src/content/common/gpu/client/gl_helper_benchmark.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 // This file looks like a unit test, but it contains benchmarks and test
   6 // utilities intended for manual evaluation of the scalers in
   7 // gl_helper*. These tests produce output in the form of files and printouts,
   8 // but cannot really "fail". There is no point in making these tests part
   9 // of any test automation run.
  10
  11 #include <stdio.h>
  12 #include <cmath>
  13 #include <string>
  14 #include <vector>
  15
  16 #include <GLES2/gl2.h>
  17 #include <GLES2/gl2ext.h>
  18 #include <GLES2/gl2extchromium.h>
  19
  20 #include "base/at_exit.h"
  21 #include "base/command_line.h"
  22 #include "base/file_util.h"
  23 #include "base/strings/stringprintf.h"
  24 #include "base/time/time.h"
  25 #include "content/common/gpu/client/gl_helper.h"
  26 #include "content/common/gpu/client/gl_helper_scaling.h"
  27 #include "content/public/test/unittest_test_suite.h"
  28 #include "content/test/content_test_suite.h"
  29 #include "testing/gtest/include/gtest/gtest.h"
  30 #include "third_party/skia/include/core/SkBitmap.h"
  31 #include "third_party/skia/include/core/SkTypes.h"
  32 #include "ui/gfx/codec/png_codec.h"
  33 #include "ui/gl/gl_surface.h"
  34 #include "webkit/common/gpu/webgraphicscontext3d_in_process_command_buffer_impl.h"
  35
  36 #if defined(OS_MACOSX)
  37 #include "base/mac/scoped_nsautorelease_pool.h"
  38 #endif
  39
  40 namespace content {
  41
  42 using blink::WebGLId;
  43 using blink::WebGraphicsContext3D;
  44
  45 content::GLHelper::ScalerQuality kQualities[] = {
  46   content::GLHelper::SCALER_QUALITY_BEST,
  47   content::GLHelper::SCALER_QUALITY_GOOD,
  48   content::GLHelper::SCALER_QUALITY_FAST,
  49 };
  50
  51 const char *kQualityNames[] = {
  52   "best",
  53   "good",
  54   "fast",
  55 };
  56
  57 class GLHelperTest : public testing::Test {
  58  protected:
  59   virtual void SetUp() {
  60     WebGraphicsContext3D::Attributes attributes;
  61     bool lose_context_when_out_of_memory = false;
  62     context_ = webkit::gpu::WebGraphicsContext3DInProcessCommandBufferImpl::
  63         CreateOffscreenContext(attributes, lose_context_when_out_of_memory);
  64     context_->makeContextCurrent();
  65
  66     helper_.reset(
  67         new content::GLHelper(context_->GetGLInterface(),
  68                               context_->GetContextSupport()));
  69     helper_scaling_.reset(new content::GLHelperScaling(
  70         context_->GetGLInterface(),
  71         helper_.get()));
  72   }
  73
  74   virtual void TearDown() {
  75     helper_scaling_.reset(NULL);
  76     helper_.reset(NULL);
  77     context_.reset(NULL);
  78   }
  79
  80
  81   void LoadPngFileToSkBitmap(const base::FilePath& filename,
  82                              SkBitmap* bitmap) {
  83     std::string compressed;
  84     base::ReadFileToString(base::MakeAbsoluteFilePath(filename), &compressed);
  85     ASSERT_TRUE(compressed.size());
  86     ASSERT_TRUE(gfx::PNGCodec::Decode(
  87         reinterpret_cast<const unsigned char*>(compressed.data()),
  88         compressed.size(), bitmap));
  89   }
  90
  91   // Save the image to a png file. Used to create the initial test files.
