| // |
| // Copyright (c) 2013-2014 The ANGLE Project Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| // |
| |
| // validationES.h: Validation functions for generic OpenGL ES entry point parameters |
| |
| #include "libGLESv2/validationES.h" |
| #include "libGLESv2/validationES2.h" |
| #include "libGLESv2/validationES3.h" |
| #include "libGLESv2/Context.h" |
| #include "libGLESv2/Texture.h" |
| #include "libGLESv2/Framebuffer.h" |
| #include "libGLESv2/FramebufferAttachment.h" |
| #include "libGLESv2/formatutils.h" |
| #include "libGLESv2/main.h" |
| #include "libGLESv2/Query.h" |
| #include "libGLESv2/ProgramBinary.h" |
| #include "libGLESv2/TransformFeedback.h" |
| #include "libGLESv2/VertexArray.h" |
| #include "libGLESv2/renderer/BufferImpl.h" |
| |
| #include "common/mathutil.h" |
| #include "common/utilities.h" |
| |
| namespace gl |
| { |
| |
| bool ValidCap(const Context *context, GLenum cap) |
| { |
| switch (cap) |
| { |
| case GL_CULL_FACE: |
| case GL_POLYGON_OFFSET_FILL: |
| case GL_SAMPLE_ALPHA_TO_COVERAGE: |
| case GL_SAMPLE_COVERAGE: |
| case GL_SCISSOR_TEST: |
| case GL_STENCIL_TEST: |
| case GL_DEPTH_TEST: |
| case GL_BLEND: |
| case GL_DITHER: |
| return true; |
| case GL_PRIMITIVE_RESTART_FIXED_INDEX: |
| case GL_RASTERIZER_DISCARD: |
| return (context->getClientVersion() >= 3); |
| default: |
| return false; |
| } |
| } |
| |
| bool ValidTextureTarget(const Context *context, GLenum target) |
| { |
| switch (target) |
| { |
| case GL_TEXTURE_2D: |
| case GL_TEXTURE_CUBE_MAP: |
| return true; |
| |
| case GL_TEXTURE_3D: |
| case GL_TEXTURE_2D_ARRAY: |
| return (context->getClientVersion() >= 3); |
| |
| default: |
| return false; |
| } |
| } |
| |
| // This function differs from ValidTextureTarget in that the target must be |
| // usable as the destination of a 2D operation-- so a cube face is valid, but |
| // GL_TEXTURE_CUBE_MAP is not. |
| // Note: duplicate of IsInternalTextureTarget |
| bool ValidTexture2DDestinationTarget(const Context *context, GLenum target) |
| { |
| switch (target) |
| { |
| case GL_TEXTURE_2D: |
| case GL_TEXTURE_CUBE_MAP_POSITIVE_X: |
| case GL_TEXTURE_CUBE_MAP_NEGATIVE_X: |
| case GL_TEXTURE_CUBE_MAP_POSITIVE_Y: |
| case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: |
| case GL_TEXTURE_CUBE_MAP_POSITIVE_Z: |
| case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: |
| return true; |
| case GL_TEXTURE_2D_ARRAY: |
| case GL_TEXTURE_3D: |
| return (context->getClientVersion() >= 3); |
| default: |
| return false; |
| } |
| } |
| |
| bool ValidFramebufferTarget(GLenum target) |
| { |
| META_ASSERT(GL_DRAW_FRAMEBUFFER_ANGLE == GL_DRAW_FRAMEBUFFER && GL_READ_FRAMEBUFFER_ANGLE == GL_READ_FRAMEBUFFER); |
| |
| switch (target) |
| { |
| case GL_FRAMEBUFFER: return true; |
| case GL_READ_FRAMEBUFFER: return true; |
| case GL_DRAW_FRAMEBUFFER: return true; |
| default: return false; |
| } |
| } |
| |
| bool ValidBufferTarget(const Context *context, GLenum target) |
| { |
| switch (target) |
| { |
| case GL_ARRAY_BUFFER: |
| case GL_ELEMENT_ARRAY_BUFFER: |
| return true; |
| |
| case GL_PIXEL_PACK_BUFFER: |
| case GL_PIXEL_UNPACK_BUFFER: |
| return context->getExtensions().pixelBufferObject; |
| |
| case GL_COPY_READ_BUFFER: |
| case GL_COPY_WRITE_BUFFER: |
| case GL_TRANSFORM_FEEDBACK_BUFFER: |
| case GL_UNIFORM_BUFFER: |
| return (context->getClientVersion() >= 3); |
| |
| default: |
| return false; |
| } |
| } |
| |
| bool ValidBufferParameter(const Context *context, GLenum pname) |
| { |
| switch (pname) |
| { |
| case GL_BUFFER_USAGE: |
| case GL_BUFFER_SIZE: |
| return true; |
| |
| // GL_BUFFER_MAP_POINTER is a special case, and may only be |
| // queried with GetBufferPointerv |
| case GL_BUFFER_ACCESS_FLAGS: |
| case GL_BUFFER_MAPPED: |
| case GL_BUFFER_MAP_OFFSET: |
| case GL_BUFFER_MAP_LENGTH: |
| return (context->getClientVersion() >= 3); |
| |
| default: |
| return false; |
| } |
| } |
| |
| bool ValidMipLevel(const Context *context, GLenum target, GLint level) |
| { |
| size_t maxDimension = 0; |
| switch (target) |
| { |
| case GL_TEXTURE_2D: maxDimension = context->getCaps().max2DTextureSize; break; |
| case GL_TEXTURE_CUBE_MAP: |
| case GL_TEXTURE_CUBE_MAP_POSITIVE_X: |
| case GL_TEXTURE_CUBE_MAP_NEGATIVE_X: |
| case GL_TEXTURE_CUBE_MAP_POSITIVE_Y: |
| case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: |
| case GL_TEXTURE_CUBE_MAP_POSITIVE_Z: |
| case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: maxDimension = context->getCaps().maxCubeMapTextureSize; break; |
| case GL_TEXTURE_3D: maxDimension = context->getCaps().max3DTextureSize; break; |
| case GL_TEXTURE_2D_ARRAY: maxDimension = context->getCaps().max2DTextureSize; break; |
| default: UNREACHABLE(); |
| } |
| |
| return level <= gl::log2(maxDimension); |
| } |
| |
| bool ValidImageSize(const Context *context, GLenum target, GLint level, |
| GLsizei width, GLsizei height, GLsizei depth) |
| { |
| if (level < 0 || width < 0 || height < 0 || depth < 0) |
| { |
| return false; |
| } |
| |
| if (!context->getExtensions().textureNPOT && |
| (level != 0 && (!gl::isPow2(width) || !gl::isPow2(height) || !gl::isPow2(depth)))) |
| { |
| return false; |
| } |
| |
| if (!ValidMipLevel(context, target, level)) |
| { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool ValidCompressedImageSize(const Context *context, GLenum internalFormat, GLsizei width, GLsizei height) |
| { |
| const gl::InternalFormat &formatInfo = gl::GetInternalFormatInfo(internalFormat); |
| if (!formatInfo.compressed) |
| { |
| return false; |
| } |
| |
| if (width < 0 || (static_cast<GLuint>(width) > formatInfo.compressedBlockWidth && width % formatInfo.compressedBlockWidth != 0) || |
| height < 0 || (static_cast<GLuint>(height) > formatInfo.compressedBlockHeight && height % formatInfo.compressedBlockHeight != 0)) |
| { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool ValidQueryType(const Context *context, GLenum queryType) |
| { |
| META_ASSERT(GL_ANY_SAMPLES_PASSED == GL_ANY_SAMPLES_PASSED_EXT); |
| META_ASSERT(GL_ANY_SAMPLES_PASSED_CONSERVATIVE == GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT); |
| |
| switch (queryType) |
| { |
| case GL_ANY_SAMPLES_PASSED: |
| case GL_ANY_SAMPLES_PASSED_CONSERVATIVE: |
| return true; |
| case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN: |
| return (context->getClientVersion() >= 3); |
