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chromium / chromium / src / 1853b734e013824b9a25a24f172ccd6a15cdf2b6 / . / components / viz / common / gl_helper_unittest.cc
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// Copyright 2016 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.
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include <GLES2/gl2extchromium.h>
#include <algorithm>
#include <cmath>
#include <string>
#include <tuple>
#include <utility>
#include <vector>
#include "base/bind.h"
#include "base/macros.h"
#include "base/memory/ref_counted_memory.h"
#include "base/run_loop.h"
#include "base/strings/stringprintf.h"
#include "base/synchronization/waitable_event.h"
#include "base/threading/thread_task_runner_handle.h"
#include "base/time/time.h"
#include "build/build_config.h"
#include "components/viz/common/gl_helper.h"
#include "components/viz/common/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 "third_party/skia/include/core/SkTypes.h"
#if !defined(OS_ANDROID)
namespace viz {
GLHelper::ScalerQuality kQualities[] = {
GLHelper::SCALER_QUALITY_BEST, GLHelper::SCALER_QUALITY_GOOD,
GLHelper::SCALER_QUALITY_FAST,
};
const char* kQualityNames[] = {
"best", "good", "fast",
};
class GLHelperTest : public testing::Test {
protected:
void SetUp() override {
gpu::ContextCreationAttribs attributes;
attributes.alpha_size = 8;
attributes.depth_size = 24;
attributes.red_size = 8;
attributes.green_size = 8;
attributes.blue_size = 8;
attributes.stencil_size = 8;
attributes.samples = 4;
attributes.sample_buffers = 1;
attributes.bind_generates_resource = false;
context_ = std::make_unique<gpu::GLInProcessContext>();
auto result =
context_->Initialize(nullptr, /* service */
nullptr, /* surface */
true, /* offscreen */
gpu::kNullSurfaceHandle, /* window */
attributes, gpu::SharedMemoryLimits(),
nullptr, /* gpu_memory_buffer_manager */
nullptr, /* image_factory */
base::ThreadTaskRunnerHandle::Get());
DCHECK_EQ(result, gpu::ContextResult::kSuccess);
gl_ = context_->GetImplementation();
gpu::ContextSupport* support = context_->GetImplementation();
helper_.reset(new GLHelper(gl_, support));
helper_scaling_.reset(new GLHelperScaling(gl_, helper_.get()));
}
void TearDown() override {
helper_scaling_.reset(nullptr);
helper_.reset(nullptr);
context_.reset(nullptr);
}
// Bicubic filter kernel function.
static float Bicubic(float x) {
const float a = -0.5;
x = std::abs(x);
float x2 = x * x;
float x3 = x2 * x;
if (x <= 1) {
return (a + 2) * x3 - (a + 3) * x2 + 1;
} else if (x < 2) {
return a * x3 - 5 * a * x2 + 8 * a * x - 4 * a;
} else {
return 0.0f;
}
}
// Look up a single channel value. Works for 4-channel and single channel
// bitmaps. Clamp x/y.
int Channel(SkBitmap* pixels, int x, int y, int c) {
if (pixels->bytesPerPixel() == 4) {
uint32_t* data =
pixels->getAddr32(std::max(0, std::min(x, pixels->width() - 1)),
std::max(0, std::min(y, pixels->height() - 1)));
return (*data) >> (c * 8) & 0xff;
} else {
DCHECK_EQ(pixels->bytesPerPixel(), 1);
DCHECK_EQ(c, 0);
return *pixels->getAddr8(std::max(0, std::min(x, pixels->width() - 1)),
std::max(0, std::min(y, pixels->height() - 1)));
}
}
// Set a single channel value. Works for 4-channel and single channel
// bitmaps. Clamp x/y.
void SetChannel(SkBitmap* pixels, int x, int y, int c, int v) {
DCHECK_GE(x, 0);
DCHECK_GE(y, 0);
DCHECK_LT(x, pixels->width());
DCHECK_LT(y, pixels->height());
if (pixels->bytesPerPixel() == 4) {
uint32_t* data = pixels->getAddr32(x, y);
v = std::max(0, std::min(v, 255));
*data = (*data & ~(0xffu << (c * 8))) | (v << (c * 8));
} else {
DCHECK_EQ(pixels->bytesPerPixel(), 1);
DCHECK_EQ(c, 0);
uint8_t* data = pixels->getAddr8(x, y);
v = std::max(0, std::min(v, 255));
*data = v;
}
}
// Print all the R, G, B or A values from an SkBitmap in a
// human-readable format.
void PrintChannel(SkBitmap* pixels, int c) {
for (int y = 0; y < pixels->height(); y++) {
std::string formatted;
for (int x = 0; x < pixels->width(); x++) {
formatted.append(base::StringPrintf("%3d, ", Channel(pixels, x, y, c)));
}
LOG(ERROR) << formatted;
}
}
// Print out the individual steps of a scaler pipeline.
std::string PrintStages(
const std::vector<GLHelperScaling::ScalerStage>& scaler_stages) {
std::string ret;
for (size_t i = 0; i < scaler_stages.size(); i++) {
ret.append(base::StringPrintf(
"%dx%d -> %dx%d ", scaler_stages[i].scale_from.x(),
scaler_stages[i].scale_from.y(), scaler_stages[i].scale_to.x(),
scaler_stages[i].scale_to.y()));
bool xy_matters = false;
switch (scaler_stages[i].shader) {
case GLHelperScaling::SHADER_BILINEAR:
ret.append("bilinear");
break;
case GLHelperScaling::SHADER_BILINEAR2:
ret.append("bilinear2");
xy_matters = true;
break;
case GLHelperScaling::SHADER_BILINEAR3:
ret.append("bilinear3");
xy_matters = true;
break;
case GLHelperScaling::SHADER_BILINEAR4:
ret.append("bilinear4");
xy_matters = true;
break;
case GLHelperScaling::SHADER_BILINEAR2X2:
ret.append("bilinear2x2");
break;
case GLHelperScaling::SHADER_BICUBIC_UPSCALE:
ret.append("bicubic upscale");
xy_matters = true;
break;
case GLHelperScaling::SHADER_BICUBIC_HALF_1D:
ret.append("bicubic 1/2");
xy_matters = true;
break;
case GLHelperScaling::SHADER_PLANAR:
ret.append("planar");
break;
case GLHelperScaling::SHADER_YUV_MRT_PASS1:
ret.append("rgb2yuv pass 1");
break;
case GLHelperScaling::SHADER_YUV_MRT_PASS2:
ret.append("rgb2yuv pass 2");
break;
}
if (xy_matters) {
if (scaler_stages[i].scale_x) {
ret.append(" X");
} else {
ret.append(" Y");
}
}
ret.append("\n");
}
return ret;
}
bool CheckScale(double scale, int samples, bool already_scaled) {
// 1:1 is valid if there is one sample.
if (samples == 1 && scale == 1.0) {
return true;
}
// Is it an exact down-scale (50%, 25%, etc.?)
if (scale == 2.0 * samples) {
return true;
}
// Upscales, only valid if we haven't already scaled in this dimension.
if (!already_scaled) {
// Is it a valid bilinear upscale?
