| // |
| // 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/Display.h" |
| #include "libANGLE/Texture.h" |
| #include "libANGLE/Framebuffer.h" |
| #include "libANGLE/FramebufferAttachment.h" |
| #include "libANGLE/formatutils.h" |
| #include "libANGLE/Image.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 |
| { |
| namespace |
| { |
| bool ValidateDrawAttribs(gl::Context *context, GLint primcount, GLint maxVertex) |
| { |
| const gl::State &state = context->getState(); |
| const gl::Program *program = state.getProgram(); |
| |
| const VertexArray *vao = state.getVertexArray(); |
| const auto &vertexAttribs = vao->getVertexAttributes(); |
| size_t maxEnabledAttrib = vao->getMaxEnabledAttribute(); |
| for (size_t attributeIndex = 0; attributeIndex < maxEnabledAttrib; ++attributeIndex) |
| { |
| const VertexAttribute &attrib = vertexAttribs[attributeIndex]; |
| if (program->isAttribLocationActive(attributeIndex) && 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); |
| } |
| |
| // If we're drawing zero vertices, we have enough data. |
| if (maxVertexElement > 0) |
| { |
| // Note: Last vertex element does not take the full stride! |
| GLint64 attribSize = |
| static_cast<GLint64>(ComputeVertexAttributeTypeSize(attrib)); |
| GLint64 attribDataSize = (maxVertexElement - 1) * attribStride + attribSize; |
| |
| // [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; |
| } |
| } |
| } |
| |
| return true; |
| } |
| |
| } // anonymous namespace |
| |
| 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 || context->getClientVersion() >= 3); |
| |
| 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(static_cast<int>(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 CompressedTextureFormatRequiresExactSize(GLenum internalFormat) |
| { |
| // List of compressed format that require that the texture size is smaller than or a multiple of |
| // the compressed block size. |
| switch (internalFormat) |
| { |
| case GL_COMPRESSED_RGB_S3TC_DXT1_EXT: |
| case GL_COMPRESSED_RGBA_S3TC_DXT1_EXT: |
| case GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE: |
| case GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE: |
| return true; |
| |
| default: |
| return false; |
| } |
| } |
| |
| 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 || height < 0) |
| { |
| return false; |
| } |
| |
| if (CompressedTextureFormatRequiresExactSize(internalFormat)) |
| { |
| if ((static_cast<GLuint>(width) > formatInfo.compressedBlockWidth && |
| width % formatInfo.compressedBlockWidth != 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; |
| } |
| } |
| |
| Program *GetValidProgram(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." |
| |
| Program *validProgram = context->getProgram(id); |
| |
| if (!validProgram) |
| { |
| if (context->getShader(id)) |
| { |
| context->recordError( |
| Error(GL_INVALID_OPERATION, "Expected a program name, but found a shader name")); |
| } |
| else |
| { |
| context->recordError(Error(GL_INVALID_VALUE, "Program name is not valid")); |
| } |
| } |
| |
| return validProgram; |
| } |
| |
| Shader *GetValidShader(Context *context, GLuint id) |
| { |
| // See ValidProgram for spec details. |
| |
| Shader *validShader = context->getShader(id); |
| |
| if (!validShader) |
| { |
| if (context->getProgram(id)) |
| { |
| context->recordError( |
| Error(GL_INVALID_OPERATION, "Expected a shader name, but found a program name")); |
| } |
| else |
| { |
| context->recordError(Error(GL_INVALID_VALUE, "Shader name is invalid")); |
| } |
| } |
| |
| return validShader; |
| } |
| |
| 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 (size_t i = 0; i < drawFramebuffer->getNumColorBuffers(); 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 (size_t colorAttachment = 0; |
| colorAttachment < drawFramebuffer->getNumColorBuffers(); ++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, |
| const 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; |
| } |
| |
| const LinkedUniform &uniform = program->getUniformByLocation(location); |
| |
| // attempting to write an array to a non-array uniform is an INVALID_OPERATION |
| if (!uniform.isArray() && 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; |
| } |
| |
| const LinkedUniform *uniform = nullptr; |
| 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; |
| } |
| |
| const LinkedUniform *uniform = nullptr; |
| 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->getImmutableFormat() && !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 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; |
| } |
| |
| if (context->getLimitations().noSeparateStencilRefsAndMasks) |
| { |
| 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; |
| } |
| |
| // 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, primcount)) |
| { |
| return false; |
| } |
| |
| if (!ValidateDrawAttribs(context, primcount, count)) |
| { |
| 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 (size_t attributeIndex = 0; attributeIndex < MAX_VERTEX_ATTRIBS; attributeIndex++) |
| { |
| const VertexAttribute &attrib = vao->getVertexAttribute(attributeIndex); |
| if (program->isAttribLocationActive(attributeIndex) && 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, |
| IndexRange *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().get(); |
| 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; |
| } |
| |
| if (!ValidateDrawBase(context, mode, count, primcount)) |
| { |