| default: |
| return false; |
| } |
| } |
| |
| bool ValidProgram(Context *context, GLuint id) |
| { |
| // ES3 spec (section 2.11.1) -- "Commands that accept shader or program object names will generate the |
| // error INVALID_VALUE if the provided name is not the name of either a shader or program object and |
| // INVALID_OPERATION if the provided name identifies an object that is not the expected type." |
| |
| if (context->getProgram(id) != NULL) |
| { |
| return true; |
| } |
| else if (context->getShader(id) != NULL) |
| { |
| // ID is the wrong type |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| else |
| { |
| // No shader/program object has this ID |
| context->recordError(Error(GL_INVALID_VALUE)); |
| return false; |
| } |
| } |
| |
| bool ValidateAttachmentTarget(gl::Context *context, GLenum attachment) |
| { |
| if (attachment >= GL_COLOR_ATTACHMENT0_EXT && attachment <= GL_COLOR_ATTACHMENT15_EXT) |
| { |
| const unsigned int colorAttachment = (attachment - GL_COLOR_ATTACHMENT0_EXT); |
| |
| if (colorAttachment >= context->getCaps().maxColorAttachments) |
| { |
| context->recordError(Error(GL_INVALID_VALUE)); |
| return false; |
| } |
| } |
| else |
| { |
| switch (attachment) |
| { |
| case GL_DEPTH_ATTACHMENT: |
| case GL_STENCIL_ATTACHMENT: |
| break; |
| |
| case GL_DEPTH_STENCIL_ATTACHMENT: |
| if (context->getClientVersion() < 3) |
| { |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| break; |
| |
| default: |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| bool ValidateRenderbufferStorageParameters(gl::Context *context, GLenum target, GLsizei samples, |
| GLenum internalformat, GLsizei width, GLsizei height, |
| bool angleExtension) |
| { |
| switch (target) |
| { |
| case GL_RENDERBUFFER: |
| break; |
| default: |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| |
| if (width < 0 || height < 0 || samples < 0) |
| { |
| context->recordError(Error(GL_INVALID_VALUE)); |
| return false; |
| } |
| |
| const gl::InternalFormat &formatInfo = gl::GetInternalFormatInfo(internalformat); |
| if (!formatInfo.textureSupport(context->getClientVersion(), context->getExtensions())) |
| { |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| |
| // ANGLE_framebuffer_multisample does not explicitly state that the internal format must be |
| // sized but it does state that the format must be in the ES2.0 spec table 4.5 which contains |
| // only sized internal formats. The ES3 spec (section 4.4.2) does, however, state that the |
| // internal format must be sized and not an integer format if samples is greater than zero. |
| if (formatInfo.pixelBytes == 0) |
| { |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| |
| if ((formatInfo.componentType == GL_UNSIGNED_INT || formatInfo.componentType == GL_INT) && samples > 0) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| const TextureCaps &formatCaps = context->getTextureCaps().get(internalformat); |
| if (!formatCaps.renderable) |
| { |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| |
| if (static_cast<GLuint>(std::max(width, height)) > context->getCaps().maxRenderbufferSize) |
| { |
| context->recordError(Error(GL_INVALID_VALUE)); |
| return false; |
| } |
| |
| // ANGLE_framebuffer_multisample states that the value of samples must be less than or equal |
| // to MAX_SAMPLES_ANGLE (Context::getMaxSupportedSamples) while the ES3.0 spec (section 4.4.2) |
| // states that samples must be less than or equal to the maximum samples for the specified |
| // internal format. |
| if (angleExtension) |
| { |
| ASSERT(context->getExtensions().framebufferMultisample); |
| if (static_cast<GLuint>(samples) > context->getExtensions().maxSamples) |
| { |
| context->recordError(Error(GL_INVALID_VALUE)); |
| return false; |
| } |
| |
| // Check if this specific format supports enough samples |
| if (static_cast<GLuint>(samples) > formatCaps.getMaxSamples()) |
| { |
| context->recordError(Error(GL_OUT_OF_MEMORY)); |
| return false; |
| } |
| } |
| else |
| { |
| if (static_cast<GLuint>(samples) > formatCaps.getMaxSamples()) |
| { |
| context->recordError(Error(GL_INVALID_VALUE)); |
| return false; |
| } |
| } |
| |
| GLuint handle = context->getState().getRenderbufferId(); |
| if (handle == 0) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool ValidateFramebufferRenderbufferParameters(gl::Context *context, GLenum target, GLenum attachment, |
| GLenum renderbuffertarget, GLuint renderbuffer) |
| { |
| if (!ValidFramebufferTarget(target)) |
| { |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| |
| gl::Framebuffer *framebuffer = context->getState().getTargetFramebuffer(target); |
| GLuint framebufferHandle = context->getState().getTargetFramebuffer(target)->id(); |
| |
| if (!framebuffer || (framebufferHandle == 0 && renderbuffer != 0)) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| if (!ValidateAttachmentTarget(context, attachment)) |
| { |
| return false; |
| } |
| |
| // [OpenGL ES 2.0.25] Section 4.4.3 page 112 |
| // [OpenGL ES 3.0.2] Section 4.4.2 page 201 |
| // 'renderbuffer' must be either zero or the name of an existing renderbuffer object of |
| // type 'renderbuffertarget', otherwise an INVALID_OPERATION error is generated. |
| if (renderbuffer != 0) |
| { |
| if (!context->getRenderbuffer(renderbuffer)) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| static bool IsPartialBlit(gl::Context *context, gl::FramebufferAttachment *readBuffer, gl::FramebufferAttachment *writeBuffer, |
| GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, |
| GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1) |
| { |
| if (srcX0 != 0 || srcY0 != 0 || dstX0 != 0 || dstY0 != 0 || |
| dstX1 != writeBuffer->getWidth() || dstY1 != writeBuffer->getHeight() || |
| srcX1 != readBuffer->getWidth() || srcY1 != readBuffer->getHeight()) |
| { |
| return true; |
| } |
| else if (context->getState().isScissorTestEnabled()) |
| { |
| const Rectangle &scissor = context->getState().getScissor(); |
| |
| return scissor.x > 0 || scissor.y > 0 || |
| scissor.width < writeBuffer->getWidth() || |
| scissor.height < writeBuffer->getHeight(); |
| } |
| else |
| { |
| return false; |
| } |
| } |
| |
| bool ValidateBlitFramebufferParameters(gl::Context *context, GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, |
| GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, |