if (samples == 1 && scale <= 1.0) {
return true;
}
// Multi-sample upscale-downscale combination?
if (scale > samples / 2.0 && scale < samples) {
return true;
}
}
return false;
}
// Make sure that the stages of the scaler pipeline are sane.
void ValidateScalerStages(
GLHelper::ScalerQuality quality,
const std::vector<GLHelperScaling::ScalerStage>& scaler_stages,
const gfx::Vector2d& overall_scale_from,
const gfx::Vector2d& overall_scale_to,
const std::string& message) {
bool previous_error = HasFailure();
// Used to verify that up-scales are not attempted after some
// other scale.
bool scaled_x = false;
bool scaled_y = false;
double combined_x_scale = 1.0;
double combined_y_scale = 1.0;
for (size_t i = 0; i < scaler_stages.size(); i++) {
// Note: 2.0 means scaling down by 50%
double x_scale = static_cast<double>(scaler_stages[i].scale_from.x()) /
static_cast<double>(scaler_stages[i].scale_to.x());
combined_x_scale *= x_scale;
double y_scale = static_cast<double>(scaler_stages[i].scale_from.y()) /
static_cast<double>(scaler_stages[i].scale_to.y());
combined_y_scale *= y_scale;
int x_samples = 0;
int y_samples = 0;
// Codify valid scale operations.
switch (scaler_stages[i].shader) {
case GLHelperScaling::SHADER_PLANAR:
case GLHelperScaling::SHADER_YUV_MRT_PASS1:
case GLHelperScaling::SHADER_YUV_MRT_PASS2:
EXPECT_TRUE(false) << "Invalid shader.";
break;
case GLHelperScaling::SHADER_BILINEAR:
if (quality != GLHelper::SCALER_QUALITY_FAST) {
x_samples = 1;
y_samples = 1;
}
break;
case GLHelperScaling::SHADER_BILINEAR2:
x_samples = 2;
y_samples = 1;
break;
case GLHelperScaling::SHADER_BILINEAR3:
x_samples = 3;
y_samples = 1;
break;
case GLHelperScaling::SHADER_BILINEAR4:
x_samples = 4;
y_samples = 1;
break;
case GLHelperScaling::SHADER_BILINEAR2X2:
x_samples = 2;
y_samples = 2;
break;
case GLHelperScaling::SHADER_BICUBIC_UPSCALE:
if (scaler_stages[i].scale_x) {
EXPECT_LT(x_scale, 1.0);
EXPECT_EQ(y_scale, 1.0);
} else {
EXPECT_EQ(x_scale, 1.0);
EXPECT_LT(y_scale, 1.0);
}
break;
case GLHelperScaling::SHADER_BICUBIC_HALF_1D:
if (scaler_stages[i].scale_x) {
EXPECT_EQ(x_scale, 2.0);
EXPECT_EQ(y_scale, 1.0);
} else {
EXPECT_EQ(x_scale, 1.0);
EXPECT_EQ(y_scale, 2.0);
}
break;
}
if (!scaler_stages[i].scale_x) {
std::swap(x_samples, y_samples);
}
if (x_samples) {
EXPECT_TRUE(CheckScale(x_scale, x_samples, scaled_x))
<< "x_scale = " << x_scale;
}
if (y_samples) {
EXPECT_TRUE(CheckScale(y_scale, y_samples, scaled_y))
<< "y_scale = " << y_scale;
}
if (x_scale != 1.0) {
scaled_x = true;
}
if (y_scale != 1.0) {
scaled_y = true;
}
}
const double expected_x_scale =
static_cast<double>(overall_scale_from.x()) /
static_cast<double>(overall_scale_to.x());
const double expected_y_scale =
static_cast<double>(overall_scale_from.y()) /
static_cast<double>(overall_scale_to.y());
EXPECT_NEAR(expected_x_scale, combined_x_scale, 1e-9);
EXPECT_NEAR(expected_y_scale, combined_y_scale, 1e-9);
if (HasFailure() && !previous_error) {
LOG(ERROR) << "Invalid scaler stages: " << message;
LOG(ERROR) << "Scaler stages:";
LOG(ERROR) << PrintStages(scaler_stages);
}
}
// Compares two bitmaps taking color types into account. Checks whether each
// component of each pixel is no more than |maxdiff| apart. If bitmaps are not
// similar enough, prints out |truth|, |other|, |source|, |scaler_stages|
// and |message|.
void Compare(SkBitmap* truth,
SkBitmap* other,
int maxdiff,
SkBitmap* source,
const std::vector<GLHelperScaling::ScalerStage>& scaler_stages,
std::string message) {
EXPECT_EQ(truth->width(), other->width());
EXPECT_EQ(truth->height(), other->height());
bool swizzle = (truth->colorType() == kRGBA_8888_SkColorType &&
other->colorType() == kBGRA_8888_SkColorType) ||
(truth->colorType() == kBGRA_8888_SkColorType &&
other->colorType() == kRGBA_8888_SkColorType);
EXPECT_TRUE(swizzle || truth->colorType() == other->colorType());
int bpp = truth->bytesPerPixel();
for (int x = 0; x < truth->width(); x++) {
for (int y = 0; y < truth->height(); y++) {
for (int c = 0; c < bpp; c++) {
int a = Channel(truth, x, y, c);
// swizzle when comparing if needed
int b = swizzle && (c == 0 || c == 2)
? Channel(other, x, y, (c + 2) & 2)
: Channel(other, x, y, c);
EXPECT_NEAR(a, b, maxdiff)
<< " x=" << x << " y=" << y << " c=" << c << " " << message;
if (std::abs(a - b) > maxdiff) {
LOG(ERROR) << "-------expected--------";
for (int i = 0; i < bpp; i++) {
LOG(ERROR) << "Channel " << i << ":";
PrintChannel(truth, i);
}
LOG(ERROR) << "-------actual--------";
for (int i = 0; i < bpp; i++) {
LOG(ERROR) << "Channel " << i << ":";
PrintChannel(other, i);
}
if (source) {
LOG(ERROR) << "-------original--------";
for (int i = 0; i < source->bytesPerPixel(); i++) {
LOG(ERROR) << "Channel " << i << ":";
PrintChannel(source, i);
}
}
LOG(ERROR) << "-----Scaler stages------";
LOG(ERROR) << PrintStages(scaler_stages);
return;
}
}
}
}
}
// Get a single R, G, B or A value as a float.
float ChannelAsFloat(SkBitmap* pixels, int x, int y, int c) {
return Channel(pixels, x, y, c) / 255.0;
}
// Works like a GL_LINEAR lookup on an SkBitmap.
float Bilinear(SkBitmap* pixels, float x, float y, int c) {
x -= 0.5;
y -= 0.5;
int base_x = static_cast<int>(floorf(x));
int base_y = static_cast<int>(floorf(y));
x -= base_x;
y -= base_y;
return (ChannelAsFloat(pixels, base_x, base_y, c) * (1 - x) * (1 - y) +
ChannelAsFloat(pixels, base_x + 1, base_y, c) * x * (1 - y) +
ChannelAsFloat(pixels, base_x, base_y + 1, c) * (1 - x) * y +
ChannelAsFloat(pixels, base_x + 1, base_y + 1, c) * x * y);
}
// Very slow bicubic / bilinear scaler for reference.