| 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, |
| state.isPrimitiveRestartEnabled(), indexRangeOut); |
| if (error.isError()) |
| { |
| context->recordError(error); |
| return false; |
| } |
| } |
| else |
| { |
| *indexRangeOut = ComputeIndexRange(type, indices, count, state.isPrimitiveRestartEnabled()); |
| } |
| |
| if (!ValidateDrawAttribs(context, primcount, static_cast<GLsizei>(indexRangeOut->end))) |
| { |
| return false; |
| } |
| |
| // No op if there are no real indices in the index data (all are primitive restart). |
| return (indexRangeOut->vertexIndexCount > 0); |
| } |
| |
| bool ValidateDrawElementsInstanced(Context *context, |
| GLenum mode, |
| GLsizei count, |
| GLenum type, |
| const GLvoid *indices, |
| GLsizei primcount, |
| IndexRange *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, |
| IndexRange *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; |
| } |
| |
| gl::Program *programObject = GetValidProgram(context, program); |
| if (!programObject) |
| { |
| return false; |
| } |
| |
| 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 |
| const 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); |
| } |
| |
| bool ValidateDiscardFramebufferBase(Context *context, GLenum target, GLsizei numAttachments, |
| const GLenum *attachments, bool defaultFramebuffer) |
| { |
| if (numAttachments < 0) |
| { |
| context->recordError(Error(GL_INVALID_VALUE, "numAttachments must not be less than zero")); |
| return false; |
| } |
| |
| for (GLsizei i = 0; i < numAttachments; ++i) |
| { |
| if (attachments[i] >= GL_COLOR_ATTACHMENT0 && attachments[i] <= GL_COLOR_ATTACHMENT15) |
| { |
| if (defaultFramebuffer) |
| { |
| context->recordError(Error(GL_INVALID_ENUM, "Invalid attachment when the default framebuffer is bound")); |
| return false; |
| } |
| |
| if (attachments[i] >= GL_COLOR_ATTACHMENT0 + context->getCaps().maxColorAttachments) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION, |
| "Requested color attachment is greater than the maximum supported color attachments")); |
| return false; |
| } |
| } |
| else |
| { |
| switch (attachments[i]) |
| { |
| case GL_DEPTH_ATTACHMENT: |
| case GL_STENCIL_ATTACHMENT: |
| case GL_DEPTH_STENCIL_ATTACHMENT: |
| if (defaultFramebuffer) |
| { |
| context->recordError(Error(GL_INVALID_ENUM, "Invalid attachment when the default framebuffer is bound")); |
| return false; |
| } |
| break; |
| case GL_COLOR: |
| case GL_DEPTH: |
| case GL_STENCIL: |
| if (!defaultFramebuffer) |
| { |
| context->recordError(Error(GL_INVALID_ENUM, "Invalid attachment when the default framebuffer is not bound")); |
| return false; |
| } |
| break; |
| default: |
| context->recordError(Error(GL_INVALID_ENUM, "Invalid attachment")); |
| return false; |
| } |
| } |
| } |
| |
| return true; |
| } |
| |
| bool ValidateInsertEventMarkerEXT(Context *context, GLsizei length, const char *marker) |
| { |
| // Note that debug marker calls must not set error state |
| |
| if (length < 0) |
| { |
| return false; |
| } |
| |
| if (marker == nullptr) |
| { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool ValidatePushGroupMarkerEXT(Context *context, GLsizei length, const char *marker) |
| { |
| // Note that debug marker calls must not set error state |
| |
| if (length < 0) |
| { |
| return false; |
| } |
| |
| if (length > 0 && marker == nullptr) |
| { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool ValidateEGLImageTargetTexture2DOES(Context *context, |
| egl::Display *display, |
| GLenum target, |
| egl::Image *image) |
| { |
| if (!context->getExtensions().eglImage && !context->getExtensions().eglImageExternal) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| switch (target) |
| { |
| case GL_TEXTURE_2D: |
| break; |
| |
| default: |
| context->recordError(Error(GL_INVALID_ENUM, "invalid texture target.")); |
| return false; |
| } |
| |
| if (!display->isValidImage(image)) |
| { |
| context->recordError(Error(GL_INVALID_VALUE, "EGL image is not valid.")); |
| return false; |
| } |
| |
| if (image->getSamples() > 0) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION, |
| "cannot create a 2D texture from a multisampled EGL image.")); |
| return false; |
| } |
| |
| const TextureCaps &textureCaps = context->getTextureCaps().get(image->getInternalFormat()); |
| if (!textureCaps.texturable) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION, |
| "EGL image internal format is not supported as a texture.")); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool ValidateEGLImageTargetRenderbufferStorageOES(Context *context, |
| egl::Display *display, |
| GLenum target, |
| egl::Image *image) |
| { |
| if (!context->getExtensions().eglImage) |
| { |
| context->recordError(Error(GL_INVALID_OPERATION)); |
| return false; |
| } |
| |
| switch (target) |
| { |
| case GL_RENDERBUFFER: |
| break; |
| |
| default: |
| context->recordError(Error(GL_INVALID_ENUM, "invalid renderbuffer target.")); |
| return false; |
| } |
| |
| if (!display->isValidImage(image)) |
| { |
| context->recordError(Error(GL_INVALID_VALUE, "EGL image is not valid.")); |
| return false; |
| } |
| |
| const TextureCaps &textureCaps = context->getTextureCaps().get(image->getInternalFormat()); |
| if (!textureCaps.renderable) |
| { |
| context->recordError(Error( |
| GL_INVALID_OPERATION, "EGL image internal format is not supported as a renderbuffer.")); |
| return false; |
| } |
| |
| return true; |
| } |
| } |
