dolphin/Source/Core/VideoBackends/OGL/StreamBuffer.h

53 lines
1.2 KiB
C++

// Copyright 2013 Dolphin Emulator Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#pragma once
#include <utility>
#include "VideoBackends/OGL/FramebufferManager.h"
#include "VideoBackends/OGL/GLUtil.h"
#include "VideoCommon/VideoCommon.h"
namespace OGL
{
class StreamBuffer {
public:
static StreamBuffer* Create(u32 type, size_t size);
virtual ~StreamBuffer();
/* This mapping function will return a pair of:
* - the pointer to the mapped buffer
* - the offset into the real gpu buffer (always multiple of stride)
* On mapping, the maximum of size for allocation has to be set.
* The size really pushed into this fifo only has to be known on Unmapping.
* Mapping invalidates the current buffer content,
* so it isn't allowed to access the old content any more.
*/
virtual std::pair<u8*, size_t> Map(size_t size, u32 stride = 0) = 0;
virtual void Unmap(size_t used_size) = 0;
const u32 m_buffer;
protected:
StreamBuffer(u32 type, size_t size);
void CreateFences();
void DeleteFences();
void AllocMemory(size_t size);
void Align(u32 stride);
const u32 m_buffertype;
const size_t m_size;
size_t m_iterator;
size_t m_used_iterator;
size_t m_free_iterator;
private:
GLsync *fences;
};
}