3330b20303
When EGLImage extension is not available, SurfaceFlinger will fallback to using glTexImage2D and glTexSubImage2D instead, which requires 50% more memory and an extra copy. However this code path has never been exercised and had some bugs which this patch fix. Mainly the scale factor wasn't computed right when falling back on glDrawElements. We also fallback to this mode of operation if a buffer doesn't have the adequate usage bits for EGLImage usage. This changes only code that is currently not executed. Some refactoring was needed to keep the change clean. This doesn't change anything functionaly.
131 lines
4.0 KiB
C++
131 lines
4.0 KiB
C++
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_LAYER_H
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#define ANDROID_LAYER_H
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#include <stdint.h>
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#include <sys/types.h>
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#include <ui/GraphicBuffer.h>
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#include <ui/PixelFormat.h>
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#include <pixelflinger/pixelflinger.h>
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#include <EGL/egl.h>
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#include <EGL/eglext.h>
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#include <GLES/gl.h>
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#include <GLES/glext.h>
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#include "LayerBase.h"
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#include "Transform.h"
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namespace android {
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// ---------------------------------------------------------------------------
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class Client;
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class FreezeLock;
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// ---------------------------------------------------------------------------
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const size_t NUM_BUFFERS = 2;
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class Layer : public LayerBaseClient
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{
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public:
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static const uint32_t typeInfo;
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static const char* const typeID;
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virtual char const* getTypeID() const { return typeID; }
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virtual uint32_t getTypeInfo() const { return typeInfo; }
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Layer(SurfaceFlinger* flinger, DisplayID display,
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const sp<Client>& client, int32_t i);
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virtual ~Layer();
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status_t setBuffers(uint32_t w, uint32_t h,
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PixelFormat format, uint32_t flags=0);
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void setDrawingSize(uint32_t w, uint32_t h);
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virtual void onDraw(const Region& clip) const;
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virtual uint32_t doTransaction(uint32_t transactionFlags);
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virtual void lockPageFlip(bool& recomputeVisibleRegions);
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virtual void unlockPageFlip(const Transform& planeTransform, Region& outDirtyRegion);
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virtual void finishPageFlip();
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virtual bool needsBlending() const { return mNeedsBlending; }
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virtual bool needsDithering() const { return mNeedsDithering; }
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virtual bool isSecure() const { return mSecure; }
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virtual sp<Surface> createSurface() const;
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virtual status_t ditch();
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// only for debugging
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inline sp<GraphicBuffer> getBuffer(int i) { return mBuffers[i]; }
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// only for debugging
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inline const sp<FreezeLock>& getFreezeLock() const { return mFreezeLock; }
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// only for debugging
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inline PixelFormat pixelFormat() const { return mFormat; }
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private:
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inline sp<GraphicBuffer> getFrontBuffer() {
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return mBuffers[mFrontBufferIndex];
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}
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void reloadTexture(const Region& dirty);
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uint32_t getEffectiveUsage(uint32_t usage) const;
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sp<GraphicBuffer> requestBuffer(int index, int usage);
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void destroy();
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class SurfaceLayer : public LayerBaseClient::Surface {
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public:
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SurfaceLayer(const sp<SurfaceFlinger>& flinger,
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SurfaceID id, const sp<Layer>& owner);
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~SurfaceLayer();
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private:
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virtual sp<GraphicBuffer> requestBuffer(int index, int usage);
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sp<Layer> getOwner() const {
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return static_cast<Layer*>(Surface::getOwner().get());
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}
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};
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friend class SurfaceLayer;
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sp<Surface> mSurface;
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bool mSecure;
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int32_t mFrontBufferIndex;
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bool mNeedsBlending;
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bool mNeedsDithering;
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Region mPostedDirtyRegion;
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sp<FreezeLock> mFreezeLock;
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PixelFormat mFormat;
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// protected by mLock
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sp<GraphicBuffer> mBuffers[NUM_BUFFERS];
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Texture mTextures[NUM_BUFFERS];
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uint32_t mWidth;
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uint32_t mHeight;
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mutable Mutex mLock;
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};
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// ---------------------------------------------------------------------------
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}; // namespace android
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#endif // ANDROID_LAYER_H
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