From 7a89faf13f1d02f9f5d2b01ffa33fe6e8b2c6d99 Mon Sep 17 00:00:00 2001
From: degasus <wickmarkus@web.de>
Date: Thu, 21 Feb 2013 11:36:10 +0100
Subject: [PATCH] converting the last vertices again instead of copying from
 buffer on buffer split

for mapping, this buffer must be write only, so we cannot copy anthing.
converting again needs more cpu, but should happen rarely
---
 Source/Core/VideoCommon/Src/VertexLoader.cpp | 63 +++++++++++---------
 Source/Core/VideoCommon/Src/VertexLoader.h   |  1 +
 2 files changed, 36 insertions(+), 28 deletions(-)

diff --git a/Source/Core/VideoCommon/Src/VertexLoader.cpp b/Source/Core/VideoCommon/Src/VertexLoader.cpp
index 5bffab8ee7..7eb410fc43 100644
--- a/Source/Core/VideoCommon/Src/VertexLoader.cpp
+++ b/Source/Core/VideoCommon/Src/VertexLoader.cpp
@@ -571,7 +571,6 @@ void VertexLoader::RunVertices(int vtx_attr_group, int primitive, int count)
 		if (remainingVerts < granularity) {
 			INCSTAT(stats.thisFrame.numBufferSplits);
 			// This buffer full - break current primitive and flush, to switch to the next buffer.
-			u8* plastptr = VertexManager::s_pCurBufferPointer;
 			if (v - startv > 0)
 				VertexManager::AddVertices(primitive, v - startv + extraverts);
 			VertexManager::Flush();
@@ -581,27 +580,28 @@ void VertexLoader::RunVertices(int vtx_attr_group, int primitive, int count)
 				case 3: // triangle strip, copy last two vertices
 					// a little trick since we have to keep track of signs
 					if (v & 1) {
-						memcpy_gc(VertexManager::s_pCurBufferPointer, plastptr-2*native_stride, native_stride);
-						memcpy_gc(VertexManager::s_pCurBufferPointer+native_stride, plastptr-native_stride*2, 2*native_stride);
-						VertexManager::s_pCurBufferPointer += native_stride*3;
+						g_pVideoData -= m_VertexSize*2;
+						ConvertVertices(1);
+						g_pVideoData -= m_VertexSize;
+						ConvertVertices(2);
 						extraverts = 3;
 					}
 					else {
-						memcpy_gc(VertexManager::s_pCurBufferPointer, plastptr-native_stride*2, native_stride*2);
-						VertexManager::s_pCurBufferPointer += native_stride*2;
+						g_pVideoData -= m_VertexSize*2;
+						ConvertVertices(2);
 						extraverts = 2;
 					}
 					break;
 				case 4: // tri fan, copy first and last vert
-					memcpy_gc(VertexManager::s_pCurBufferPointer, plastptr-native_stride*(v-startv+extraverts), native_stride);
-					VertexManager::s_pCurBufferPointer += native_stride;
-					memcpy_gc(VertexManager::s_pCurBufferPointer, plastptr-native_stride, native_stride);
-					VertexManager::s_pCurBufferPointer += native_stride;
+					g_pVideoData -= m_VertexSize*(v-startv+extraverts);
+					ConvertVertices(1);
+					g_pVideoData += m_VertexSize*(v-startv+extraverts-2);
+					ConvertVertices(1);
 					extraverts = 2;
 					break;
 				case 6: // line strip
-					memcpy_gc(VertexManager::s_pCurBufferPointer, plastptr-native_stride, native_stride);
-					VertexManager::s_pCurBufferPointer += native_stride;
+					g_pVideoData -= m_VertexSize*1;
+					ConvertVertices(1);
 					extraverts = 1;
 					break;
 				default:
@@ -615,22 +615,8 @@ void VertexLoader::RunVertices(int vtx_attr_group, int primitive, int count)
 		if (count - v < remainingVerts)
 			remainingVerts = count - v;
 
-	#ifdef USE_JIT
-		if (remainingVerts > 0) {
-			loop_counter = remainingVerts;
-			((void (*)())(void*)m_compiledCode)();
-		}
-	#else
-		for (int s = 0; s < remainingVerts; s++)
-		{
-			tcIndex = 0;
-			colIndex = 0;
-			s_texmtxwrite = s_texmtxread = 0;
-			for (int i = 0; i < m_numPipelineStages; i++)
-				m_PipelineStages[i]();
-			PRIM_LOG("\n");
-		}
-	#endif
+		ConvertVertices(remainingVerts);
+
 		v += remainingVerts;
 	}
 
@@ -639,6 +625,27 @@ void VertexLoader::RunVertices(int vtx_attr_group, int primitive, int count)
 }
 
 
+void VertexLoader::ConvertVertices ( int count )
+{
+#ifdef USE_JIT
+	if (count > 0) {
+		loop_counter = count;
+		((void (*)())(void*)m_compiledCode)();
+	}
+#else
+	for (int s = 0; s < count; s++)
+	{
+		tcIndex = 0;
+		colIndex = 0;
+		s_texmtxwrite = s_texmtxread = 0;
+		for (int i = 0; i < m_numPipelineStages; i++)
+			m_PipelineStages[i]();
+		PRIM_LOG("\n");
+	}
+#endif
+}
+
+
 
 
 void VertexLoader::RunCompiledVertices(int vtx_attr_group, int primitive, int count, u8* Data)
diff --git a/Source/Core/VideoCommon/Src/VertexLoader.h b/Source/Core/VideoCommon/Src/VertexLoader.h
index 98a57cb9ff..4f4fc19e99 100644
--- a/Source/Core/VideoCommon/Src/VertexLoader.h
+++ b/Source/Core/VideoCommon/Src/VertexLoader.h
@@ -119,6 +119,7 @@ private:
 	void SetVAT(u32 _group0, u32 _group1, u32 _group2);
 
 	void CompileVertexTranslator();
+	void ConvertVertices(int count);
 
 	void WriteCall(TPipelineFunction);