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/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "TestSceneBase.h"
#include "utils/Color.h"
#include <SkGradientShader.h>
#include <SkImagePriv.h>
#include <ui/PixelFormat.h>
class HwBitmapInCompositeShader;
static TestScene::Registrar _HwBitmapInCompositeShader(TestScene::Info{
"hwbitmapcompositeshader", "Draws composite shader with hardware bitmap",
TestScene::simpleCreateScene<HwBitmapInCompositeShader>});
class HwBitmapInCompositeShader : public TestScene {
public:
sp<RenderNode> card;
void createContent(int width, int height, Canvas& canvas) override {
canvas.drawColor(Color::Red_500, SkBlendMode::kSrcOver);
uint32_t usage = GraphicBuffer::USAGE_HW_TEXTURE | GraphicBuffer::USAGE_SW_READ_NEVER |
GRALLOC_USAGE_SW_WRITE_RARELY;
sp<GraphicBuffer> buffer = new GraphicBuffer(400, 200, PIXEL_FORMAT_RGBA_8888, usage);
unsigned char* pixels = nullptr;
buffer->lock(GraphicBuffer::USAGE_SW_WRITE_RARELY, ((void**)&pixels));
size_t size =
bytesPerPixel(buffer->getPixelFormat()) * buffer->getStride() * buffer->getHeight();
memset(pixels, 0, size);
for (int i = 0; i < 6000; i++) {
pixels[4000 + 4 * i + 0] = 255;
pixels[4000 + 4 * i + 1] = 255;
pixels[4000 + 4 * i + 2] = 0;
pixels[4000 + 4 * i + 3] = 255;
}
buffer->unlock();
sk_sp<Bitmap> hardwareBitmap(Bitmap::createFrom(buffer->toAHardwareBuffer(),
SkColorSpace::MakeSRGB()));
sk_sp<SkShader> hardwareShader(createBitmapShader(*hardwareBitmap));
SkPoint center;
center.set(50, 50);
SkColor colors[2];
colors[0] = Color::Black;
colors[1] = Color::White;
sk_sp<SkShader> gradientShader = SkGradientShader::MakeRadial(
center, 50, colors, nullptr, 2, SkTileMode::kRepeat);
sk_sp<SkShader> compositeShader(
SkShaders::Blend(SkBlendMode::kDstATop, hardwareShader, gradientShader));
Paint paint;
paint.setShader(std::move(compositeShader));
canvas.drawRoundRect(0, 0, 400, 200, 10.0f, 10.0f, paint);
}
void doFrame(int frameNr) override {}
sk_sp<SkShader> createBitmapShader(Bitmap& bitmap) {
sk_sp<SkImage> image = bitmap.makeImage();
return image->makeShader(SkSamplingOptions());
}
};
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