Stop doing nastly shit to OpenGL stream buffers.

Instead we keep the loaded vertices in CPU memory.

1 files changed, 21 insertions, 8 deletions

diff --git a/Source/Core/VideoBackends/OGL/VertexManager.cpp b/Source/Core/VideoBackends/OGL/VertexManager.cpp
index 1a162b1cde..5b89e0507e 100644
--- a/Source/Core/VideoBackends/OGL/VertexManager.cpp
+++ b/Source/Core/VideoBackends/OGL/VertexManager.cpp
@@ -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;
-
-	buffer = s_indexBuffer->Map(MAXIBUFFERSIZE * sizeof(u16));
-	IndexGenerator::Start((u16*)buffer.first);
-	s_index_offset = buffer.second;
+	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();
+
+		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)