEND_COLOR:
return 4;
case GL_BLEND_DST_ALPHA:
return 1;
case GL_BLEND_DST_RGB:
return 1;
case GL_BLEND_EQUATION_ALPHA:
return 1;
case GL_BLEND_EQUATION_RGB:
return 1;
case GL_BLEND_SRC_ALPHA:
return 1;
case GL_BLEND_SRC_RGB:
return 1;
case GL_BLUE_BITS:
return 1;
case GL_COLOR_CLEAR_VALUE:
return 4;
case GL_COLOR_WRITEMASK:
return 4;
case GL_COMPRESSED_TEXTURE_FORMATS:
return num_compressed_texture_formats_;
case GL_CULL_FACE:
return 1;
case GL_CULL_FACE_MODE:
return 1;
case GL_CURRENT_PROGRAM:
return 1;
case GL_DEPTH_BITS:
return 1;
case GL_DEPTH_CLEAR_VALUE:
return 1;
case GL_DEPTH_FUNC:
return 1;
case GL_DEPTH_RANGE:
return 2;
case GL_DEPTH_TEST:
return 1;
case GL_DEPTH_WRITEMASK:
return 1;
case GL_DITHER:
return 1;
case GL_ELEMENT_ARRAY_BUFFER_BINDING:
return 1;
case GL_FRAMEBUFFER_BINDING:
return 1;
case GL_FRONT_FACE:
return 1;
case GL_GENERATE_MIPMAP_HINT:
return 1;
case GL_GREEN_BITS:
return 1;
case GL_IMPLEMENTATION_COLOR_READ_FORMAT:
return 1;
case GL_IMPLEMENTATION_COLOR_READ_TYPE:
return 1;
case GL_LINE_WIDTH:
return 1;
case GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS:
return 1;
case GL_MAX_CUBE_MAP_TEXTURE_SIZE:
return 1;
case GL_MAX_FRAGMENT_UNIFORM_VECTORS:
return 1;
case GL_MAX_RENDERBUFFER_SIZE:
return 1;
case GL_MAX_TEXTURE_IMAGE_UNITS:
return 1;
case GL_MAX_TEXTURE_SIZE:
return 1;
case GL_MAX_VARYING_VECTORS:
return 1;
case GL_MAX_VERTEX_ATTRIBS:
return 1;
case GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS:
return 1;
case GL_MAX_VERTEX_UNIFORM_VECTORS:
return 1;
case GL_MAX_VIEWPORT_DIMS:
return 2;
case GL_NUM_COMPRESSED_TEXTURE_FORMATS:
return 1;
case GL_NUM_SHADER_BINARY_FORMATS:
return 1;
case GL_PACK_ALIGNMENT:
return 1;
case GL_PACK_REVERSE_ROW_ORDER_ANGLE:
return 1;
case GL_POLYGON_OFFSET_FACTOR:
return 1;
case GL_POLYGON_OFFSET_FILL:
return 1;
case GL_POLYGON_OFFSET_UNITS:
return 1;
case GL_RED_BITS:
return 1;
case GL_RENDERBUFFER_BINDING:
return 1;
case GL_SAMPLE_BUFFERS:
return 1;
case GL_SAMPLE_COVERAGE_INVERT:
return 1;
case GL_SAMPLE_COVERAGE_VALUE:
return 1;
case GL_SAMPLES:
return 1;
case GL_SCISSOR_BOX:
return 4;
case GL_SCISSOR_TEST:
return 1;
case GL_SHADER_BINARY_FORMATS:
return num_shader_binary_formats_;
case GL_SHADER_COMPILER:
return 1;
case GL_STENCIL_BACK_FAIL:
return 1;
case GL_STENCIL_BACK_FUNC:
return 1;
case GL_STENCIL_BACK_PASS_DEPTH_FAIL:
return 1;
case GL_STENCIL_BACK_PASS_DEPTH_PASS:
return 1;
case GL_STENCIL_BACK_REF:
return 1;
case GL_STENCIL_BACK_VALUE_MASK:
return 1;
case GL_STENCIL_BACK_WRITEMASK:
return 1;
case GL_STENCIL_BITS:
return 1;
case GL_STENCIL_CLEAR_VALUE:
return 1;
case GL_STENCIL_FAIL:
return 1;
case GL_STENCIL_FUNC:
