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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/gl/test/gl_test_helper.h"
#include <memory>
#include <string>
#include "base/compiler_specific.h"
#include "base/containers/heap_array.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/gl/gl_surface_egl.h"
#include "ui/gl/init/gl_factory.h"
#if BUILDFLAG(IS_WIN)
#include <wingdi.h>
#include "base/win/scoped_gdi_object.h"
#include "base/win/scoped_hdc.h"
#include "base/win/scoped_select_object.h"
#include "third_party/skia/include/core/SkColorSpace.h"
#include "third_party/skia/include/core/SkImageInfo.h"
#include "ui/gfx/gdi_util.h"
#include "ui/gl/direct_composition_support.h"
#endif
namespace gl {
// static
GLuint GLTestHelper::CreateTexture(GLenum target) {
// Create the texture object.
GLuint texture = 0;
glGenTextures(1, &texture);
glBindTexture(target, texture);
glTexParameteri(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
return texture;
}
// static
GLuint GLTestHelper::SetupFramebuffer(int width, int height) {
GLuint color_buffer_texture = CreateTexture(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, color_buffer_texture);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA,
GL_UNSIGNED_BYTE, nullptr);
GLuint framebuffer = 0;
glGenFramebuffersEXT(1, &framebuffer);
glBindFramebufferEXT(GL_FRAMEBUFFER, framebuffer);
glFramebufferTexture2DEXT(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D,
color_buffer_texture, 0);
if (glCheckFramebufferStatusEXT(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
EXPECT_EQ(static_cast<GLenum>(GL_FRAMEBUFFER_COMPLETE),
glCheckFramebufferStatusEXT(GL_FRAMEBUFFER))
<< "Error setting up framebuffer";
glDeleteFramebuffersEXT(1, &framebuffer);
framebuffer = 0;
}
glBindFramebufferEXT(GL_FRAMEBUFFER, 0);
glDeleteTextures(1, &color_buffer_texture);
return framebuffer;
}
std::pair<scoped_refptr<GLSurface>, scoped_refptr<GLContext>>
GLTestHelper::CreateOffscreenGLSurfaceAndContext() {
scoped_refptr<GLSurface> gl_surface = init::CreateOffscreenGLSurface(
gl::GLSurfaceEGL::GetGLDisplayEGL(), gfx::Size());
scoped_refptr<GLContext> context =
gl::init::CreateGLContext(nullptr, gl_surface.get(), GLContextAttribs());
EXPECT_TRUE(context->MakeCurrent(gl_surface.get()));
return std::make_pair(std::move(gl_surface), std::move(context));
}
#if BUILDFLAG(IS_WIN)
// static
SkColor GLTestHelper::GetColorAtPoint(const SkBitmap& bitmap,
const gfx::Point& location) {
CHECK_GE(location.x(), 0);
CHECK_LT(location.x(), bitmap.width());
CHECK_GE(location.y(), 0);
CHECK_LT(location.y(), bitmap.height());
return bitmap.getColor(location.x(), location.y());
}
// static
SkBitmap GLTestHelper::ReadBackWindow(HWND window, const gfx::Size& size) {
{
// Ensure that the previous commit has been processed before trying to read
// back the window contents.
Microsoft::WRL::ComPtr<IDCompositionDevice2> dcomp_device =
GetDirectCompositionDevice();
if (dcomp_device) {
CHECK_EQ(S_OK, dcomp_device->WaitForCommitCompletion());
}
}
base::win::ScopedCreateDC mem_hdc(::CreateCompatibleDC(nullptr));
DCHECK(mem_hdc.IsValid());
BITMAPV4HEADER hdr;
gfx::CreateBitmapV4HeaderForARGB888(size.width(), size.height(), &hdr);
void* bits = nullptr;
base::win::ScopedGDIObject<HBITMAP> bitmap(
::CreateDIBSection(mem_hdc.Get(), reinterpret_cast<BITMAPINFO*>(&hdr),
DIB_RGB_COLORS, &bits, nullptr, 0));
DCHECK(bitmap.is_valid());
base::win::ScopedSelectObject select_object(mem_hdc.Get(), bitmap.get());
// Grab a copy of the window. Use PrintWindow because it works even when the
// window's partially occluded. The PW_RENDERFULLCONTENT flag is undocumented,
// but works starting in Windows 8.1. It allows for capturing the contents of
// the window that are drawn using DirectComposition.
UINT flags = PW_CLIENTONLY | PW_RENDERFULLCONTENT;
BOOL result = PrintWindow(window, mem_hdc.Get(), flags);
if (!result)
PLOG(ERROR) << "Failed to print window";
GdiFlush();
SkBitmap sk_bitmap;
CHECK(sk_bitmap.tryAllocPixels(SkImageInfo::Make(
SkISize::Make(size.width(), size.height()),
SkColorInfo(SkColorType::kBGRA_8888_SkColorType,
SkAlphaType::kPremul_SkAlphaType, nullptr))));
UNSAFE_TODO(
memcpy(sk_bitmap.getAddr(0, 0), bits, sk_bitmap.computeByteSize()));
return sk_bitmap;
}
// static
SkColor GLTestHelper::ReadBackWindowPixel(HWND window,
const gfx::Point& point) {
gfx::Size size(point.x() + 1, point.y() + 1);
auto pixels = ReadBackWindow(window, size);
return GetColorAtPoint(pixels, point);
}
#endif
} // namespace gl
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