blob: 5c907d0273b89c811922bac1b90bc9360238f6a0 [file] [log] [blame]
// Copyright 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.
#include "cc/test/skia_common.h"
#include <stddef.h>
#include "base/memory/ptr_util.h"
#include "cc/paint/display_item_list.h"
#include "cc/paint/paint_canvas.h"
#include "third_party/skia/include/core/SkImageGenerator.h"
#include "third_party/skia/include/core/SkPixmap.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/skia_util.h"
namespace cc {
namespace {
class TestImageGenerator : public SkImageGenerator {
public:
explicit TestImageGenerator(const SkImageInfo& info)
: SkImageGenerator(info),
image_backing_memory_(info.getSafeSize(info.minRowBytes()), 0),
image_pixmap_(info, image_backing_memory_.data(), info.minRowBytes()) {}
protected:
bool onGetPixels(const SkImageInfo& info,
void* pixels,
size_t rowBytes,
SkPMColor ctable[],
int* ctableCount) override {
return image_pixmap_.readPixels(info, pixels, rowBytes, 0, 0);
}
private:
std::vector<uint8_t> image_backing_memory_;
SkPixmap image_pixmap_;
};
} // anonymous namespace
void DrawDisplayList(unsigned char* buffer,
const gfx::Rect& layer_rect,
scoped_refptr<const DisplayItemList> list) {
SkImageInfo info =
SkImageInfo::MakeN32Premul(layer_rect.width(), layer_rect.height());
SkBitmap bitmap;
bitmap.installPixels(info, buffer, info.minRowBytes());
SkCanvas canvas(bitmap);
canvas.clipRect(gfx::RectToSkRect(layer_rect));
list->Raster(&canvas, NULL, layer_rect, 1.0f);
}
bool AreDisplayListDrawingResultsSame(const gfx::Rect& layer_rect,
const DisplayItemList* list_a,
const DisplayItemList* list_b) {
const size_t pixel_size = 4 * layer_rect.size().GetArea();
std::unique_ptr<unsigned char[]> pixels_a(new unsigned char[pixel_size]);
std::unique_ptr<unsigned char[]> pixels_b(new unsigned char[pixel_size]);
memset(pixels_a.get(), 0, pixel_size);
memset(pixels_b.get(), 0, pixel_size);
DrawDisplayList(pixels_a.get(), layer_rect, list_a);
DrawDisplayList(pixels_b.get(), layer_rect, list_b);
return !memcmp(pixels_a.get(), pixels_b.get(), pixel_size);
}
sk_sp<SkImage> CreateDiscardableImage(const gfx::Size& size) {
return SkImage::MakeFromGenerator(base::MakeUnique<TestImageGenerator>(
SkImageInfo::MakeN32Premul(size.width(), size.height())));
}
} // namespace cc