| #include "precompiled.h" | |
| // | |
| // Copyright (c) 2013-2014 The ANGLE Project Authors. All rights reserved. | |
| // Use of this source code is governed by a BSD-style license that can be | |
| // found in the LICENSE file. | |
| // | |
| // validationES.h: Validation functions for generic OpenGL ES entry point parameters | |
| #include "libGLESv2/validationES.h" | |
| #include "libGLESv2/validationES2.h" | |
| #include "libGLESv2/validationES3.h" | |
| #include "libGLESv2/Context.h" | |
| #include "libGLESv2/Texture.h" | |
| #include "libGLESv2/Framebuffer.h" | |
| #include "libGLESv2/FramebufferAttachment.h" | |
| #include "libGLESv2/formatutils.h" | |
| #include "libGLESv2/main.h" | |
| #include "libGLESv2/Query.h" | |
| #include "libGLESv2/ProgramBinary.h" | |
| #include "libGLESv2/TransformFeedback.h" | |
| #include "common/mathutil.h" | |
| #include "common/utilities.h" | |
| namespace gl | |
| { | |
| bool ValidCap(const Context *context, GLenum cap) | |
| { | |
| switch (cap) | |
| { | |
| case GL_CULL_FACE: | |
| case GL_POLYGON_OFFSET_FILL: | |
| case GL_SAMPLE_ALPHA_TO_COVERAGE: | |
| case GL_SAMPLE_COVERAGE: | |
| case GL_SCISSOR_TEST: | |
| case GL_STENCIL_TEST: | |
| case GL_DEPTH_TEST: | |
| case GL_BLEND: | |
| case GL_DITHER: | |
| return true; | |
| case GL_PRIMITIVE_RESTART_FIXED_INDEX: | |
| case GL_RASTERIZER_DISCARD: | |
| return (context->getClientVersion() >= 3); | |
| default: | |
| return false; | |
| } | |
| } | |
| bool ValidTextureTarget(const Context *context, GLenum target) | |
| { | |
| switch (target) | |
| { | |
| case GL_TEXTURE_2D: | |
| case GL_TEXTURE_CUBE_MAP: | |
| return true; | |
| case GL_TEXTURE_3D: | |
| case GL_TEXTURE_2D_ARRAY: | |
| return (context->getClientVersion() >= 3); | |
| default: | |
| return false; | |
| } | |
| } | |
| // This function differs from ValidTextureTarget in that the target must be | |
| // usable as the destination of a 2D operation-- so a cube face is valid, but | |
| // GL_TEXTURE_CUBE_MAP is not. | |
| // Note: duplicate of IsInternalTextureTarget | |
| bool ValidTexture2DDestinationTarget(const Context *context, GLenum target) | |
| { | |
| switch (target) | |
| { | |
| case GL_TEXTURE_2D: | |
| case GL_TEXTURE_CUBE_MAP_POSITIVE_X: | |
| case GL_TEXTURE_CUBE_MAP_NEGATIVE_X: | |
| case GL_TEXTURE_CUBE_MAP_POSITIVE_Y: | |
| case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: | |
| case GL_TEXTURE_CUBE_MAP_POSITIVE_Z: | |
| case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: | |
| return true; | |
| case GL_TEXTURE_2D_ARRAY: | |
| case GL_TEXTURE_3D: | |
| return (context->getClientVersion() >= 3); | |
| default: | |
| return false; | |
| } | |
| } | |
| bool ValidFramebufferTarget(GLenum target) | |
| { | |
| META_ASSERT(GL_DRAW_FRAMEBUFFER_ANGLE == GL_DRAW_FRAMEBUFFER && GL_READ_FRAMEBUFFER_ANGLE == GL_READ_FRAMEBUFFER); | |
| switch (target) | |
| { | |
| case GL_FRAMEBUFFER: return true; | |
| case GL_READ_FRAMEBUFFER: return true; | |
| case GL_DRAW_FRAMEBUFFER: return true; | |
| default: return false; | |
| } | |
| } | |
| bool ValidBufferTarget(const Context *context, GLenum target) | |
| { | |
| switch (target) | |
| { | |
| case GL_ARRAY_BUFFER: | |
| case GL_ELEMENT_ARRAY_BUFFER: | |
| return true; | |
| case GL_PIXEL_PACK_BUFFER: | |
| case GL_PIXEL_UNPACK_BUFFER: | |
| return context->getExtensions().pixelBufferObject; | |
| case GL_COPY_READ_BUFFER: | |
| case GL_COPY_WRITE_BUFFER: | |
| case GL_TRANSFORM_FEEDBACK_BUFFER: | |
| case GL_UNIFORM_BUFFER: | |
| return (context->getClientVersion() >= 3); | |
| default: | |
| return false; | |
| } | |
| } | |
| bool ValidBufferParameter(const Context *context, GLenum pname) | |
| { | |
| switch (pname) | |
| { | |
| case GL_BUFFER_USAGE: | |
| case GL_BUFFER_SIZE: | |
| return true; | |
| // GL_BUFFER_MAP_POINTER is a special case, and may only be | |
| // queried with GetBufferPointerv | |
| case GL_BUFFER_ACCESS_FLAGS: | |
| case GL_BUFFER_MAPPED: | |
| case GL_BUFFER_MAP_OFFSET: | |
| case GL_BUFFER_MAP_LENGTH: | |
| return (context->getClientVersion() >= 3); | |
| default: | |
| return false; | |
| } | |
| } | |
| bool ValidMipLevel(const Context *context, GLenum target, GLint level) | |
| { | |
| size_t maxDimension = 0; | |
| switch (target) | |
| { | |
| case GL_TEXTURE_2D: maxDimension = context->getCaps().max2DTextureSize; break; | |
| case GL_TEXTURE_CUBE_MAP: | |
| case GL_TEXTURE_CUBE_MAP_POSITIVE_X: | |
| case GL_TEXTURE_CUBE_MAP_NEGATIVE_X: | |
| case GL_TEXTURE_CUBE_MAP_POSITIVE_Y: | |
| case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: | |
| case GL_TEXTURE_CUBE_MAP_POSITIVE_Z: | |