| GLenum filter, bool fromAngleExtension) |
| { |
| switch (filter) |
| { |
| case GL_NEAREST: |
| break; |
| case GL_LINEAR: |
| if (fromAngleExtension) |
| { |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| break; |
| default: |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| |
| if ((mask & ~(GL_COLOR_BUFFER_BIT | GL_STENCIL_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)) != 0) |
| { |
| context->recordError(Error(GL_INVALID_VALUE)); |
| return false; |
| } |
| |
| if (mask == 0) |
| { |
| // ES3.0 spec, section 4.3.2 specifies that a mask of zero is valid and no |
| // buffers are copied. |
| return false; |
| } |
| |
| if (fromAngleExtension && (srcX1 - srcX0 != dstX1 - dstX0 || srcY1 - srcY0 != dstY1 - dstY0)) |
| { |
| ERR("Scaling and flipping in BlitFramebufferANGLE not supported by this implementation."); |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| // ES3.0 spec, section 4.3.2 states that linear filtering is only available for the |
| // color buffer, leaving only nearest being unfiltered from above |
| if ((mask & ~GL_COLOR_BUFFER_BIT) != 0 && filter != GL_NEAREST) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| if (context->getState().getReadFramebuffer()->id() == context->getState().getDrawFramebuffer()->id()) |
| { |
| if (fromAngleExtension) |
| { |
| ERR("Blits with the same source and destination framebuffer are not supported by this " |
| "implementation."); |
| } |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| gl::Framebuffer *readFramebuffer = context->getState().getReadFramebuffer(); |
| gl::Framebuffer *drawFramebuffer = context->getState().getDrawFramebuffer(); |
| if (!readFramebuffer || readFramebuffer->completeness() != GL_FRAMEBUFFER_COMPLETE || |
| !drawFramebuffer || drawFramebuffer->completeness() != GL_FRAMEBUFFER_COMPLETE) |
| { |
| context->recordError(Error(GL_INVALID_FRAMEBUFFER_OPERATION)); |
| return false; |
| } |
| |
| if (drawFramebuffer->getSamples() != 0) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| bool sameBounds = srcX0 == dstX0 && srcY0 == dstY0 && srcX1 == dstX1 && srcY1 == dstY1; |
| |
| if (mask & GL_COLOR_BUFFER_BIT) |
| { |
| gl::FramebufferAttachment *readColorBuffer = readFramebuffer->getReadColorbuffer(); |
| gl::FramebufferAttachment *drawColorBuffer = drawFramebuffer->getFirstColorbuffer(); |
| |
| if (readColorBuffer && drawColorBuffer) |
| { |
| GLenum readInternalFormat = readColorBuffer->getActualFormat(); |
| const InternalFormat &readFormatInfo = GetInternalFormatInfo(readInternalFormat); |
| |
| for (unsigned int i = 0; i < gl::IMPLEMENTATION_MAX_DRAW_BUFFERS; i++) |
| { |
| if (drawFramebuffer->isEnabledColorAttachment(i)) |
| { |
| GLenum drawInternalFormat = drawFramebuffer->getColorbuffer(i)->getActualFormat(); |
| const InternalFormat &drawFormatInfo = GetInternalFormatInfo(drawInternalFormat); |
| |
| // The GL ES 3.0.2 spec (pg 193) states that: |
| // 1) If the read buffer is fixed point format, the draw buffer must be as well |
| // 2) If the read buffer is an unsigned integer format, the draw buffer must be as well |
| // 3) If the read buffer is a signed integer format, the draw buffer must be as well |
| if ( (readFormatInfo.componentType == GL_UNSIGNED_NORMALIZED || readFormatInfo.componentType == GL_SIGNED_NORMALIZED) && |
| !(drawFormatInfo.componentType == GL_UNSIGNED_NORMALIZED || drawFormatInfo.componentType == GL_SIGNED_NORMALIZED)) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| if (readFormatInfo.componentType == GL_UNSIGNED_INT && drawFormatInfo.componentType != GL_UNSIGNED_INT) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| if (readFormatInfo.componentType == GL_INT && drawFormatInfo.componentType != GL_INT) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| if (readColorBuffer->getSamples() > 0 && (readInternalFormat != drawInternalFormat || !sameBounds)) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| } |
| } |
| |
| if ((readFormatInfo.componentType == GL_INT || readFormatInfo.componentType == GL_UNSIGNED_INT) && filter == GL_LINEAR) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| if (fromAngleExtension) |
| { |
| const GLenum readColorbufferType = readFramebuffer->getReadColorbufferType(); |
| if (readColorbufferType != GL_TEXTURE_2D && readColorbufferType != GL_RENDERBUFFER) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| for (unsigned int colorAttachment = 0; colorAttachment < gl::IMPLEMENTATION_MAX_DRAW_BUFFERS; colorAttachment++) |
| { |
| if (drawFramebuffer->isEnabledColorAttachment(colorAttachment)) |
| { |
| FramebufferAttachment *attachment = drawFramebuffer->getColorbuffer(colorAttachment); |
| ASSERT(attachment); |
| |
| if (attachment->type() != GL_TEXTURE_2D && attachment->type() != GL_RENDERBUFFER) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| if (attachment->getActualFormat() != readColorBuffer->getActualFormat()) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| } |
| } |
| if (readFramebuffer->getSamples() != 0 && IsPartialBlit(context, readColorBuffer, drawColorBuffer, |
| srcX0, srcY0, srcX1, srcY1, |
| dstX0, dstY0, dstX1, dstY1)) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| } |
| } |
| } |
| |
| if (mask & GL_DEPTH_BUFFER_BIT) |
| { |
| gl::FramebufferAttachment *readDepthBuffer = readFramebuffer->getDepthbuffer(); |
| gl::FramebufferAttachment *drawDepthBuffer = drawFramebuffer->getDepthbuffer(); |
| |
| if (readDepthBuffer && drawDepthBuffer) |
| { |
| if (readDepthBuffer->getActualFormat() != drawDepthBuffer->getActualFormat()) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| if (readDepthBuffer->getSamples() > 0 && !sameBounds) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| if (fromAngleExtension) |
| { |
| if (IsPartialBlit(context, readDepthBuffer, drawDepthBuffer, |
| srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1)) |
| { |
| ERR("Only whole-buffer depth and stencil blits are supported by this implementation."); |
| context->recordError(Error(GL_INVALID_OPERATION)); // only whole-buffer copies are permitted |
| return false; |
| } |
| |
| if (readDepthBuffer->getSamples() != 0 || drawDepthBuffer->getSamples() != 0) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| } |
| } |
| } |
| |
| if (mask & GL_STENCIL_BUFFER_BIT) |
| { |
| gl::FramebufferAttachment *readStencilBuffer = readFramebuffer->getStencilbuffer(); |
