| // | |
| // 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 "libANGLE/validationES.h" | |
| #include "libANGLE/validationES2.h" | |
| #include "libANGLE/validationES3.h" | |
| #include "libANGLE/Context.h" | |
| #include "libANGLE/Texture.h" | |
| #include "libANGLE/Framebuffer.h" | |
| #include "libANGLE/FramebufferAttachment.h" | |
| #include "libANGLE/formatutils.h" | |
| #include "libANGLE/Query.h" | |
| #include "libANGLE/Program.h" | |
| #include "libANGLE/Uniform.h" | |
| #include "libANGLE/TransformFeedback.h" | |
| #include "libANGLE/VertexArray.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) | |
| { | |
| static_assert(GL_DRAW_FRAMEBUFFER_ANGLE == GL_DRAW_FRAMEBUFFER && GL_READ_FRAMEBUFFER_ANGLE == GL_READ_FRAMEBUFFER, | |
| "ANGLE framebuffer enums must equal the ES3 framebuffer enums."); | |
| 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) | |
| { | |
| const Extensions &extensions = context->getExtensions(); | |
| switch (pname) | |
| { | |
| case GL_BUFFER_USAGE: | |
| case GL_BUFFER_SIZE: | |
| return true; | |
| case GL_BUFFER_ACCESS_OES: | |
| return extensions.mapBuffer; | |
| case GL_BUFFER_MAPPED: | |
| static_assert(GL_BUFFER_MAPPED == GL_BUFFER_MAPPED_OES, "GL enums should be equal."); | |
| return (context->getClientVersion() >= 3) || extensions.mapBuffer || extensions.mapBufferRange; | |
| // GL_BUFFER_MAP_POINTER is a special case, and may only be | |
| // queried with GetBufferPointerv | |
| case GL_BUFFER_ACCESS_FLAGS: | |
| case GL_BUFFER_MAP_OFFSET: | |
| case GL_BUFFER_MAP_LENGTH: | |
| return (context->getClientVersion() >= 3) || extensions.mapBufferRange; | |
| 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) | |
| { | |
| static_assert(GL_ANY_SAMPLES_PASSED == GL_ANY_SAMPLES_PASSED_EXT, "GL extension enums not equal."); | |
| static_assert(GL_ANY_SAMPLES_PASSED_CONSERVATIVE == GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT, "GL extension enums not equal."); | |
| 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 ValidateRenderbufferStorageParametersBase(gl::Context *context, GLenum target, GLsizei samples, | |
| GLenum internalformat, GLsizei width, GLsizei height) | |
| { | |
| 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 TextureCaps &formatCaps = context->getTextureCaps().get(internalformat); | |
| if (!formatCaps.renderable) | |
| { | |
| 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. | |
| const gl::InternalFormat &formatInfo = gl::GetInternalFormatInfo(internalformat); | |
| if (formatInfo.pixelBytes == 0) | |
| { | |
| 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; | |
| } | |
| GLuint handle = context->getState().getRenderbufferId(); | |
| if (handle == 0) | |
| { | |
| context->recordError(Error(GL_INVALID_OPERATION)); | |
| return false; | |
| } | |
| return true; | |
| } | |
| bool ValidateRenderbufferStorageParametersANGLE(gl::Context *context, GLenum target, GLsizei samples, | |
| GLenum internalformat, GLsizei width, GLsizei height) | |
| { | |
| ASSERT(samples == 0 || context->getExtensions().framebufferMultisample); | |
| // ANGLE_framebuffer_multisample states that the value of samples must be less than or equal | |
| // to MAX_SAMPLES_ANGLE (Context::getCaps().maxSamples) otherwise GL_INVALID_VALUE is | |
| // generated. | |
| if (static_cast<GLuint>(samples) > context->getCaps().maxSamples) | |
| { | |
| context->recordError(Error(GL_INVALID_VALUE)); | |
| return false; | |
| } | |
| // ANGLE_framebuffer_multisample states GL_OUT_OF_MEMORY is generated on a failure to create | |
| // the specified storage. This is different than ES 3.0 in which a sample number higher | |
| // than the maximum sample number supported by this format generates a GL_INVALID_VALUE. | |
| // The TextureCaps::getMaxSamples method is only guarenteed to be valid when the context is ES3. | |
| if (context->getClientVersion() >= 3) | |
