RenderState.h revision 0b8d0677be2289bbc9e0b48c0878fb67d1cc0ebd 
1/*
2 * Copyright (C) 2014 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#ifndef RENDERSTATE_H
17#define RENDERSTATE_H
18
19#include "AssetAtlas.h"
20#include "Caches.h"
21#include "Glop.h"
22#include "renderstate/Blend.h"
23#include "renderstate/MeshState.h"
24#include "renderstate/OffscreenBufferPool.h"
25#include "renderstate/PixelBufferState.h"
26#include "renderstate/Scissor.h"
27#include "renderstate/Stencil.h"
28#include "utils/Macros.h"
29
30#include <set>
31#include <GLES2/gl2.h>
32#include <GLES2/gl2ext.h>
33#include <ui/Region.h>
34#include <utils/Mutex.h>
35#include <utils/Functor.h>
36#include <utils/RefBase.h>
37#include <private/hwui/DrawGlInfo.h>
38
39namespace android {
40namespace uirenderer {
41
42class Caches;
43class Layer;
44
45namespace renderthread {
46class CanvasContext;
47class RenderThread;
48}
49
50// TODO: Replace Cache's GL state tracking with this. For now it's more a thin
51// wrapper of Caches for users to migrate to.
52class RenderState {
53    PREVENT_COPY_AND_ASSIGN(RenderState);
54    friend class renderthread::RenderThread;
55    friend class Caches;
56public:
57    void onGLContextCreated();
58    void onGLContextDestroyed();
59
60    void flush(Caches::FlushMode flushMode);
61
62    void setViewport(GLsizei width, GLsizei height);
63    void getViewport(GLsizei* outWidth, GLsizei* outHeight);
64
65    void bindFramebuffer(GLuint fbo);
66    GLuint getFramebuffer() { return mFramebuffer; }
67    GLuint createFramebuffer();
68    void deleteFramebuffer(GLuint fbo);
69
70    void invokeFunctor(Functor* functor, DrawGlInfo::Mode mode, DrawGlInfo* info);
71
72    void debugOverdraw(bool enable, bool clear);
73
74    void registerLayer(Layer* layer) {
75        mActiveLayers.insert(layer);
76    }
77    void unregisterLayer(Layer* layer) {
78        mActiveLayers.erase(layer);
79    }
80
81    void registerCanvasContext(renderthread::CanvasContext* context) {
82        mRegisteredContexts.insert(context);
83    }
84
85    void unregisterCanvasContext(renderthread::CanvasContext* context) {
86        mRegisteredContexts.erase(context);
87    }
88
89    // TODO: This system is a little clunky feeling, this could use some
90    // more thinking...
91    void postDecStrong(VirtualLightRefBase* object);
92
93    void render(const Glop& glop, const Matrix4& orthoMatrix);
94
95    AssetAtlas& assetAtlas() { return mAssetAtlas; }
96    Blend& blend() { return *mBlend; }
97    MeshState& meshState() { return *mMeshState; }
98    Scissor& scissor() { return *mScissor; }
99    Stencil& stencil() { return *mStencil; }
100
101    OffscreenBufferPool& layerPool() { return mLayerPool; }
102
103    void dump();
104
105private:
106    void interruptForFunctorInvoke();
107    void resumeFromFunctorInvoke();
108
109    RenderState(renderthread::RenderThread& thread);
110    ~RenderState();
111
112
113    renderthread::RenderThread& mRenderThread;
114    Caches* mCaches = nullptr;
115
116    Blend* mBlend = nullptr;
117    MeshState* mMeshState = nullptr;
118    Scissor* mScissor = nullptr;
119    Stencil* mStencil = nullptr;
120
121    OffscreenBufferPool mLayerPool;
122
123    AssetAtlas mAssetAtlas;
124    std::set<Layer*> mActiveLayers;
125    std::set<renderthread::CanvasContext*> mRegisteredContexts;
126
127    GLsizei mViewportWidth;
128    GLsizei mViewportHeight;
129    GLuint mFramebuffer;
130
131    pthread_t mThreadId;
132};
133
134} /* namespace uirenderer */
135} /* namespace android */
136
137#endif /* RENDERSTATE_H */
138