| case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: maxDimension = context->getCaps().maxCubeMapTextureSize; break; | |
| case GL_TEXTURE_3D: maxDimension = context->getCaps().max3DTextureSize; break; | |
| case GL_TEXTURE_2D_ARRAY: maxDimension = context->getCaps().max2DTextureSize; break; | |
| default: UNREACHABLE(); | |
| } | |
| return level <= gl::log2(maxDimension); | |
| } | |
| bool ValidImageSize(const gl::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 gl::Context *context, GLenum internalFormat, GLsizei width, GLsizei height) | |
| { | |
| if (!IsFormatCompressed(internalFormat)) | |
| { | |
| return false; | |
| } | |
| GLint blockWidth = GetCompressedBlockWidth(internalFormat); | |
| GLint blockHeight = GetCompressedBlockHeight(internalFormat); | |
| if (width < 0 || (width > blockWidth && width % blockWidth != 0) || | |
| height < 0 || (height > blockHeight && height % blockHeight != 0)) | |
| { | |
| return false; | |
| } | |
| return true; | |
| } | |
| bool ValidQueryType(const Context *context, GLenum queryType) | |
| { | |
| META_ASSERT(GL_ANY_SAMPLES_PASSED == GL_ANY_SAMPLES_PASSED_EXT); | |
| META_ASSERT(GL_ANY_SAMPLES_PASSED_CONSERVATIVE == GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT); | |
| switch (queryType) | |
| { | |
| case GL_ANY_SAMPLES_PASSED: | |
| case GL_ANY_SAMPLES_PASSED_CONSERVATIVE: | |
| return true; | |
| case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN: | |
| return (context->getClientVersion() >= 3); | |
| default: | |
| return false; | |
| } | |
| } | |
| bool ValidProgram(const 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 | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| else | |
| { | |
| // No shader/program object has this ID | |
| return gl::error(GL_INVALID_VALUE, false); | |
| } | |
| } | |
| bool ValidateAttachmentTarget(const 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) | |
| { | |
| return gl::error(GL_INVALID_VALUE, false); | |
| } | |
| } | |
| else | |
| { | |
| switch (attachment) | |
| { | |
| case GL_DEPTH_ATTACHMENT: | |
| case GL_STENCIL_ATTACHMENT: | |
| break; | |
| case GL_DEPTH_STENCIL_ATTACHMENT: | |
| if (context->getClientVersion() < 3) | |
| { | |
| return gl::error(GL_INVALID_ENUM, false); | |
| } | |
| break; | |
| default: | |
| return gl::error(GL_INVALID_ENUM, false); | |
| } | |
| } | |
| return true; | |
| } | |
| bool ValidateRenderbufferStorageParameters(const gl::Context *context, GLenum target, GLsizei samples, | |
| GLenum internalformat, GLsizei width, GLsizei height, | |
| bool angleExtension) | |
| { | |
| switch (target) | |
| { | |
| case GL_RENDERBUFFER: | |
| break; | |
| default: | |
| return gl::error(GL_INVALID_ENUM, false); | |
| } | |
| if (width < 0 || height < 0 || samples < 0) | |
| { | |
| return gl::error(GL_INVALID_VALUE, false); | |
| } | |
| if (!gl::IsValidInternalFormat(internalformat, context->getExtensions(), context->getClientVersion())) | |
| { | |
| return gl::error(GL_INVALID_ENUM, false); | |
| } | |
| // ANGLE_framebuffer_multisample does not explicitly state that the internal format must be | |
| // sized but it does state that the format must be in the ES2.0 spec table 4.5 which contains | |
| // only sized internal formats. The ES3 spec (section 4.4.2) does, however, state that the | |
| // internal format must be sized and not an integer format if samples is greater than zero. | |
| if (!gl::IsSizedInternalFormat(internalformat)) | |
| { | |
| return gl::error(GL_INVALID_ENUM, false); | |
| } | |
| GLenum componentType = gl::GetComponentType(internalformat); | |
| if ((componentType == GL_UNSIGNED_INT || componentType == GL_INT) && samples > 0) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| const TextureCaps &formatCaps = context->getTextureCaps().get(internalformat); | |
| if (!formatCaps.colorRendering && !formatCaps.depthRendering && !formatCaps.stencilRendering) | |
| { | |
| return gl::error(GL_INVALID_ENUM, false); | |
| } | |
| if (static_cast<GLuint>(std::max(width, height)) > context->getCaps().maxRenderbufferSize) | |
| { | |
| return gl::error(GL_INVALID_VALUE, false); | |
| } | |
| // ANGLE_framebuffer_multisample states that the value of samples must be less than or equal | |
| // to MAX_SAMPLES_ANGLE (Context::getMaxSupportedSamples) while the ES3.0 spec (section 4.4.2) | |
| // states that samples must be less than or equal to the maximum samples for the specified | |
| // internal format. | |
| if (angleExtension) | |
| { | |
| if (samples > context->getMaxSupportedSamples()) | |
| { | |
| return gl::error(GL_INVALID_VALUE, false); | |
| } | |
| } | |
| else | |
| { | |