void ScaleSlow(SkBitmap* input,
const gfx::Rect& source_rect,
GLHelper::ScalerQuality quality,
SkBitmap* output) {
float xscale = static_cast<float>(source_rect.width()) / output->width();
float yscale = static_cast<float>(source_rect.height()) / output->height();
float clamped_xscale = xscale < 1.0 ? 1.0 : 1.0 / xscale;
float clamped_yscale = yscale < 1.0 ? 1.0 : 1.0 / yscale;
for (int dst_y = 0; dst_y < output->height(); dst_y++) {
for (int dst_x = 0; dst_x < output->width(); dst_x++) {
for (int channel = 0; channel < 4; channel++) {
float dst_x_in_src = source_rect.x() + (dst_x + 0.5f) * xscale;
float dst_y_in_src = source_rect.y() + (dst_y + 0.5f) * yscale;
float value = 0.0f;
float sum = 0.0f;
switch (quality) {
case GLHelper::SCALER_QUALITY_BEST:
for (int src_y = source_rect.y() - 10;
src_y < source_rect.bottom() + 10; ++src_y) {
float coeff_y =
Bicubic((src_y + 0.5f - dst_y_in_src) * clamped_yscale);
if (coeff_y == 0.0f) {
continue;
}
for (int src_x = source_rect.x() - 10;
src_x < source_rect.right() + 10; ++src_x) {
float coeff =
coeff_y *
Bicubic((src_x + 0.5f - dst_x_in_src) * clamped_xscale);
if (coeff == 0.0f) {
continue;
}
sum += coeff;
float c = ChannelAsFloat(input, src_x, src_y, channel);
value += c * coeff;
}
}
break;
case GLHelper::SCALER_QUALITY_GOOD: {
int xshift = 0, yshift = 0;
while ((output->width() << xshift) < source_rect.width()) {
xshift++;
}
while ((output->height() << yshift) < source_rect.height()) {
yshift++;
}
int xmag = 1 << xshift;
int ymag = 1 << yshift;
if (xmag == 4 && output->width() * 3 >= source_rect.width()) {
xmag = 3;
}
if (ymag == 4 && output->height() * 3 >= source_rect.height()) {
ymag = 3;
}
for (int x = 0; x < xmag; x++) {
for (int y = 0; y < ymag; y++) {
value += Bilinear(input,
source_rect.x() + (dst_x * xmag + x + 0.5) *
xscale / xmag,
source_rect.y() + (dst_y * ymag + y + 0.5) *
yscale / ymag,
channel);
sum += 1.0;
}
}
break;
}
case GLHelper::SCALER_QUALITY_FAST:
value = Bilinear(input, dst_x_in_src, dst_y_in_src, channel);
sum = 1.0;
}
value /= sum;
SetChannel(output, dst_x, dst_y, channel,
static_cast<int>(value * 255.0f + 0.5f));
}
}
}
}
void FlipSKBitmap(SkBitmap* bitmap) {
int bpp = bitmap->bytesPerPixel();
DCHECK(bpp == 4 || bpp == 1);
int top_line = 0;
int bottom_line = bitmap->height() - 1;
while (top_line < bottom_line) {
for (int x = 0; x < bitmap->width(); x++) {
bpp == 4 ? std::swap(*bitmap->getAddr32(x, top_line),
*bitmap->getAddr32(x, bottom_line))
: std::swap(*bitmap->getAddr8(x, top_line),
*bitmap->getAddr8(x, bottom_line));
}
top_line++;
bottom_line--;
}
}
// gl_helper scales recursively, so we'll need to do that
// in the reference implementation too.
void ScaleSlowRecursive(SkBitmap* input,
const gfx::Rect& source_rect,
GLHelper::ScalerQuality quality,
SkBitmap* output) {
if (quality == GLHelper::SCALER_QUALITY_FAST ||
quality == GLHelper::SCALER_QUALITY_GOOD) {
ScaleSlow(input, source_rect, quality, output);
return;
}
float xscale = static_cast<float>(output->width()) / source_rect.width();
// This corresponds to all the operations we can do directly.
float yscale = static_cast<float>(output->height()) / source_rect.height();
if ((xscale == 1.0f && yscale == 1.0f) ||
(xscale == 0.5f && yscale == 1.0f) ||
(xscale == 1.0f && yscale == 0.5f) ||
(xscale >= 1.0f && yscale == 1.0f) ||
(xscale == 1.0f && yscale >= 1.0f)) {
ScaleSlow(input, source_rect, quality, output);
return;
}
// Now we break the problem down into smaller pieces, using the
// operations available.
int xtmp = source_rect.width();
int ytmp = source_rect.height();
if (output->height() != source_rect.height()) {
ytmp = output->height();
while (ytmp < source_rect.height() && ytmp * 2 != source_rect.height()) {
ytmp += ytmp;
}
} else {
xtmp = output->width();
while (xtmp < source_rect.width() && xtmp * 2 != source_rect.width()) {
xtmp += xtmp;
}
}
// Note: The following does not account for scaler overscan. This was
// attempted, but then unit test run time increased by a factor of 30!
SkBitmap tmp;
tmp.allocN32Pixels(xtmp, ytmp);
ScaleSlowRecursive(input, source_rect, quality, &tmp);
ScaleSlowRecursive(&tmp, gfx::Rect(0, 0, xtmp, ytmp), quality, output);
}
// Creates an RGBA SkBitmap with one of the pre-programmed test patterns. The
// pattern starts at the given |origin|. For positions to the left or above
// that point, values are filled-in corresponding to GL_CLAMP_TO_EDGE
// behavior. This is because the reference scaler does not properly account
// for overscan.
std::unique_ptr<SkBitmap> CreateTestBitmap(const gfx::Size& size,
const gfx::Point& origin,
int test_pattern) {
std::unique_ptr<SkBitmap> bitmap(new SkBitmap);
bitmap->allocPixels(SkImageInfo::Make(size.width(), size.height(),
kRGBA_8888_SkColorType,
kPremul_SkAlphaType));
for (int x = 0; x < size.width(); ++x) {
for (int y = 0; y < size.height(); ++y) {
const int s = std::max(0, x - origin.x());
const int t = std::max(0, y - origin.y());
switch (test_pattern) {
case 0: // Smooth test pattern
SetChannel(bitmap.get(), x, y, 0, s * 10);
SetChannel(bitmap.get(), x, y, 0, t == 0 ? s * 50 : s * 10);
SetChannel(bitmap.get(), x, y, 1, t * 10);
SetChannel(bitmap.get(), x, y, 2, (s + t) * 10);
SetChannel(bitmap.get(), x, y, 3, 255);
break;
case 1: // Small blocks
SetChannel(bitmap.get(), x, y, 0, s & 1 ? 255 : 0);
SetChannel(bitmap.get(), x, y, 1, t & 1 ? 255 : 0);
SetChannel(bitmap.get(), x, y, 2, (s + t) & 1 ? 255 : 0);
SetChannel(bitmap.get(), x, y, 3, 255);
break;
case 2: // Medium blocks
SetChannel(bitmap.get(), x, y, 0, 10 + s / 2 * 50);
SetChannel(bitmap.get(), x, y, 1, 10 + t / 3 * 50);
SetChannel(bitmap.get(), x, y, 2, (s + t) / 5 * 50 + 5);
SetChannel(bitmap.get(), x, y, 3, 255);
break;
}
}
}
return bitmap;
}
// Scaling test: Create a test image, scale it using GLHelperScaling
// and a reference implementation and compare the results.