return 1;
case GL_STENCIL_PASS_DEPTH_FAIL:
return 1;
case GL_STENCIL_PASS_DEPTH_PASS:
return 1;
case GL_STENCIL_REF:
return 1;
case GL_STENCIL_TEST:
return 1;
case GL_STENCIL_VALUE_MASK:
return 1;
case GL_STENCIL_WRITEMASK:
return 1;
case GL_SUBPIXEL_BITS:
return 1;
case GL_TEXTURE_BINDING_2D:
return 1;
case GL_TEXTURE_BINDING_CUBE_MAP:
return 1;
case GL_TEXTURE_BINDING_EXTERNAL_OES:
return 1;
case GL_TEXTURE_BINDING_RECTANGLE_ARB:
return 1;
case GL_TEXTURE_IMMUTABLE_FORMAT_EXT:
return 1;
case GL_UNPACK_ALIGNMENT:
return 1;
case GL_VIEWPORT:
return 4;
// -- glGetBooleanv, glGetFloatv, glGetIntergerv with
// GL_CHROMIUM_framebuffer_multisample
case GL_MAX_SAMPLES_EXT:
return 1;
case GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT:
return 1;
// -- glGetBufferParameteriv
case GL_BUFFER_SIZE:
return 1;
case GL_BUFFER_USAGE:
return 1;
// -- glGetFramebufferAttachmentParameteriv
case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE:
return 1;
case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME:
return 1;
case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL:
return 1;
case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE:
return 1;
// -- glGetFramebufferAttachmentParameteriv with
// GL_EXT_multisampled_render_to_texture
case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_SAMPLES_EXT:
return 1;
// -- glGetFramebufferAttachmentParameteriv with
// GL_EXT_sRGB
case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING_EXT:
return 1;
// -- glGetProgramiv
case GL_DELETE_STATUS:
return 1;
case GL_LINK_STATUS:
return 1;
case GL_VALIDATE_STATUS:
return 1;
case GL_INFO_LOG_LENGTH:
return 1;
case GL_ATTACHED_SHADERS:
return 1;
case GL_ACTIVE_ATTRIBUTES:
return 1;
case GL_ACTIVE_ATTRIBUTE_MAX_LENGTH:
return 1;
case GL_ACTIVE_UNIFORMS:
return 1;
case GL_ACTIVE_UNIFORM_MAX_LENGTH:
return 1;
// -- glGetRenderbufferAttachmentParameteriv
case GL_RENDERBUFFER_WIDTH:
return 1;
case GL_RENDERBUFFER_HEIGHT:
return 1;
case GL_RENDERBUFFER_INTERNAL_FORMAT:
return 1;
case GL_RENDERBUFFER_RED_SIZE:
return 1;
case GL_RENDERBUFFER_GREEN_SIZE:
return 1;
case GL_RENDERBUFFER_BLUE_SIZE:
return 1;
case GL_RENDERBUFFER_ALPHA_SIZE:
return 1;
case GL_RENDERBUFFER_DEPTH_SIZE:
return 1;
case GL_RENDERBUFFER_STENCIL_SIZE:
return 1;
// -- glGetRenderbufferAttachmentParameteriv with
// GL_EXT_multisampled_render_to_texture
case GL_RENDERBUFFER_SAMPLES_EXT:
return 1;
// -- glGetShaderiv
case GL_SHADER_TYPE:
return 1;
// Already defined under glGetFramebufferAttachemntParameteriv.
// case GL_DELETE_STATUS:
// return 1;
case GL_COMPILE_STATUS:
return 1;
// Already defined under glGetFramebufferAttachemntParameteriv.