| if (samples > context->getMaxSupportedFormatSamples(internalformat)) | |
| { | |
| return gl::error(GL_INVALID_VALUE, false); | |
| } | |
| } | |
| GLuint handle = context->getRenderbufferHandle(); | |
| if (handle == 0) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| return true; | |
| } | |
| bool ValidateFramebufferRenderbufferParameters(gl::Context *context, GLenum target, GLenum attachment, | |
| GLenum renderbuffertarget, GLuint renderbuffer) | |
| { | |
| gl::Framebuffer *framebuffer = context->getTargetFramebuffer(target); | |
| GLuint framebufferHandle = context->getTargetFramebufferHandle(target); | |
| if (!framebuffer || (framebufferHandle == 0 && renderbuffer != 0)) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, 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)) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| } | |
| return true; | |
| } | |
| static bool IsPartialBlit(gl::Context *context, gl::FramebufferAttachment *readBuffer, gl::FramebufferAttachment *writeBuffer, | |
| GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, | |
| GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1) | |
| { | |
| if (srcX0 != 0 || srcY0 != 0 || dstX0 != 0 || dstY0 != 0 || | |
| dstX1 != writeBuffer->getWidth() || dstY1 != writeBuffer->getHeight() || | |
| srcX1 != readBuffer->getWidth() || srcY1 != readBuffer->getHeight()) | |
| { | |
| return true; | |
| } | |
| else if (context->isScissorTestEnabled()) | |
| { | |
| int scissorX, scissorY, scissorWidth, scissorHeight; | |
| context->getScissorParams(&scissorX, &scissorY, &scissorWidth, &scissorHeight); | |
| return scissorX > 0 || scissorY > 0 || | |
| scissorWidth < writeBuffer->getWidth() || | |
| scissorHeight < 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) | |
| { | |
| return gl::error(GL_INVALID_ENUM, false); | |
| } | |
| break; | |
| default: | |
| return gl::error(GL_INVALID_ENUM, false); | |
| } | |
| if ((mask & ~(GL_COLOR_BUFFER_BIT | GL_STENCIL_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)) != 0) | |
| { | |
| return gl::error(GL_INVALID_VALUE, 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."); | |
| return gl::error(GL_INVALID_OPERATION, 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) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| if (context->getReadFramebufferHandle() == context->getDrawFramebufferHandle()) | |
| { | |
| if (fromAngleExtension) | |
| { | |
| ERR("Blits with the same source and destination framebuffer are not supported by this " | |
| "implementation."); | |
| } | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| gl::Framebuffer *readFramebuffer = context->getReadFramebuffer(); | |
| gl::Framebuffer *drawFramebuffer = context->getDrawFramebuffer(); | |
| if (!readFramebuffer || readFramebuffer->completeness() != GL_FRAMEBUFFER_COMPLETE || | |
| !drawFramebuffer || drawFramebuffer->completeness() != GL_FRAMEBUFFER_COMPLETE) | |
| { | |
| return gl::error(GL_INVALID_FRAMEBUFFER_OPERATION, false); | |
| } | |
| if (drawFramebuffer->getSamples() != 0) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| bool sameBounds = srcX0 == dstX0 && srcY0 == dstY0 && srcX1 == dstX1 && srcY1 == dstY1; | |
| if (mask & GL_COLOR_BUFFER_BIT) | |
| { | |
| gl::FramebufferAttachment *readColorBuffer = readFramebuffer->getReadColorbuffer(); | |
| gl::FramebufferAttachment *drawColorBuffer = drawFramebuffer->getFirstColorbuffer(); | |
| if (readColorBuffer && drawColorBuffer) | |
| { | |
| GLenum readInternalFormat = readColorBuffer->getActualFormat(); | |
| GLenum readComponentType = gl::GetComponentType(readInternalFormat); | |
| for (unsigned int i = 0; i < gl::IMPLEMENTATION_MAX_DRAW_BUFFERS; i++) | |
| { | |
| if (drawFramebuffer->isEnabledColorAttachment(i)) | |
| { | |
| GLenum drawInternalFormat = drawFramebuffer->getColorbuffer(i)->getActualFormat(); | |
| GLenum drawComponentType = gl::GetComponentType(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 ( (readComponentType == GL_UNSIGNED_NORMALIZED || readComponentType == GL_SIGNED_NORMALIZED) && | |
| !(drawComponentType == GL_UNSIGNED_NORMALIZED || drawComponentType == GL_SIGNED_NORMALIZED)) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| if (readComponentType == GL_UNSIGNED_INT && drawComponentType != GL_UNSIGNED_INT) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| if (readComponentType == GL_INT && drawComponentType != GL_INT) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| if (readColorBuffer->getSamples() > 0 && (readInternalFormat != drawInternalFormat || !sameBounds)) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| } | |
| } | |