| gl::FramebufferAttachment *drawStencilBuffer = drawFramebuffer->getStencilbuffer(); |
| |
| if (readStencilBuffer && drawStencilBuffer) |
| { |
| if (readStencilBuffer->getActualFormat() != drawStencilBuffer->getActualFormat()) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| if (readStencilBuffer->getSamples() > 0 && !sameBounds) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| if (fromAngleExtension) |
| { |
| if (IsPartialBlit(context, readStencilBuffer, drawStencilBuffer, |
| srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1)) |
| { |
| ERR("Only whole-buffer depth and stencil blits are supported by this implementation."); |
| context->recordError(Error(GL_INVALID_OPERATION)); // only whole-buffer copies are permitted |
| return false; |
| } |
| |
| if (readStencilBuffer->getSamples() != 0 || drawStencilBuffer->getSamples() != 0) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| } |
| } |
| } |
| |
| return true; |
| } |
| |
| bool ValidateGetVertexAttribParameters(Context *context, GLenum pname) |
| { |
| switch (pname) |
| { |
| case GL_VERTEX_ATTRIB_ARRAY_ENABLED: |
| case GL_VERTEX_ATTRIB_ARRAY_SIZE: |
| case GL_VERTEX_ATTRIB_ARRAY_STRIDE: |
| case GL_VERTEX_ATTRIB_ARRAY_TYPE: |
| case GL_VERTEX_ATTRIB_ARRAY_NORMALIZED: |
| case GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING: |
| case GL_CURRENT_VERTEX_ATTRIB: |
| return true; |
| |
| case GL_VERTEX_ATTRIB_ARRAY_DIVISOR: |
| // Don't verify ES3 context because GL_VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE uses |
| // the same constant. |
| META_ASSERT(GL_VERTEX_ATTRIB_ARRAY_DIVISOR == GL_VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE); |
| return true; |
| |
| case GL_VERTEX_ATTRIB_ARRAY_INTEGER: |
| if (context->getClientVersion() < 3) |
| { |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| return true; |
| |
| default: |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| } |
| |
| bool ValidateTexParamParameters(gl::Context *context, GLenum pname, GLint param) |
| { |
| switch (pname) |
| { |
| case GL_TEXTURE_WRAP_R: |
| case GL_TEXTURE_SWIZZLE_R: |
| case GL_TEXTURE_SWIZZLE_G: |
| case GL_TEXTURE_SWIZZLE_B: |
| case GL_TEXTURE_SWIZZLE_A: |
| case GL_TEXTURE_BASE_LEVEL: |
| case GL_TEXTURE_MAX_LEVEL: |
| case GL_TEXTURE_COMPARE_MODE: |
| case GL_TEXTURE_COMPARE_FUNC: |
| case GL_TEXTURE_MIN_LOD: |
| case GL_TEXTURE_MAX_LOD: |
| if (context->getClientVersion() < 3) |
| { |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| break; |
| |
| default: break; |
| } |
| |
| switch (pname) |
| { |
| case GL_TEXTURE_WRAP_S: |
| case GL_TEXTURE_WRAP_T: |
| case GL_TEXTURE_WRAP_R: |
| switch (param) |
| { |
| case GL_REPEAT: |
| case GL_CLAMP_TO_EDGE: |
| case GL_MIRRORED_REPEAT: |
| return true; |
| default: |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| |
| case GL_TEXTURE_MIN_FILTER: |
| switch (param) |
| { |
| case GL_NEAREST: |
| case GL_LINEAR: |
| case GL_NEAREST_MIPMAP_NEAREST: |
| case GL_LINEAR_MIPMAP_NEAREST: |
| case GL_NEAREST_MIPMAP_LINEAR: |
| case GL_LINEAR_MIPMAP_LINEAR: |
| return true; |
| default: |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| break; |
| |
| case GL_TEXTURE_MAG_FILTER: |
| switch (param) |
| { |
| case GL_NEAREST: |
| case GL_LINEAR: |
| return true; |
| default: |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| break; |
| |
| case GL_TEXTURE_USAGE_ANGLE: |
| switch (param) |
| { |
| case GL_NONE: |
| case GL_FRAMEBUFFER_ATTACHMENT_ANGLE: |
| return true; |
| default: |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| break; |
| |
| case GL_TEXTURE_MAX_ANISOTROPY_EXT: |
| if (!context->getExtensions().textureFilterAnisotropic) |
| { |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| |
| // we assume the parameter passed to this validation method is truncated, not rounded |
| if (param < 1) |
| { |
| context->recordError(Error(GL_INVALID_VALUE)); |
| return false; |
| } |
| return true; |
| |
| case GL_TEXTURE_MIN_LOD: |
| case GL_TEXTURE_MAX_LOD: |
| // any value is permissible |
| return true; |
| |
| case GL_TEXTURE_COMPARE_MODE: |
| // Acceptable mode parameters from GLES 3.0.2 spec, table 3.17 |
| switch (param) |
| { |
| case GL_NONE: |
| case GL_COMPARE_REF_TO_TEXTURE: |
| return true; |
| default: |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| break; |
| |
| case GL_TEXTURE_COMPARE_FUNC: |
| // Acceptable function parameters from GLES 3.0.2 spec, table 3.17 |
| switch (param) |
| { |
| case GL_LEQUAL: |
| case GL_GEQUAL: |
| case GL_LESS: |
| case GL_GREATER: |
| case GL_EQUAL: |
| case GL_NOTEQUAL: |
| case GL_ALWAYS: |
| case GL_NEVER: |
| return true; |
| default: |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| break; |
| |
| case GL_TEXTURE_SWIZZLE_R: |
| case GL_TEXTURE_SWIZZLE_G: |
| case GL_TEXTURE_SWIZZLE_B: |
| case GL_TEXTURE_SWIZZLE_A: |
| switch (param) |
| { |
| case GL_RED: |
| case GL_GREEN: |
| case GL_BLUE: |
| case GL_ALPHA: |
| case GL_ZERO: |
| case GL_ONE: |
| return true; |
| default: |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| break; |
| |
| case GL_TEXTURE_BASE_LEVEL: |
| case GL_TEXTURE_MAX_LEVEL: |
| if (param < 0) |
| { |
| context->recordError(Error(GL_INVALID_VALUE)); |
| return false; |
| } |
| return true; |
| |
| default: |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| } |
| |
| bool ValidateSamplerObjectParameter(gl::Context *context, GLenum pname) |
| { |
| switch (pname) |
| { |
| case GL_TEXTURE_MIN_FILTER: |
| case GL_TEXTURE_MAG_FILTER: |
| case GL_TEXTURE_WRAP_S: |
| case GL_TEXTURE_WRAP_T: |
| case GL_TEXTURE_WRAP_R: |
| case GL_TEXTURE_MIN_LOD: |
| case GL_TEXTURE_MAX_LOD: |
| case GL_TEXTURE_COMPARE_MODE: |
| case GL_TEXTURE_COMPARE_FUNC: |
| return true; |
| |
| default: |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| } |
| |
| bool ValidateReadPixelsParameters(gl::Context *context, GLint x, GLint y, GLsizei width, GLsizei height, |
| GLenum format, GLenum type, GLsizei *bufSize, GLvoid *pixels) |
| { |
| gl::Framebuffer *framebuffer = context->getState().getReadFramebuffer(); |
| ASSERT(framebuffer); |
| |
| if (framebuffer->completeness() != GL_FRAMEBUFFER_COMPLETE) |
| { |
| context->recordError(Error(GL_INVALID_FRAMEBUFFER_OPERATION)); |
| return false; |
| } |
| |
