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/files/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_->InitializeOnCurrentThread(); 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 } 308