  92   void SaveToFile(SkBitmap* bitmap, const base::FilePath& filename) {
  93     std::vector<unsigned char> compressed;
  94     ASSERT_TRUE(gfx::PNGCodec::Encode(
  95         static_cast<unsigned char*>(bitmap->getPixels()),
  96         gfx::PNGCodec::FORMAT_BGRA,
  97         gfx::Size(bitmap->width(), bitmap->height()),
  98         static_cast<int>(bitmap->rowBytes()),
  99         true,
 100         std::vector<gfx::PNGCodec::Comment>(),
 101         &compressed));
 102     ASSERT_TRUE(compressed.size());
 103     FILE* f = base::OpenFile(filename, "wb");
 104     ASSERT_TRUE(f);
 105     ASSERT_EQ(fwrite(&*compressed.begin(), 1, compressed.size(), f),
 106               compressed.size());
 107     base::CloseFile(f);
 108   }
 109
 110   scoped_ptr<webkit::gpu::WebGraphicsContext3DInProcessCommandBufferImpl>
 111       context_;
 112   scoped_ptr<content::GLHelper> helper_;
 113   scoped_ptr<content::GLHelperScaling> helper_scaling_;
 114   std::deque<GLHelperScaling::ScaleOp> x_ops_, y_ops_;
 115 };
 116
 117
 118 TEST_F(GLHelperTest, ScaleBenchmark) {
 119   int output_sizes[] = { 1920, 1080,
 120                          1249, 720,  // Output size on pixel
 121                          256, 144 };
 122   int input_sizes[] = { 3200, 2040,
 123                         2560, 1476,  // Pixel tab size
 124                         1920, 1080,
 125                         1280, 720,
 126                         800, 480,
 127                         256, 144 };
 128
 129   for (size_t q = 0; q < arraysize(kQualities); q++) {
 130     for (size_t outsize = 0;
 131          outsize < arraysize(output_sizes);
 132          outsize += 2) {
 133       for (size_t insize = 0;
 134            insize < arraysize(input_sizes);
 135            insize += 2) {
 136         WebGLId src_texture = context_->createTexture();
 137         WebGLId dst_texture = context_->createTexture();
 138         WebGLId framebuffer = context_->createFramebuffer();
 139         const gfx::Size src_size(input_sizes[insize],
 140                                  input_sizes[insize + 1]);
 141         const gfx::Size dst_size(output_sizes[outsize],
 142                                  output_sizes[outsize + 1]);
 143         SkBitmap input;
 144         input.allocN32Pixels(src_size.width(), src_size.height());
 145
 146         SkBitmap output_pixels;
 147         output_pixels.allocN32Pixels(dst_size.width(), dst_size.height());
 148
 149         context_->bindFramebuffer(GL_FRAMEBUFFER, framebuffer);
 150         context_->bindTexture(GL_TEXTURE_2D, dst_texture);
 151         context_->texImage2D(GL_TEXTURE_2D,
 152                              0,
 153                              GL_RGBA,
 154                              dst_size.width(),
 155                              dst_size.height(),
 156                              0,
 157                              GL_RGBA,
 158                              GL_UNSIGNED_BYTE,
 159                              0);
 160         context_->bindTexture(GL_TEXTURE_2D, src_texture);
 161         context_->texImage2D(GL_TEXTURE_2D,
 162                              0,
 163                              GL_RGBA,
 164                              src_size.width(),
 165                              src_size.height(),
 166                              0,
 167                              GL_RGBA,
 168                              GL_UNSIGNED_BYTE,
 169                              input.getPixels());
 170
 171         gfx::Rect src_subrect(0, 0,
 172                               src_size.width(), src_size.height());
 173         scoped_ptr<content::GLHelper::ScalerInterface> scaler(
 174           helper_->CreateScaler(kQualities[q],
 175                                 src_size,
 176                                 src_subrect,
 177                                 dst_size,
 178                                 false,
 179                                 false));
 180         // Scale once beforehand before we start measuring.
