kc3-lang/angle/src/image_util/AstcDecompressorNoOp.cpp

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• Hash : 81a244de
  Author :
  Date : 2022-10-10T15:32:25
  

  Adding a class to perform ASTC texture decompression on the CPU
  
  This significantly improves performance by caching and re-using the ASTC
  decoder context, and using multi-threaded decompression.
  
  This code was originally written for gfxstream.
  
  Bug: b/250688943
  Change-Id: I1727447907f2e25cf9b854ffcc9ccfc04db2fb91
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3929008
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Charlie Lao <cclao@google.com>
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  

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• src/image_util/AstcDecompressorNoOp.cpp

• //
  // Copyright 2022 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.
  //
  
  // AstcDecompressorNoOp.cpp: No-op implementation if support for ASTC textures wasn't enabled
  
  #include "image_util/AstcDecompressor.h"
  
  namespace angle
  {
  
  namespace
  {
  
  class AstcDecompressorNoOp : public AstcDecompressor
  {
    public:
      bool available() const override { return false; }
  
      int32_t decompress(std::shared_ptr<WorkerThreadPool> singleThreadPool,
                         std::shared_ptr<WorkerThreadPool> multiThreadPool,
                         uint32_t imgWidth,
                         uint32_t imgHeight,
                         uint32_t blockWidth,
                         uint32_t blockHeight,
                         const uint8_t *astcData,
                         size_t astcDataLength,
                         uint8_t *output) override
      {
          return -1;
      }
  
      const char *getStatusString(int32_t statusCode) const override
      {
          return "ASTC CPU decomp not available";
      }
  };
  
  }  // namespace
  
  AstcDecompressor &AstcDecompressor::get()
  {
      static AstcDecompressorNoOp *instance = new AstcDecompressorNoOp();
      return *instance;
  }
  
  }  // namespace angle
  

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