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

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• Hash : 431cbc8e
  Author :
  Date : 2014-09-24T10:38:50
  

  Benchmark point sprites test with several varyings.
  
  A potential performance slowdown could be our geometry shader using
  extra logic in packing varyings. Test this by adding a variable
  number of varyings to the point sprites benchmark.
  
  Initial tests show it could slow down the test by about 30-40% or so,
  stil not catastrophic compared to D3D9.
  
  BUG=angle:705
  
  Change-Id: Ia815f0ee28e2af2d3dc4d9f5675c27bbeb4cb119
  Reviewed-on: https://chromium-review.googlesource.com/216468
  Tested-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

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• tests/perf_tests/PointSprites.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 PointSpritesParams : public BenchmarkParams
  {
      unsigned int iterations;
      unsigned int count;
      float size;
      unsigned int numVaryings;
  
      virtual std::string name() const;
  };
  
  class PointSpritesBenchmark : public SimpleBenchmark
  {
  public:
      PointSpritesBenchmark(const PointSpritesParams &params);
  
      virtual bool initializeBenchmark();
      virtual void destroyBenchmark();
      virtual void beginDrawBenchmark();
      virtual void drawBenchmark();
  
  private:
      DISALLOW_COPY_AND_ASSIGN(PointSpritesBenchmark);
  
      GLuint mProgram;
      GLuint mBuffer;
  
      const PointSpritesParams mParams;
  };
  

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