void TestScale(const gfx::Rect& source_rect,
const gfx::Size& scaled_size,
int test_pattern,
size_t quality_index,
bool flip_output) {
// The source texture is meant to be the contents of a framebuffer. Thus, it
// includes (0,0), and all the way out to the lower-right corner of the
// |source_rect|.
const gfx::Size framebuffer_size(source_rect.right(), source_rect.bottom());
std::unique_ptr<SkBitmap> input_pixels =
CreateTestBitmap(framebuffer_size, source_rect.origin(), test_pattern);
GLuint src_texture;
gl_->GenTextures(1, &src_texture);
gl_->BindTexture(GL_TEXTURE_2D, src_texture);
gl_->TexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, framebuffer_size.width(),
framebuffer_size.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE,
input_pixels->getPixels());
std::string message = base::StringPrintf(
"source rect: %s "
"output size: %s "
"pattern: %d quality: %s %s",
source_rect.ToString().c_str(), scaled_size.ToString().c_str(),
test_pattern, kQualityNames[quality_index],
flip_output ? "flipout" : "noflipout");
std::vector<GLHelperScaling::ScalerStage> stages;
const auto scale_from =
gfx::Vector2d(source_rect.width(), source_rect.height());
const auto scale_to =
gfx::Vector2d(scaled_size.width(), scaled_size.height());
helper_scaling_->ComputeScalerStages(kQualities[quality_index], scale_from,
scale_to, false, flip_output, false,
&stages);
ValidateScalerStages(kQualities[quality_index], stages, scale_from,
scale_to, message);
// Scale the source texture, producing the results in a new output
// texture.
std::unique_ptr<GLHelper::ScalerInterface> scaler =
helper_->CreateScaler(kQualities[quality_index], scale_from, scale_to,
false, flip_output, false);
ASSERT_FALSE(scaler->IsSamplingFlippedSource());
ASSERT_EQ(flip_output, scaler->IsFlippingOutput());
GLuint dst_texture = 0;
gl_->GenTextures(1, &dst_texture);
gl_->BindTexture(GL_TEXTURE_2D, dst_texture);
gl_->TexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, scaled_size.width(),
scaled_size.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE,
nullptr);
scaler->Scale(src_texture, framebuffer_size, source_rect.OffsetFromOrigin(),
dst_texture, gfx::Rect(scaled_size));
SkBitmap output_pixels;
output_pixels.allocPixels(
SkImageInfo::Make(scaled_size.width(), scaled_size.height(),
kRGBA_8888_SkColorType, kPremul_SkAlphaType));
EXPECT_TRUE(
ReadBackTexture(dst_texture, scaled_size,
static_cast<unsigned char*>(output_pixels.getPixels()),
kRGBA_8888_SkColorType));
if (flip_output) {
// Flip the pixels back.
FlipSKBitmap(&output_pixels);
}
// If the bitmap shouldn't have changed - compare against input.
if (source_rect == gfx::Rect(scaled_size)) {
Compare(input_pixels.get(), &output_pixels, 0, nullptr, stages,
message + " comparing against input");
return;
}
// Now scale the bitmap using the reference implementation.
SkBitmap truth_pixels;
truth_pixels.allocPixels(
SkImageInfo::Make(scaled_size.width(), scaled_size.height(),
kRGBA_8888_SkColorType, kPremul_SkAlphaType));
ScaleSlowRecursive(input_pixels.get(), source_rect,
kQualities[quality_index], &truth_pixels);
// Compare the results produced by the two implementations. Note that the
// reference implementation does not fully account for overscan (see
// comment in ScaleSlowRecursive()), and so the the maxdiff must be
// increased when the bicubic scaler is being used.
const int maxdiff = 2 + (quality_index == 0 ? (2 * stages.size()) : 0);
Compare(&truth_pixels, &output_pixels, maxdiff, input_pixels.get(), stages,
message + " comparing against scaled");
gl_->DeleteTextures(1, &src_texture);
gl_->DeleteTextures(1, &dst_texture);
}
// Scaling patching test: Scale an entire source image, and then scale various
// subsets of the source image; and then confirm that the pixels in the
// subsets exactly match their corresponding ones in the whole. This is
// critical for use cases where the scaler only needs to render the changed
// region of a source image.
void TestScalePatching(const gfx::Vector2d& scale_from,
const gfx::Vector2d& scale_to,
int test_pattern,
size_t quality_index,
bool flipped_source) {
// Generate a source texture representing copied-from-framebuffer content
// with a test pattern that is twice the size of the "from" vector.
const gfx::Size framebuffer_size(scale_from.x() * 2, scale_from.y() * 2);
std::unique_ptr<SkBitmap> test_bitmap =
CreateTestBitmap(framebuffer_size, gfx::Point(), test_pattern);
if (flipped_source)
FlipSKBitmap(test_bitmap.get());
GLuint src_texture;
gl_->GenTextures(1, &src_texture);
gl_->BindTexture(GL_TEXTURE_2D, src_texture);
gl_->TexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, framebuffer_size.width(),
framebuffer_size.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE,
test_bitmap->getPixels());
const std::unique_ptr<GLHelper::ScalerInterface> scaler =
helper_->CreateScaler(kQualities[quality_index], scale_from, scale_to,
flipped_source, false, false);
ASSERT_EQ(flipped_source, scaler->IsSamplingFlippedSource());
ASSERT_FALSE(scaler->IsFlippingOutput());
// Note: These scaler stages are only being computed here for the benefit
// Compare()'s error output messaging, below.
std::vector<GLHelperScaling::ScalerStage> stages;
helper_scaling_->ComputeScalerStages(kQualities[quality_index], scale_from,
scale_to, flipped_source, false, false,
&stages);
// First, produce the entire output image, a full scan of the source to
// produce all the output pixels. The output image is twice the size of the
// "to" vector.
GLuint dst_texture;
gl_->GenTextures(1, &dst_texture);
gl_->BindTexture(GL_TEXTURE_2D, dst_texture);
const gfx::Size entire_output_size(scale_to.x() * 2, scale_to.y() * 2);
gl_->TexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, entire_output_size.width(),
entire_output_size.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE,
nullptr);
scaler->Scale(src_texture, framebuffer_size, gfx::Vector2dF(), dst_texture,
gfx::Rect(entire_output_size));
SkBitmap entire_output;
entire_output.allocPixels(SkImageInfo::Make(
entire_output_size.width(), entire_output_size.height(),
kRGBA_8888_SkColorType, kPremul_SkAlphaType));
EXPECT_TRUE(
ReadBackTexture(dst_texture, entire_output_size,
static_cast<unsigned char*>(entire_output.getPixels()),
kRGBA_8888_SkColorType));
const std::string human_readable_test_params = base::StringPrintf(
"scale from: %s "
"scale to: %s "
"pattern: %d quality: %s %s",
scale_from.ToString().c_str(), scale_to.ToString().c_str(),
test_pattern, kQualityNames[quality_index],
flipped_source ? "flippedsource" : "");
// Check the entire output image against the reference implementation.