| if ((readComponentType == GL_INT || readComponentType == GL_UNSIGNED_INT) && filter == GL_LINEAR) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| if (fromAngleExtension) | |
| { | |
| const GLenum readColorbufferType = readFramebuffer->getReadColorbufferType(); | |
| if (readColorbufferType != GL_TEXTURE_2D && readColorbufferType != GL_RENDERBUFFER) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| for (unsigned int colorAttachment = 0; colorAttachment < gl::IMPLEMENTATION_MAX_DRAW_BUFFERS; colorAttachment++) | |
| { | |
| if (drawFramebuffer->isEnabledColorAttachment(colorAttachment)) | |
| { | |
| FramebufferAttachment *attachment = drawFramebuffer->getColorbuffer(colorAttachment); | |
| ASSERT(attachment); | |
| if (attachment->type() != GL_TEXTURE_2D && attachment->type() != GL_RENDERBUFFER) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| if (attachment->getActualFormat() != readColorBuffer->getActualFormat()) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| } | |
| } | |
| if (readFramebuffer->getSamples() != 0 && IsPartialBlit(context, readColorBuffer, drawColorBuffer, | |
| srcX0, srcY0, srcX1, srcY1, | |
| dstX0, dstY0, dstX1, dstY1)) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| } | |
| } | |
| } | |
| if (mask & GL_DEPTH_BUFFER_BIT) | |
| { | |
| gl::FramebufferAttachment *readDepthBuffer = readFramebuffer->getDepthbuffer(); | |
| gl::FramebufferAttachment *drawDepthBuffer = drawFramebuffer->getDepthbuffer(); | |
| if (readDepthBuffer && drawDepthBuffer) | |
| { | |
| if (readDepthBuffer->getActualFormat() != drawDepthBuffer->getActualFormat()) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| if (readDepthBuffer->getSamples() > 0 && !sameBounds) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| if (fromAngleExtension) | |
| { | |
| if (IsPartialBlit(context, readDepthBuffer, drawDepthBuffer, | |
| srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1)) | |
| { | |
| ERR("Only whole-buffer depth and stencil blits are supported by this implementation."); | |
| return gl::error(GL_INVALID_OPERATION, false); // only whole-buffer copies are permitted | |
| } | |
| if (readDepthBuffer->getSamples() != 0 || drawDepthBuffer->getSamples() != 0) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| } | |
| } | |
| } | |
| if (mask & GL_STENCIL_BUFFER_BIT) | |
| { | |
| gl::FramebufferAttachment *readStencilBuffer = readFramebuffer->getStencilbuffer(); | |
| gl::FramebufferAttachment *drawStencilBuffer = drawFramebuffer->getStencilbuffer(); | |
| if (readStencilBuffer && drawStencilBuffer) | |
| { | |
| if (readStencilBuffer->getActualFormat() != drawStencilBuffer->getActualFormat()) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| if (readStencilBuffer->getSamples() > 0 && !sameBounds) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| if (fromAngleExtension) | |
| { | |
| if (IsPartialBlit(context, readStencilBuffer, drawStencilBuffer, | |
| srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1)) | |
| { | |
| ERR("Only whole-buffer depth and stencil blits are supported by this implementation."); | |
| return gl::error(GL_INVALID_OPERATION, false); // only whole-buffer copies are permitted | |
| } | |
| if (readStencilBuffer->getSamples() != 0 || drawStencilBuffer->getSamples() != 0) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| } | |
| } | |
| } | |
| return true; | |
| } | |
| bool ValidateGetVertexAttribParameters(GLenum pname, int clientVersion) | |
| { | |
| switch (pname) | |
| { | |
| case GL_VERTEX_ATTRIB_ARRAY_ENABLED: | |
| case GL_VERTEX_ATTRIB_ARRAY_SIZE: | |
| case GL_VERTEX_ATTRIB_ARRAY_STRIDE: | |
| case GL_VERTEX_ATTRIB_ARRAY_TYPE: | |
| case GL_VERTEX_ATTRIB_ARRAY_NORMALIZED: | |
| case GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING: | |
| case GL_CURRENT_VERTEX_ATTRIB: | |
| return true; | |
| case GL_VERTEX_ATTRIB_ARRAY_DIVISOR: | |
| // Don't verify ES3 context because GL_VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE uses | |
| // the same constant. | |
| META_ASSERT(GL_VERTEX_ATTRIB_ARRAY_DIVISOR == GL_VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE); | |
| return true; | |
| case GL_VERTEX_ATTRIB_ARRAY_INTEGER: | |
| return ((clientVersion >= 3) ? true : gl::error(GL_INVALID_ENUM, false)); | |
| default: | |
| return gl::error(GL_INVALID_ENUM, 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) | |
| { | |
| return gl::error(GL_INVALID_ENUM, 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: | |
| return gl::error(GL_INVALID_ENUM, 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: | |
| return gl::error(GL_INVALID_ENUM, false); | |
| } | |
| break; | |
| case GL_TEXTURE_MAG_FILTER: | |
| switch (param) | |
| { | |
