kc3-lang/angle/src/libANGLE/renderer/vulkan/GlslangWrapperVk.cpp

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• Hash : f1f082e1
  Author :
  Date : 2020-01-17T14:53:38
  

  Vulkan: Set varying location & xfb decorations in SPIR-V
  
  The shader translator outputs arbitrary location indices.  Once compiled
  by glslang, the SPIR-V transformer modifies these decorations.  If the
  transform feedback extension is used, it will also add the relevant
  decorations to the varyings that are captured.
  
  Bug: angleproject:3394
  Change-Id: I5ecafd0536408612a5d4b920dbabbfabe650657c
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2008468
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/renderer/vulkan/GlslangWrapperVk.cpp

• //
  // Copyright 2016 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.
  //
  // GlslangWrapperVk: Wrapper for Vulkan's glslang compiler.
  //
  
  #include "libANGLE/renderer/vulkan/GlslangWrapperVk.h"
  
  #include "libANGLE/renderer/vulkan/ContextVk.h"
  #include "libANGLE/renderer/vulkan/vk_cache_utils.h"
  
  namespace rx
  {
  namespace
  {
  angle::Result ErrorHandler(vk::Context *context, GlslangError)
  {
      ANGLE_VK_CHECK(context, false, VK_ERROR_INVALID_SHADER_NV);
      return angle::Result::Stop;
  }
  
  GlslangSourceOptions CreateSourceOptions(const angle::FeaturesVk &features)
  {
      GlslangSourceOptions options;
      options.uniformsAndXfbDescriptorSetIndex = kUniformsAndXfbDescriptorSetIndex;
      options.textureDescriptorSetIndex        = kTextureDescriptorSetIndex;
      options.shaderResourceDescriptorSetIndex = kShaderResourceDescriptorSetIndex;
      options.driverUniformsDescriptorSetIndex = kDriverUniformsDescriptorSetIndex;
      options.xfbBindingIndexStart             = kXfbBindingIndexStart;
      options.useOldRewriteStructSamplers      = features.forceOldRewriteStructSamplers.enabled;
      options.supportsTransformFeedbackExtension =
          features.supportsTransformFeedbackExtension.enabled;
      options.emulateTransformFeedback = features.emulateTransformFeedback.enabled;
      options.emulateBresenhamLines    = features.basicGLLineRasterization.enabled;
      return options;
  }
  }  // namespace
  
  // static
  void GlslangWrapperVk::GetShaderSource(const angle::FeaturesVk &features,
                                         const gl::ProgramState &programState,
                                         const gl::ProgramLinkedResources &resources,
                                         gl::ShaderMap<std::string> *shaderSourcesOut,
                                         ShaderInterfaceVariableInfoMap *variableInfoMapOut)
  {
      GlslangGetShaderSource(CreateSourceOptions(features), programState, resources, shaderSourcesOut,
                             variableInfoMapOut);
  }
  
  // static
  angle::Result GlslangWrapperVk::GetShaderCode(vk::Context *context,
                                                const gl::Caps &glCaps,
                                                const gl::ShaderMap<std::string> &shaderSources,
                                                const ShaderInterfaceVariableInfoMap &variableInfoMap,
                                                gl::ShaderMap<std::vector<uint32_t>> *shaderCodeOut)
  {
      return GlslangGetShaderSpirvCode(
          [context](GlslangError error) { return ErrorHandler(context, error); }, glCaps,
          shaderSources, variableInfoMap, shaderCodeOut);
  }
  }  // namespace rx
  

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