kc3-lang/angle/src/libANGLE/MemoryProgramCache.h

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• Hash : c3abb7f1
  Author :
  Date : 2019-01-17T11:26:48
  

  Fix MultiDraw shaders when loaded from cache
  
  State updates that need to be done after linking vs. deserializing can
  get out of sync, as was the case for mDrawIDLocation (introduced in
  1bf18ce9e2caca7067b4439373f4fb04a5cd7d21).  This commit introduces a
  common function that's called from both paths to hopefully avoid such
  issues in the future.
  
  The serialize/deserialize functions are moved from MemoryProgramCache
  to the Program itself.
  
  Bug: 890539,angleproject:2516
  Change-Id: Idc5b87de53298aacbb1884e79e721b876281fb13
  Reviewed-on: https://chromium-review.googlesource.com/c/1417970
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/MemoryProgramCache.h

• //
  // Copyright 2017-2018 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.
  //
  // MemoryProgramCache: Stores compiled and linked programs in memory so they don't
  //   always have to be re-compiled. Can be used in conjunction with the platform
  //   layer to warm up the cache from disk.
  
  #ifndef LIBANGLE_MEMORY_PROGRAM_CACHE_H_
  #define LIBANGLE_MEMORY_PROGRAM_CACHE_H_
  
  #include <array>
  
  #include "common/MemoryBuffer.h"
  #include "libANGLE/BlobCache.h"
  #include "libANGLE/Error.h"
  
  namespace gl
  {
  class Context;
  class Program;
  class ProgramState;
  
  class MemoryProgramCache final : angle::NonCopyable
  {
    public:
      explicit MemoryProgramCache(egl::BlobCache &blobCache);
      ~MemoryProgramCache();
  
      static void ComputeHash(const Context *context,
                              const Program *program,
                              egl::BlobCache::Key *hashOut);
  
      // Check if the cache contains a binary matching the specified program.
      bool get(const Context *context,
               const egl::BlobCache::Key &programHash,
               egl::BlobCache::Value *programOut);
  
      // For querying the contents of the cache.
      bool getAt(size_t index,
                 const egl::BlobCache::Key **hashOut,
                 egl::BlobCache::Value *programOut);
  
      // Evict a program from the binary cache.
      void remove(const egl::BlobCache::Key &programHash);
  
      // Helper method that serializes a program.
      void putProgram(const egl::BlobCache::Key &programHash,
                      const Context *context,
                      const Program *program);
  
      // Same as putProgram but computes the hash.
      void updateProgram(const Context *context, const Program *program);
  
      // Store a binary directly.  TODO(syoussefi): deprecated.  Will be removed once Chrome supports
      // EGL_ANDROID_blob_cache. http://anglebug.com/2516
      void putBinary(const egl::BlobCache::Key &programHash, const uint8_t *binary, size_t length);
  
      // Check the cache, and deserialize and load the program if found. Evict existing hash if load
      // fails.
      angle::Result getProgram(const Context *context,
                               Program *program,
                               egl::BlobCache::Key *hashOut);
  
      // Empty the cache.
      void clear();
  
      // Resize the cache. Discards current contents.
      void resize(size_t maxCacheSizeBytes);
  
      // Returns the number of entries in the cache.
      size_t entryCount() const;
  
      // Reduces the current cache size and returns the number of bytes freed.
      size_t trim(size_t limit);
  
      // Returns the current cache size in bytes.
      size_t size() const;
  
      // Returns the maximum cache size in bytes.
      size_t maxSize() const;
  
    private:
      egl::BlobCache &mBlobCache;
      unsigned int mIssuedWarnings;
  };
  
  }  // namespace gl
  
  #endif  // LIBANGLE_MEMORY_PROGRAM_CACHE_H_
  

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