| if (context->getState().getReadFramebuffer()->id() != 0 && framebuffer->getSamples() != 0) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| if (!framebuffer->getReadColorbuffer()) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| GLenum currentInternalFormat, currentFormat, currentType; |
| GLuint clientVersion = context->getClientVersion(); |
| |
| context->getCurrentReadFormatType(¤tInternalFormat, ¤tFormat, ¤tType); |
| |
| bool validReadFormat = (clientVersion < 3) ? ValidES2ReadFormatType(context, format, type) : |
| ValidES3ReadFormatType(context, currentInternalFormat, format, type); |
| |
| if (!(currentFormat == format && currentType == type) && !validReadFormat) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| GLenum sizedInternalFormat = GetSizedInternalFormat(format, type); |
| const InternalFormat &sizedFormatInfo = GetInternalFormatInfo(sizedInternalFormat); |
| |
| GLsizei outputPitch = sizedFormatInfo.computeRowPitch(type, width, context->getState().getPackAlignment()); |
| // sized query sanity check |
| if (bufSize) |
| { |
| int requiredSize = outputPitch * height; |
| if (requiredSize > *bufSize) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| bool ValidateBeginQuery(gl::Context *context, GLenum target, GLuint id) |
| { |
| if (!ValidQueryType(context, target)) |
| { |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| |
| if (id == 0) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| // From EXT_occlusion_query_boolean: If BeginQueryEXT is called with an <id> |
| // of zero, if the active query object name for <target> is non-zero (for the |
| // targets ANY_SAMPLES_PASSED_EXT and ANY_SAMPLES_PASSED_CONSERVATIVE_EXT, if |
| // the active query for either target is non-zero), if <id> is the name of an |
| // existing query object whose type does not match <target>, or if <id> is the |
| // active query object name for any query type, the error INVALID_OPERATION is |
| // generated. |
| |
| // Ensure no other queries are active |
| // NOTE: If other queries than occlusion are supported, we will need to check |
| // separately that: |
| // a) The query ID passed is not the current active query for any target/type |
| // b) There are no active queries for the requested target (and in the case |
| // of GL_ANY_SAMPLES_PASSED_EXT and GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT, |
| // no query may be active for either if glBeginQuery targets either. |
| if (context->getState().isQueryActive()) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| Query *queryObject = context->getQuery(id, true, target); |
| |
| // check that name was obtained with glGenQueries |
| if (!queryObject) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| // check for type mismatch |
| if (queryObject->getType() != target) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool ValidateEndQuery(gl::Context *context, GLenum target) |
| { |
| if (!ValidQueryType(context, target)) |
| { |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| |
| const Query *queryObject = context->getState().getActiveQuery(target); |
| |
| if (queryObject == NULL) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| if (!queryObject->isStarted()) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| static bool ValidateUniformCommonBase(gl::Context *context, GLenum targetUniformType, |
| GLint location, GLsizei count, LinkedUniform **uniformOut) |
| { |
| if (count < 0) |
| { |
| context->recordError(Error(GL_INVALID_VALUE)); |
| return false; |
| } |
| |
| gl::ProgramBinary *programBinary = context->getState().getCurrentProgramBinary(); |
| if (!programBinary) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| if (location == -1) |
| { |
| // Silently ignore the uniform command |
| return false; |
| } |
| |
| if (!programBinary->isValidUniformLocation(location)) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| LinkedUniform *uniform = programBinary->getUniformByLocation(location); |
| |
| // attempting to write an array to a non-array uniform is an INVALID_OPERATION |
| if (uniform->elementCount() == 1 && count > 1) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| *uniformOut = uniform; |
| return true; |
| } |
| |
| bool ValidateUniform(gl::Context *context, GLenum uniformType, GLint location, GLsizei count) |
| { |
| // Check for ES3 uniform entry points |
| if (VariableComponentType(uniformType) == GL_UNSIGNED_INT && context->getClientVersion() < 3) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| LinkedUniform *uniform = NULL; |
| if (!ValidateUniformCommonBase(context, uniformType, location, count, &uniform)) |
| { |
| return false; |
| } |
| |
| GLenum targetBoolType = VariableBoolVectorType(uniformType); |
| bool samplerUniformCheck = (IsSampler(uniform->type) && uniformType == GL_INT); |
| if (!samplerUniformCheck && uniformType != uniform->type && targetBoolType != uniform->type) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool ValidateUniformMatrix(gl::Context *context, GLenum matrixType, GLint location, GLsizei count, |
| GLboolean transpose) |
| { |
| // Check for ES3 uniform entry points |
| int rows = VariableRowCount(matrixType); |
| int cols = VariableColumnCount(matrixType); |
| if (rows != cols && context->getClientVersion() < 3) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| if (transpose != GL_FALSE && context->getClientVersion() < 3) |
| { |
| context->recordError(Error(GL_INVALID_VALUE)); |
| return false; |
| } |
| |
| LinkedUniform *uniform = NULL; |
| if (!ValidateUniformCommonBase(context, matrixType, location, count, &uniform)) |
| { |
| return false; |
| } |
| |
| if (uniform->type != matrixType) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool ValidateStateQuery(gl::Context *context, GLenum pname, GLenum *nativeType, unsigned int *numParams) |
| { |
| if (!context->getQueryParameterInfo(pname, nativeType, numParams)) |
| { |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| |
| if (pname >= GL_DRAW_BUFFER0 && pname <= GL_DRAW_BUFFER15) |
| { |
| unsigned int colorAttachment = (pname - GL_DRAW_BUFFER0); |
| |
| if (colorAttachment >= context->getCaps().maxDrawBuffers) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| } |
| |
| switch (pname) |
| { |
| case GL_TEXTURE_BINDING_2D: |
| case GL_TEXTURE_BINDING_CUBE_MAP: |
| case GL_TEXTURE_BINDING_3D: |
| case GL_TEXTURE_BINDING_2D_ARRAY: |