| { | |
| const TextureCaps &formatCaps = context->getTextureCaps().get(internalformat); | |
| if (static_cast<GLuint>(samples) > formatCaps.getMaxSamples()) | |
| { | |
| context->recordError(Error(GL_OUT_OF_MEMORY)); | |
| return false; | |
| } | |
| } | |
| return ValidateRenderbufferStorageParametersBase(context, target, samples, internalformat, width, height); | |
| } | |
| 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); | |
| ASSERT(framebuffer); | |
| if (framebuffer->id() == 0) | |
| { | |
| context->recordError(Error(GL_INVALID_OPERATION, "Cannot change default FBO's attachments")); | |
| 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, const gl::FramebufferAttachment *readBuffer, const 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; | |
| } | |
| const gl::Framebuffer *readFramebuffer = context->getState().getReadFramebuffer(); | |
| const gl::Framebuffer *drawFramebuffer = context->getState().getDrawFramebuffer(); | |
| if (!readFramebuffer || !drawFramebuffer) | |
| { | |
| context->recordError(Error(GL_INVALID_FRAMEBUFFER_OPERATION)); | |
| return false; | |
| } | |
| if (!readFramebuffer->checkStatus(context->getData())) | |
| { | |
| context->recordError(Error(GL_INVALID_FRAMEBUFFER_OPERATION)); | |
| return false; | |
| } | |
| if (!drawFramebuffer->checkStatus(context->getData())) | |
| { | |
| context->recordError(Error(GL_INVALID_FRAMEBUFFER_OPERATION)); | |
| return false; | |
| } | |
| if (drawFramebuffer->getSamples(context->getData()) != 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) | |
| { | |
| const gl::FramebufferAttachment *readColorBuffer = readFramebuffer->getReadColorbuffer(); | |
| const gl::FramebufferAttachment *drawColorBuffer = drawFramebuffer->getFirstColorbuffer(); | |
| if (readColorBuffer && drawColorBuffer) | |
| { | |
| GLenum readInternalFormat = readColorBuffer->getInternalFormat(); | |
| const InternalFormat &readFormatInfo = GetInternalFormatInfo(readInternalFormat); | |
| for (GLuint i = 0; i < context->getCaps().maxColorAttachments; i++) | |
| { | |
| if (drawFramebuffer->isEnabledColorAttachment(i)) | |
| { | |
| GLenum drawInternalFormat = drawFramebuffer->getColorbuffer(i)->getInternalFormat(); | |
| 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 FramebufferAttachment *readColorAttachment = readFramebuffer->getReadColorbuffer(); | |
| if (!readColorAttachment || | |
| (!(readColorAttachment->type() == GL_TEXTURE && readColorAttachment->getTextureImageIndex().type == GL_TEXTURE_2D) && | |
| readColorAttachment->type() != GL_RENDERBUFFER && | |
| readColorAttachment->type() != GL_FRAMEBUFFER_DEFAULT)) | |
| { | |
| context->recordError(Error(GL_INVALID_OPERATION)); | |
| return false; | |
| } | |
| for (GLuint colorAttachment = 0; colorAttachment < context->getCaps().maxColorAttachments; ++colorAttachment) | |
| { | |
| if (drawFramebuffer->isEnabledColorAttachment(colorAttachment)) | |
| { | |
| const FramebufferAttachment *attachment = drawFramebuffer->getColorbuffer(colorAttachment); | |
| ASSERT(attachment); | |
| if (!(attachment->type() == GL_TEXTURE && attachment->getTextureImageIndex().type == GL_TEXTURE_2D) && | |
| attachment->type() != GL_RENDERBUFFER && | |
| attachment->type() != GL_FRAMEBUFFER_DEFAULT) | |
| { | |
| context->recordError(Error(GL_INVALID_OPERATION)); | |
| return false; | |
| } | |
| // Return an error if the destination formats do not match | |
| if (attachment->getInternalFormat() != readColorBuffer->getInternalFormat()) | |
| { | |
| context->recordError(Error(GL_INVALID_OPERATION)); | |
| return false; | |
| } | |
| } | |
| } | |
| int readSamples = readFramebuffer->getSamples(context->getData()); | |
| if (readSamples != 0 && IsPartialBlit(context, readColorBuffer, drawColorBuffer, | |
| srcX0, srcY0, srcX1, srcY1, | |
| dstX0, dstY0, dstX1, dstY1)) | |
| { | |
| context->recordError(Error(GL_INVALID_OPERATION)); | |
