kc3-lang/angle/src/libGLESv2/renderer/d3d/HLSLCompiler.cpp

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• Author : Geoff Lang
  Date : 2014-09-23 13:39:31
  Hash : f7ed7054
  Message : Move the code that writes the temporary shader file to the shader compiler. BUG=angle:755 Change-Id: I5fdc3ae112ea3f59694a22da6199b99a568ed0a1 Reviewed-on: https://chromium-review.googlesource.com/219530 Reviewed-by: Brandon Jones <bajones@chromium.org> Tested-by: Geoff Lang <geofflang@chromium.org>

• src/libGLESv2/renderer/d3d/HLSLCompiler.cpp

• //
  // Copyright 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.
  //
  
  #include "libGLESv2/renderer/d3d/HLSLCompiler.h"
  #include "libGLESv2/Program.h"
  #include "libGLESv2/main.h"
  
  #include "common/utilities.h"
  
  #include "third_party/trace_event/trace_event.h"
  
  namespace rx
  {
  
  CompileConfig::CompileConfig()
      : flags(0),
        name()
  {
  }
  
  CompileConfig::CompileConfig(UINT flags, const std::string &name)
      : flags(flags),
        name(name)
  {
  }
  
  HLSLCompiler::HLSLCompiler()
      : mD3DCompilerModule(NULL),
        mD3DCompileFunc(NULL)
  {
  }
  
  HLSLCompiler::~HLSLCompiler()
  {
      release();
  }
  
  bool HLSLCompiler::initialize()
  {
      TRACE_EVENT0("gpu", "initializeCompiler");
  #if defined(ANGLE_PRELOADED_D3DCOMPILER_MODULE_NAMES)
      // Find a D3DCompiler module that had already been loaded based on a predefined list of versions.
      static const char *d3dCompilerNames[] = ANGLE_PRELOADED_D3DCOMPILER_MODULE_NAMES;
  
      for (size_t i = 0; i < ArraySize(d3dCompilerNames); ++i)
      {
          if (GetModuleHandleExA(0, d3dCompilerNames[i], &mD3DCompilerModule))
          {
              break;
          }
      }
  #endif  // ANGLE_PRELOADED_D3DCOMPILER_MODULE_NAMES
  
      if (!mD3DCompilerModule)
      {
          // Load the version of the D3DCompiler DLL associated with the Direct3D version ANGLE was built with.
          mD3DCompilerModule = LoadLibrary(D3DCOMPILER_DLL);
      }
  
      if (!mD3DCompilerModule)
      {
          ERR("No D3D compiler module found - aborting!\n");
          return false;
      }
  
      mD3DCompileFunc = reinterpret_cast<pD3DCompile>(GetProcAddress(mD3DCompilerModule, "D3DCompile"));
      ASSERT(mD3DCompileFunc);
  
      return mD3DCompileFunc != NULL;
  }
  
  void HLSLCompiler::release()
  {
      if (mD3DCompilerModule)
      {
          FreeLibrary(mD3DCompilerModule);
          mD3DCompilerModule = NULL;
          mD3DCompileFunc = NULL;
      }
  }
  
  ID3DBlob *HLSLCompiler::compileToBinary(gl::InfoLog &infoLog, const std::string &hlsl, const std::string &profile,
                                          const std::vector<CompileConfig> &configs) const
  {
      ASSERT(mD3DCompilerModule && mD3DCompileFunc);
  
      if (gl::perfActive())
      {
          std::string sourcePath = getTempPath();
          std::string sourceText = FormatString("#line 2 \"%s\"\n\n%s", sourcePath.c_str(), hlsl.c_str());
          writeFile(sourcePath.c_str(), sourceText.c_str(), sourceText.size());
      }
  
      for (size_t i = 0; i < configs.size(); ++i)
      {
          ID3DBlob *errorMessage = NULL;
          ID3DBlob *binary = NULL;
  
          HRESULT result = mD3DCompileFunc(hlsl.c_str(), hlsl.length(), gl::g_fakepath, NULL, NULL, "main", profile.c_str(),
                                           configs[i].flags, 0, &binary, &errorMessage);
  
          if (errorMessage)
          {
              const char *message = (const char*)errorMessage->GetBufferPointer();
  
              infoLog.appendSanitized(message);
              TRACE("\n%s", hlsl);
              TRACE("\n%s", message);
  
              SafeRelease(errorMessage);
          }
  
          if (SUCCEEDED(result))
          {
              return binary;
          }
          else
          {
              if (result == E_OUTOFMEMORY)
              {
                  return gl::error<ID3DBlob*>(GL_OUT_OF_MEMORY, NULL);
              }
  
              infoLog.append("Warning: D3D shader compilation failed with %s flags.", configs[i].name.c_str());
  
              if (i + 1 < configs.size())
              {
                  infoLog.append(" Retrying with %s.\n", configs[i + 1].name.c_str());
              }
          }
      }
  
      return NULL;
  }
  
  }