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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This file looks like a unit test, but it contains benchmarks and test
// utilities intended for manual evaluation of the scalers in
// gl_helper*. These tests produce output in the form of files and printouts,
// but cannot really "fail". There is no point in making these tests part
// of any test automation run.
#include <stdio.h>
#include <cmath>
#include <string>
#include <vector>
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include <GLES2/gl2extchromium.h>
#include "base/at_exit.h"
#include "base/command_line.h"
#include "base/files/file_util.h"
#include "base/strings/stringprintf.h"
#include "base/time/time.h"
#include "content/common/gpu/client/gl_helper.h"
#include "content/common/gpu/client/gl_helper_scaling.h"
#include "content/public/test/unittest_test_suite.h"
#include "content/test/content_test_suite.h"
#include "gpu/blink/webgraphicscontext3d_in_process_command_buffer_impl.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "third_party/skia/include/core/SkTypes.h"
#include "ui/gfx/codec/png_codec.h"
#include "ui/gl/gl_surface.h"
#if defined(OS_MACOSX)
#include "base/mac/scoped_nsautorelease_pool.h"
#endif
namespace content {
using blink::WebGLId;
using blink::WebGraphicsContext3D;
content::GLHelper::ScalerQuality kQualities[] = {
content::GLHelper::SCALER_QUALITY_BEST,
content::GLHelper::SCALER_QUALITY_GOOD,
content::GLHelper::SCALER_QUALITY_FAST,
};
const char *kQualityNames[] = {
"best",
"good",
"fast",
};
class GLHelperTest : public testing::Test {
protected:
void SetUp() override {
WebGraphicsContext3D::Attributes attributes;
bool lose_context_when_out_of_memory = false;
context_ = gpu_blink::WebGraphicsContext3DInProcessCommandBufferImpl::
CreateOffscreenContext(attributes, lose_context_when_out_of_memory);
context_->InitializeOnCurrentThread();
helper_.reset(
new content::GLHelper(context_->GetGLInterface(),
context_->GetContextSupport()));
helper_scaling_.reset(new content::GLHelperScaling(
context_->GetGLInterface(),
helper_.get()));
}
void TearDown() override {
helper_scaling_.reset(NULL);
helper_.reset(NULL);
context_.reset(NULL);
}
void LoadPngFileToSkBitmap(const base::FilePath& filename,
SkBitmap* bitmap) {
std::string compressed;
base::ReadFileToString(base::MakeAbsoluteFilePath(filename), &compressed);
ASSERT_TRUE(compressed.size());
ASSERT_TRUE(gfx::PNGCodec::Decode(
reinterpret_cast<const unsigned char*>(compressed.data()),
compressed.size(), bitmap));
}
// Save the image to a png file. Used to create the initial test files.
void SaveToFile(SkBitmap* bitmap, const base::FilePath& filename) {
std::vector<unsigned char> compressed;
ASSERT_TRUE(gfx::PNGCodec::Encode(
static_cast<unsigned char*>(bitmap->getPixels()),
gfx::PNGCodec::FORMAT_BGRA,
gfx::Size(bitmap->width(), bitmap->height()),
static_cast<int>(bitmap->rowBytes()),
true,
std::vector<gfx::PNGCodec::Comment>(),
&compressed));
ASSERT_TRUE(compressed.size());
FILE* f = base::OpenFile(filename, "wb");
ASSERT_TRUE(f);
ASSERT_EQ(fwrite(&*compressed.begin(), 1, compressed.size(), f),
compressed.size());
base::CloseFile(f);
}
scoped_ptr<gpu_blink::WebGraphicsContext3DInProcessCommandBufferImpl>
context_;
scoped_ptr<content::GLHelper> helper_;
scoped_ptr<content::GLHelperScaling> helper_scaling_;
std::deque<GLHelperScaling::ScaleOp> x_ops_, y_ops_;
};
TEST_F(GLHelperTest, ScaleBenchmark) {
int output_sizes[] = { 1920, 1080,
1249, 720, // Output size on pixel
256, 144 };
int input_sizes[] = { 3200, 2040,
2560, 1476, // Pixel tab size
1920, 1080,
1280, 720,
800, 480,
256, 144 };
for (size_t q = 0; q < arraysize(kQualities); q++) {
for (size_t outsize = 0;
outsize < arraysize(output_sizes);
outsize += 2) {
for (size_t insize = 0;
insize < arraysize(input_sizes);
insize += 2) {
WebGLId src_texture = context_->createTexture();
WebGLId dst_texture = context_->createTexture();
WebGLId framebuffer = context_->createFramebuffer();
const gfx::Size src_size(input_sizes[insize],
input_sizes[insize + 1]);
const gfx::Size dst_size(output_sizes[outsize],
output_sizes[outsize + 1]);
SkBitmap input;
input.allocN32Pixels(src_size.width(), src_size.height());
SkBitmap output_pixels;
output_pixels.allocN32Pixels(dst_size.width(), dst_size.height());
context_->bindFramebuffer(GL_FRAMEBUFFER, framebuffer);
context_->bindTexture(GL_TEXTURE_2D, dst_texture);
context_->texImage2D(GL_TEXTURE_2D,
0,
GL_RGBA,
dst_size.width(),
dst_size.height(),
0,
GL_RGBA,
GL_UNSIGNED_BYTE,
0);
context_->bindTexture(GL_TEXTURE_2D, src_texture);
context_->texImage2D(GL_TEXTURE_2D,
0,
GL_RGBA,
src_size.width(),
src_size.height(),
0,
GL_RGBA,
GL_UNSIGNED_BYTE,
input.getPixels());
gfx::Rect src_subrect(0, 0,
src_size.width(), src_size.height());
scoped_ptr<content::GLHelper::ScalerInterface> scaler(
helper_->CreateScaler(kQualities[q],
src_size,
src_subrect,
dst_size,
false,
false));
// Scale once beforehand before we start measuring.
