kc3-lang/angle/tests/perf_tests/TexSubImage.h

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• Hash : bbffd556
  Author :
  Date : 2014-09-10T10:12:49
  

  Add a TexSubImage benchmark.
  
  Currently we are about 2x as slow on this micro-benchmark in D3D11.
  Preliminary testing suggests using CopySubresourceRegion gives
  improved performance across the board, but testing could disprove
  this hypothesis.
  
  Modified from a sample from bajones.
  
  BUG=angle:705
  
  Change-Id: Iedf36a4e7b9b9bbed308302fd2bf3912acacbd2c
  Reviewed-on: https://chromium-review.googlesource.com/216272
  Tested-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

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• tests/perf_tests/TexSubImage.h

• //
  // Copyright (c) 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 "SimpleBenchmark.h"
  
  struct TexSubImageParams : public BenchmarkParams
  {
      int imageWidth;
      int imageHeight;
      int subImageWidth;
      int subImageHeight;
      unsigned int iterations;
  
      virtual std::string name() const;
  };
  
  class TexSubImageBenchmark : public SimpleBenchmark
  {
    public:
      TexSubImageBenchmark(const TexSubImageParams &params);
  
      virtual bool initializeBenchmark();
      virtual void destroyBenchmark();
      virtual void beginDrawBenchmark();
      virtual void drawBenchmark();
  
    private:
      GLuint createTexture();
  
      TexSubImageParams mParams;
  
      // Handle to a program object
      GLuint mProgram;
  
      // Attribute locations
      GLint mPositionLoc;
      GLint mTexCoordLoc;
  
      // Sampler location
      GLint mSamplerLoc;
  
      // Texture handle
      GLuint mTexture;
  
      // Buffer handle
      GLuint mVertexBuffer;
      GLuint mIndexBuffer;
  
      GLubyte *mPixels;
  };
  

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