| if (context->getState().getActiveSampler() >= context->getCaps().maxCombinedTextureImageUnits) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| break; |
| |
| case GL_IMPLEMENTATION_COLOR_READ_TYPE: |
| case GL_IMPLEMENTATION_COLOR_READ_FORMAT: |
| { |
| Framebuffer *framebuffer = context->getState().getReadFramebuffer(); |
| ASSERT(framebuffer); |
| if (framebuffer->completeness() != GL_FRAMEBUFFER_COMPLETE) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| FramebufferAttachment *attachment = framebuffer->getReadColorbuffer(); |
| if (!attachment) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| } |
| break; |
| |
| default: |
| break; |
| } |
| |
| // pname is valid, but there are no parameters to return |
| if (numParams == 0) |
| { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool ValidateCopyTexImageParametersBase(gl::Context* context, GLenum target, GLint level, GLenum internalformat, bool isSubImage, |
| GLint xoffset, GLint yoffset, GLint zoffset, GLint x, GLint y, GLsizei width, GLsizei height, |
| GLint border, GLenum *textureFormatOut) |
| { |
| |
| if (!ValidTexture2DDestinationTarget(context, target)) |
| { |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| |
| if (level < 0 || xoffset < 0 || yoffset < 0 || zoffset < 0 || width < 0 || height < 0) |
| { |
| context->recordError(Error(GL_INVALID_VALUE)); |
| return false; |
| } |
| |
| if (std::numeric_limits<GLsizei>::max() - xoffset < width || std::numeric_limits<GLsizei>::max() - yoffset < height) |
| { |
| context->recordError(Error(GL_INVALID_VALUE)); |
| return false; |
| } |
| |
| if (border != 0) |
| { |
| context->recordError(Error(GL_INVALID_VALUE)); |
| return false; |
| } |
| |
| if (!ValidMipLevel(context, target, level)) |
| { |
| context->recordError(Error(GL_INVALID_VALUE)); |
| return false; |
| } |
| |
| gl::Framebuffer *framebuffer = context->getState().getReadFramebuffer(); |
| if (framebuffer->completeness() != GL_FRAMEBUFFER_COMPLETE) |
| { |
| context->recordError(Error(GL_INVALID_FRAMEBUFFER_OPERATION)); |
| return false; |
| } |
| |
| if (context->getState().getReadFramebuffer()->id() != 0 && framebuffer->getSamples() != 0) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| const gl::Caps &caps = context->getCaps(); |
| |
| gl::Texture *texture = NULL; |
| GLenum textureInternalFormat = GL_NONE; |
| GLint textureLevelWidth = 0; |
| GLint textureLevelHeight = 0; |
| GLint textureLevelDepth = 0; |
| GLuint maxDimension = 0; |
| |
| switch (target) |
| { |
| case GL_TEXTURE_2D: |
| { |
| gl::Texture2D *texture2d = context->getTexture2D(); |
| if (texture2d) |
| { |
| textureInternalFormat = texture2d->getInternalFormat(level); |
| textureLevelWidth = texture2d->getWidth(level); |
| textureLevelHeight = texture2d->getHeight(level); |
| textureLevelDepth = 1; |
| texture = texture2d; |
| maxDimension = caps.max2DTextureSize; |
| } |
| } |
| break; |
| |
| case GL_TEXTURE_CUBE_MAP_POSITIVE_X: |
| case GL_TEXTURE_CUBE_MAP_NEGATIVE_X: |
| case GL_TEXTURE_CUBE_MAP_POSITIVE_Y: |
| case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: |
| case GL_TEXTURE_CUBE_MAP_POSITIVE_Z: |
| case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: |
| { |
| gl::TextureCubeMap *textureCube = context->getTextureCubeMap(); |
| if (textureCube) |
| { |
| textureInternalFormat = textureCube->getInternalFormat(target, level); |
| textureLevelWidth = textureCube->getWidth(target, level); |
| textureLevelHeight = textureCube->getHeight(target, level); |
| textureLevelDepth = 1; |
| texture = textureCube; |
| maxDimension = caps.maxCubeMapTextureSize; |
| } |
| } |
| break; |
| |
| case GL_TEXTURE_2D_ARRAY: |
| { |
| gl::Texture2DArray *texture2dArray = context->getTexture2DArray(); |
| if (texture2dArray) |
| { |
| textureInternalFormat = texture2dArray->getInternalFormat(level); |
| textureLevelWidth = texture2dArray->getWidth(level); |
| textureLevelHeight = texture2dArray->getHeight(level); |
| textureLevelDepth = texture2dArray->getLayers(level); |
| texture = texture2dArray; |
| maxDimension = caps.max2DTextureSize; |
| } |
| } |
| break; |
| |
| case GL_TEXTURE_3D: |
| { |
| gl::Texture3D *texture3d = context->getTexture3D(); |
| if (texture3d) |
| { |
| textureInternalFormat = texture3d->getInternalFormat(level); |
| textureLevelWidth = texture3d->getWidth(level); |
| textureLevelHeight = texture3d->getHeight(level); |
| textureLevelDepth = texture3d->getDepth(level); |
| texture = texture3d; |
| maxDimension = caps.max3DTextureSize; |
| } |
| } |
| break; |
| |
| default: |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| |
| if (!texture) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| if (texture->isImmutable() && !isSubImage) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| const gl::InternalFormat &formatInfo = gl::GetInternalFormatInfo(internalformat); |
| |
| if (formatInfo.depthBits > 0) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| if (formatInfo.compressed) |
| { |
| if (((width % formatInfo.compressedBlockWidth) != 0 && width != textureLevelWidth) || |
| ((height % formatInfo.compressedBlockHeight) != 0 && height != textureLevelHeight)) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| } |
| |
| if (isSubImage) |
| { |
| if (xoffset + width > textureLevelWidth || |
| yoffset + height > textureLevelHeight || |
| zoffset >= textureLevelDepth) |
| { |
| context->recordError(Error(GL_INVALID_VALUE)); |
| return false; |
| } |
| } |
| else |
| { |
| if (IsCubemapTextureTarget(target) && width != height) |
| { |
| context->recordError(Error(GL_INVALID_VALUE)); |
| return false; |
| } |
| |
| if (!formatInfo.textureSupport(context->getClientVersion(), context->getExtensions())) |
| { |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| |
| int maxLevelDimension = (maxDimension >> level); |
| if (static_cast<int>(width) > maxLevelDimension || static_cast<int>(height) > maxLevelDimension) |
| { |
| context->recordError(Error(GL_INVALID_VALUE)); |
| return false; |
| } |
| } |
| |
| *textureFormatOut = textureInternalFormat; |
| return true; |
| } |
| |
| static bool ValidateDrawBase(Context *context, GLenum mode, GLsizei count, GLsizei maxVertex, GLsizei primcount) |
| { |
| switch (mode) |
| { |
| case GL_POINTS: |
| case GL_LINES: |
| case GL_LINE_LOOP: |
| case GL_LINE_STRIP: |
| case GL_TRIANGLES: |
| case GL_TRIANGLE_STRIP: |
| case GL_TRIANGLE_FAN: |
| break; |
