kc3-lang/angle/src/libANGLE/renderer/metal/mtl_glslang_utils.h

• Show log

  Commit

• Hash : 776c6015
  Author :
  Date : 2021-02-26T00:00:57
  

  Vulkan: Call glslang at compile time
  
  With this change, the ANGLE translator immediately compiles the
  generated GLSL into SPIR-V with glslang and discards the source.  This
  is in preparation for generating SPIR-V directly, by making the frontend
  and backend already able to digest it.
  
  This change also allows the expensive glslang calls to be parallelized,
  improving the following perf test by about 20%:
  
      LinkProgramBenchmark.Run/vulkan_compile_and_link_multi_thread
  
  Previously, the test was run as such in the Vulkan backend:
  
      Main           Thread 1          Thread 2
      Compile1 --->
      Compile2 --------------------->
                    Translator        Translator
               <---
               <---------------------
      Link
  
      glslang
       for
        shader1
  
      glslang
       for
        shader2
  
      Done
  
  With this change, it is run as such:
  
      Main           Thread 1          Thread 2
      Compile1 --->
      Compile2 --------------------->
                    Translator        Translator
                     glslang           glslang
               <---
               <---------------------
      Link
      Done
  
  glslang_wrapper_utils no longer interacts with glslang! A rename will
  follow.
  
  Bug: angleproject:4889
  Change-Id: If4303e8ba0ba43b1a2f47f8c0a9133d0bee1a19a
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2721195
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Tim Van Patten <timvp@google.com>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

Download

• src/libANGLE/renderer/metal/mtl_glslang_utils.h

• //
  // Copyright 2019 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.
  //
  // GlslangUtils: Wrapper for Khronos's glslang compiler.
  //
  
  #ifndef LIBANGLE_RENDERER_METAL_GLSLANGWRAPPER_H_
  #define LIBANGLE_RENDERER_METAL_GLSLANGWRAPPER_H_
  
  #include "libANGLE/Caps.h"
  #include "libANGLE/Context.h"
  #include "libANGLE/renderer/ProgramImpl.h"
  #include "libANGLE/renderer/glslang_wrapper_utils.h"
  #include "libANGLE/renderer/metal/mtl_common.h"
  
  namespace rx
  {
  namespace mtl
  {
  
  struct SamplerBinding
  {
      uint32_t textureBinding = 0;
      uint32_t samplerBinding = 0;
  };
  
  struct TranslatedShaderInfo
  {
      void reset();
  
      // Translated Metal source code
      std::string metalShaderSource;
      // Metal library compiled from source code above. Used by ProgramMtl.
      AutoObjCPtr<id<MTLLibrary>> metalLibrary;
  
      std::array<SamplerBinding, kMaxGLSamplerBindings> actualSamplerBindings;
      std::array<uint32_t, kMaxGLUBOBindings> actualUBOBindings;
      std::array<uint32_t, kMaxShaderXFBs> actualXFBBindings;
      bool hasUBOArgumentBuffer;
  };
  
  // spirvBlobsOut is the SPIR-V code per shader stage.
  void GlslangGetShaderSpirvCode(const gl::ProgramState &programState,
                                 const gl::ProgramLinkedResources &resources,
                                 gl::ShaderMap<const angle::spirv::Blob *> *spirvBlobsOut,
                                 ShaderInterfaceVariableInfoMap *variableInfoMapOut,
                                 ShaderInterfaceVariableInfoMap *xfbOnlyVSVariableInfoMapOut);
  
  angle::Result GlslangTransformSpirvCode(const gl::ShaderBitSet &linkedShaderStages,
                                          const gl::ShaderMap<const angle::spirv::Blob *> &spirvBlobs,
                                          bool isTransformFeedbackEnabled,
                                          const ShaderInterfaceVariableInfoMap &variableInfoMap,
                                          gl::ShaderMap<angle::spirv::Blob> *shaderCodeOut);
  
  // Translate from SPIR-V code to Metal shader source code.
  // - spirvShaderCode is SPIRV code per shader stage when XFB emulation is turned off.
  // - xfbOnlySpirvCode is  vertex shader's SPIRV code when XFB emulation is turned on.
  // - mslShaderInfoOut is result MSL info per shader stage when XFB emulation is turned off.
  // - mslXfbOnlyShaderInfoOut is result vertex shader's MSL info when XFB emulation is turned on.
  angle::Result SpirvCodeToMsl(Context *context,
                               const gl::ProgramState &programState,
                               const ShaderInterfaceVariableInfoMap &xfbVSVariableInfoMap,
                               gl::ShaderMap<angle::spirv::Blob> *spirvShaderCode,
                               angle::spirv::Blob *xfbOnlySpirvCode /** nullable */,
                               gl::ShaderMap<TranslatedShaderInfo> *mslShaderInfoOut,
                               TranslatedShaderInfo *mslXfbOnlyShaderInfoOut /** nullable */);
  
  }  // namespace mtl
  }  // namespace rx
  
  #endif /* LIBANGLE_RENDERER_METAL_GLSLANGWRAPPER_H_ */
  

Download