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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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1
Source/Plugins/Plugin_VideoOGL/Src/ProgramShaderCache.cpp
View File

@ -208,6 +208,7 @@ void ProgramShaderCache::SetMultiVSConstant4fv(unsigned int offset, const float
void ProgramShaderCache::UploadConstants()
{
if(s_ubo_dirty) {
s_buffer->Alloc(s_ubo_buffer_size);
size_t offset = s_buffer->Upload(s_ubo_buffer, s_ubo_buffer_size);
glBindBufferRange(GL_UNIFORM_BUFFER, 1, s_buffer->getBuffer(), offset, s_vs_data_offset);
glBindBufferRange(GL_UNIFORM_BUFFER, 2, s_buffer->getBuffer(), offset + s_vs_data_offset, s_ubo_buffer_size - s_vs_data_offset);

19
Source/Plugins/Plugin_VideoOGL/Src/StreamBuffer.cpp
View File

@ -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;
}
}

4
Source/Plugins/Plugin_VideoOGL/Src/StreamBuffer.h
View File

@ -25,7 +25,8 @@
namespace OGL
{
enum StreamType {
MAP_AND_ORPHAN
MAP_AND_ORPHAN,
BUFFERSUBDATA
};
class StreamBuffer {
@ -34,6 +35,7 @@ public:
StreamBuffer(u32 type, size_t size);
~StreamBuffer();
void Alloc(size_t size);
size_t Upload(u8 *data, size_t size);
u32 getBuffer() { return m_buffer; }

18
Source/Plugins/Plugin_VideoOGL/Src/VertexManager.cpp
View File

@ -114,16 +114,18 @@ void VertexManager::DestroyDeviceObjects()
void VertexManager::PrepareDrawBuffers(u32 stride)
{
int vertex_data_size = IndexGenerator::GetNumVerts() * stride;
int triangle_index_size = IndexGenerator::GetTriangleindexLen();
int line_index_size = IndexGenerator::GetLineindexLen();
int point_index_size = IndexGenerator::GetPointindexLen();
u32 vertex_data_size = IndexGenerator::GetNumVerts() * stride;
u32 triangle_index_size = IndexGenerator::GetTriangleindexLen();
u32 line_index_size = IndexGenerator::GetLineindexLen();
u32 point_index_size = IndexGenerator::GetPointindexLen();
u32 index_size = (triangle_index_size+line_index_size+point_index_size) * sizeof(u16);
s_vertexBuffer->Align(stride);
s_vertexBuffer->Alloc(vertex_data_size);
u32 offset = s_vertexBuffer->Upload(LocalVBuffer, vertex_data_size);
s_baseVertex = offset / stride;
s_indexBuffer->Alloc(index_size);
if(triangle_index_size)
{
s_offset[0] = s_indexBuffer->Upload((u8*)TIBuffer, triangle_index_size * sizeof(u16));
@ -140,9 +142,9 @@ void VertexManager::PrepareDrawBuffers(u32 stride)
void VertexManager::Draw(u32 stride)
{
int triangle_index_size = IndexGenerator::GetTriangleindexLen();
int line_index_size = IndexGenerator::GetLineindexLen();
int point_index_size = IndexGenerator::GetPointindexLen();
u32 triangle_index_size = IndexGenerator::GetTriangleindexLen();
u32 line_index_size = IndexGenerator::GetLineindexLen();
u32 point_index_size = IndexGenerator::GetPointindexLen();
if (triangle_index_size > 0)
{
glDrawElementsBaseVertex(GL_TRIANGLES, triangle_index_size, GL_UNSIGNED_SHORT, (u8*)NULL+s_offset[0], s_baseVertex);