Merge pull request #1105 from jackchentwkh/add_pushbuffer_fixup

Add fixup for pushbuffer.

src/CxbxKrnl/EmuD3D8/PushBuffer.cpp

@@ -128,15 +128,50 @@ UINT XTL::DxbxFVFToVertexSizeInBytes(DWORD dwFVF, BOOL bIncludeTextures)
 	return Result;
 }
 
+//Apply fixup data to pushbuffer. Code comes from Dxbx
+void EmuFixupPushBuffer
+(
+	UINT8       *pPushBuffer,
+	UINT8            *pFixup
+)
+{
+	UINT32 SizeInBytes = 0;
+	UINT32 OffsetInBytes = 0;
+
+	while ((SizeInBytes = *(UINT32*)pFixup) != 0xFFFFFFFF) {
+
+		pFixup += 4;
+		OffsetInBytes = *(UINT32*)pFixup;
+		pFixup += 4;
+
+		memcpy(pPushBuffer + OffsetInBytes, pFixup, SizeInBytes);
+		pFixup += SizeInBytes;
+	}
+
+	/*
+	When IDirect3DDevice8::RunPushBuffer is called with a fix - up object specified,
+	it will parse the fix - up data pointed to by pFixup and with a byte offset of Run.
+	The fix - up data is encoded as follows.The first DWORD is the size, in bytes,
+	of the push - buffer fix - up to be modified.The second DWORD is the offset, in bytes,
+	from the start of the push - buffer where the fix - up is to be modified.
+	The subsequent DWORDS are the data to be copied.This encoding repeats for every fix - up to be done,
+	until it terminates with a size value of 0xffffffff.
+	The offsets must be in an increasing order.
+	*/
+	return;
+}
+
 void XTL::EmuExecutePushBuffer
 (
     X_D3DPushBuffer       *pPushBuffer,
     X_D3DFixup            *pFixup
 )
 {
-    if(pFixup != NULL)
-        CxbxKrnlCleanup("PushBuffer has fixups\n");
-
+	if (pFixup != NULL)
+	{
+		EmuWarning("PushBuffer has fixups\n");
+		EmuFixupPushBuffer((UINT8*)pPushBuffer, (UINT8*)pFixup);
+	}
 #ifdef _DEBUG_TRACK_PB
 	DbgDumpPushBuffer((DWORD*)pPushBuffer->Data, pPushBuffer->Size);
 #endif