diff options
| author | Brian <[email protected]> | 2007-05-02 08:48:20 -0600 |
|---|---|---|
| committer | Brian <[email protected]> | 2007-05-02 08:48:20 -0600 |
| commit | 99f24c8d17f3a39ff0ebbeb1f7fa80142d8be648 (patch) | |
| tree | c84c4139295f13c8c92ea822c6221983aefbd23e /src/mesa/swrast | |
| parent | 04c401c91ea288e8a4d2c501b6e24c3ecbc83664 (diff) | |
fix some StepX/StepY mix-ups in alpha interpolation
Diffstat (limited to 'src/mesa/swrast')
| -rw-r--r-- | src/mesa/swrast/s_tritemp.h | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/src/mesa/swrast/s_tritemp.h b/src/mesa/swrast/s_tritemp.h index b8601bd5b4b..dcc3e958cb1 100644 --- a/src/mesa/swrast/s_tritemp.h +++ b/src/mesa/swrast/s_tritemp.h @@ -1,6 +1,6 @@ /* * Mesa 3-D graphics library - * Version: 6.5.3 + * Version: 7.0 * * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. * @@ -499,7 +499,7 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, # endif /* GL_FLOAT */ # ifdef INTERP_ALPHA span.attrStepX[FRAG_ATTRIB_COL0][3] = oneOverArea * (eMaj_da * eBot.dy - eMaj.dy * eBot_da); - span.attrStepX[FRAG_ATTRIB_COL0][3] = oneOverArea * (eMaj.dx * eBot_da - eMaj_da * eBot.dx); + span.attrStepY[FRAG_ATTRIB_COL0][3] = oneOverArea * (eMaj.dx * eBot_da - eMaj_da * eBot.dx); # if CHAN_TYPE == GL_FLOAT span.alphaStep = span.attrStepX[FRAG_ATTRIB_COL0][3]; # else @@ -523,7 +523,7 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, span.blueStep = 0; # endif /* GL_FLOAT */ # ifdef INTERP_ALPHA - span.attrStepX[FRAG_ATTRIB_COL0][3] = span.attrStepX[FRAG_ATTRIB_COL0][3] = 0.0F; + span.attrStepX[FRAG_ATTRIB_COL0][3] = span.attrStepY[FRAG_ATTRIB_COL0][3] = 0.0F; # if CHAN_TYPE == GL_FLOAT span.alphaStep = 0.0F; # else @@ -893,11 +893,11 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, # endif # ifdef INTERP_ALPHA # if CHAN_TYPE == GL_FLOAT - aLeft = vLower->color[ACOMP] + (span.attrStepX[FRAG_ATTRIB_COL0][3] * adjx + span.attrStepX[FRAG_ATTRIB_COL0][3] * adjy) * (1.0F / FIXED_SCALE); - fdaOuter = span.attrStepX[FRAG_ATTRIB_COL0][3] + dxOuter * span.attrStepX[FRAG_ATTRIB_COL0][3]; + aLeft = vLower->color[ACOMP] + (span.attrStepX[FRAG_ATTRIB_COL0][3] * adjx + span.attrStepY[FRAG_ATTRIB_COL0][3] * adjy) * (1.0F / FIXED_SCALE); + fdaOuter = span.attrStepY[FRAG_ATTRIB_COL0][3] + dxOuter * span.attrStepX[FRAG_ATTRIB_COL0][3]; # else aLeft = (GLint)(ChanToFixed(vLower->color[ACOMP]) + span.attrStepX[FRAG_ATTRIB_COL0][3] * adjx + span.attrStepX[FRAG_ATTRIB_COL0][3] * adjy) + FIXED_HALF; - fdaOuter = SignedFloatToFixed(span.attrStepX[FRAG_ATTRIB_COL0][3] + dxOuter * span.attrStepX[FRAG_ATTRIB_COL0][3]); + fdaOuter = SignedFloatToFixed(span.attrStepY[FRAG_ATTRIB_COL0][3] + dxOuter * span.attrStepX[FRAG_ATTRIB_COL0][3]); # endif # endif } |