| case GL_NEAREST: | |
| case GL_LINEAR: | |
| return true; | |
| default: | |
| return gl::error(GL_INVALID_ENUM, false); | |
| } | |
| break; | |
| case GL_TEXTURE_USAGE_ANGLE: | |
| switch (param) | |
| { | |
| case GL_NONE: | |
| case GL_FRAMEBUFFER_ATTACHMENT_ANGLE: | |
| return true; | |
| default: | |
| return gl::error(GL_INVALID_ENUM, false); | |
| } | |
| break; | |
| case GL_TEXTURE_MAX_ANISOTROPY_EXT: | |
| if (!context->getExtensions().textureFilterAnisotropic) | |
| { | |
| return gl::error(GL_INVALID_ENUM, false); | |
| } | |
| // we assume the parameter passed to this validation method is truncated, not rounded | |
| if (param < 1) | |
| { | |
| return gl::error(GL_INVALID_VALUE, 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: | |
| return gl::error(GL_INVALID_ENUM, 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: | |
| return gl::error(GL_INVALID_ENUM, 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: | |
| return gl::error(GL_INVALID_ENUM, false); | |
| } | |
| break; | |
| case GL_TEXTURE_BASE_LEVEL: | |
| case GL_TEXTURE_MAX_LEVEL: | |
| if (param < 0) | |
| { | |
| return gl::error(GL_INVALID_VALUE, false); | |
| } | |
| return true; | |
| default: | |
| return gl::error(GL_INVALID_ENUM, false); | |
| } | |
| } | |
| bool ValidateSamplerObjectParameter(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: | |
| return gl::error(GL_INVALID_ENUM, 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->getReadFramebuffer(); | |
| ASSERT(framebuffer); | |
| if (framebuffer->completeness() != GL_FRAMEBUFFER_COMPLETE) | |
| { | |
| return gl::error(GL_INVALID_FRAMEBUFFER_OPERATION, false); | |
| } | |
| if (context->getReadFramebufferHandle() != 0 && framebuffer->getSamples() != 0) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| if (!framebuffer->getReadColorbuffer()) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| GLenum currentInternalFormat, currentFormat, currentType; | |
| GLuint clientVersion = context->getClientVersion(); | |
| context->getCurrentReadFormatType(¤tInternalFormat, ¤tFormat, ¤tType); | |
| bool validReadFormat = (clientVersion < 3) ? ValidES2ReadFormatType(context, format, type) : | |
| ValidES3ReadFormatType(context, currentInternalFormat, format, type); | |
| if (!(currentFormat == format && currentType == type) && !validReadFormat) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| GLenum sizedInternalFormat = IsSizedInternalFormat(format) ? format | |
| : GetSizedInternalFormat(format, type); | |
| GLsizei outputPitch = GetRowPitch(sizedInternalFormat, type, width, context->getPackAlignment()); | |
| // sized query sanity check | |
| if (bufSize) | |
| { | |
| int requiredSize = outputPitch * height; | |
| if (requiredSize > *bufSize) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| } | |
| return true; | |
| } | |
| bool ValidateBeginQuery(gl::Context *context, GLenum target, GLuint id) | |
| { | |
| if (!ValidQueryType(context, target)) | |
| { | |
| return gl::error(GL_INVALID_ENUM, false); | |
| } | |
| if (id == 0) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, 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->isQueryActive()) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| Query *queryObject = context->getQuery(id, true, target); | |
| // check that name was obtained with glGenQueries | |
| if (!queryObject) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| // check for type mismatch | |
| if (queryObject->getType() != target) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| return true; | |
| } | |
| bool ValidateEndQuery(gl::Context *context, GLenum target) | |
| { | |
| if (!ValidQueryType(context, target)) | |
| { | |
| return gl::error(GL_INVALID_ENUM, false); | |
| } | |
| const Query *queryObject = context->getActiveQuery(target); | |
| if (queryObject == NULL) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| if (!queryObject->isStarted()) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| return true; | |
| } | |
| static bool ValidateUniformCommonBase(gl::Context *context, GLenum targetUniformType, | |
| GLint location, GLsizei count, LinkedUniform **uniformOut) | |
| { | |
| if (count < 0) | |
| { | |
| return gl::error(GL_INVALID_VALUE, false); | |
| } | |
| gl::ProgramBinary *programBinary = context->getCurrentProgramBinary(); | |
| if (!programBinary) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| if (location == -1) | |
| { | |
| // Silently ignore the uniform command | |
| return false; | |
| } | |
| if (!programBinary->isValidUniformLocation(location)) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| LinkedUniform *uniform = programBinary->getUniformByLocation(location); | |
