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      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 "Caches.h"
     20 #include "Glop.h"
     21 #include "renderstate/Blend.h"
     22 #include "renderstate/MeshState.h"
     23 #include "renderstate/OffscreenBufferPool.h"
     24 #include "renderstate/PixelBufferState.h"
     25 #include "renderstate/Scissor.h"
     26 #include "renderstate/Stencil.h"
     27 #include "utils/Macros.h"
     28 
     29 #include <GLES2/gl2.h>
     30 #include <GLES2/gl2ext.h>
     31 #include <private/hwui/DrawGlInfo.h>
     32 #include <ui/Region.h>
     33 #include <utils/Functor.h>
     34 #include <utils/Mutex.h>
     35 #include <utils/RefBase.h>
     36 #include <set>
     37 
     38 class GrContext;
     39 
     40 namespace android {
     41 namespace uirenderer {
     42 
     43 class Caches;
     44 class Layer;
     45 class DeferredLayerUpdater;
     46 
     47 namespace renderthread {
     48 class CacheManager;
     49 class CanvasContext;
     50 class RenderThread;
     51 }
     52 
     53 // TODO: Replace Cache's GL state tracking with this. For now it's more a thin
     54 // wrapper of Caches for users to migrate to.
     55 class RenderState {
     56     PREVENT_COPY_AND_ASSIGN(RenderState);
     57     friend class renderthread::RenderThread;
     58     friend class Caches;
     59     friend class renderthread::CacheManager;
     60 
     61 public:
     62     void onGLContextCreated();
     63     void onGLContextDestroyed();
     64 
     65     void onVkContextCreated();
     66     void onVkContextDestroyed();
     67 
     68     void flush(Caches::FlushMode flushMode);
     69     void onBitmapDestroyed(uint32_t pixelRefId);
     70 
     71     void setViewport(GLsizei width, GLsizei height);
     72     void getViewport(GLsizei* outWidth, GLsizei* outHeight);
     73 
     74     void bindFramebuffer(GLuint fbo);
     75     GLuint getFramebuffer() { return mFramebuffer; }
     76     GLuint createFramebuffer();
     77     void deleteFramebuffer(GLuint fbo);
     78 
     79     void invokeFunctor(Functor* functor, DrawGlInfo::Mode mode, DrawGlInfo* info);
     80 
     81     void debugOverdraw(bool enable, bool clear);
     82 
     83     void registerLayer(Layer* layer) { mActiveLayers.insert(layer); }
     84     void unregisterLayer(Layer* layer) { mActiveLayers.erase(layer); }
     85 
     86     void registerCanvasContext(renderthread::CanvasContext* context) {
     87         mRegisteredContexts.insert(context);
     88     }
     89 
     90     void unregisterCanvasContext(renderthread::CanvasContext* context) {
     91         mRegisteredContexts.erase(context);
     92     }
     93 
     94     void registerDeferredLayerUpdater(DeferredLayerUpdater* layerUpdater) {
     95         mActiveLayerUpdaters.insert(layerUpdater);
     96     }
     97 
     98     void unregisterDeferredLayerUpdater(DeferredLayerUpdater* layerUpdater) {
     99         mActiveLayerUpdaters.erase(layerUpdater);
    100     }
    101 
    102     // TODO: This system is a little clunky feeling, this could use some
    103     // more thinking...
    104     void postDecStrong(VirtualLightRefBase* object);
    105 
    106     void render(const Glop& glop, const Matrix4& orthoMatrix, bool overrideDisableBlending);
    107 
    108     Blend& blend() { return *mBlend; }
    109     MeshState& meshState() { return *mMeshState; }
    110     Scissor& scissor() { return *mScissor; }
    111     Stencil& stencil() { return *mStencil; }
    112 
    113     OffscreenBufferPool& layerPool() { return *mLayerPool; }
    114 
    115     GrContext* getGrContext() const;
    116 
    117     void dump();
    118 
    119 private:
    120     void interruptForFunctorInvoke();
    121     void resumeFromFunctorInvoke();
    122     void destroyLayersInUpdater();
    123 
    124     explicit RenderState(renderthread::RenderThread& thread);
    125     ~RenderState();
    126 
    127     renderthread::RenderThread& mRenderThread;
    128     Caches* mCaches = nullptr;
    129 
    130     Blend* mBlend = nullptr;
    131     MeshState* mMeshState = nullptr;
    132     Scissor* mScissor = nullptr;
    133     Stencil* mStencil = nullptr;
    134 
    135     OffscreenBufferPool* mLayerPool = nullptr;
    136 
    137     std::set<Layer*> mActiveLayers;
    138     std::set<DeferredLayerUpdater*> mActiveLayerUpdaters;
    139     std::set<renderthread::CanvasContext*> mRegisteredContexts;
    140 
    141     GLsizei mViewportWidth;
    142     GLsizei mViewportHeight;
    143     GLuint mFramebuffer;
    144 
    145     pthread_t mThreadId;
    146 };
    147 
    148 } /* namespace uirenderer */
    149 } /* namespace android */
    150 
    151 #endif /* RENDERSTATE_H */
    152