| return false; | |
| } | |
| } | |
| } | |
| } | |
| GLenum masks[] = {GL_DEPTH_BUFFER_BIT, GL_STENCIL_BUFFER_BIT}; | |
| GLenum attachments[] = {GL_DEPTH_ATTACHMENT, GL_STENCIL_ATTACHMENT}; | |
| for (size_t i = 0; i < 2; i++) | |
| { | |
| if (mask & masks[i]) | |
| { | |
| const gl::FramebufferAttachment *readBuffer = readFramebuffer->getAttachment(attachments[i]); | |
| const gl::FramebufferAttachment *drawBuffer = drawFramebuffer->getAttachment(attachments[i]); | |
| if (readBuffer && drawBuffer) | |
| { | |
| if (readBuffer->getInternalFormat() != drawBuffer->getInternalFormat()) | |
| { | |
| context->recordError(Error(GL_INVALID_OPERATION)); | |
| return false; | |
| } | |
| if (readBuffer->getSamples() > 0 && !sameBounds) | |
| { | |
| context->recordError(Error(GL_INVALID_OPERATION)); | |
| return false; | |
| } | |
| if (fromAngleExtension) | |
| { | |
| if (IsPartialBlit(context, readBuffer, drawBuffer, | |
| 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 (readBuffer->getSamples() != 0 || drawBuffer->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. | |
| static_assert(GL_VERTEX_ATTRIB_ARRAY_DIVISOR == GL_VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE, | |
| "ANGLE extension enums not equal to GL enums."); | |
| 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->checkStatus(context->getData()) != GL_FRAMEBUFFER_COMPLETE) | |
| { | |
| context->recordError(Error(GL_INVALID_FRAMEBUFFER_OPERATION)); | |
| return false; | |
| } | |
| if (context->getState().getReadFramebuffer()->id() != 0 && | |
| framebuffer->getSamples(context->getData()) != 0) | |
| { | |
| context->recordError(Error(GL_INVALID_OPERATION)); | |
| return false; | |
| } | |
| const FramebufferAttachment *readBuffer = framebuffer->getReadColorbuffer(); | |
| if (!readBuffer) | |
| { | |
| context->recordError(Error(GL_INVALID_OPERATION)); | |
| return false; | |
| } | |
| GLenum currentFormat = framebuffer->getImplementationColorReadFormat(); | |
| GLenum currentType = framebuffer->getImplementationColorReadType(); | |
| GLenum currentInternalFormat = readBuffer->getInternalFormat(); | |
| GLuint clientVersion = context->getClientVersion(); | |
| 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(), 0); | |
| // 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; | |
| } | |
| 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::Program *program = context->getState().getProgram(); | |
| if (!program) | |
| { | |
| context->recordError(Error(GL_INVALID_OPERATION)); | |
| return false; | |
| } | |
| if (location == -1) | |
| { | |
| // Silently ignore the uniform command | |
| return false; | |
| } | |
| if (!program->isValidUniformLocation(location)) | |
| { | |
| context->recordError(Error(GL_INVALID_OPERATION)); | |
| return false; | |
| } | |
| LinkedUniform *uniform = program->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 = (IsSamplerType(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; | |
| } | |
| const Caps &caps = context->getCaps(); | |
| if (pname >= GL_DRAW_BUFFER0 && pname <= GL_DRAW_BUFFER15) | |
| { | |
| unsigned int colorAttachment = (pname - GL_DRAW_BUFFER0); | |
| if (colorAttachment >= caps.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() >= caps.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->checkStatus(context->getData()) != GL_FRAMEBUFFER_COMPLETE) | |
| { | |
| context->recordError(Error(GL_INVALID_OPERATION)); | |
| return false; | |
| } | |
| const 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->checkStatus(context->getData()) != GL_FRAMEBUFFER_COMPLETE) | |
| { | |
| context->recordError(Error(GL_INVALID_FRAMEBUFFER_OPERATION)); | |
| return false; | |
| } | |
| if (context->getState().getReadFramebuffer()->id() != 0 && framebuffer->getSamples(context->getData()) != 0) | |
| { | |
| context->recordError(Error(GL_INVALID_OPERATION)); | |
