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Stop doing nastly shit to OpenGL stream buffers.

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Instead we keep the loaded vertices in CPU memory.
This commit is contained in:
Scott Mansell
2015-01-24 14:37:20 +13:00
parent 5510c86b81
commit 14baf038e7
6 changed files with 79 additions and 54 deletions
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27
Source/Core/VideoBackends/OGL/VertexManager.cpp
View File

@ -43,6 +43,8 @@ static size_t s_index_offset;
VertexManager::VertexManager()
{
CreateDeviceObjects();
CpuVBuffer.resize(MAX_VBUFFER_SIZE);
CpuIBuffer.resize(MAX_IBUFFER_SIZE);
}
VertexManager::~VertexManager()
@ -81,14 +83,25 @@ void VertexManager::PrepareDrawBuffers(u32 stride)
void VertexManager::ResetBuffer(u32 stride)
{
auto buffer = s_vertexBuffer->Map(MAXVBUFFERSIZE, stride);
s_pCurBufferPointer = s_pBaseBufferPointer = buffer.first;
s_pEndBufferPointer = buffer.first + MAXVBUFFERSIZE;
s_baseVertex = buffer.second / stride;
if (CullAll)
{
// This buffer isn't getting sent to the GPU. Just allocate it on the cpu.
s_pCurBufferPointer = s_pBaseBufferPointer = CpuVBuffer.data();
s_pEndBufferPointer = s_pBaseBufferPointer + CpuVBuffer.size();
buffer = s_indexBuffer->Map(MAXIBUFFERSIZE * sizeof(u16));
IndexGenerator::Start((u16*)buffer.first);
s_index_offset = buffer.second;
IndexGenerator::Start((u16*)CpuIBuffer.data());
}
else
{
auto buffer = s_vertexBuffer->Map(MAXVBUFFERSIZE, stride);
s_pCurBufferPointer = s_pBaseBufferPointer = buffer.first;
s_pEndBufferPointer = buffer.first + MAXVBUFFERSIZE;
s_baseVertex = buffer.second / stride;
buffer = s_indexBuffer->Map(MAXIBUFFERSIZE * sizeof(u16));
IndexGenerator::Start((u16*)buffer.first);
s_index_offset = buffer.second;
}
}
void VertexManager::Draw(u32 stride)

4
Source/Core/VideoBackends/OGL/VertexManager.h
View File

@ -45,6 +45,10 @@ private:
void Draw(u32 stride);
void vFlush(bool useDstAlpha) override;
void PrepareDrawBuffers(u32 stride);
// Alternative buffers in CPU memory for primatives we are going to discard.
std::vector<u8> CpuVBuffer;
std::vector<u16> CpuIBuffer;
};
}