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vc4: Fix SRC_ALPHA_SATURATE blending.

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Fixes glean blendFunc.
This commit is contained in:
Eric Anholt 2014-10-21 15:46:48 +01:00
parent cc298023c9
commit ef280c95f2
1 changed files with 11 additions and 3 deletions
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14
src/gallium/drivers/vc4/vc4_program.c
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@ -1308,9 +1308,17 @@ vc4_blend_channel(struct vc4_compile *c,
case PIPE_BLENDFACTOR_DST_COLOR:
return qir_FMUL(c, val, dst[channel]);
case PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE:
return qir_FMIN(c, src[3], qir_FSUB(c,
qir_uniform_f(c, 1.0),
dst[3]));
if (channel != 3) {
return qir_FMUL(c,
val,
qir_FMIN(c,
src[3],
qir_FSUB(c,
qir_uniform_f(c, 1.0),
dst[3])));
} else {
return val;
}
case PIPE_BLENDFACTOR_CONST_COLOR:
return qir_FMUL(c, val,
get_temp_for_uniform(c,