| default: |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| |
| if (count < 0) |
| { |
| context->recordError(Error(GL_INVALID_VALUE)); |
| return false; |
| } |
| |
| const State &state = context->getState(); |
| |
| // Check for mapped buffers |
| if (state.hasMappedBuffer(GL_ARRAY_BUFFER)) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| const gl::DepthStencilState &depthStencilState = state.getDepthStencilState(); |
| if (depthStencilState.stencilWritemask != depthStencilState.stencilBackWritemask || |
| state.getStencilRef() != state.getStencilBackRef() || |
| depthStencilState.stencilMask != depthStencilState.stencilBackMask) |
| { |
| // Note: these separate values are not supported in WebGL, due to D3D's limitations. |
| // See Section 6.10 of the WebGL 1.0 spec |
| ERR("This ANGLE implementation does not support separate front/back stencil " |
| "writemasks, reference values, or stencil mask values."); |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| const gl::Framebuffer *fbo = state.getDrawFramebuffer(); |
| if (!fbo || fbo->completeness() != GL_FRAMEBUFFER_COMPLETE) |
| { |
| context->recordError(Error(GL_INVALID_FRAMEBUFFER_OPERATION)); |
| return false; |
| } |
| |
| if (state.getCurrentProgramId() == 0) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| gl::ProgramBinary *programBinary = state.getCurrentProgramBinary(); |
| if (!programBinary->validateSamplers(NULL)) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| // Buffer validations |
| const VertexArray *vao = state.getVertexArray(); |
| for (int attributeIndex = 0; attributeIndex < MAX_VERTEX_ATTRIBS; attributeIndex++) |
| { |
| const VertexAttribute &attrib = vao->getVertexAttribute(attributeIndex); |
| bool attribActive = (programBinary->getSemanticIndex(attributeIndex) != -1); |
| if (attribActive && attrib.enabled) |
| { |
| gl::Buffer *buffer = attrib.buffer.get(); |
| |
| if (buffer) |
| { |
| GLint64 attribStride = static_cast<GLint64>(ComputeVertexAttributeStride(attrib)); |
| GLint64 maxVertexElement = 0; |
| |
| if (attrib.divisor > 0) |
| { |
| maxVertexElement = static_cast<GLint64>(primcount) / static_cast<GLint64>(attrib.divisor); |
| } |
| else |
| { |
| maxVertexElement = static_cast<GLint64>(maxVertex); |
| } |
| |
| GLint64 attribDataSize = maxVertexElement * attribStride; |
| |
| // [OpenGL ES 3.0.2] section 2.9.4 page 40: |
| // We can return INVALID_OPERATION if our vertex attribute does not have |
| // enough backing data. |
| if (attribDataSize > buffer->getSize()) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| } |
| else if (attrib.pointer == NULL) |
| { |
| // This is an application error that would normally result in a crash, |
| // but we catch it and return an error |
| context->recordError(Error(GL_INVALID_OPERATION, "An enabled vertex array has no buffer and no pointer.")); |
| return false; |
| } |
| } |
| } |
| |
| // No-op if zero count |
| return (count > 0); |
| } |
| |
| bool ValidateDrawArrays(Context *context, GLenum mode, GLint first, GLsizei count, GLsizei primcount) |
| { |
| if (first < 0) |
| { |
| context->recordError(Error(GL_INVALID_VALUE)); |
| return false; |
| } |
| |
| const State &state = context->getState(); |
| gl::TransformFeedback *curTransformFeedback = state.getCurrentTransformFeedback(); |
| if (curTransformFeedback && curTransformFeedback->isStarted() && !curTransformFeedback->isPaused() && |
| curTransformFeedback->getDrawMode() != mode) |
| { |
| // It is an invalid operation to call DrawArrays or DrawArraysInstanced with a draw mode |
| // that does not match the current transform feedback object's draw mode (if transform feedback |
| // is active), (3.0.2, section 2.14, pg 86) |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| if (!ValidateDrawBase(context, mode, count, count, primcount)) |
| { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool ValidateDrawArraysInstanced(Context *context, GLenum mode, GLint first, GLsizei count, GLsizei primcount) |
| { |
| if (primcount < 0) |
| { |
| context->recordError(Error(GL_INVALID_VALUE)); |
| return false; |
| } |
| |
| if (!ValidateDrawArrays(context, mode, first, count, primcount)) |
| { |
| return false; |
| } |
| |
| // No-op if zero primitive count |
| return (primcount > 0); |
| } |
| |
| bool ValidateDrawElements(Context *context, GLenum mode, GLsizei count, GLenum type, |
| const GLvoid* indices, GLsizei primcount, rx::RangeUI *indexRangeOut) |
| { |
| switch (type) |
| { |
| case GL_UNSIGNED_BYTE: |
| case GL_UNSIGNED_SHORT: |
| break; |
| case GL_UNSIGNED_INT: |
| if (!context->getExtensions().elementIndexUint) |
| { |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| break; |
| default: |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| |
| const State &state = context->getState(); |
| |
| gl::TransformFeedback *curTransformFeedback = state.getCurrentTransformFeedback(); |
| if (curTransformFeedback && curTransformFeedback->isStarted() && !curTransformFeedback->isPaused()) |
| { |
| // It is an invalid operation to call DrawElements, DrawRangeElements or DrawElementsInstanced |
| // while transform feedback is active, (3.0.2, section 2.14, pg 86) |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| // Check for mapped buffers |
| if (state.hasMappedBuffer(GL_ELEMENT_ARRAY_BUFFER)) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| const gl::VertexArray *vao = state.getVertexArray(); |
| const gl::Buffer *elementArrayBuffer = vao->getElementArrayBuffer(); |
| if (!indices && !elementArrayBuffer) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| if (elementArrayBuffer) |
| { |
| const gl::Type &typeInfo = gl::GetTypeInfo(type); |
| |
| GLint64 offset = reinterpret_cast<GLint64>(indices); |
| GLint64 byteCount = static_cast<GLint64>(typeInfo.bytes) * static_cast<GLint64>(count)+offset; |
| |
| // check for integer overflows |
| if (static_cast<GLuint>(count) > (std::numeric_limits<GLuint>::max() / typeInfo.bytes) || |
| byteCount > static_cast<GLint64>(std::numeric_limits<GLuint>::max())) |
| { |
| context->recordError(Error(GL_OUT_OF_MEMORY)); |
| return false; |
| } |
| |
| // Check for reading past the end of the bound buffer object |
| if (byteCount > elementArrayBuffer->getSize()) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| } |
| else if (!indices) |
| { |