SkBitmap entire_output_ref;
entire_output_ref.allocPixels(SkImageInfo::Make(
entire_output_size.width(), entire_output_size.height(),
kRGBA_8888_SkColorType, kPremul_SkAlphaType));
ScaleSlowRecursive(test_bitmap.get(), gfx::Rect(framebuffer_size),
kQualities[quality_index], &entire_output_ref);
Compare(&entire_output_ref, &entire_output, 2, test_bitmap.get(), stages,
human_readable_test_params + " ENTIRE OUTPUT");
if (HasFailure())
return;
// Now, produce patches at various offsets and compare to the pixels in
// |entire_output|.
const gfx::Size patch_size(scale_to.x(), scale_to.y());
gl_->BindTexture(GL_TEXTURE_2D, dst_texture);
gl_->TexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, patch_size.width(),
patch_size.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
for (int xoffset = 0; xoffset < scale_to.x(); ++xoffset) {
for (int yoffset = 0; yoffset < scale_to.y(); ++yoffset) {
const gfx::Rect patch_rect(gfx::Point(xoffset, yoffset), patch_size);
// First method of producing a patch: Scale from the same source texture
// and just provide an offset output Rect.
scaler->Scale(src_texture, framebuffer_size, gfx::Vector2dF(),
dst_texture, patch_rect);
SkBitmap patch_output;
patch_output.allocPixels(
SkImageInfo::Make(patch_size.width(), patch_size.height(),
kRGBA_8888_SkColorType, kPremul_SkAlphaType));
EXPECT_TRUE(ReadBackTexture(
dst_texture, patch_size,
static_cast<unsigned char*>(patch_output.getPixels()),
kRGBA_8888_SkColorType));
SkBitmap expected;
SkIRect expected_subrect{patch_rect.x(), patch_rect.y(),
patch_rect.right(), patch_rect.bottom()};
if (flipped_source) {
expected_subrect.fTop = entire_output.height() - patch_rect.bottom();
expected_subrect.fBottom = entire_output.height() - patch_rect.y();
}
ASSERT_TRUE(entire_output.extractSubset(&expected, expected_subrect));
Compare(&expected, &patch_output, 2, test_bitmap.get(), stages,
"METHOD1 " + human_readable_test_params +
" patch rect: " + patch_rect.ToString());
if (HasFailure())
return;
// Second method of producing a patch: First copy just the "region of
// influence" of the source texture, then produced a scaled image from
// that.
gfx::Rect sampling_rect;
gfx::Vector2dF offset;
scaler->ComputeRegionOfInfluence(framebuffer_size, gfx::Vector2dF(),
patch_rect, &sampling_rect, &offset);
// TODO(crbug.com/775740): Only test offsets having whole-numbered
// coordinates until the scalers can account for the other case.
if (offset.x() == std::floor(offset.x()) &&
offset.y() == std::floor(offset.y())) {
GLuint src_subset_texture;
gl_->GenTextures(1, &src_subset_texture);
gl_->BindTexture(GL_TEXTURE_2D, src_subset_texture);
gl_->TexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, sampling_rect.width(),
sampling_rect.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE,
nullptr);
gl_->CopySubTextureCHROMIUM(
src_texture, 0 /* source_level */, GL_TEXTURE_2D,
src_subset_texture, 0 /* dest_level */, 0 /* xoffset */,
0 /* yoffset */, sampling_rect.x(), sampling_rect.y(),
sampling_rect.width(), sampling_rect.height(), false, false,
false);
scaler->Scale(src_subset_texture, sampling_rect.size(), offset,
dst_texture, gfx::Rect(patch_size));
gl_->DeleteTextures(1, &src_subset_texture);
EXPECT_TRUE(ReadBackTexture(
dst_texture, patch_size,
static_cast<unsigned char*>(patch_output.getPixels()),
kRGBA_8888_SkColorType));
Compare(&expected, &patch_output, 2, test_bitmap.get(), stages,
"METHOD2 " + human_readable_test_params +
" patch rect: " + patch_rect.ToString());
if (HasFailure())
return;
}
}
}
gl_->DeleteTextures(1, &src_texture);
gl_->DeleteTextures(1, &dst_texture);
}
// Create a scaling pipeline and check that it is made up of
// valid scaling operations.
void TestScalerPipeline(size_t quality,
int xsize,
int ysize,
int dst_xsize,
int dst_ysize) {
std::vector<GLHelperScaling::ScalerStage> stages;
helper_scaling_->ComputeScalerStages(
kQualities[quality], gfx::Vector2d(xsize, ysize),
gfx::Vector2d(dst_xsize, dst_ysize), false, false, false, &stages);
ValidateScalerStages(kQualities[quality], stages,
gfx::Vector2d(xsize, ysize),
gfx::Vector2d(dst_xsize, dst_ysize),
base::StringPrintf("input size: %dx%d "
"output size: %dx%d "
"quality: %s",
xsize, ysize, dst_xsize, dst_ysize,
kQualityNames[quality]));
}
// Create a scaling pipeline and make sure that the steps
// are exactly the steps we expect.