| return false; | |
| } | |
| const gl::Caps &caps = context->getCaps(); | |
| GLuint maxDimension = 0; | |
| switch (target) | |
| { | |
| case GL_TEXTURE_2D: | |
| 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: | |
| maxDimension = caps.maxCubeMapTextureSize; | |
| break; | |
| case GL_TEXTURE_2D_ARRAY: | |
| maxDimension = caps.max2DTextureSize; | |
| break; | |
| case GL_TEXTURE_3D: | |
| maxDimension = caps.max3DTextureSize; | |
| break; | |
| default: | |
| context->recordError(Error(GL_INVALID_ENUM)); | |
| return false; | |
| } | |
| gl::Texture *texture = context->getTargetTexture(IsCubeMapTextureTarget(target) ? GL_TEXTURE_CUBE_MAP : target); | |
| 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 && !ValidCompressedImageSize(context, internalformat, width, height)) | |
| { | |
| context->recordError(Error(GL_INVALID_OPERATION)); | |
| return false; | |
| } | |
| if (isSubImage) | |
| { | |
| if (static_cast<size_t>(xoffset + width) > texture->getWidth(target, level) || | |
| static_cast<size_t>(yoffset + height) > texture->getHeight(target, level) || | |
| static_cast<size_t>(zoffset) >= texture->getDepth(target, level)) | |
| { | |
| 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 = texture->getInternalFormat(target, level); | |
| 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->checkStatus(context->getData()) != GL_FRAMEBUFFER_COMPLETE) | |
| { | |
| context->recordError(Error(GL_INVALID_FRAMEBUFFER_OPERATION)); | |
| return false; | |
| } | |
| gl::Program *program = state.getProgram(); | |
| if (!program) | |
| { | |
| context->recordError(Error(GL_INVALID_OPERATION)); | |
| return false; | |
| } | |
| if (!program->validateSamplers(NULL, context->getCaps())) | |
| { | |
| context->recordError(Error(GL_INVALID_OPERATION)); | |
| return false; | |
| } | |
| // Buffer validations | |
| const VertexArray *vao = state.getVertexArray(); | |
| const auto &vertexAttribs = vao->getVertexAttributes(); | |
| const int *semanticIndexes = program->getSemanticIndexes(); | |
| unsigned int maxEnabledAttrib = vao->getMaxEnabledAttribute(); | |
| for (size_t attributeIndex = 0; attributeIndex < maxEnabledAttrib; ++attributeIndex) | |
| { | |
| const VertexAttribute &attrib = vertexAttribs[attributeIndex]; | |
| bool attribActive = (semanticIndexes[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; | |
| } | |
| } | |
| } | |
| // Uniform buffer validation | |
| for (unsigned int uniformBlockIndex = 0; uniformBlockIndex < program->getActiveUniformBlockCount(); uniformBlockIndex++) | |
| { | |
| const gl::UniformBlock *uniformBlock = program->getUniformBlockByIndex(uniformBlockIndex); | |
| GLuint blockBinding = program->getUniformBlockBinding(uniformBlockIndex); | |
| const gl::Buffer *uniformBuffer = state.getIndexedUniformBuffer(blockBinding); | |
| if (!uniformBuffer) | |
| { | |
| // undefined behaviour | |
| context->recordError(Error(GL_INVALID_OPERATION, "It is undefined behaviour to have a used but unbound uniform buffer.")); | |
| return false; | |
| } | |
| size_t uniformBufferSize = state.getIndexedUniformBufferSize(blockBinding); | |
| if (uniformBufferSize == 0) | |
| { | |
| // Bind the whole buffer. | |
| uniformBufferSize = static_cast<size_t>(uniformBuffer->getSize()); | |
| } | |
| if (uniformBufferSize < uniformBlock->dataSize) | |
| { | |
| // undefined behaviour | |
| context->recordError(Error(GL_INVALID_OPERATION, "It is undefined behaviour to use a uniform buffer that is too small.")); | |
| 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->isActive() && !curTransformFeedback->isPaused() && | |
| curTransformFeedback->getPrimitiveMode() != 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); | |
| } | |
| static bool ValidateDrawInstancedANGLE(Context *context) | |
| { | |
| // Verify there is at least one active attribute with a divisor of zero | |
