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Add Rich's improved tie breaking change.

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This commit is contained in:
Ignacio 2020-03-30 10:04:35 -07:00
parent 9a16bebf8f
commit e5740ccb32
1 changed files with 4 additions and 4 deletions
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8
extern/stb/stb_dxt.h vendored
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@ -239,14 +239,14 @@ static unsigned int stb__MatchColorsBlock(unsigned char *block, unsigned char *c
// but it's very close and a lot faster.
// http://cbloomrants.blogspot.com/2008/12/12-08-08-dxtc-summary.html
c0Point = (stops[1] + stops[3]) >> 1;
halfPoint = (stops[3] + stops[2]) >> 1;
c3Point = (stops[2] + stops[0]) >> 1;
c0Point = (stops[1] + stops[3]);
halfPoint = (stops[3] + stops[2]);
c3Point = (stops[2] + stops[0]);
if(!dither) {
// the version without dithering is straightforward
for (i=15;i>=0;i--) {
int dot = dots[i];
int dot = 2 * dots[i];
mask <<= 2;
if(dot < halfPoint)