| // attempting to write an array to a non-array uniform is an INVALID_OPERATION | |
| if (uniform->elementCount() == 1 && count > 1) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, 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) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| LinkedUniform *uniform = NULL; | |
| if (!ValidateUniformCommonBase(context, uniformType, location, count, &uniform)) | |
| { | |
| return false; | |
| } | |
| GLenum targetBoolType = VariableBoolVectorType(uniformType); | |
| bool samplerUniformCheck = (IsSampler(uniform->type) && uniformType == GL_INT); | |
| if (!samplerUniformCheck && uniformType != uniform->type && targetBoolType != uniform->type) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, 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) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| if (transpose != GL_FALSE && context->getClientVersion() < 3) | |
| { | |
| return gl::error(GL_INVALID_VALUE, false); | |
| } | |
| LinkedUniform *uniform = NULL; | |
| if (!ValidateUniformCommonBase(context, matrixType, location, count, &uniform)) | |
| { | |
| return false; | |
| } | |
| if (uniform->type != matrixType) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| return true; | |
| } | |
| bool ValidateStateQuery(gl::Context *context, GLenum pname, GLenum *nativeType, unsigned int *numParams) | |
| { | |
| if (!context->getQueryParameterInfo(pname, nativeType, numParams)) | |
| { | |
| return gl::error(GL_INVALID_ENUM, false); | |
| } | |
| if (pname >= GL_DRAW_BUFFER0 && pname <= GL_DRAW_BUFFER15) | |
| { | |
| unsigned int colorAttachment = (pname - GL_DRAW_BUFFER0); | |
| if (colorAttachment >= context->getCaps().maxDrawBuffers) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, 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->getActiveSampler() >= context->getMaximumCombinedTextureImageUnits()) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| break; | |
| case GL_IMPLEMENTATION_COLOR_READ_TYPE: | |
| case GL_IMPLEMENTATION_COLOR_READ_FORMAT: | |
| { | |
| Framebuffer *framebuffer = context->getReadFramebuffer(); | |
| ASSERT(framebuffer); | |
| if (framebuffer->completeness() != GL_FRAMEBUFFER_COMPLETE) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| FramebufferAttachment *attachment = framebuffer->getReadColorbuffer(); | |
| if (!attachment) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, 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)) | |
| { | |
| return gl::error(GL_INVALID_ENUM, false); | |
| } | |
| if (level < 0 || xoffset < 0 || yoffset < 0 || zoffset < 0 || width < 0 || height < 0) | |
| { | |
| return gl::error(GL_INVALID_VALUE, false); | |
| } | |
| if (std::numeric_limits<GLsizei>::max() - xoffset < width || std::numeric_limits<GLsizei>::max() - yoffset < height) | |
| { | |
| return gl::error(GL_INVALID_VALUE, false); | |
| } | |
| if (border != 0) | |
| { | |
| return gl::error(GL_INVALID_VALUE, false); | |
| } | |
| if (!ValidMipLevel(context, target, level)) | |
| { | |
| return gl::error(GL_INVALID_VALUE, false); | |
| } | |
| gl::Framebuffer *framebuffer = context->getReadFramebuffer(); | |
| if (framebuffer->completeness() != GL_FRAMEBUFFER_COMPLETE) | |
| { | |
| return gl::error(GL_INVALID_FRAMEBUFFER_OPERATION, false); | |
| } | |
| if (context->getReadFramebufferHandle() != 0 && framebuffer->getSamples() != 0) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| const gl::Caps &caps = context->getCaps(); | |
| gl::Texture *texture = NULL; | |
| GLenum textureInternalFormat = GL_NONE; | |
| bool textureCompressed = false; | |
| bool textureIsDepth = false; | |
| GLint textureLevelWidth = 0; | |
| GLint textureLevelHeight = 0; | |
| GLint textureLevelDepth = 0; | |
| GLuint maxDimension = 0; | |
| switch (target) | |
| { | |
| case GL_TEXTURE_2D: | |
| { | |
| gl::Texture2D *texture2d = context->getTexture2D(); | |
| if (texture2d) | |
| { | |
| textureInternalFormat = texture2d->getInternalFormat(level); | |
| textureCompressed = texture2d->isCompressed(level); | |
| textureIsDepth = texture2d->isDepth(level); | |
| textureLevelWidth = texture2d->getWidth(level); | |
| textureLevelHeight = texture2d->getHeight(level); | |
| textureLevelDepth = 1; | |
| texture = texture2d; | |
| maxDimension = caps.max2DTextureSize; | |
| } | |
| } | |
| break; | |
| case GL_TEXTURE_CUBE_MAP_POSITIVE_X: | |
| case GL_TEXTURE_CUBE_MAP_NEGATIVE_X: | |
| case GL_TEXTURE_CUBE_MAP_POSITIVE_Y: | |
| case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: | |
| case GL_TEXTURE_CUBE_MAP_POSITIVE_Z: | |
| case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: | |