| const gl::State& state = context->getState(); | |
| gl::Program *program = state.getProgram(); | |
| const VertexArray *vao = state.getVertexArray(); | |
| for (int attributeIndex = 0; attributeIndex < MAX_VERTEX_ATTRIBS; attributeIndex++) | |
| { | |
| const VertexAttribute &attrib = vao->getVertexAttribute(attributeIndex); | |
| bool active = (program->getSemanticIndex(attributeIndex) != -1); | |
| if (active && attrib.divisor == 0) | |
| { | |
| return true; | |
| } | |
| } | |
| context->recordError(Error(GL_INVALID_OPERATION, "ANGLE_instanced_arrays requires that at least one active attribute" | |
| "has a divisor of zero.")); | |
| return false; | |
| } | |
| bool ValidateDrawArraysInstancedANGLE(Context *context, GLenum mode, GLint first, GLsizei count, GLsizei primcount) | |
| { | |
| if (!ValidateDrawInstancedANGLE(context)) | |
| { | |
| return false; | |
| } | |
| return ValidateDrawArraysInstanced(context, mode, first, count, primcount); | |
| } | |
| bool ValidateDrawElements(Context *context, GLenum mode, GLsizei count, GLenum type, | |
| const GLvoid *indices, GLsizei primcount, 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->isActive() && !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(); | |
| 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) | |
| { | |
| uintptr_t offset = reinterpret_cast<uintptr_t>(indices); | |
| Error error = elementArrayBuffer->getIndexRange(type, static_cast<size_t>(offset), count, indexRangeOut); | |
| if (error.isError()) | |
| { | |
| context->recordError(error); | |
| return false; | |
| } | |
| } | |
| else | |
| { | |
| *indexRangeOut = ComputeIndexRange(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, | |
| 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 ValidateDrawElementsInstancedANGLE(Context *context, GLenum mode, GLsizei count, GLenum type, | |
| const GLvoid *indices, GLsizei primcount, RangeUI *indexRangeOut) | |
| { | |
| if (!ValidateDrawInstancedANGLE(context)) | |
| { | |
| return false; | |
| } | |
| return ValidateDrawElementsInstanced(context, mode, count, type, indices, primcount, indexRangeOut); | |
| } | |
| 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); | |
| ASSERT(framebuffer); | |
| if (framebuffer->id() == 0) | |
| { | |
| context->recordError(Error(GL_INVALID_OPERATION, "Cannot change default FBO's attachments")); | |
| 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 without ES3 or the GL_OES_fbo_render_mipmap extension | |
| if (context->getClientVersion() < 3 && !context->getExtensions().fboRenderMipmap && 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; | |
| } | |
| } | |
| 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; | |
| } | |
| } | |
| break; | |
| default: | |
| context->recordError(Error(GL_INVALID_ENUM)); | |
| return false; | |
| } | |
| const gl::InternalFormat &internalFormatInfo = gl::GetInternalFormatInfo(tex->getInternalFormat(textarget, level)); | |
| if (internalFormatInfo.compressed) | |
| { | |
| context->recordError(Error(GL_INVALID_OPERATION)); | |
| return false; | |
| } | |
| } | |
| return true; | |
| } | |
| bool ValidateGetUniformBase(Context *context, GLuint program, GLint location) | |
| { | |
| if (program == 0) | |
| { | |
| context->recordError(Error(GL_INVALID_VALUE)); | |
| return false; | |
| } | |
| if (!ValidProgram(context, program)) | |
| { | |
| return false; | |
| } | |
| gl::Program *programObject = context->getProgram(program); | |
| if (!programObject || !programObject->isLinked()) | |
| { | |
| context->recordError(Error(GL_INVALID_OPERATION)); | |
| return false; | |
| } | |
| if (!programObject->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); | |
| // sized queries -- ensure the provided buffer is large enough | |
| LinkedUniform *uniform = programObject->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); | |
| } | |
| } |