commit e890e8177d4b95793f9d18073ccc39cd31c456a5
author Geert Uytterhoeven <geert@linux-m68k.org> Thu Feb 21 20:43:22 2008 +0000
committer Geert Uytterhoeven <geert@linux-m68k.org> Thu Feb 21 20:43:22 2008 +0000
tree 3aec25f8ab5e6a0cc8386f977706466601de2c8c
parent fca3078db2ccba41e2c435d6b66375b54877e699

Fix brown paper bag bug in Atari interleaved bitplanes code

drawops/iplan2.c

diff --git a/drawops/iplan2.c b/drawops/iplan2.c
index e02006e..90dcb39 100644
--- a/drawops/iplan2.c
+++ b/drawops/iplan2.c
@@ -32,7 +32,7 @@
 
 static void iplan2_setpixel(u32 x, u32 y, pixel_t pixel)
 {
-    u16 *p = (u16 *)(screen+y*next_line+fb_var.bits_per_pixel*(x & -16));
+    u16 *p = (u16 *)(screen+y*next_line+fb_var.bits_per_pixel*(x/16*2));
     u16 mask = 0x8000 >> (x & 15);
     int i = fb_var.bits_per_pixel;
     while (1) {
@@ -49,7 +49,7 @@
 static pixel_t iplan2_getpixel(u32 x, u32 y)
 {
     pixel_t pixel = 0, bit = 1;
-    u16 *p = (u16 *)(screen+y*next_line+fb_var.bits_per_pixel*(x & -16));
+    u16 *p = (u16 *)(screen+y*next_line+fb_var.bits_per_pixel*(x/16*2));
     u16 mask = 0x8000 >> (x & 15);
     int i = fb_var.bits_per_pixel;
     while (1) {