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

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• Hash : eaa71709
  Author :
  Date : 2022-10-14T11:47:07
  

  Vulkan: s/ContextVk/Context in pipeline creation
  
  With VK_EXT_graphics_pipeline_library, pipeline creation may happen on a
  thread.  This change prepares the interface such that only a vk::Context
  is needed, instead of ContextVk.
  
  Bug: angleproject:7369
  Change-Id: Ib7e9e7e140e27a4af71bffee069c88e3d7f47dfa
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3956935
  Reviewed-by: Yuxin Hu <yuxinhu@google.com>
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  

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• src/libANGLE/renderer/vulkan/ShaderVk.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.
  //
  // ShaderVk.cpp:
  //    Implements the class methods for ShaderVk.
  //
  
  #include "libANGLE/renderer/vulkan/ShaderVk.h"
  
  #include "common/debug.h"
  #include "libANGLE/Context.h"
  #include "libANGLE/Display.h"
  #include "libANGLE/renderer/vulkan/ContextVk.h"
  
  namespace rx
  {
  
  ShaderVk::ShaderVk(const gl::ShaderState &state) : ShaderImpl(state) {}
  
  ShaderVk::~ShaderVk() {}
  
  std::shared_ptr<WaitableCompileEvent> ShaderVk::compile(const gl::Context *context,
                                                          gl::ShCompilerInstance *compilerInstance,
                                                          ShCompileOptions *options)
  {
      ContextVk *contextVk = vk::GetImpl(context);
  
      if (context->isWebGL())
      {
          // Only WebGL requires initialization of local variables, others don't.
          // Extra initialization in spirv shader may affect performance.
          options->initializeUninitializedLocals = true;
  
          // WebGL shaders may contain OOB array accesses which in turn cause undefined behavior,
          // which may result in security issues. See https://crbug.com/1189110.
          options->clampIndirectArrayBounds = true;
  
          if (mState.getShaderType() != gl::ShaderType::Compute)
          {
              options->initOutputVariables = true;
          }
      }
  
      // robustBufferAccess on Vulkan doesn't support bound check on shader local variables
      // but the GL_EXT_robustness does support.
      // Enable the flag clampIndirectArrayBounds to ensure out of bounds local variable writes in
      // shaders are protected when the context has GL_EXT_robustness enabled
      if (contextVk->getShareGroup()->hasAnyContextWithRobustness())
      {
          options->clampIndirectArrayBounds = true;
      }
  
      if (contextVk->getFeatures().clampPointSize.enabled)
      {
          options->clampPointSize = true;
      }
  
      if (contextVk->getFeatures().emulateAdvancedBlendEquations.enabled)
      {
          options->addAdvancedBlendEquationsEmulation = true;
      }
  
      if (contextVk->emulateSeamfulCubeMapSampling())
      {
          options->emulateSeamfulCubeMapSampling = true;
      }
  
      if (!contextVk->getFeatures().enablePrecisionQualifiers.enabled)
      {
          options->ignorePrecisionQualifiers = true;
      }
  
      if (contextVk->getFeatures().forceFragmentShaderPrecisionHighpToMediump.enabled)
      {
          options->forceShaderPrecisionHighpToMediump = true;
      }
  
      // Let compiler use specialized constant for pre-rotation.
      if (!contextVk->getFeatures().preferDriverUniformOverSpecConst.enabled)
      {
          options->useSpecializationConstant = true;
      }
  
      if (!contextVk->getFeatures().supportsDepthClipControl.enabled)
      {
          options->addVulkanDepthCorrection = true;
      }
  
      if (contextVk->getFeatures().supportsTransformFeedbackExtension.enabled)
      {
          options->addVulkanXfbExtensionSupportCode = true;
      }
      else if (mState.getShaderType() == gl::ShaderType::Vertex &&
               contextVk->getFeatures().emulateTransformFeedback.enabled)
      {
          options->addVulkanXfbEmulationSupportCode = true;
      }
  
      if (contextVk->getFeatures().generateSPIRVThroughGlslang.enabled)
      {
          options->generateSpirvThroughGlslang = true;
      }
  
      if (contextVk->getFeatures().roundOutputAfterDithering.enabled)
      {
          options->roundOutputAfterDithering = true;
      }
  
      if (contextVk->getFeatures().precisionSafeDivision.enabled)
      {
          options->precisionSafeDivision = true;
      }
  
      if (contextVk->getExtensions().shaderPixelLocalStorageANGLE)
      {
          options->pls.type = contextVk->getNativePixelLocalStorageType();
          if (contextVk->getExtensions().shaderPixelLocalStorageCoherentANGLE)
          {
              if (options->pls.type == ShPixelLocalStorageType::FramebufferFetch)
              {
                  options->pls.fragmentSynchronizationType = ShFragmentSynchronizationType::Automatic;
              }
              else
              {
                  ASSERT(contextVk->getFeatures().supportsFragmentShaderPixelInterlock.enabled);
                  // GL_ARB_fragment_shader_interlock compiles to SPV_EXT_fragment_shader_interlock in
                  // both Vulkan Glslang and our own backend.
                  options->pls.fragmentSynchronizationType =
                      ShFragmentSynchronizationType::FragmentShaderInterlock_ARB_GL;
              }
          }
      }
  
      return compileImpl(context, compilerInstance, mState.getSource(), options);
  }
  
  std::string ShaderVk::getDebugInfo() const
  {
      return mState.getCompiledBinary().empty() ? "" : "<binary blob>";
  }
  
  }  // namespace rx
  

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