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panfrost: Fix is_opaque when blend_enable=false

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Needed to pass the "replace" unit test.

Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12152>
This commit is contained in:
Alyssa Rosenzweig
2021-07-30 18:04:05 -04:00
committed by Marge Bot
parent b7af56f2ad
commit 01a1b253b4
1 changed files with 11 additions and 2 deletions
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13
src/panfrost/lib/pan_blend.c
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@@ -237,6 +237,16 @@ to_panfrost_function(enum blend_func blend_func,
bool
pan_blend_is_opaque(const struct pan_blend_equation equation)
{
/* If a channel is masked out, we can't use opaque mode even if
* blending is disabled, since we need a tilebuffer read in there */
if (equation.color_mask != 0xF)
return false;
/* With nothing masked out, disabled bledning is opaque */
if (!equation.blend_enable)
return true;
/* Also detect open-coded opaque blending */
return equation.rgb_src_factor == BLEND_FACTOR_ZERO &&
equation.rgb_invert_src_factor &&
equation.rgb_dst_factor == BLEND_FACTOR_ZERO &&
@@ -248,8 +258,7 @@ pan_blend_is_opaque(const struct pan_blend_equation equation)
equation.alpha_dst_factor == BLEND_FACTOR_ZERO &&
!equation.alpha_invert_dst_factor &&
(equation.alpha_func == BLEND_FUNC_ADD ||
equation.alpha_func == BLEND_FUNC_SUBTRACT) &&
equation.color_mask == 0xf;
equation.alpha_func == BLEND_FUNC_SUBTRACT);
}
static bool