VideoCommon: Cull vertices on the CPU

1 files changed, 20 insertions, 0 deletions

diff --git a/Source/Core/VideoCommon/VertexManagerBase.cpp b/Source/Core/VideoCommon/VertexManagerBase.cpp
index 88d7c47fba..88bdfccb24 100644
--- a/Source/Core/VideoCommon/VertexManagerBase.cpp
+++ b/Source/Core/VideoCommon/VertexManagerBase.cpp
@@ -104,6 +104,7 @@ VertexManagerBase::~VertexManagerBase() = default;
 bool VertexManagerBase::Initialize()
 {
   m_index_generator.Init();
+  m_cpu_cull.Init();
   return true;
 }
 
@@ -117,6 +118,13 @@ void VertexManagerBase::AddIndices(OpcodeDecoder::Primitive primitive, u32 num_v
   m_index_generator.AddIndices(primitive, num_vertices);
 }
 
+bool VertexManagerBase::AreAllVerticesCulled(VertexLoaderBase* loader,
+                                             OpcodeDecoder::Primitive primitive, const u8* src,
+                                             u32 count)
+{
+  return m_cpu_cull.AreAllVerticesCulled(loader, primitive, src, count);
+}
+
 DataReader VertexManagerBase::PrepareForAdditionalData(OpcodeDecoder::Primitive primitive,
                                                        u32 count, u32 stride, bool cullall)
 {
@@ -185,6 +193,16 @@ DataReader VertexManagerBase::PrepareForAdditionalData(OpcodeDecoder::Primitive
   return DataReader(m_cur_buffer_pointer, m_end_buffer_pointer);
 }
 
+DataReader VertexManagerBase::DisableCullAll(u32 stride)
+{
+  if (m_cull_all)
+  {
+    m_cull_all = false;
+    ResetBuffer(stride);
+  }
+  return DataReader(m_cur_buffer_pointer, m_end_buffer_pointer);
+}
+
 void VertexManagerBase::FlushData(u32 count, u32 stride)
 {
   m_cur_buffer_pointer += count * stride;
@@ -546,6 +564,8 @@ void VertexManagerBase::Flush()
     // Now the vertices can be flushed to the GPU. Everything following the CommitBuffer() call
     // must be careful to not upload any utility vertices, as the binding will be lost otherwise.
     const u32 num_indices = m_index_generator.GetIndexLen();
+    if (num_indices == 0)
+      return;
     u32 base_vertex, base_index;
     CommitBuffer(m_index_generator.GetNumVerts(),
                  VertexLoaderManager::GetCurrentVertexFormat()->GetVertexStride(), num_indices,