| { | |
| gl::TextureCubeMap *textureCube = context->getTextureCubeMap(); | |
| if (textureCube) | |
| { | |
| textureInternalFormat = textureCube->getInternalFormat(target, level); | |
| textureCompressed = textureCube->isCompressed(target, level); | |
| textureIsDepth = false; | |
| textureLevelWidth = textureCube->getWidth(target, level); | |
| textureLevelHeight = textureCube->getHeight(target, level); | |
| textureLevelDepth = 1; | |
| texture = textureCube; | |
| maxDimension = caps.maxCubeMapTextureSize; | |
| } | |
| } | |
| break; | |
| case GL_TEXTURE_2D_ARRAY: | |
| { | |
| gl::Texture2DArray *texture2dArray = context->getTexture2DArray(); | |
| if (texture2dArray) | |
| { | |
| textureInternalFormat = texture2dArray->getInternalFormat(level); | |
| textureCompressed = texture2dArray->isCompressed(level); | |
| textureIsDepth = texture2dArray->isDepth(level); | |
| textureLevelWidth = texture2dArray->getWidth(level); | |
| textureLevelHeight = texture2dArray->getHeight(level); | |
| textureLevelDepth = texture2dArray->getLayers(level); | |
| texture = texture2dArray; | |
| maxDimension = caps.max2DTextureSize; | |
| } | |
| } | |
| break; | |
| case GL_TEXTURE_3D: | |
| { | |
| gl::Texture3D *texture3d = context->getTexture3D(); | |
| if (texture3d) | |
| { | |
| textureInternalFormat = texture3d->getInternalFormat(level); | |
| textureCompressed = texture3d->isCompressed(level); | |
| textureIsDepth = texture3d->isDepth(level); | |
| textureLevelWidth = texture3d->getWidth(level); | |
| textureLevelHeight = texture3d->getHeight(level); | |
| textureLevelDepth = texture3d->getDepth(level); | |
| texture = texture3d; | |
| maxDimension = caps.max3DTextureSize; | |
| } | |
| } | |
| break; | |
| default: | |
| return gl::error(GL_INVALID_ENUM, false); | |
| } | |
| if (!texture) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| if (texture->isImmutable() && !isSubImage) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| if (textureIsDepth) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| if (textureCompressed) | |
| { | |
| GLint blockWidth = GetCompressedBlockWidth(textureInternalFormat); | |
| GLint blockHeight = GetCompressedBlockHeight(textureInternalFormat); | |
| if (((width % blockWidth) != 0 && width != textureLevelWidth) || | |
| ((height % blockHeight) != 0 && height != textureLevelHeight)) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| } | |
| if (isSubImage) | |
| { | |
| if (xoffset + width > textureLevelWidth || | |
| yoffset + height > textureLevelHeight || | |
| zoffset >= textureLevelDepth) | |
| { | |
| return gl::error(GL_INVALID_VALUE, false); | |
| } | |
| } | |
| else | |
| { | |
| if (IsCubemapTextureTarget(target) && width != height) | |
| { | |
| return gl::error(GL_INVALID_VALUE, false); | |
| } | |
| if (!IsValidInternalFormat(internalformat, context->getExtensions(), context->getClientVersion())) | |
| { | |
| return gl::error(GL_INVALID_ENUM, false); | |
| } | |
| int maxLevelDimension = (maxDimension >> level); | |
| if (static_cast<int>(width) > maxLevelDimension || static_cast<int>(height) > maxLevelDimension) | |
| { | |
| return gl::error(GL_INVALID_VALUE, false); | |
| } | |
| } | |
| *textureFormatOut = textureInternalFormat; | |
| return true; | |
| } | |
| static bool ValidateDrawBase(const gl::Context *context, GLenum mode, GLsizei count) | |
| { | |
| 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: | |
| return gl::error(GL_INVALID_ENUM, false); | |
| } | |
| if (count < 0) | |
| { | |
| return gl::error(GL_INVALID_VALUE, false); | |
| } | |
| // Check for mapped buffers | |
| if (context->hasMappedBuffer(GL_ARRAY_BUFFER)) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| const gl::DepthStencilState &depthStencilState = context->getDepthStencilState(); | |
| if (depthStencilState.stencilWritemask != depthStencilState.stencilBackWritemask || | |
| context->getStencilRef() != context->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."); | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| const gl::Framebuffer *fbo = context->getDrawFramebuffer(); | |
| if (!fbo || fbo->completeness() != GL_FRAMEBUFFER_COMPLETE) | |
| { | |
| return gl::error(GL_INVALID_FRAMEBUFFER_OPERATION, false); | |
| } | |
| // No-op if zero count | |
| return (count > 0); | |
| } | |
| bool ValidateDrawArrays(const gl::Context *context, GLenum mode, GLint first, GLsizei count) | |
| { | |
| if (first < 0) | |
| { | |
| return gl::error(GL_INVALID_VALUE, false); | |
| } | |
| gl::TransformFeedback *curTransformFeedback = context->getCurrentTransformFeedback(); | |
