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vc4: Clamp the inputs to the blend equation to [0, 1].

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Fixes the remaining ARB_color_buffer_float rendering tests.
This commit is contained in:
Eric Anholt
2015-01-11 15:30:39 +13:00
parent 1519a1928a
commit ff1948a1be
1 changed files with 10 additions and 1 deletions
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src/gallium/drivers/vc4/vc4_program.c
+10 -1
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@@ -1596,6 +1596,15 @@ vc4_blend(struct vc4_compile *c, struct qreg *result,
return;
}
struct qreg clamped_src[4];
struct qreg clamped_dst[4];
for (int i = 0; i < 4; i++) {
clamped_src[i] = qir_SAT(c, src_color[i]);
clamped_dst[i] = qir_SAT(c, dst_color[i]);
}
src_color = clamped_src;
dst_color = clamped_dst;
struct qreg src_blend[4], dst_blend[4];
for (int i = 0; i < 3; i++) {
src_blend[i] = vc4_blend_channel(c,
@@ -2793,7 +2802,7 @@ vc4_write_uniforms(struct vc4_context *vc4, struct vc4_compiled_shader *shader,
case QUNIFORM_BLEND_CONST_COLOR:
cl_aligned_f(&vc4->uniforms,
vc4->blend_color.color[uinfo->data[i]]);
CLAMP(vc4->blend_color.color[uinfo->data[i]], 0, 1));
break;
case QUNIFORM_STENCIL: