diff options
| author | Brian Paul <brian.paul@tungstengraphics.com> | 2005-11-12 18:44:29 +0000 |
|---|---|---|
| committer | Brian Paul <brian.paul@tungstengraphics.com> | 2005-11-12 18:44:29 +0000 |
| commit | ba3da6154c324cc916845bc5de3de077d0b59ffc (patch) | |
| tree | 45554c510334b1cff6133c5698487fe1a437a05f /src/mesa/swrast/s_span.c | |
| parent | e3636b4114327411a3ff7590a61a652d10c18a34 (diff) | |
Added OSMesaColorClamp(), bug 4917
Diffstat (limited to 'src/mesa/swrast/s_span.c')
| -rw-r--r-- | src/mesa/swrast/s_span.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/mesa/swrast/s_span.c b/src/mesa/swrast/s_span.c index fbff31b90e..1cf743ae48 100644 --- a/src/mesa/swrast/s_span.c +++ b/src/mesa/swrast/s_span.c @@ -1276,6 +1276,20 @@ _swrast_write_rgba_span( GLcontext *ctx, struct sw_span *span) } } + /* Clamp color/alpha values over the range [0.0, 1.0] before storage */ +#if CHAN_TYPE == GL_FLOAT + if (ctx->Color.ClampFragmentColor) { + GLchan (*rgba)[4] = span->array->rgba; + GLuint i; + for (i = 0; i < span->end; i++) { + rgba[i][RCOMP] = CLAMP(rgba[i][RCOMP], 0.0, CHAN_MAXF); + rgba[i][GCOMP] = CLAMP(rgba[i][GCOMP], 0.0, CHAN_MAXF); + rgba[i][BCOMP] = CLAMP(rgba[i][BCOMP], 0.0, CHAN_MAXF); + rgba[i][ACOMP] = CLAMP(rgba[i][ACOMP], 0.0, CHAN_MAXF); + } + } +#endif + if (swrast->_RasterMask & MULTI_DRAW_BIT) { /* need to do blend/logicop separately for each color buffer */ multi_write_rgba_span(ctx, span); |