diff options
Diffstat (limited to 'src/3rdparty/angle/src/libGLESv2/validationES.cpp')
| -rw-r--r-- | src/3rdparty/angle/src/libGLESv2/validationES.cpp | 1583 |
1 files changed, 1583 insertions, 0 deletions
diff --git a/src/3rdparty/angle/src/libGLESv2/validationES.cpp b/src/3rdparty/angle/src/libGLESv2/validationES.cpp new file mode 100644 index 0000000000..309c4daedb --- /dev/null +++ b/src/3rdparty/angle/src/libGLESv2/validationES.cpp @@ -0,0 +1,1583 @@ +#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 "libGLESv2/VertexArray.h" + +#include "common/mathutil.h" +#include "common/utilities.h" + +namespace gl +{ + +bool ValidCap(const Context *context, GLenum cap) +{ + switch (cap) + { + case GL_CULL_FACE: + case GL_POLYGON_OFFSET_FILL: + case GL_SAMPLE_ALPHA_TO_COVERAGE: + case GL_SAMPLE_COVERAGE: + case GL_SCISSOR_TEST: + case GL_STENCIL_TEST: + case GL_DEPTH_TEST: + case GL_BLEND: + case GL_DITHER: + return true; + case GL_PRIMITIVE_RESTART_FIXED_INDEX: + case GL_RASTERIZER_DISCARD: + return (context->getClientVersion() >= 3); + default: + return false; + } +} + +bool ValidTextureTarget(const Context *context, GLenum target) +{ + switch (target) + { + case GL_TEXTURE_2D: + case GL_TEXTURE_CUBE_MAP: + return true; + + case GL_TEXTURE_3D: + case GL_TEXTURE_2D_ARRAY: + return (context->getClientVersion() >= 3); + + default: + return false; + } +} + +// This function differs from ValidTextureTarget in that the target must be +// usable as the destination of a 2D operation-- so a cube face is valid, but +// GL_TEXTURE_CUBE_MAP is not. +// Note: duplicate of IsInternalTextureTarget +bool ValidTexture2DDestinationTarget(const Context *context, GLenum target) +{ + switch (target) + { + case GL_TEXTURE_2D: + case GL_TEXTURE_CUBE_MAP_POSITIVE_X: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_X: + case GL_TEXTURE_CUBE_MAP_POSITIVE_Y: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y: + case GL_TEXTURE_CUBE_MAP_POSITIVE_Z: + case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z: + return true; + case GL_TEXTURE_2D_ARRAY: + case GL_TEXTURE_3D: + return (context->getClientVersion() >= 3); + default: + return false; + } +} + +bool ValidFramebufferTarget(GLenum target) +{ + 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.renderable) + { + 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->getState().getRenderbufferId(); + 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) +{ + if (!ValidFramebufferTarget(target)) + { + return gl::error(GL_INVALID_ENUM, false); + } + + gl::Framebuffer *framebuffer = context->getState().getTargetFramebuffer(target); + GLuint framebufferHandle = context->getState().getTargetFramebuffer(target)->id(); + + 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->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) + { + 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->getState().getReadFramebuffer()->id() == context->getState().getDrawFramebuffer()->id()) + { + 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->getState().getReadFramebuffer(); + gl::Framebuffer *drawFramebuffer = context->getState().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->getState().getReadFramebuffer(); + ASSERT(framebuffer); + + if (framebuffer->completeness() != GL_FRAMEBUFFER_COMPLETE) + { + return gl::error(GL_INVALID_FRAMEBUFFER_OPERATION, false); + } + + if (context->getState().getReadFramebuffer()->id() != 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->getState().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->getState().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->getState().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->getState().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->getState().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->getState().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->getState().getReadFramebuffer(); + if (framebuffer->completeness() != GL_FRAMEBUFFER_COMPLETE) + { + return gl::error(GL_INVALID_FRAMEBUFFER_OPERATION, false); + } + + if (context->getState().getReadFramebuffer()->id() != 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->getState().getDepthStencilState(); + if (depthStencilState.stencilWritemask != depthStencilState.stencilBackWritemask || + context->getState().getStencilRef() != context->getState().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->getState().getDrawFramebuffer(); + if (!fbo || fbo->completeness() != GL_FRAMEBUFFER_COMPLETE) + { + return gl::error(GL_INVALID_FRAMEBUFFER_OPERATION, false); + } + + if (context->getState().getCurrentProgramId() == 0) + { + return gl::error(GL_INVALID_OPERATION, false); + } + + gl::ProgramBinary *programBinary = context->getState().getCurrentProgramBinary(); + if (!programBinary->validateSamplers(NULL)) + { + return gl::error(GL_INVALID_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->getState().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->getState().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); + } + + gl::VertexArray *vao = context->getState().getVertexArray(); + if (!indices && !vao->getElementArrayBuffer()) + { + 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->getState().getTargetFramebuffer(target); + GLuint framebufferHandle = context->getState().getTargetFramebuffer(target)->id(); + + 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; +} + +} |