// case GL_INFO_LOG_LENGTH:
// return 1;
case GL_SHADER_SOURCE_LENGTH:
return 1;
case GL_TRANSLATED_SHADER_SOURCE_LENGTH_ANGLE:
return 1;
// -- glGetTexParameterfv, glGetTexParameteriv
case GL_TEXTURE_MAG_FILTER:
return 1;
case GL_TEXTURE_MIN_FILTER:
return 1;
case GL_TEXTURE_WRAP_S:
return 1;
case GL_TEXTURE_WRAP_T:
return 1;
case GL_TEXTURE_MAX_ANISOTROPY_EXT:
return 1;
// -- glGetVertexAttribfv, glGetVertexAttribiv
case GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING:
return 1;
case GL_VERTEX_ATTRIB_ARRAY_ENABLED:
return 1;
case GL_VERTEX_ATTRIB_ARRAY_SIZE:
return 1;
case GL_VERTEX_ATTRIB_ARRAY_STRIDE:
return 1;
case GL_VERTEX_ATTRIB_ARRAY_TYPE:
return 1;
case GL_VERTEX_ATTRIB_ARRAY_NORMALIZED:
return 1;
case GL_CURRENT_VERTEX_ATTRIB:
return 4;
// -- glHint with GL_OES_standard_derivatives
case GL_FRAGMENT_SHADER_DERIVATIVE_HINT_OES:
return 1;
// Chromium internal bind_generates_resource query
case GL_BIND_GENERATES_RESOURCE_CHROMIUM:
return 1;
// bad enum
default:
return 0;
}
}
namespace {
// Return the number of elements per group of a specified format.
int ElementsPerGroup(int format, int type) {
switch (type) {
case GL_UNSIGNED_SHORT_5_6_5:
case GL_UNSIGNED_SHORT_4_4_4_4:
case GL_UNSIGNED_SHORT_5_5_5_1:
case GL_UNSIGNED_INT_24_8_OES:
return 1;
default:
break;
}
switch (format) {
case GL_RGB:
case GL_SRGB_EXT:
return 3;
case GL_LUMINANCE_ALPHA:
return 2;
case GL_RGBA:
case GL_BGRA_EXT:
case GL_SRGB_ALPHA_EXT:
return 4;
case GL_ALPHA:
case GL_LUMINANCE:
case GL_DEPTH_COMPONENT:
case GL_DEPTH_COMPONENT24_OES:
case GL_DEPTH_COMPONENT32_OES:
case GL_DEPTH_COMPONENT16:
case GL_DEPTH24_STENCIL8_OES:
case GL_DEPTH_STENCIL_OES:
return 1;
default:
return 0;
}
}
// Return the number of bytes per element, based on the element type.
int BytesPerElement(int type) {
switch (type) {
case GL_FLOAT:
case GL_UNSIGNED_INT_24_8_OES:
case GL_UNSIGNED_INT:
return 4;
case GL_HALF_FLOAT_OES:
case GL_UNSIGNED_SHORT:
case GL_SHORT:
case GL_UNSIGNED_SHORT_5_6_5:
case GL_UNSIGNED_SHORT_4_4_4_4:
case GL_UNSIGNED_SHORT_5_5_5_1:
return 2;
case GL_UNSIGNED_BYTE:
case GL_BYTE:
return 1;
default:
return 0;
}
}
} // anonymous namespace
uint32 GLES2Util::ComputeImageGroupSize(int format, int type) {
return BytesPerElement(type) * ElementsPerGroup(format, type);
}
bool GLES2Util::ComputeImagePaddedRowSize(
int width, int format, int type, int unpack_alignment,
uint32* padded_row_size) {
uint32 bytes_per_group = ComputeImageGroupSize(format, type);
uint32 unpadded_row_size;
if (!SafeMultiplyUint32(width, bytes_per_group, &unpadded_row_size)) {
return false;
}
uint32 temp;
if (!SafeAddUint32(unpadded_row_size, unpack_alignment - 1, &temp)) {
return false;
}
*padded_row_size = (temp / unpack_alignment) * unpack_alignment;
return true;
}
// Returns the amount of data glTexImage2D or glTexSubImage2D will access.
bool GLES2Util::ComputeImageDataSizes(
int width, int height, int format, int type, int unpack_alignment,
uint32* size, uint32* ret_unpadded_row_size, uint32* ret_padded_row_size) {
uint32 bytes_per_group = ComputeImageGroupSize(format, type);
uint32 row_size;
if (!SafeMultiplyUint32(width, bytes_per_group, &row_size)) {
return false;
}
if (height > 1) {
uint32 temp;
if (!SafeAddUint32(row_size, unpack_alignment - 1, &temp)) {
return false;
}
uint32 padded_row_size = (temp / unpack_alignment) * unpack_alignment;
uint32 size_of_all_but_last_row;
if (!SafeMultiplyUint32((height - 1), padded_row_size,
&size_of_all_but_last_row)) {
return false;
}
if (!SafeAddUint32(size_of_all_but_last_row, row_size, size)) {
return false;
}
if (ret_padded_row_size) {
*ret_padded_row_size = padded_row_size;
}
} else {
if (!SafeMultiplyUint32(height, row_size, size)) {
return false;
}
if (ret_padded_row_size) {
*ret_padded_row_size = row_size;
}
}
if (ret_unpadded_row_size) {
*ret_unpadded_row_size = row_size;
}
return true;
}
size_t GLES2Util::RenderbufferBytesPerPixel(int format) {
switch (format) {
case GL_STENCIL_INDEX8:
return 1;
case GL_RGBA4:
case GL_RGB565:
case GL_RGB5_A1:
case GL_DEPTH_COMPONENT16:
return 2;
case GL_RGB:
case GL_RGBA:
case GL_DEPTH24_STENCIL8_OES:
case GL_RGB8_OES:
case GL_RGBA8_OES:
case GL_DEPTH_COMPONENT24_OES:
return 4;
default:
return 0;
}
}
uint32 GLES2Util::GetGLDataTypeSizeForUniforms(int type) {
switch (type) {
case GL_FLOAT:
return sizeof(GLfloat); // NOLINT
case GL_FLOAT_VEC2:
return sizeof(GLfloat) * 2; // NOLINT
case GL_FLOAT_VEC3:
return sizeof(GLfloat) * 3; // NOLINT
case GL_FLOAT_VEC4:
return sizeof(GLfloat) * 4; // NOLINT
case GL_INT:
return sizeof(GLint); // NOLINT
case GL_INT_VEC2:
return sizeof(GLint) * 2; // NOLINT
case GL_INT_VEC3:
return sizeof(GLint) * 3; // NOLINT
case GL_INT_VEC4:
return sizeof(GLint) * 4; // NOLINT
case GL_BOOL:
return sizeof(GLint); // NOLINT
case GL_BOOL_VEC2:
return sizeof(GLint) * 2; // NOLINT
case GL_BOOL_VEC3:
return sizeof(GLint) * 3; // NOLINT
case GL_BOOL_VEC4:
return sizeof(GLint) * 4; // NOLINT
case GL_FLOAT_MAT2:
return sizeof(GLfloat) * 2 * 2; // NOLINT
case GL_FLOAT_MAT3:
return sizeof(GLfloat) * 3 * 3; // NOLINT
case GL_FLOAT_MAT4:
return sizeof(GLfloat) * 4 * 4; // NOLINT
case GL_SAMPLER_2D:
return sizeof(GLint); // NOLINT
case GL_SAMPLER_2D_RECT_ARB:
return sizeof(GLint); // NOLINT
case GL_SAMPLER_CUBE:
return sizeof(GLint); // NOLINT
case GL_SAMPLER_EXTERNAL_OES:
return sizeof(GLint); // NOLINT
default:
return 0;
}
}
size_t GLES2Util::GetGLTypeSizeForTexturesAndBuffers(uint32 type) {
switch (type) {
case GL_BYTE:
return sizeof(GLbyte); // NOLINT
case GL_UNSIGNED_BYTE:
return sizeof(GLubyte); // NOLINT
case GL_SHORT:
return sizeof(GLshort); // NOLINT
case GL_UNSIGNED_SHORT:
return sizeof(GLushort); // NOLINT
case GL_INT:
return sizeof(GLint); // NOLINT
case GL_UNSIGNED_INT:
return sizeof(GLuint); // NOLINT
case GL_FLOAT:
return sizeof(GLfloat); // NOLINT
case GL_FIXED:
return sizeof(GLfixed); // NOLINT
default:
return 0;
}
}
uint32 GLES2Util::GLErrorToErrorBit(uint32 error) {
switch (error) {