| // Catch this programming error here |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| // Use max index to validate if our vertex buffers are large enough for the pull. |
| // TODO: offer fast path, with disabled index validation. |
| // TODO: also disable index checking on back-ends that are robust to out-of-range accesses. |
| if (elementArrayBuffer) |
| { |
| unsigned int offset = reinterpret_cast<unsigned int>(indices); |
| if (!elementArrayBuffer->getIndexRangeCache()->findRange(type, offset, count, indexRangeOut, NULL)) |
| { |
| const void *dataPointer = elementArrayBuffer->getImplementation()->getData(); |
| const uint8_t *offsetPointer = static_cast<const uint8_t *>(dataPointer) + offset; |
| *indexRangeOut = rx::IndexRangeCache::ComputeRange(type, offsetPointer, count); |
| } |
| } |
| else |
| { |
| *indexRangeOut = rx::IndexRangeCache::ComputeRange(type, indices, count); |
| } |
| |
| if (!ValidateDrawBase(context, mode, count, static_cast<GLsizei>(indexRangeOut->end), primcount)) |
| { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool ValidateDrawElementsInstanced(Context *context, |
| GLenum mode, GLsizei count, GLenum type, |
| const GLvoid *indices, GLsizei primcount, |
| rx::RangeUI *indexRangeOut) |
| { |
| if (primcount < 0) |
| { |
| context->recordError(Error(GL_INVALID_VALUE)); |
| return false; |
| } |
| |
| if (!ValidateDrawElements(context, mode, count, type, indices, primcount, indexRangeOut)) |
| { |
| return false; |
| } |
| |
| // No-op zero primitive count |
| return (primcount > 0); |
| } |
| |
| bool ValidateFramebufferTextureBase(Context *context, GLenum target, GLenum attachment, |
| GLuint texture, GLint level) |
| { |
| if (!ValidFramebufferTarget(target)) |
| { |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| |
| if (!ValidateAttachmentTarget(context, attachment)) |
| { |
| return false; |
| } |
| |
| if (texture != 0) |
| { |
| gl::Texture *tex = context->getTexture(texture); |
| |
| if (tex == NULL) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| if (level < 0) |
| { |
| context->recordError(Error(GL_INVALID_VALUE)); |
| return false; |
| } |
| } |
| |
| const gl::Framebuffer *framebuffer = context->getState().getTargetFramebuffer(target); |
| GLuint framebufferHandle = context->getState().getTargetFramebuffer(target)->id(); |
| |
| if (framebufferHandle == 0 || !framebuffer) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool ValidateFramebufferTexture2D(Context *context, GLenum target, GLenum attachment, |
| GLenum textarget, GLuint texture, GLint level) |
| { |
| // Attachments are required to be bound to level 0 in ES2 |
| if (context->getClientVersion() < 3 && level != 0) |
| { |
| context->recordError(Error(GL_INVALID_VALUE)); |
| return false; |
| } |
| |
| if (!ValidateFramebufferTextureBase(context, target, attachment, texture, level)) |
| { |
| return false; |
| } |
| |
| if (texture != 0) |
| { |
| gl::Texture *tex = context->getTexture(texture); |
| ASSERT(tex); |
| |
| const gl::Caps &caps = context->getCaps(); |
| |
| switch (textarget) |
| { |
| case GL_TEXTURE_2D: |
| { |
| if (level > gl::log2(caps.max2DTextureSize)) |
| { |
| context->recordError(Error(GL_INVALID_VALUE)); |
| return false; |
| } |
| if (tex->getTarget() != GL_TEXTURE_2D) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| gl::Texture2D *tex2d = static_cast<gl::Texture2D *>(tex); |
| if (tex2d->isCompressed(level)) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| } |
| break; |
| |
| case GL_TEXTURE_CUBE_MAP_POSITIVE_X: |
| case GL_TEXTURE_CUBE_MAP_NEGATIVE_X: |
| case GL_TEXTURE_CUBE_MAP_POSITIVE_Y: |
| case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: |
| case GL_TEXTURE_CUBE_MAP_POSITIVE_Z: |
| case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: |
| { |
| if (level > gl::log2(caps.maxCubeMapTextureSize)) |
| { |
| context->recordError(Error(GL_INVALID_VALUE)); |
| return false; |
| } |
| if (tex->getTarget() != GL_TEXTURE_CUBE_MAP) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| gl::TextureCubeMap *texcube = static_cast<gl::TextureCubeMap *>(tex); |
| if (texcube->isCompressed(textarget, level)) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| } |
| break; |
| |
| default: |
| context->recordError(Error(GL_INVALID_ENUM)); |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| bool ValidateGetUniformBase(Context *context, GLuint program, GLint location) |
| { |
| if (program == 0) |
| { |
| context->recordError(Error(GL_INVALID_VALUE)); |
| return false; |
| } |
| |
| gl::Program *programObject = context->getProgram(program); |
| |
| if (!programObject || !programObject->isLinked()) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| gl::ProgramBinary *programBinary = programObject->getProgramBinary(); |
| if (!programBinary) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| if (!programBinary->isValidUniformLocation(location)) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool ValidateGetUniformfv(Context *context, GLuint program, GLint location, GLfloat* params) |
| { |
| return ValidateGetUniformBase(context, program, location); |
| } |
| |
| bool ValidateGetUniformiv(Context *context, GLuint program, GLint location, GLint* params) |
| { |
| return ValidateGetUniformBase(context, program, location); |
| } |
| |
| static bool ValidateSizedGetUniform(Context *context, GLuint program, GLint location, GLsizei bufSize) |
| { |
| if (!ValidateGetUniformBase(context, program, location)) |
| { |
| return false; |
| } |
| |
| gl::Program *programObject = context->getProgram(program); |
| ASSERT(programObject); |
| gl::ProgramBinary *programBinary = programObject->getProgramBinary(); |
| |
| // sized queries -- ensure the provided buffer is large enough |
| LinkedUniform *uniform = programBinary->getUniformByLocation(location); |
| size_t requiredBytes = VariableExternalSize(uniform->type); |
| if (static_cast<size_t>(bufSize) < requiredBytes) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool ValidateGetnUniformfvEXT(Context *context, GLuint program, GLint location, GLsizei bufSize, GLfloat* params) |
| { |
| return ValidateSizedGetUniform(context, program, location, bufSize); |
| } |
| |
| bool ValidateGetnUniformivEXT(Context *context, GLuint program, GLint location, GLsizei bufSize, GLint* params) |
| { |
| return ValidateSizedGetUniform(context, program, location, bufSize); |
| } |
| |
| } |