void CheckPipeline(GLHelper::ScalerQuality quality,
int xsize,
int ysize,
int dst_xsize,
int dst_ysize,
const std::string& description) {
std::vector<GLHelperScaling::ScalerStage> stages;
helper_scaling_->ComputeScalerStages(quality, gfx::Vector2d(xsize, ysize),
gfx::Vector2d(dst_xsize, dst_ysize),
false, false, false, &stages);
ValidateScalerStages(GLHelper::SCALER_QUALITY_GOOD, stages,
gfx::Vector2d(xsize, ysize),
gfx::Vector2d(dst_xsize, dst_ysize), "");
EXPECT_EQ(PrintStages(stages), description);
}
void DrawGridToBitmap(int w,
int h,
SkColor background_color,
SkColor grid_color,
int grid_pitch,
int grid_width,
const SkBitmap& bmp) {
ASSERT_GT(grid_pitch, 0);
ASSERT_GT(grid_width, 0);
ASSERT_NE(background_color, grid_color);
for (int y = 0; y < h; ++y) {
bool y_on_grid = ((y % grid_pitch) < grid_width);
for (int x = 0; x < w; ++x) {
bool on_grid = (y_on_grid || ((x % grid_pitch) < grid_width));
*bmp.getAddr32(x, y) = (on_grid ? grid_color : background_color);
}
}
}
void DrawCheckerToBitmap(int w,
int h,
SkColor color1,
SkColor color2,
int rect_w,
int rect_h,
const SkBitmap& bmp) {
ASSERT_GT(rect_w, 0);
ASSERT_GT(rect_h, 0);
ASSERT_NE(color1, color2);
for (int y = 0; y < h; ++y) {
bool y_bit = (((y / rect_h) & 0x1) == 0);
for (int x = 0; x < w; ++x) {
bool x_bit = (((x / rect_w) & 0x1) == 0);
bool use_color2 = (x_bit != y_bit); // xor
*bmp.getAddr32(x, y) = (use_color2 ? color2 : color1);
}
}
}
bool ColorComponentsClose(SkColor component1, SkColor component2) {
int c1 = static_cast<int>(component1);
int c2 = static_cast<int>(component2);
return (std::abs(c1 - c2) == 0);
}
bool ColorsClose(SkColor color1, SkColor color2) {
bool red = ColorComponentsClose(SkColorGetR(color1), SkColorGetR(color2));
bool green = ColorComponentsClose(SkColorGetG(color1), SkColorGetG(color2));
bool blue = ColorComponentsClose(SkColorGetB(color1), SkColorGetB(color2));
bool alpha = ColorComponentsClose(SkColorGetA(color1), SkColorGetA(color2));
return red && blue && green && alpha;
}
bool IsEqual(const SkBitmap& bmp1, const SkBitmap& bmp2) {
if (bmp1.isNull() && bmp2.isNull())
return true;
if (bmp1.width() != bmp2.width() || bmp1.height() != bmp2.height()) {
LOG(ERROR) << "Bitmap geometry check failure";
return false;
}
if (bmp1.colorType() != bmp2.colorType())
return false;
if (!bmp1.getPixels() || !bmp2.getPixels()) {
LOG(ERROR) << "Empty Bitmap!";
return false;
}
for (int y = 0; y < bmp1.height(); ++y) {
for (int x = 0; x < bmp1.width(); ++x) {
if (!ColorsClose(bmp1.getColor(x, y), bmp2.getColor(x, y))) {
LOG(ERROR) << "Bitmap color comparison failure";
return false;
}
}
}
return true;
}
void BindAndAttachTextureWithPixels(GLuint src_texture,
SkColorType color_type,
const gfx::Size& src_size,
const SkBitmap& input_pixels) {
gl_->BindTexture(GL_TEXTURE_2D, src_texture);
const GLenum format =
(color_type == kBGRA_8888_SkColorType) ? GL_BGRA_EXT : GL_RGBA;
gl_->TexImage2D(GL_TEXTURE_2D, 0, format, src_size.width(),
src_size.height(), 0, format, GL_UNSIGNED_BYTE,
input_pixels.getPixels());
}
bool ReadBackTexture(GLuint src_texture,
const gfx::Size& src_size,
unsigned char* pixels,
SkColorType color_type) {
base::RunLoop run_loop;
bool success = false;
helper_->ReadbackTextureAsync(
src_texture, src_size, pixels, color_type,
base::BindOnce(
[](bool* success, base::OnceClosure callback, bool result) {
*success = result;
std::move(callback).Run();
},
&success, run_loop.QuitClosure()));
run_loop.Run();
return success;
}
// Test basic format readback.
bool TestTextureFormatReadback(const gfx::Size& src_size,
SkColorType color_type) {
SkImageInfo info = SkImageInfo::Make(src_size.width(), src_size.height(),
color_type, kPremul_SkAlphaType);
GLuint src_texture;
gl_->GenTextures(1, &src_texture);
SkBitmap input_pixels;
input_pixels.allocPixels(info);
// Test Pattern-1, Fill with Plain color pattern.
// Erase the input bitmap with red color.
input_pixels.eraseColor(SK_ColorRED);
BindAndAttachTextureWithPixels(src_texture, color_type, src_size,
input_pixels);
SkBitmap output_pixels;
output_pixels.allocPixels(info);
// Initialize the output bitmap with Green color.
// When the readback is over output bitmap should have the red color.
output_pixels.eraseColor(SK_ColorGREEN);
uint8_t* pixels = static_cast<uint8_t*>(output_pixels.getPixels());
if (!ReadBackTexture(src_texture, src_size, pixels, color_type) ||
!IsEqual(input_pixels, output_pixels)) {
LOG(ERROR) << "Bitmap comparison failure Pattern-1";
return false;
}
const int rect_w = 10, rect_h = 4, src_grid_pitch = 10, src_grid_width = 4;
const SkColor color1 = SK_ColorRED, color2 = SK_ColorBLUE;
// Test Pattern-2, Fill with Grid Pattern.
DrawGridToBitmap(src_size.width(), src_size.height(), color2, color1,
src_grid_pitch, src_grid_width, input_pixels);
BindAndAttachTextureWithPixels(src_texture, color_type, src_size,
input_pixels);
if (!ReadBackTexture(src_texture, src_size, pixels, color_type) ||
!IsEqual(input_pixels, output_pixels)) {
LOG(ERROR) << "Bitmap comparison failure Pattern-2";
return false;
}
// Test Pattern-3, Fill with CheckerBoard Pattern.
DrawCheckerToBitmap(src_size.width(), src_size.height(), color1, color2,
rect_w, rect_h, input_pixels);
BindAndAttachTextureWithPixels(src_texture, color_type, src_size,
input_pixels);
if (!ReadBackTexture(src_texture, src_size, pixels, color_type) ||
!IsEqual(input_pixels, output_pixels)) {
LOG(ERROR) << "Bitmap comparison failure Pattern-3";
return false;
}
gl_->DeleteTextures(1, &src_texture);
if (HasFailure()) {
return false;
}
return true;
}
void TestAddOps(int src, int dst, bool scale_x, bool allow3) {
base::circular_deque<GLHelperScaling::ScaleOp> ops;
GLHelperScaling::ScaleOp::AddOps(src, dst, scale_x, allow3, &ops);
// Scale factor 3 is a special case.
// It is currently only allowed by itself.
if (allow3 && dst * 3 >= src && dst * 2 < src) {
EXPECT_EQ(ops[0].scale_factor, 3);
EXPECT_EQ(ops.size(), 1U);
EXPECT_EQ(ops[0].scale_x, scale_x);
EXPECT_EQ(ops[0].scale_size, dst);
return;
}
for (size_t i = 0; i < ops.size(); i++) {
EXPECT_EQ(ops[i].scale_x, scale_x);
if (i == 0) {
// Only the first op is allowed to be a scale up.
// (Scaling up *after* scaling down would make it fuzzy.)
EXPECT_TRUE(ops[0].scale_factor == 0 || ops[0].scale_factor == 2);
} else {
// All other operations must be 50% downscales.
