kc3-lang/angle/src/libANGLE/renderer/d3d/d3d9/ShaderCache.h

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• Hash : 9d737966
  Author :
  Date : 2019-08-14T12:25:12
  

  Standardize copyright notices to project style
  
  For all "ANGLE Project" copyrights, standardize to the format specified
  by the style guide. Changes:
  - "Copyright (c)" and "Copyright(c)" changed to just "Copyright".
  - Removed the second half of date ranges ("Y1Y1-Y2Y2"->"Y1Y1").
  - Fixed a small number of files that had no copyright date using the
    initial commit year from the version control history.
  - Fixed one instance of copyright being "The ANGLE Project" rather than
    "The ANGLE Project Authors"
  
  These changes are applied both to the copyright of source file, and
  where applicable to copyright statements that are generated by
  templates.
  
  BUG=angleproject:3811
  
  Change-Id: I973dd65e4ef9deeba232d5be74c768256a0eb2e5
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1754397
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/renderer/d3d/d3d9/ShaderCache.h

• //
  // Copyright 2012 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.
  //
  
  // ShaderCache: Defines rx::ShaderCache, a cache of Direct3D shader objects
  // keyed by their byte code.
  
  #ifndef LIBANGLE_RENDERER_D3D_D3D9_SHADERCACHE_H_
  #define LIBANGLE_RENDERER_D3D_D3D9_SHADERCACHE_H_
  
  #include "libANGLE/Error.h"
  
  #include "common/debug.h"
  #include "libANGLE/renderer/d3d/d3d9/Context9.h"
  
  #include <cstddef>
  #include <mutex>
  #include <string>
  #include <unordered_map>
  
  namespace rx
  {
  template <typename ShaderObject>
  class ShaderCache : angle::NonCopyable
  {
    public:
      ShaderCache() : mDevice(nullptr) {}
  
      ~ShaderCache()
      {
          // Call clear while the device is still valid.
          ASSERT(mMap.empty());
      }
  
      void initialize(IDirect3DDevice9 *device) { mDevice = device; }
  
      angle::Result create(d3d::Context *context,
                           const DWORD *function,
                           size_t length,
                           ShaderObject **outShaderObject)
      {
          std::lock_guard<std::mutex> lock(mMutex);
  
          std::string key(reinterpret_cast<const char *>(function), length);
          typename Map::iterator it = mMap.find(key);
          if (it != mMap.end())
          {
              it->second->AddRef();
              *outShaderObject = it->second;
              return angle::Result::Continue;
          }
  
          ShaderObject *shader;
          HRESULT result = createShader(function, &shader);
          ANGLE_TRY_HR(context, result, "Failed to create shader");
  
          // Random eviction policy.
          if (mMap.size() >= kMaxMapSize)
          {
              SafeRelease(mMap.begin()->second);
              mMap.erase(mMap.begin());
          }
  
          shader->AddRef();
          mMap[key] = shader;
  
          *outShaderObject = shader;
          return angle::Result::Continue;
      }
  
      void clear()
      {
          std::lock_guard<std::mutex> lock(mMutex);
  
          for (typename Map::iterator it = mMap.begin(); it != mMap.end(); ++it)
          {
              SafeRelease(it->second);
          }
  
          mMap.clear();
      }
  
    private:
      const static size_t kMaxMapSize = 100;
  
      HRESULT createShader(const DWORD *function, IDirect3DVertexShader9 **shader)
      {
          return mDevice->CreateVertexShader(function, shader);
      }
  
      HRESULT createShader(const DWORD *function, IDirect3DPixelShader9 **shader)
      {
          return mDevice->CreatePixelShader(function, shader);
      }
  
      typedef std::unordered_map<std::string, ShaderObject *> Map;
      Map mMap;
      std::mutex mMutex;
  
      IDirect3DDevice9 *mDevice;
  };
  
  typedef ShaderCache<IDirect3DVertexShader9> VertexShaderCache;
  typedef ShaderCache<IDirect3DPixelShader9> PixelShaderCache;
  
  }  // namespace rx
  
  #endif  // LIBANGLE_RENDERER_D3D_D3D9_SHADERCACHE_H_
  

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