1/*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "TestSceneBase.h"
18#include "utils/Color.h"
19
20#include <SkGradientShader.h>
21#include <SkImagePriv.h>
22#include <ui/PixelFormat.h>
23
24class HwBitmapInCompositeShader;
25
26static TestScene::Registrar _HwBitmapInCompositeShader(TestScene::Info{
27        "hwbitmapcompositeshader", "Draws composite shader with hardware bitmap",
28        TestScene::simpleCreateScene<HwBitmapInCompositeShader>});
29
30class HwBitmapInCompositeShader : public TestScene {
31public:
32    sp<RenderNode> card;
33    void createContent(int width, int height, Canvas& canvas) override {
34        canvas.drawColor(Color::Red_500, SkBlendMode::kSrcOver);
35
36        uint32_t usage = GraphicBuffer::USAGE_HW_TEXTURE | GraphicBuffer::USAGE_SW_READ_NEVER |
37                         GRALLOC_USAGE_SW_WRITE_RARELY;
38
39        sp<GraphicBuffer> buffer = new GraphicBuffer(400, 200, PIXEL_FORMAT_RGBA_8888, usage);
40
41        unsigned char* pixels = nullptr;
42        buffer->lock(GraphicBuffer::USAGE_SW_WRITE_RARELY, ((void**)&pixels));
43        size_t size =
44                bytesPerPixel(buffer->getPixelFormat()) * buffer->getStride() * buffer->getHeight();
45        memset(pixels, 0, size);
46        for (int i = 0; i < 6000; i++) {
47            pixels[4000 + 4 * i + 0] = 255;
48            pixels[4000 + 4 * i + 1] = 255;
49            pixels[4000 + 4 * i + 2] = 0;
50            pixels[4000 + 4 * i + 3] = 255;
51        }
52        buffer->unlock();
53        sk_sp<Bitmap> hardwareBitmap(Bitmap::createFrom(buffer));
54        sk_sp<SkShader> hardwareShader(createBitmapShader(*hardwareBitmap));
55
56        SkPoint center;
57        center.set(50, 50);
58        SkColor colors[2];
59        colors[0] = Color::Black;
60        colors[1] = Color::White;
61        sk_sp<SkShader> gradientShader = SkGradientShader::MakeRadial(
62                center, 50, colors, nullptr, 2, SkShader::TileMode::kRepeat_TileMode);
63
64        sk_sp<SkShader> compositeShader(
65                SkShader::MakeComposeShader(hardwareShader, gradientShader, SkBlendMode::kDstATop));
66
67        SkPaint paint;
68        paint.setShader(std::move(compositeShader));
69        canvas.drawRoundRect(0, 0, 400, 200, 10.0f, 10.0f, paint);
70    }
71
72    void doFrame(int frameNr) override {}
73
74    sk_sp<SkShader> createBitmapShader(Bitmap& bitmap) {
75        sk_sp<SkColorFilter> colorFilter;
76        sk_sp<SkImage> image = bitmap.makeImage(&colorFilter);
77        return image->makeShader(SkShader::TileMode::kClamp_TileMode,
78                                 SkShader::TileMode::kClamp_TileMode);
79    }
80};
81