case GL_INVALID_ENUM:
return gl_error_bit::kInvalidEnum;
case GL_INVALID_VALUE:
return gl_error_bit::kInvalidValue;
case GL_INVALID_OPERATION:
return gl_error_bit::kInvalidOperation;
case GL_OUT_OF_MEMORY:
return gl_error_bit::kOutOfMemory;
case GL_INVALID_FRAMEBUFFER_OPERATION:
return gl_error_bit::kInvalidFrameBufferOperation;
default:
NOTREACHED();
return gl_error_bit::kNoError;
}
}
uint32 GLES2Util::GLErrorBitToGLError(uint32 error_bit) {
switch (error_bit) {
case gl_error_bit::kInvalidEnum:
return GL_INVALID_ENUM;
case gl_error_bit::kInvalidValue:
return GL_INVALID_VALUE;
case gl_error_bit::kInvalidOperation:
return GL_INVALID_OPERATION;
case gl_error_bit::kOutOfMemory:
return GL_OUT_OF_MEMORY;
case gl_error_bit::kInvalidFrameBufferOperation:
return GL_INVALID_FRAMEBUFFER_OPERATION;
default:
NOTREACHED();
return GL_NO_ERROR;
}
}
uint32 GLES2Util::IndexToGLFaceTarget(int index) {
static uint32 faces[] = {
GL_TEXTURE_CUBE_MAP_POSITIVE_X,
GL_TEXTURE_CUBE_MAP_NEGATIVE_X,
GL_TEXTURE_CUBE_MAP_POSITIVE_Y,
GL_TEXTURE_CUBE_MAP_NEGATIVE_Y,
GL_TEXTURE_CUBE_MAP_POSITIVE_Z,
GL_TEXTURE_CUBE_MAP_NEGATIVE_Z,
};
return faces[index];
}
size_t GLES2Util::GLTargetToFaceIndex(uint32 target) {
switch (target) {
case GL_TEXTURE_2D:
case GL_TEXTURE_EXTERNAL_OES:
case GL_TEXTURE_RECTANGLE_ARB:
return 0;
case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
return 0;
case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
return 1;
case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
return 2;
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
return 3;
case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
return 4;
case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
return 5;
default:
NOTREACHED();
return 0;
}
}
uint32 GLES2Util::GetPreferredGLReadPixelsFormat(uint32 internal_format) {
switch (internal_format) {
case GL_RGB16F_EXT:
case GL_RGB32F_EXT:
return GL_RGB;
case GL_RGBA16F_EXT:
case GL_RGBA32F_EXT:
return GL_RGBA;
default:
return GL_RGBA;
}
}
uint32 GLES2Util::GetPreferredGLReadPixelsType(
uint32 internal_format, uint32 texture_type) {
switch (internal_format) {
case GL_RGBA32F_EXT:
case GL_RGB32F_EXT:
return GL_FLOAT;
case GL_RGBA16F_EXT:
case GL_RGB16F_EXT:
return GL_HALF_FLOAT_OES;
case GL_RGBA:
case GL_RGB:
// Unsized internal format, check the type
switch (texture_type) {
case GL_FLOAT:
case GL_HALF_FLOAT_OES:
return GL_FLOAT;
default:
return GL_UNSIGNED_BYTE;
}
default:
return GL_UNSIGNED_BYTE;
}
}
uint32 GLES2Util::GetChannelsForFormat(int format) {
switch (format) {
case GL_ALPHA:
case GL_ALPHA16F_EXT:
case GL_ALPHA32F_EXT:
return kAlpha;
case GL_LUMINANCE:
return kRGB;
case GL_LUMINANCE_ALPHA:
return kRGBA;
case GL_RGB:
case GL_RGB8_OES:
case GL_RGB565:
case GL_RGB16F_EXT:
case GL_RGB32F_EXT:
case GL_SRGB_EXT:
return kRGB;
case GL_BGRA_EXT:
case GL_BGRA8_EXT:
case GL_RGBA16F_EXT:
case GL_RGBA32F_EXT:
case GL_RGBA:
case GL_RGBA8_OES:
case GL_RGBA4:
case GL_RGB5_A1:
case GL_SRGB_ALPHA_EXT:
case GL_SRGB8_ALPHA8_EXT:
return kRGBA;
case GL_DEPTH_COMPONENT32_OES:
case GL_DEPTH_COMPONENT24_OES:
case GL_DEPTH_COMPONENT16:
case GL_DEPTH_COMPONENT:
return kDepth;
case GL_STENCIL_INDEX8:
return kStencil;
case GL_DEPTH_STENCIL_OES:
case GL_DEPTH24_STENCIL8_OES:
return kDepth | kStencil;
default:
return 0x0000;
}
}
uint32 GLES2Util::GetChannelsNeededForAttachmentType(
int type, uint32 max_color_attachments) {
switch (type) {
case GL_DEPTH_ATTACHMENT:
return kDepth;
case GL_STENCIL_ATTACHMENT:
return kStencil;
default:
if (type >= GL_COLOR_ATTACHMENT0 &&
type < static_cast<int>(
GL_COLOR_ATTACHMENT0 + max_color_attachments)) {
return kRGBA;
}
return 0x0000;
}
}
std::string GLES2Util::GetStringEnum(uint32 value) {
const EnumToString* entry = enum_to_string_table_;
const EnumToString* end = entry + enum_to_string_table_len_;
for (;entry < end; ++entry) {
if (value == entry->value) {
return entry->name;
}
}
std::stringstream ss;
ss.fill('0');
ss.width(value < 0x10000 ? 4 : 8);
ss << std::hex << value;
return "0x" + ss.str();
}
std::string GLES2Util::GetStringError(uint32 value) {
static EnumToString string_table[] = {
{ GL_NONE, "GL_NONE" },
};
return GLES2Util::GetQualifiedEnumString(
string_table, arraysize(string_table), value);
}
std::string GLES2Util::GetStringBool(uint32 value) {
return value ? "GL_TRUE" : "GL_FALSE";
}
std::string GLES2Util::GetQualifiedEnumString(
const EnumToString* table, size_t count, uint32 value) {
for (const EnumToString* end = table + count; table < end; ++table) {
if (table->value == value) {
return table->name;
}
}
return GetStringEnum(value);
}
bool GLES2Util::ParseUniformName(
const std::string& name,
size_t* array_pos,
int* element_index,
bool* getting_array) {
bool getting_array_location = false;
size_t open_pos = std::string::npos;
int index = 0;
if (name[name.size() - 1] == ']') {
if (name.size() < 3) {
return false;
}
open_pos = name.find_last_of('[');
if (open_pos == std::string::npos ||
open_pos >= name.size() - 2) {
return false;
}
size_t last = name.size() - 1;
for (size_t pos = open_pos + 1; pos < last; ++pos) {
int8 digit = name[pos] - '0';
if (digit < 0 || digit > 9) {
return false;
}
index = index * 10 + digit;
}
getting_array_location = true;
}
*getting_array = getting_array_location;
*element_index = index;
*array_pos = open_pos;
return true;
}
namespace {
// WebGraphicsContext3DCommandBufferImpl configuration attributes. Those in
// the 16-bit range are the same as used by EGL. Those outside the 16-bit range
// are unique to Chromium. Attributes are matched using a closest fit algorithm.
// From <EGL/egl.h>.
const int32 kAlphaSize = 0x3021; // EGL_ALPHA_SIZE
const int32 kBlueSize = 0x3022; // EGL_BLUE_SIZE
const int32 kGreenSize = 0x3023; // EGL_GREEN_SIZE
const int32 kRedSize = 0x3024; // EGL_RED_SIZE
const int32 kDepthSize = 0x3025; // EGL_DEPTH_SIZE
const int32 kStencilSize = 0x3026; // EGL_STENCIL_SIZE
const int32 kSamples = 0x3031; // EGL_SAMPLES
const int32 kSampleBuffers = 0x3032; // EGL_SAMPLE_BUFFERS
const int32 kNone = 0x3038; // EGL_NONE
const int32 kSwapBehavior = 0x3093; // EGL_SWAP_BEHAVIOR
const int32 kBufferPreserved = 0x3094; // EGL_BUFFER_PRESERVED
const int32 kBufferDestroyed = 0x3095; // EGL_BUFFER_DESTROYED
// Chromium only.