scaler->Scale(src_texture, dst_texture);
context_->finish();
base::TimeTicks start_time = base::TimeTicks::Now();
int iterations = 0;
base::TimeTicks end_time;
while (true) {
for (int i = 0; i < 50; i++) {
iterations++;
scaler->Scale(src_texture, dst_texture);
context_->flush();
}
context_->finish();
end_time = base::TimeTicks::Now();
if (iterations > 2000) {
break;
}
if ((end_time - start_time).InMillisecondsF() > 1000) {
break;
}
}
context_->deleteTexture(dst_texture);
context_->deleteTexture(src_texture);
context_->deleteFramebuffer(framebuffer);
std::string name;
name = base::StringPrintf("scale_%dx%d_to_%dx%d_%s",
src_size.width(),
src_size.height(),
dst_size.width(),
dst_size.height(),
kQualityNames[q]);
float ms = (end_time - start_time).InMillisecondsF() / iterations;
printf("*RESULT gpu_scale_time: %s=%.2f ms\n", name.c_str(), ms);
}
}
}
}
// This is more of a test utility than a test.
// Put an PNG image called "testimage.png" in your
// current directory, then run this test. It will
// create testoutput_Q_P.png, where Q is the scaling
// mode and P is the scaling percentage taken from
// the table below.
TEST_F(GLHelperTest, DISABLED_ScaleTestImage) {
int percents[] = {
230,
180,
150,
110,
90,
70,
50,
49,
40,
20,
10,
};
SkBitmap input;
LoadPngFileToSkBitmap(base::FilePath(
FILE_PATH_LITERAL("testimage.png")), &input);
WebGLId framebuffer = context_->createFramebuffer();
WebGLId src_texture = context_->createTexture();
const gfx::Size src_size(input.width(), input.height());
context_->bindFramebuffer(GL_FRAMEBUFFER, framebuffer);
context_->bindTexture(GL_TEXTURE_2D, src_texture);
context_->texImage2D(GL_TEXTURE_2D,
0,
GL_RGBA,
src_size.width(),
src_size.height(),
0,
GL_RGBA,
GL_UNSIGNED_BYTE,
input.getPixels());
for (size_t q = 0; q < arraysize(kQualities); q++) {
for (size_t p = 0; p < arraysize(percents); p++) {
const gfx::Size dst_size(input.width() * percents[p] / 100,
input.height() * percents[p] / 100);
WebGLId dst_texture = helper_->CopyAndScaleTexture(
src_texture,
src_size,
dst_size,
false,
kQualities[q]);
SkBitmap output_pixels;
output_pixels.allocN32Pixels(dst_size.width(), dst_size.height());
helper_->ReadbackTextureSync(
dst_texture,
gfx::Rect(0, 0,
dst_size.width(),
dst_size.height()),
static_cast<unsigned char *>(output_pixels.getPixels()),
kN32_SkColorType);
context_->deleteTexture(dst_texture);
std::string filename = base::StringPrintf("testoutput_%s_%d.ppm",
kQualityNames[q],
percents[p]);
VLOG(0) << "Writing " << filename;
SaveToFile(&output_pixels, base::FilePath::FromUTF8Unsafe(filename));
}
}
context_->deleteTexture(src_texture);
context_->deleteFramebuffer(framebuffer);
}
} // namespace
// These tests needs to run against a proper GL environment, so we
// need to set it up before we can run the tests.
int main(int argc, char** argv) {
base::CommandLine::Init(argc, argv);
base::TestSuite* suite = new content::ContentTestSuite(argc, argv);
#if defined(OS_MACOSX)
base::mac::ScopedNSAutoreleasePool pool;
#endif
gfx::GLSurface::InitializeOneOff();
return content::UnitTestTestSuite(suite).Run();
}