diff options
| author | Brian Paul <brian.paul@tungstengraphics.com> | 2006-11-01 00:13:16 +0000 |
|---|---|---|
| committer | Brian Paul <brian.paul@tungstengraphics.com> | 2006-11-01 00:13:16 +0000 |
| commit | e6f47d1855354165c6eed5080d8a72024891f10f (patch) | |
| tree | d123b91baf8aae2c7e04cb1ddece51479fd97618 | |
| parent | 90fcf6ccc345c287309d7d17b2ff256cc22fb2b7 (diff) | |
fix some bugs in interpolate_specular()
| -rw-r--r-- | src/mesa/swrast/s_span.c | 52 |
1 files changed, 29 insertions, 23 deletions
diff --git a/src/mesa/swrast/s_span.c b/src/mesa/swrast/s_span.c index 2e20f7a296..c74b98facf 100644 --- a/src/mesa/swrast/s_span.c +++ b/src/mesa/swrast/s_span.c @@ -353,32 +353,38 @@ interpolate_specular(SWspan *span) case GL_FLOAT: { GLfloat (*spec)[4] = span->array->color.sz4.spec; +#if CHAN_BITS <= 16 + GLfloat r = CHAN_TO_FLOAT(FixedToChan(span->specRed)); + GLfloat g = CHAN_TO_FLOAT(FixedToChan(span->specGreen)); + GLfloat b = CHAN_TO_FLOAT(FixedToChan(span->specBlue)); +#else + GLfloat r = span->specRed; + GLfloat g = span->specGreen; + GLfloat b = span->specBlue; +#endif + GLfloat dr, dg, db; if (span->interpMask & SPAN_FLAT) { - GLfloat color[4]; - color[RCOMP] = span->specRed; - color[GCOMP] = span->specGreen; - color[BCOMP] = span->specBlue; - color[ACOMP] = 0.0F; - for (i = 0; i < n; i++) { - COPY_4V(spec[i], color); - } + dr = dg = db = 0.0; } else { - GLfloat r = span->specRed; - GLfloat g = span->specGreen; - GLfloat b = span->specBlue; - GLfloat dr = span->specRedStep; - GLfloat dg = span->specGreenStep; - GLfloat db = span->specBlueStep; - for (i = 0; i < n; i++) { - spec[i][RCOMP] = r; - spec[i][GCOMP] = g; - spec[i][BCOMP] = b; - spec[i][ACOMP] = 0.0F; - r += dr; - g += dg; - b += db; - } +#if CHAN_BITS <= 16 + dr = CHAN_TO_FLOAT(FixedToChan(span->specRedStep)); + dg = CHAN_TO_FLOAT(FixedToChan(span->specGreenStep)); + db = CHAN_TO_FLOAT(FixedToChan(span->specBlueStep)); +#else + dr = span->specRedStep; + dg = span->specGreenStep; + db = span->specBlueStep; +#endif + } + for (i = 0; i < n; i++) { + spec[i][RCOMP] = r; + spec[i][GCOMP] = g; + spec[i][BCOMP] = b; + spec[i][ACOMP] = 0.0F; + r += dr; + g += dg; + b += db; } } break; |