EXPECT_EQ(ops[i].scale_factor, 2);
}
}
// Check that the scale factors make sense and add up.
int tmp = dst;
for (int i = static_cast<int>(ops.size() - 1); i >= 0; i--) {
EXPECT_EQ(tmp, ops[i].scale_size);
if (ops[i].scale_factor == 0) {
EXPECT_EQ(i, 0);
EXPECT_GT(tmp, src);
tmp = src;
} else {
tmp *= ops[i].scale_factor;
}
}
EXPECT_EQ(tmp, src);
}
void CheckPipeline2(int xsize,
int ysize,
int dst_xsize,
int dst_ysize,
const std::string& description) {
std::vector<GLHelperScaling::ScalerStage> stages;
helper_scaling_->ConvertScalerOpsToScalerStages(
GLHelper::SCALER_QUALITY_GOOD, gfx::Vector2d(xsize, ysize), &x_ops_,
&y_ops_, &stages);
EXPECT_EQ(x_ops_.size(), 0U);
EXPECT_EQ(y_ops_.size(), 0U);
ValidateScalerStages(GLHelper::SCALER_QUALITY_GOOD, stages,
gfx::Vector2d(xsize, ysize),
gfx::Vector2d(dst_xsize, dst_ysize), "");
EXPECT_EQ(PrintStages(stages), description);
}
void CheckOptimizationsTest() {
// Basic upscale. X and Y should be combined into one pass.
x_ops_.push_back(GLHelperScaling::ScaleOp(0, true, 2000));
y_ops_.push_back(GLHelperScaling::ScaleOp(0, false, 2000));
CheckPipeline2(1024, 768, 2000, 2000, "1024x768 -> 2000x2000 bilinear\n");
// X scaled 1/2, Y upscaled, should still be one pass.
x_ops_.push_back(GLHelperScaling::ScaleOp(2, true, 512));
y_ops_.push_back(GLHelperScaling::ScaleOp(0, false, 2000));
CheckPipeline2(1024, 768, 512, 2000, "1024x768 -> 512x2000 bilinear\n");
// X upscaled, Y scaled 1/2, one bilinear pass
x_ops_.push_back(GLHelperScaling::ScaleOp(0, true, 2000));
y_ops_.push_back(GLHelperScaling::ScaleOp(2, false, 384));
CheckPipeline2(1024, 768, 2000, 384, "1024x768 -> 2000x384 bilinear\n");
// X scaled 1/2, Y scaled 1/2, one bilinear pass
x_ops_.push_back(GLHelperScaling::ScaleOp(2, true, 512));
y_ops_.push_back(GLHelperScaling::ScaleOp(2, false, 384));
CheckPipeline2(1024, 768, 512, 384, "1024x768 -> 512x384 bilinear\n");
// X scaled 1/2, Y scaled to 60%, one bilinear2 pass.
x_ops_.push_back(GLHelperScaling::ScaleOp(2, true, 50));
y_ops_.push_back(GLHelperScaling::ScaleOp(0, false, 120));
y_ops_.push_back(GLHelperScaling::ScaleOp(2, false, 60));
CheckPipeline2(100, 100, 50, 60, "100x100 -> 50x60 bilinear2 Y\n");
// X scaled to 60%, Y scaled 1/2, one bilinear2 pass.
x_ops_.push_back(GLHelperScaling::ScaleOp(0, true, 120));
x_ops_.push_back(GLHelperScaling::ScaleOp(2, true, 60));
y_ops_.push_back(GLHelperScaling::ScaleOp(2, false, 50));
CheckPipeline2(100, 100, 60, 50, "100x100 -> 60x50 bilinear2 X\n");
// X scaled to 60%, Y scaled 60%, one bilinear2x2 pass.
x_ops_.push_back(GLHelperScaling::ScaleOp(0, true, 120));
x_ops_.push_back(GLHelperScaling::ScaleOp(2, true, 60));
y_ops_.push_back(GLHelperScaling::ScaleOp(0, false, 120));
y_ops_.push_back(GLHelperScaling::ScaleOp(2, false, 60));
CheckPipeline2(100, 100, 60, 60, "100x100 -> 60x60 bilinear2x2\n");
// X scaled to 40%, Y scaled 40%, two bilinear3 passes.
x_ops_.push_back(GLHelperScaling::ScaleOp(3, true, 40));
y_ops_.push_back(GLHelperScaling::ScaleOp(3, false, 40));
CheckPipeline2(100, 100, 40, 40,
"100x100 -> 100x40 bilinear3 Y\n"
"100x40 -> 40x40 bilinear3 X\n");
// X scaled to 60%, Y scaled 40%
x_ops_.push_back(GLHelperScaling::ScaleOp(0, true, 120));
x_ops_.push_back(GLHelperScaling::ScaleOp(2, true, 60));
y_ops_.push_back(GLHelperScaling::ScaleOp(3, false, 40));
CheckPipeline2(100, 100, 60, 40,
"100x100 -> 100x40 bilinear3 Y\n"
"100x40 -> 60x40 bilinear2 X\n");
// X scaled to 40%, Y scaled 60%
x_ops_.push_back(GLHelperScaling::ScaleOp(3, true, 40));
y_ops_.push_back(GLHelperScaling::ScaleOp(0, false, 120));
y_ops_.push_back(GLHelperScaling::ScaleOp(2, false, 60));
CheckPipeline2(100, 100, 40, 60,
"100x100 -> 100x60 bilinear2 Y\n"
"100x60 -> 40x60 bilinear3 X\n");
// X scaled to 30%, Y scaled 30%
x_ops_.push_back(GLHelperScaling::ScaleOp(0, true, 120));
x_ops_.push_back(GLHelperScaling::ScaleOp(2, true, 60));
x_ops_.push_back(GLHelperScaling::ScaleOp(2, true, 30));
y_ops_.push_back(GLHelperScaling::ScaleOp(0, false, 120));
y_ops_.push_back(GLHelperScaling::ScaleOp(2, false, 60));
y_ops_.push_back(GLHelperScaling::ScaleOp(2, false, 30));
CheckPipeline2(100, 100, 30, 30,
"100x100 -> 100x30 bilinear4 Y\n"
"100x30 -> 30x30 bilinear4 X\n");
// X scaled to 50%, Y scaled 30%
x_ops_.push_back(GLHelperScaling::ScaleOp(2, true, 50));
y_ops_.push_back(GLHelperScaling::ScaleOp(0, false, 120));
y_ops_.push_back(GLHelperScaling::ScaleOp(2, false, 60));
y_ops_.push_back(GLHelperScaling::ScaleOp(2, false, 30));
CheckPipeline2(100, 100, 50, 30, "100x100 -> 50x30 bilinear4 Y\n");
// X scaled to 150%, Y scaled 30%
// Note that we avoid combinding X and Y passes
// as that would probably be LESS efficient here.