| if (curTransformFeedback && curTransformFeedback->isStarted() && !curTransformFeedback->isPaused() && | |
| curTransformFeedback->getDrawMode() != mode) | |
| { | |
| // It is an invalid operation to call DrawArrays or DrawArraysInstanced with a draw mode | |
| // that does not match the current transform feedback object's draw mode (if transform feedback | |
| // is active), (3.0.2, section 2.14, pg 86) | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| if (!ValidateDrawBase(context, mode, count)) | |
| { | |
| return false; | |
| } | |
| return true; | |
| } | |
| bool ValidateDrawArraysInstanced(const gl::Context *context, GLenum mode, GLint first, GLsizei count, GLsizei primcount) | |
| { | |
| if (primcount < 0) | |
| { | |
| return gl::error(GL_INVALID_VALUE, false); | |
| } | |
| if (!ValidateDrawArrays(context, mode, first, count)) | |
| { | |
| return false; | |
| } | |
| // No-op if zero primitive count | |
| return (primcount > 0); | |
| } | |
| bool ValidateDrawElements(const gl::Context *context, GLenum mode, GLsizei count, GLenum type, const GLvoid* indices) | |
| { | |
| switch (type) | |
| { | |
| case GL_UNSIGNED_BYTE: | |
| case GL_UNSIGNED_SHORT: | |
| break; | |
| case GL_UNSIGNED_INT: | |
| if (!context->getExtensions().elementIndexUint) | |
| { | |
| return gl::error(GL_INVALID_ENUM, false); | |
| } | |
| break; | |
| default: | |
| return gl::error(GL_INVALID_ENUM, false); | |
| } | |
| gl::TransformFeedback *curTransformFeedback = context->getCurrentTransformFeedback(); | |
| if (curTransformFeedback && curTransformFeedback->isStarted() && !curTransformFeedback->isPaused()) | |
| { | |
| // It is an invalid operation to call DrawElements, DrawRangeElements or DrawElementsInstanced | |
| // while transform feedback is active, (3.0.2, section 2.14, pg 86) | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| // Check for mapped buffers | |
| if (context->hasMappedBuffer(GL_ELEMENT_ARRAY_BUFFER)) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| if (!ValidateDrawBase(context, mode, count)) | |
| { | |
| return false; | |
| } | |
| return true; | |
| } | |
| bool ValidateDrawElementsInstanced(const gl::Context *context, GLenum mode, GLsizei count, GLenum type, | |
| const GLvoid *indices, GLsizei primcount) | |
| { | |
| if (primcount < 0) | |
| { | |
| return gl::error(GL_INVALID_VALUE, false); | |
| } | |
| if (!ValidateDrawElements(context, mode, count, type, indices)) | |
| { | |
| return false; | |
| } | |
| // No-op zero primitive count | |
| return (primcount > 0); | |
| } | |
| bool ValidateFramebufferTextureBase(const gl::Context *context, GLenum target, GLenum attachment, | |
| GLuint texture, GLint level) | |
| { | |
| if (!ValidFramebufferTarget(target)) | |
| { | |
| return gl::error(GL_INVALID_ENUM, false); | |
| } | |
| if (!ValidateAttachmentTarget(context, attachment)) | |
| { | |
| return false; | |
| } | |
| if (texture != 0) | |
| { | |
| gl::Texture *tex = context->getTexture(texture); | |
| if (tex == NULL) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| if (level < 0) | |
| { | |
| return gl::error(GL_INVALID_VALUE, false); | |
| } | |
| } | |
| const gl::Framebuffer *framebuffer = context->getTargetFramebuffer(target); | |
| GLuint framebufferHandle = context->getTargetFramebufferHandle(target); | |
| if (framebufferHandle == 0 || !framebuffer) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| return true; | |
| } | |
| bool ValidateFramebufferTexture2D(const gl::Context *context, GLenum target, GLenum attachment, | |
| GLenum textarget, GLuint texture, GLint level) | |
| { | |
| // Attachments are required to be bound to level 0 in ES2 | |
| if (context->getClientVersion() < 3 && level != 0) | |
| { | |
| return gl::error(GL_INVALID_VALUE, 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)) | |
| { | |
| return gl::error(GL_INVALID_VALUE, false); | |
| } | |
| if (tex->getTarget() != GL_TEXTURE_2D) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| gl::Texture2D *tex2d = static_cast<gl::Texture2D *>(tex); | |
| if (tex2d->isCompressed(level)) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, 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)) | |
| { | |
| return gl::error(GL_INVALID_VALUE, false); | |
| } | |
| if (tex->getTarget() != GL_TEXTURE_CUBE_MAP) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| gl::TextureCubeMap *texcube = static_cast<gl::TextureCubeMap *>(tex); | |
| if (texcube->isCompressed(textarget, level)) | |
| { | |
| return gl::error(GL_INVALID_OPERATION, false); | |
| } | |
| } | |
| break; | |
| default: | |
| return gl::error(GL_INVALID_ENUM, false); | |
| } | |
| } | |
| return true; | |
| } | |
| } |