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first try for pinned memory, complete untested

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This commit is contained in:
degasus 2013-02-01 17:04:27 +01:00
parent 3bf4ffe7fa
commit 2a1f592d82
2 changed files with 37 additions and 1 deletions
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37
Source/Plugins/Plugin_VideoOGL/Src/StreamBuffer.cpp
View file

@ -26,7 +26,7 @@ namespace OGL
static const u32 SYNC_POINTS = 16;
StreamBuffer::StreamBuffer(u32 type, size_t size, StreamType uploadType)
: m_uploadtype(uploadType), m_buffertype(type), m_size(size), m_iterator(0), m_used_iterator(0), m_free_iterator(0)
: m_uploadtype(uploadType), m_buffertype(type), m_size(size)
{
glGenBuffers(1, &m_buffer);
@ -61,6 +61,7 @@ void StreamBuffer::Alloc ( size_t size, u32 stride )
}
break;
case MAP_AND_SYNC:
case PINNED_MEMORY:
// insert waiting slots for used memory
for(u32 i=SLOT(m_used_iterator); i<SLOT(m_iterator); i++)
@ -101,6 +102,8 @@ void StreamBuffer::Alloc ( size_t size, u32 stride )
case BUFFERSUBDATA:
m_iterator_aligned = 0;
break;
case STREAM_DETECT:
break;
}
m_iterator = m_iterator_aligned;
}
@ -118,9 +121,14 @@ size_t StreamBuffer::Upload ( u8* data, size_t size )
ERROR_LOG(VIDEO, "buffer mapping failed");
}
break;
case PINNED_MEMORY:
memcpy(pointer+m_iterator, data, size);
break;
case BUFFERSUBDATA:
glBufferSubData(m_buffertype, m_iterator, size, data);
break;
case STREAM_DETECT:
break;
}
size_t ret = m_iterator;
m_iterator += size;
@ -129,6 +137,10 @@ size_t StreamBuffer::Upload ( u8* data, size_t size )
void StreamBuffer::Init()
{
m_iterator = 0;
m_used_iterator = 0;
m_free_iterator = 0;
switch(m_uploadtype) {
case MAP_AND_SYNC:
fences = new GLsync[SYNC_POINTS];
@ -140,6 +152,19 @@ void StreamBuffer::Init()
glBindBuffer(m_buffertype, m_buffer);
glBufferData(m_buffertype, m_size, NULL, GL_STREAM_DRAW);
break;
case PINNED_MEMORY:
fences = new GLsync[SYNC_POINTS];
for(u32 i=0; i<SYNC_POINTS; i++)
fences[i] = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
pointer = new u8[m_size];
glBindBuffer(GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, m_buffer);
glBufferData(GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, m_size, pointer, GL_STREAM_COPY);
glBindBuffer(GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, 0);
glBindBuffer(m_buffertype, m_buffer);
break;
case STREAM_DETECT:
break;
}
}
@ -155,6 +180,16 @@ void StreamBuffer::Shutdown()
case MAP_AND_ORPHAN:
case BUFFERSUBDATA:
break;
case PINNED_MEMORY:
for(u32 i=0; i<SYNC_POINTS; i++)
glDeleteSync(fences[i]);
delete [] fences;
glBindBuffer(m_buffertype, 0);
glFinish(); // ogl pipeline must be flushed, else this buffer can be in use
delete [] pointer;
break;
case STREAM_DETECT:
break;
}
}

1
Source/Plugins/Plugin_VideoOGL/Src/StreamBuffer.h
View file

@ -29,6 +29,7 @@ enum StreamType {
STREAM_DETECT,
MAP_AND_ORPHAN,
MAP_AND_SYNC,
PINNED_MEMORY,
BUFFERSUBDATA
};