x_ops_.push_back(GLHelperScaling::ScaleOp(0, true, 150));
y_ops_.push_back(GLHelperScaling::ScaleOp(0, false, 120));
y_ops_.push_back(GLHelperScaling::ScaleOp(2, false, 60));
y_ops_.push_back(GLHelperScaling::ScaleOp(2, false, 30));
CheckPipeline2(100, 100, 150, 30,
"100x100 -> 100x30 bilinear4 Y\n"
"100x30 -> 150x30 bilinear\n");
// X scaled to 1%, Y scaled 1%
x_ops_.push_back(GLHelperScaling::ScaleOp(0, true, 128));
x_ops_.push_back(GLHelperScaling::ScaleOp(2, true, 64));
x_ops_.push_back(GLHelperScaling::ScaleOp(2, true, 32));
x_ops_.push_back(GLHelperScaling::ScaleOp(2, true, 16));
x_ops_.push_back(GLHelperScaling::ScaleOp(2, true, 8));
x_ops_.push_back(GLHelperScaling::ScaleOp(2, true, 4));
x_ops_.push_back(GLHelperScaling::ScaleOp(2, true, 2));
x_ops_.push_back(GLHelperScaling::ScaleOp(2, true, 1));
y_ops_.push_back(GLHelperScaling::ScaleOp(0, false, 128));
y_ops_.push_back(GLHelperScaling::ScaleOp(2, false, 64));
y_ops_.push_back(GLHelperScaling::ScaleOp(2, false, 32));
y_ops_.push_back(GLHelperScaling::ScaleOp(2, false, 16));
y_ops_.push_back(GLHelperScaling::ScaleOp(2, false, 8));
y_ops_.push_back(GLHelperScaling::ScaleOp(2, false, 4));
y_ops_.push_back(GLHelperScaling::ScaleOp(2, false, 2));
y_ops_.push_back(GLHelperScaling::ScaleOp(2, false, 1));
CheckPipeline2(100, 100, 1, 1,
"100x100 -> 100x32 bilinear4 Y\n"
"100x32 -> 100x4 bilinear4 Y\n"
"100x4 -> 64x1 bilinear2x2\n"
"64x1 -> 8x1 bilinear4 X\n"
"8x1 -> 1x1 bilinear4 X\n");
}
std::unique_ptr<gpu::GLInProcessContext> context_;
gpu::gles2::GLES2Interface* gl_;
std::unique_ptr<GLHelper> helper_;
std::unique_ptr<GLHelperScaling> helper_scaling_;
base::circular_deque<GLHelperScaling::ScaleOp> x_ops_, y_ops_;
};
class GLHelperPixelTest : public GLHelperTest {
private:
gl::DisableNullDrawGLBindings enable_pixel_output_;
};
TEST_F(GLHelperTest, RGBAASyncReadbackTest) {
const int kTestSize = 64;
bool result = TestTextureFormatReadback(gfx::Size(kTestSize, kTestSize),
kRGBA_8888_SkColorType);
EXPECT_EQ(result, true);
}
TEST_F(GLHelperTest, BGRAASyncReadbackTest) {
const int kTestSize = 64;
bool result = TestTextureFormatReadback(gfx::Size(kTestSize, kTestSize),
kBGRA_8888_SkColorType);
EXPECT_EQ(result, true);
}
int kRGBReadBackSizes[] = {3, 6, 16};
class GLHelperPixelReadbackTest
: public GLHelperPixelTest,
public ::testing::WithParamInterface<std::tuple<unsigned int,
unsigned int,
unsigned int,
unsigned int,
unsigned int>> {};
// Per pixel tests, all sizes are small so that we can print
// out the generated bitmaps.
TEST_P(GLHelperPixelReadbackTest, ScaleTest) {
unsigned int q_index = std::get<0>(GetParam());
unsigned int x = std::get<1>(GetParam());
unsigned int y = std::get<2>(GetParam());
unsigned int dst_x = std::get<3>(GetParam());
unsigned int dst_y = std::get<4>(GetParam());
for (int flip_output = 0; flip_output <= 1; ++flip_output) {
for (int pattern = 0; pattern < 3; ++pattern) {
for (int xoffset = 0; xoffset < 4; ++xoffset) {
for (int yoffset = 0; yoffset < 4; ++yoffset) {
TestScale(
gfx::Rect(xoffset, yoffset, kRGBReadBackSizes[x],
kRGBReadBackSizes[y]),
gfx::Size(kRGBReadBackSizes[dst_x], kRGBReadBackSizes[dst_y]),
pattern, q_index, !!flip_output);
if (HasFailure()) {
return;
}
}
}
}
}
}
// FLAKY: https://crbug.com/871799
TEST_P(GLHelperPixelReadbackTest, DISABLED_ScalePatching) {
for (int flipped_source = 0; flipped_source <= 1; ++flipped_source) {
for (int pattern = 0; pattern < 3; ++pattern) {
TestScalePatching(
gfx::Vector2d(kRGBReadBackSizes[std::get<1>(GetParam())],
kRGBReadBackSizes[std::get<2>(GetParam())]),
gfx::Vector2d(kRGBReadBackSizes[std::get<3>(GetParam())],
kRGBReadBackSizes[std::get<4>(GetParam())]),
pattern, std::get<0>(GetParam()), !!flipped_source);
if (HasFailure()) {
return;
}
}
}
}
INSTANTIATE_TEST_CASE_P(
,
GLHelperPixelReadbackTest,
::testing::Combine(
::testing::Range<unsigned int>(0, arraysize(kQualities)),
::testing::Range<unsigned int>(0, arraysize(kRGBReadBackSizes)),
::testing::Range<unsigned int>(0, arraysize(kRGBReadBackSizes)),
::testing::Range<unsigned int>(0, arraysize(kRGBReadBackSizes)),
::testing::Range<unsigned int>(0, arraysize(kRGBReadBackSizes))));
// Validate that all scaling generates valid pipelines.
TEST_F(GLHelperTest, ValidateScalerPipelines) {
int sizes[] = {7, 99, 128, 256, 512, 719, 720, 721, 1920, 2011, 3217, 4096};
for (size_t q = 0; q < arraysize(kQualities); q++) {
for (size_t x = 0; x < arraysize(sizes); x++) {
for (size_t y = 0; y < arraysize(sizes); y++) {
for (size_t dst_x = 0; dst_x < arraysize(sizes); dst_x++) {
for (size_t dst_y = 0; dst_y < arraysize(sizes); dst_y++) {
TestScalerPipeline(q, sizes[x], sizes[y], sizes[dst_x],
sizes[dst_y]);
if (HasFailure()) {
return;
}
}
}
}
}
}
}
// Make sure we don't create overly complicated pipelines
// for a few common use cases.
TEST_F(GLHelperTest, CheckSpecificPipelines) {
// Upscale should be single pass.
CheckPipeline(GLHelper::SCALER_QUALITY_GOOD, 1024, 700, 1280, 720,
"1024x700 -> 1280x720 bilinear\n");
// Slight downscale should use BILINEAR2X2.
CheckPipeline(GLHelper::SCALER_QUALITY_GOOD, 1280, 720, 1024, 700,
"1280x720 -> 1024x700 bilinear2x2\n");
// Most common tab capture pipeline on the Pixel.
// Should be using two BILINEAR3 passes.
CheckPipeline(GLHelper::SCALER_QUALITY_GOOD, 2560, 1476, 1249, 720,
"2560x1476 -> 2560x720 bilinear3 Y\n"
"2560x720 -> 1249x720 bilinear3 X\n");
}
TEST_F(GLHelperTest, ScalerOpTest) {
for (int allow3 = 0; allow3 <= 1; allow3++) {
for (int dst = 1; dst < 2049; dst += 1 + (dst >> 3)) {
for (int src = 1; src < 2049; src++) {
TestAddOps(src, dst, allow3 == 1, (src & 1) == 1);
if (HasFailure()) {
LOG(ERROR) << "Failed for src=" << src << " dst=" << dst
<< " allow3=" << allow3;
return;
}
}
}
}
}
TEST_F(GLHelperTest, CheckOptimizations) {
// Test in baseclass since it is friends with GLHelperScaling
CheckOptimizationsTest();
}
} // namespace viz
#endif // OS_ANDROID