const int32 kBindGeneratesResource = 0x10000;
const int32 kFailIfMajorPerfCaveat = 0x10001;
const int32 kLoseContextWhenOutOfMemory = 0x10002;
} // namespace
ContextCreationAttribHelper::ContextCreationAttribHelper()
: alpha_size(-1),
blue_size(-1),
green_size(-1),
red_size(-1),
depth_size(-1),
stencil_size(-1),
samples(-1),
sample_buffers(-1),
buffer_preserved(true),
bind_generates_resource(true),
fail_if_major_perf_caveat(false),
lose_context_when_out_of_memory(false) {}
void ContextCreationAttribHelper::Serialize(std::vector<int32>* attribs) const {
if (alpha_size != -1) {
attribs->push_back(kAlphaSize);
attribs->push_back(alpha_size);
}
if (blue_size != -1) {
attribs->push_back(kBlueSize);
attribs->push_back(blue_size);
}
if (green_size != -1) {
attribs->push_back(kGreenSize);
attribs->push_back(green_size);
}
if (red_size != -1) {
attribs->push_back(kRedSize);
attribs->push_back(red_size);
}
if (depth_size != -1) {
attribs->push_back(kDepthSize);
attribs->push_back(depth_size);
}
if (stencil_size != -1) {
attribs->push_back(kStencilSize);
attribs->push_back(stencil_size);
}
if (samples != -1) {
attribs->push_back(kSamples);
attribs->push_back(samples);
}
if (sample_buffers != -1) {
attribs->push_back(kSampleBuffers);
attribs->push_back(sample_buffers);
}
attribs->push_back(kSwapBehavior);
attribs->push_back(buffer_preserved ? kBufferPreserved : kBufferDestroyed);
attribs->push_back(kBindGeneratesResource);
attribs->push_back(bind_generates_resource ? 1 : 0);
attribs->push_back(kFailIfMajorPerfCaveat);
attribs->push_back(fail_if_major_perf_caveat ? 1 : 0);
attribs->push_back(kLoseContextWhenOutOfMemory);
attribs->push_back(lose_context_when_out_of_memory ? 1 : 0);
attribs->push_back(kNone);
}
bool ContextCreationAttribHelper::Parse(const std::vector<int32>& attribs) {
for (size_t i = 0; i < attribs.size(); i += 2) {
const int32 attrib = attribs[i];
if (i + 1 >= attribs.size()) {
if (attrib == kNone) {
return true;
}
DLOG(ERROR) << "Missing value after context creation attribute: "
<< attrib;
return false;
}
const int32 value = attribs[i+1];
switch (attrib) {
case kAlphaSize:
alpha_size = value;
break;
case kBlueSize:
blue_size = value;
break;
case kGreenSize:
green_size = value;
break;
case kRedSize:
red_size = value;
break;
case kDepthSize:
depth_size = value;
break;
case kStencilSize:
stencil_size = value;
break;
case kSamples:
samples = value;
break;
case kSampleBuffers:
sample_buffers = value;
break;
case kSwapBehavior:
buffer_preserved = value == kBufferPreserved;
break;
case kBindGeneratesResource:
bind_generates_resource = value != 0;
break;
case kFailIfMajorPerfCaveat:
fail_if_major_perf_caveat = value != 0;
break;
case kLoseContextWhenOutOfMemory:
lose_context_when_out_of_memory = value != 0;
break;
case kNone:
// Terminate list, even if more attributes.
return true;
default:
DLOG(ERROR) << "Invalid context creation attribute: " << attrib;
return false;
}
}
return true;
}
#include "gpu/command_buffer/common/gles2_cmd_utils_implementation_autogen.h"
} // namespace gles2
} // namespace gpu