From f6be5fd39fdcc9fd992087303138f9b2cff7dfe0 Mon Sep 17 00:00:00 2001
From: Sergey Lipskiy <gonetz@ngs.ru>
Date: Thu, 17 Mar 2016 09:29:57 +0600
Subject: [PATCH] Fix bug with line calculation in gDPLoadBlock.

Fixed South Park Rally (All) - Gfx Issue #391
and probably other similar issues.
---
 src/gDP.cpp | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/gDP.cpp b/src/gDP.cpp
index 660797ab..4959cadb 100644
--- a/src/gDP.cpp
+++ b/src/gDP.cpp
@@ -625,9 +625,10 @@ void gDPLoadBlock(u32 tile, u32 uls, u32 ult, u32 lrs, u32 dxt)
 		u32 tmemAddr = gDP.loadTile->tmem;
 
 		if (dxt > 0) {
-			u32 line = (2047 + dxt) / dxt;
-			u32 bpl = line << 3;
-			u32 height = bytes / bpl;
+			const u32 widthInQWords = (bytes >> 3);
+			const u32 height = (widthInQWords * dxt) / 2048;
+			const u32 line = widthInQWords / height;
+			const u32 bpl = line << 3;
 
 			for (u32 y = 0; y < height; ++y) {
 				UnswapCopyWrap(RDRAM, address, (u8*)TMEM, tmemAddr << 3, 0xFFF, bpl);