diff options
| -rw-r--r-- | NEWS | 2 | ||||
| -rw-r--r-- | src/i_video.c | 11 |
2 files changed, 9 insertions, 4 deletions
@@ -3,6 +3,8 @@ * Updated COPYING to current version of GPL2 (thanks Rahul Sundaram). * Fix bug with detection of IWAD type by filename (thanks mether). + * Reduce palette accuracy to 6 bits per channel, to more accurately + emulate the PC VGA hardware (thanks GhostlyDeath). 1.6.0 (2011-05-17): diff --git a/src/i_video.c b/src/i_video.c index 15e4a6b7..d671a228 100644 --- a/src/i_video.c +++ b/src/i_video.c @@ -956,11 +956,14 @@ void I_SetPalette (byte *doompalette) { int i; - for (i=0; i<256; ++i) + for (i=0; i<256; ++i) { - palette[i].r = gammatable[usegamma][*doompalette++]; - palette[i].g = gammatable[usegamma][*doompalette++]; - palette[i].b = gammatable[usegamma][*doompalette++]; + // Zero out the bottom two bits of each channel - the PC VGA + // controller only supports 6 bits of accuracy. + + palette[i].r = gammatable[usegamma][*doompalette++] & ~3; + palette[i].g = gammatable[usegamma][*doompalette++] & ~3; + palette[i].b = gammatable[usegamma][*doompalette++] & ~3; } palette_to_set = true; |