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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <array>
// 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 <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include <GLES2/gl2extchromium.h>
#include <stddef.h>
#include <stdio.h>
#include <cmath>
#include <memory>
#include <string>
#include <vector>
#include "base/at_exit.h"
#include "base/command_line.h"
#include "base/files/file_util.h"
#include "base/memory/raw_ptr.h"
#include "base/run_loop.h"
#include "base/strings/stringprintf.h"
#include "base/test/task_environment.h"
#include "base/time/time.h"
#include "components/viz/test/test_gpu_service_holder.h"
#include "gpu/command_buffer/client/gl_helper.h"
#include "gpu/command_buffer/client/gl_helper_scaling.h"
#include "gpu/command_buffer/client/gles2_implementation.h"
#include "gpu/command_buffer/client/shared_memory_limits.h"
#include "gpu/ipc/gl_in_process_context.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "ui/gfx/codec/png_codec.h"
namespace gpu {
namespace {
auto kQualities = std::to_array<GLHelper::ScalerQuality>({
GLHelper::SCALER_QUALITY_BEST,
GLHelper::SCALER_QUALITY_GOOD,
GLHelper::SCALER_QUALITY_FAST,
});
constexpr auto kQualityNames = std::to_array<const char*>({
"best",
"good",
"fast",
});
} // namespace
class GLHelperBenchmark : public testing::Test {
protected:
void SetUp() override {
ContextCreationAttribs attributes;
attributes.bind_generates_resource = false;
attributes.gpu_preference = gl::GpuPreference::kHighPerformance;
context_ = std::make_unique<GLInProcessContext>();
auto result = context_->Initialize(
viz::TestGpuServiceHolder::GetInstance()->task_executor(), attributes,
SharedMemoryLimits());
DCHECK_EQ(result, ContextResult::kSuccess);
gl_ = context_->GetImplementation();
ContextSupport* support = context_->GetImplementation();
helper_ = std::make_unique<GLHelper>(gl_, support);
helper_scaling_ = std::make_unique<GLHelperScaling>(gl_, helper_.get());
}
void TearDown() override {
helper_scaling_.reset(nullptr);
helper_.reset(nullptr);
gl_ = nullptr;
context_.reset(nullptr);
}
base::test::TaskEnvironment task_environment_;
std::unique_ptr<GLInProcessContext> context_;
raw_ptr<gles2::GLES2Interface> gl_; // This is owned by |context_|.
std::unique_ptr<GLHelper> helper_;
std::unique_ptr<GLHelperScaling> helper_scaling_;
base::circular_deque<GLHelperScaling::ScaleOp> x_ops_, y_ops_;
};
TEST_F(GLHelperBenchmark, ScaleBenchmark) {
auto output_sizes = std::to_array<int>({
1920,
1080,
1249,
720, // Output size on pixel
256,
144,
});
auto input_sizes = std::to_array<int>({
3200,
2040,
2560,
1476, // Pixel tab size
1920,
1080,
1280,
720,
800,
480,
256,
144,
});
for (size_t q = 0; q < std::size(kQualities); q++) {
for (size_t outsize = 0; outsize < std::size(output_sizes); outsize += 2) {
for (size_t insize = 0; insize < std::size(input_sizes); insize += 2) {
uint32_t src_texture;
gl_->GenTextures(1, &src_texture);
uint32_t dst_texture;
gl_->GenTextures(1, &dst_texture);
uint32_t framebuffer;
gl_->GenFramebuffers(1, &framebuffer);
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());
gl_->BindFramebuffer(GL_FRAMEBUFFER, framebuffer);
gl_->BindTexture(GL_TEXTURE_2D, dst_texture);
gl_->TexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, dst_size.width(),
dst_size.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE,
nullptr);
gl_->BindTexture(GL_TEXTURE_2D, src_texture);
gl_->TexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, src_size.width(),
src_size.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE,
input.getPixels());
std::unique_ptr<GLHelper::ScalerInterface> scaler =
helper_->CreateScaler(
kQualities[q],
gfx::Vector2d(src_size.width(), src_size.height()),
gfx::Vector2d(dst_size.width(), dst_size.height()), false,
false, false);
// Scale once beforehand before we start measuring.
const gfx::Rect output_rect(dst_size);
scaler->Scale(src_texture, src_size, gfx::Vector2dF(), dst_texture,
output_rect);
gl_->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, src_size, gfx::Vector2dF(), dst_texture,
output_rect);
gl_->Flush();
}
gl_->Finish();
end_time = base::TimeTicks::Now();
if (iterations > 2000) {
break;
}
if ((end_time - start_time) > base::Seconds(1)) {
break;
}
}
gl_->DeleteTextures(1, &dst_texture);
gl_->DeleteTextures(1, &src_texture);
gl_->DeleteFramebuffers(1, &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;
VLOG(0) << base::StringPrintf("*RESULT gpu_scale_time: %s=%.2f ms\n",
name.c_str(), ms);
}
}
}
}
} // namespace gpu
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