| #include "precompiled.h" |
| // |
| // Copyright (c) 2013 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/Context.h" |
| #include "libGLESv2/Texture.h" |
| #include "libGLESv2/Framebuffer.h" |
| #include "libGLESv2/Renderbuffer.h" |
| #include "libGLESv2/formatutils.h" |
| #include "libGLESv2/main.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; |
| } |
| } |
| |
| 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 ValidMipLevel(const gl::Context *context, GLenum target, GLint level) |
| { |
| int maxLevel = 0; |
| switch (target) |
| { |
| case GL_TEXTURE_2D: maxLevel = context->getMaximum2DTextureLevel(); 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: maxLevel = context->getMaximumCubeTextureLevel(); break; |
| case GL_TEXTURE_3D: maxLevel = context->getMaximum3DTextureLevel(); break; |
| case GL_TEXTURE_2D_ARRAY: maxLevel = context->getMaximum2DArrayTextureLevel(); break; |
| default: UNREACHABLE(); |
| } |
| |
| return level < maxLevel; |
| } |
| |
| 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->supportsNonPower2Texture() && (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) |
| { |
| GLuint clientVersion = context->getClientVersion(); |
| if (!IsFormatCompressed(internalFormat, clientVersion)) |
| { |
| return false; |
| } |
| |
| GLint blockWidth = GetCompressedBlockWidth(internalFormat, clientVersion); |
| GLint blockHeight = GetCompressedBlockHeight(internalFormat, clientVersion); |
| 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 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)) |
| { |
| 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, context->getClientVersion())) |
| { |
| return gl::error(GL_INVALID_ENUM, false); |
| } |
| |
| GLenum componentType = gl::GetComponentType(internalformat, context->getClientVersion()); |
| if ((componentType == GL_UNSIGNED_INT || componentType == GL_INT) && samples > 0) |
| { |
| return gl::error(GL_INVALID_OPERATION, false); |
| } |
| |
| if (!gl::IsColorRenderingSupported(internalformat, context) && |
| !gl::IsDepthRenderingSupported(internalformat, context) && |
| !gl::IsStencilRenderingSupported(internalformat, context)) |
| { |
| return gl::error(GL_INVALID_ENUM, false); |
| } |
| |
| if (std::max(width, height) > context->getMaximumRenderbufferDimension()) |
| { |
| 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 (attachment >= GL_COLOR_ATTACHMENT0_EXT && attachment <= GL_COLOR_ATTACHMENT15_EXT) |
| { |
| const unsigned int colorAttachment = (attachment - GL_COLOR_ATTACHMENT0_EXT); |
| |
| if (colorAttachment >= context->getMaximumRenderTargets()) |
| { |
| return gl::error(GL_INVALID_VALUE, false); |
| } |
| } |
| else |
| { |
| switch (attachment) |
| { |
| case GL_DEPTH_ATTACHMENT: |
| break; |
| 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); |
| } |
| } |
| |
| // [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::Renderbuffer *readBuffer, gl::Renderbuffer *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; |
| |
| GLuint clientVersion = context->getClientVersion(); |
| |
| if (mask & GL_COLOR_BUFFER_BIT) |
| { |
| gl::Renderbuffer *readColorBuffer = readFramebuffer->getReadColorbuffer(); |
| gl::Renderbuffer *drawColorBuffer = drawFramebuffer->getFirstColorbuffer(); |
| |
| if (readColorBuffer && drawColorBuffer) |
| { |
| GLenum readInternalFormat = readColorBuffer->getActualFormat(); |
| GLenum readComponentType = gl::GetComponentType(readInternalFormat, clientVersion); |
| |
| 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, clientVersion); |
| |
| // 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)) |
| { |
| if (drawFramebuffer->getColorbufferType(colorAttachment) != GL_TEXTURE_2D && |
| drawFramebuffer->getColorbufferType(colorAttachment) != GL_RENDERBUFFER) |
| { |
| return gl::error(GL_INVALID_OPERATION, false); |
| } |
| |
| if (drawFramebuffer->getColorbuffer(colorAttachment)->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::Renderbuffer *readDepthBuffer = readFramebuffer->getDepthbuffer(); |
| gl::Renderbuffer *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::Renderbuffer *readStencilBuffer = readFramebuffer->getStencilbuffer(); |
| gl::Renderbuffer *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->supportsTextureFilterAnisotropy()) |
| { |
| 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: |
| UNIMPLEMENTED(); |
| 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); |
| } |
| } |
| |
| } |