 181         scaler->Scale(src_texture, dst_texture);
 182         context_->finish();
 183
 184         base::TimeTicks start_time = base::TimeTicks::Now();
 185         int iterations = 0;
 186         base::TimeTicks end_time;
 187         while (true) {
 188           for (int i = 0; i < 50; i++) {
 189             iterations++;
 190             scaler->Scale(src_texture, dst_texture);
 191             context_->flush();
 192           }
 193           context_->finish();
 194           end_time = base::TimeTicks::Now();
 195           if (iterations > 2000) {
 196             break;
 197           }
 198           if ((end_time - start_time).InMillisecondsF() > 1000) {
 199             break;
 200           }
 201         }
 202         context_->deleteTexture(dst_texture);
 203         context_->deleteTexture(src_texture);
 204         context_->deleteFramebuffer(framebuffer);
 205
 206         std::string name;
 207         name = base::StringPrintf("scale_%dx%d_to_%dx%d_%s",
 208                                   src_size.width(),
 209                                   src_size.height(),
 210                                   dst_size.width(),
 211                                   dst_size.height(),
 212                                   kQualityNames[q]);
 213
 214         float ms = (end_time - start_time).InMillisecondsF() / iterations;
 215         printf("*RESULT gpu_scale_time: %s=%.2f ms\n", name.c_str(), ms);
 216       }
 217     }
 218   }
 219 }
 220
 221 // This is more of a test utility than a test.
 222 // Put an PNG image called "testimage.png" in your
 223 // current directory, then run this test. It will
 224 // create testoutput_Q_P.png, where Q is the scaling
 225 // mode and P is the scaling percentage taken from
 226 // the table below.
 227 TEST_F(GLHelperTest, DISABLED_ScaleTestImage) {
 228   int percents[] = {
 229     230,
 230     180,
 231     150,
 232     110,
 233     90,
 234     70,
 235     50,
 236     49,
 237     40,
 238     20,
 239     10,
 240   };
 241
 242   SkBitmap input;
 243   LoadPngFileToSkBitmap(base::FilePath(
 244       FILE_PATH_LITERAL("testimage.png")), &input);
 245
 246   WebGLId framebuffer = context_->createFramebuffer();
 247   WebGLId src_texture = context_->createTexture();
 248   const gfx::Size src_size(input.width(), input.height());
 249   context_->bindFramebuffer(GL_FRAMEBUFFER, framebuffer);
 250   context_->bindTexture(GL_TEXTURE_2D, src_texture);
 251   context_->texImage2D(GL_TEXTURE_2D,
 252                        0,
 253                        GL_RGBA,
 254                        src_size.width(),
 255                        src_size.height(),
 256                        0,
 257                        GL_RGBA,
 258                        GL_UNSIGNED_BYTE,
 259                        input.getPixels());
 260
 261   for (size_t q = 0; q < arraysize(kQualities); q++) {
 262     for (size_t p = 0; p < arraysize(percents); p++) {
 263       const gfx::Size dst_size(input.width() * percents[p] / 100,
 264                                input.height() * percents[p] / 100);
 265       WebGLId dst_texture = helper_->CopyAndScaleTexture(
 266         src_texture,
 267         src_size,
 268         dst_size,
 269         false,
 270         kQualities[q]);
 271
 272       SkBitmap output_pixels;
 273       output_pixels.allocN32Pixels(dst_size.width(), dst_size.height());
 274
 275       helper_->ReadbackTextureSync(
 276           dst_texture,
 277           gfx::Rect(0, 0,
 278                     dst_size.width(),
 279                     dst_size.height()),
 280           static_cast<unsigned char *>(output_pixels.getPixels()),
 281           kN32_SkColorType);
 282       context_->deleteTexture(dst_texture);
 283       std::string filename = base::StringPrintf("testoutput_%s_%d.ppm",
 284                                                 kQualityNames[q],
 285                                                 percents[p]);
 286       VLOG(0) << "Writing " <<  filename;
 287       SaveToFile(&output_pixels, base::FilePath::FromUTF8Unsafe(filename));
 288     }
 289   }
 290   context_->deleteTexture(src_texture);
 291   context_->deleteFramebuffer(framebuffer);
 292 }
 293
 294 }  // namespace
 295
 296 // These tests needs to run against a proper GL environment, so we
 297 // need to set it up before we can run the tests.
 298 int main(int argc, char** argv) {
 299   base::CommandLine::Init(argc, argv);
 300   base::TestSuite* suite = new content::ContentTestSuite(argc, argv);
 301 #if defined(OS_MACOSX)
 302   base::mac::ScopedNSAutoreleasePool pool;
 303 #endif
 304   gfx::GLSurface::InitializeOneOff();
 305
 306   return content::UnitTestTestSuite(suite).Run();
 307 }