From 02a62d9103ce572d33e6c74b14f2de48846bc05e Mon Sep 17 00:00:00 2001
From: thoduv <thoduv@users.sf.net>
Date: Mon, 9 Jul 2007 15:44:49 +0000
Subject: [PATCH] I think this fixes the "odd offset problem" for 16 colors
 text bg (see sgstair's tests). (I hope I didn't broke something...)

---
 desmume/src/GPU.c | 32 ++++++++++++++++++++++++++++++--
 1 file changed, 30 insertions(+), 2 deletions(-)

diff --git a/desmume/src/GPU.c b/desmume/src/GPU.c
index 4329e667b..93f7bb8ce 100644
--- a/desmume/src/GPU.c
+++ b/desmume/src/GPU.c
@@ -952,10 +952,24 @@ INLINE void renderline_textBG(const GPU * gpu, u8 num, u8 * dst, u32 Y, u16 XBG,
 				
 				if(tileentry.bits.HFlip)
 				{
+					u8 currLine;
+					
 					line += (3 - ((xoff&7)>>1));
+					
+					if((!(7 - (xoff & 7)) & 1))
+					{
+						currLine = *line;
+						if (currLine&0xF) 
+						{
+							color = T1ReadWord(pal, ((currLine&0xF) + tilePalette) << 1);
+							gpu->setFinalColor(gpu,0,num,dst,color,x,Y);
+						}
+						dst += 2; x++; xoff++;
+						line--;
+					}
 					for(; x < xfin; line --) 
 					{	
-						u8 currLine = *line;
+						currLine = *line;
 
 						if (currLine>>4) 
 						{
@@ -972,10 +986,24 @@ INLINE void renderline_textBG(const GPU * gpu, u8 num, u8 * dst, u32 Y, u16 XBG,
 						dst += 2; x++; xoff++;
 					}
 				} else {
+					u8 currLine;
+					
 					line += ((xoff&7)>>1);
+					
+					if(xoff & 1)
+					{
+						currLine = *line;
+						if (currLine>>4) 
+						{
+							color = T1ReadWord(pal, ((currLine>>4) + tilePalette) << 1);
+							gpu->setFinalColor(gpu,0,num,dst,color,x,Y);
+						}
+						dst += 2; x++; xoff++;
+						line++;
+					}
 					for(; x < xfin; line ++) 
 					{
-						u8 currLine = *line;
+						currLine = *line;
 
 						if (currLine&0xF) 
 						{