LayerRenderer.h revision 8ce00301a023eecaeb8891ce906f67b513ebb42a 
1/*
2 * Copyright (C) 2011 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#ifndef ANDROID_HWUI_LAYER_RENDERER_H
18#define ANDROID_HWUI_LAYER_RENDERER_H
19
20#include <cutils/compiler.h>
21
22#include "OpenGLRenderer.h"
23#include "Layer.h"
24
25#include <SkBitmap.h>
26
27namespace android {
28namespace uirenderer {
29
30///////////////////////////////////////////////////////////////////////////////
31// Defines
32///////////////////////////////////////////////////////////////////////////////
33
34// Debug
35#if DEBUG_LAYER_RENDERER
36    #define LAYER_RENDERER_LOGD(...) ALOGD(__VA_ARGS__)
37#else
38    #define LAYER_RENDERER_LOGD(...)
39#endif
40
41///////////////////////////////////////////////////////////////////////////////
42// Renderer
43///////////////////////////////////////////////////////////////////////////////
44
45class LayerRenderer: public OpenGLRenderer {
46public:
47    ANDROID_API LayerRenderer(Layer* layer);
48    virtual ~LayerRenderer();
49
50    virtual void setViewport(int width, int height);
51    virtual status_t prepareDirty(float left, float top, float right, float bottom, bool opaque);
52    virtual status_t clear(float left, float top, float right, float bottom, bool opaque);
53    virtual void finish();
54
55    ANDROID_API static Layer* createTextureLayer(bool isOpaque);
56    ANDROID_API static Layer* createLayer(uint32_t width, uint32_t height, bool isOpaque = false);
57    ANDROID_API static bool resizeLayer(Layer* layer, uint32_t width, uint32_t height);
58    ANDROID_API static void updateTextureLayer(Layer* layer, uint32_t width, uint32_t height,
59            bool isOpaque, GLenum renderTarget, float* transform);
60    ANDROID_API static void destroyLayer(Layer* layer);
61    ANDROID_API static void destroyLayerDeferred(Layer* layer);
62    ANDROID_API static bool copyLayer(Layer* layer, SkBitmap* bitmap);
63
64    static void flushLayer(Layer* layer);
65
66protected:
67    virtual void ensureStencilBuffer();
68    virtual bool hasLayer();
69    virtual Region* getRegion();
70    virtual GLint getTargetFbo();
71    virtual bool suppressErrorChecks();
72
73private:
74    void generateMesh();
75
76    Layer* mLayer;
77}; // class LayerRenderer
78
79}; // namespace uirenderer
80}; // namespace android
81
82#endif // ANDROID_HWUI_LAYER_RENDERER_H
83