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.
97 lines
2.8 KiB
C++
97 lines
2.8 KiB
C++
/*
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**
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** Copyright 2009, 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_BUFFER_ALLOCATOR_H
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#define ANDROID_BUFFER_ALLOCATOR_H
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#include <stdint.h>
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#include <cutils/native_handle.h>
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#include <utils/Errors.h>
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#include <utils/KeyedVector.h>
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#include <utils/threads.h>
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#include <utils/Singleton.h>
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#include <ui/PixelFormat.h>
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#include <hardware/gralloc.h>
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namespace android {
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// ---------------------------------------------------------------------------
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class String8;
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class GraphicBufferAllocator : public Singleton<GraphicBufferAllocator>
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{
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public:
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enum {
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USAGE_SW_READ_NEVER = GRALLOC_USAGE_SW_READ_NEVER,
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USAGE_SW_READ_RARELY = GRALLOC_USAGE_SW_READ_RARELY,
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USAGE_SW_READ_OFTEN = GRALLOC_USAGE_SW_READ_OFTEN,
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USAGE_SW_READ_MASK = GRALLOC_USAGE_SW_READ_MASK,
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USAGE_SW_WRITE_NEVER = GRALLOC_USAGE_SW_WRITE_NEVER,
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USAGE_SW_WRITE_RARELY = GRALLOC_USAGE_SW_WRITE_RARELY,
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USAGE_SW_WRITE_OFTEN = GRALLOC_USAGE_SW_WRITE_OFTEN,
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USAGE_SW_WRITE_MASK = GRALLOC_USAGE_SW_WRITE_MASK,
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USAGE_SOFTWARE_MASK = USAGE_SW_READ_MASK|USAGE_SW_WRITE_MASK,
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USAGE_HW_TEXTURE = GRALLOC_USAGE_HW_TEXTURE,
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USAGE_HW_RENDER = GRALLOC_USAGE_HW_RENDER,
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USAGE_HW_2D = GRALLOC_USAGE_HW_2D,
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USAGE_HW_MASK = GRALLOC_USAGE_HW_MASK
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};
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static inline GraphicBufferAllocator& get() { return getInstance(); }
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status_t alloc(uint32_t w, uint32_t h, PixelFormat format, int usage,
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buffer_handle_t* handle, int32_t* stride);
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status_t free(buffer_handle_t handle);
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void dump(String8& res) const;
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private:
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struct alloc_rec_t {
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uint32_t w;
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uint32_t h;
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PixelFormat format;
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uint32_t usage;
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void* vaddr;
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size_t size;
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};
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static Mutex sLock;
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static KeyedVector<buffer_handle_t, alloc_rec_t> sAllocList;
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friend class Singleton<GraphicBufferAllocator>;
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GraphicBufferAllocator();
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~GraphicBufferAllocator();
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mutable Mutex mLock;
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alloc_device_t *mAllocDev;
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};
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// ---------------------------------------------------------------------------
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}; // namespace android
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#endif // ANDROID_BUFFER_ALLOCATOR_H
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