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implement streaming by bufferSubData, split upload and allocation in ringbuffer

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This commit is contained in:
degasus
2013-02-01 12:30:08 +01:00
parent 30170575c8
commit 878bd7f26c
4 changed files with 31 additions and 11 deletions
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19
Source/Plugins/Plugin_VideoOGL/Src/StreamBuffer.cpp
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@ -47,7 +47,7 @@ void StreamBuffer::Align ( u32 stride )
}
}
size_t StreamBuffer::Upload ( u8* data, size_t size )
void StreamBuffer::Alloc ( size_t size )
{
switch(m_uploadtype) {
case MAP_AND_ORPHAN:
@ -55,6 +55,17 @@ size_t StreamBuffer::Upload ( u8* data, size_t size )
glBufferData(m_buffertype, m_size, NULL, GL_STREAM_DRAW);
m_iterator = 0;
}
break;
case BUFFERSUBDATA:
m_iterator = 0;
break;
}
}
size_t StreamBuffer::Upload ( u8* data, size_t size )
{
switch(m_uploadtype) {
case MAP_AND_ORPHAN:
pointer = (u8*)glMapBufferRange(m_buffertype, m_iterator, size, GL_MAP_WRITE_BIT | GL_MAP_UNSYNCHRONIZED_BIT);
if(pointer) {
memcpy(pointer, data, size);
@ -63,17 +74,20 @@ size_t StreamBuffer::Upload ( u8* data, size_t size )
ERROR_LOG(VIDEO, "buffer mapping failed");
}
break;
case BUFFERSUBDATA:
glBufferSubData(m_buffertype, m_iterator, size, data);
break;
}
size_t ret = m_iterator;
m_iterator += size;
return ret;
}
void StreamBuffer::Init()
{
switch(m_uploadtype) {
case MAP_AND_ORPHAN:
case BUFFERSUBDATA:
glBindBuffer(m_buffertype, m_buffer);
glBufferData(m_buffertype, m_size, NULL, GL_STREAM_DRAW);
break;
@ -84,6 +98,7 @@ void StreamBuffer::Shutdown()
{
switch(m_uploadtype) {
case MAP_AND_ORPHAN:
case BUFFERSUBDATA:
break;
}
}