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