From 50077afa22a99cd4f4985b8017ef3d0f8c9a2ad6 Mon Sep 17 00:00:00 2001
From: "SND\\shalma_cp" <SND\shalma_cp@e17a0e51-4ae3-4d35-97c3-1a29b211df97>
Date: Fri, 12 Nov 2010 14:00:21 +0000
Subject: Tekken 3 - gpu.c - Add infinite dma loop check to chain slice - Fixes
 post-replay flicker

git-svn-id: https://pcsxr.svn.codeplex.com/svn/pcsxr@59480 e17a0e51-4ae3-4d35-97c3-1a29b211df97
---
 libpcsxcore/gpu.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

(limited to 'libpcsxcore/gpu.c')

diff --git a/libpcsxcore/gpu.c b/libpcsxcore/gpu.c
index 767d332e..8d33639f 100644
--- a/libpcsxcore/gpu.c
+++ b/libpcsxcore/gpu.c
@@ -42,6 +42,7 @@ extern unsigned int hSyncCount;
 
 u32 chain_ptr_addr;
 u32 chain_ptr_mem;
+u8 chain_infinite_loop;
 
 /*
 DMA2 Chain slicing
@@ -86,6 +87,7 @@ static u32 gpuDmaChainSize(u32 addr) {
 
 	// initial linked list ptr (word)
 	size = 1;
+	chain_infinite_loop = 0;
 
 	do {
 		addr &= 0x1ffffc;
@@ -95,7 +97,11 @@ static u32 gpuDmaChainSize(u32 addr) {
 
 
 		//if (DMACommandCounter++ > 2000000) break;
-		if (CheckForEndlessLoop(addr)) break;
+		if (CheckForEndlessLoop(addr))
+		{
+			chain_infinite_loop = 1;
+			break;
+		}
 
 
 		// # 32-bit blocks to transfer
@@ -109,7 +115,7 @@ static u32 gpuDmaChainSize(u32 addr) {
 
 	chain_ptr_addr = addr;
 
-	if( addr != 0xffffff )
+	if( !chain_infinite_loop && addr != 0xffffff )
 	{
 		// save data at stop ptr
 		chain_ptr_mem = psxMu32( addr );
@@ -229,8 +235,8 @@ void gpuInterrupt() {
 #endif
 
 
-		// check valid data left - no Tekken 3 check yet
-		if( chain_ptr_addr != 0xffffff )
+		// check valid data left
+		if( !chain_infinite_loop && chain_ptr_addr != 0xffffff )
 		{
 			// put back old value first
 			psxMu32ref( chain_ptr_addr ) = chain_ptr_mem;
-- 
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