VkLayer.h revision 3e9999bd866fac71c72e6b484a9836c87c328a08 
1/*
2 * Copyright (C) 2017 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#pragma once
18
19#include "Layer.h"
20
21#include <SkImage.h>
22
23namespace android {
24namespace uirenderer {
25/**
26 * A layer has dimensions and is backed by a VkImage.
27 */
28class VkLayer : public Layer {
29public:
30    VkLayer(RenderState& renderState, uint32_t layerWidth, uint32_t layerHeight,
31            SkColorFilter* colorFilter, int alpha, SkBlendMode mode, bool blend)
32            : Layer(renderState, Api::Vulkan, colorFilter, alpha, mode)
33            , mWidth(layerWidth)
34            , mHeight(layerHeight)
35            , mBlend(blend) {}
36
37    virtual ~VkLayer() {}
38
39    uint32_t getWidth() const override {
40        return mWidth;
41    }
42
43    uint32_t getHeight() const override {
44        return mHeight;
45    }
46
47    void setSize(uint32_t width, uint32_t height) override {
48        mWidth = width;
49        mHeight = height;
50    }
51
52    void setBlend(bool blend) override {
53        mBlend = blend;
54    }
55
56    bool isBlend() const override {
57        return mBlend;
58    }
59
60    sk_sp<SkImage> getImage() {
61        return mImage;
62    }
63
64    void updateTexture();
65
66    // If we've destroyed the vulkan context (VkInstance, VkDevice, etc.), we must make sure to
67    // destroy any VkImages that were made with that context.
68    void onVkContextDestroyed();
69
70private:
71    int mWidth;
72    int mHeight;
73    bool mBlend;
74
75   sk_sp<SkImage> mImage;
76
77}; // struct VkLayer
78
79}; // namespace uirenderer
80}; // namespace android
81