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util/blend: Add helpers for normalizing inverts

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To avoid duplicating piles of cases.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Italo Nicola <italonicola@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24076>
This commit is contained in:
Alyssa Rosenzweig 2023-07-11 07:50:35 -04:00 • committed by Marge Bot
parent 5764071f95
commit 521d596d27
1 changed files with 22 additions and 2 deletions
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24
src/util/blend.h
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@ -7,6 +7,10 @@
#ifndef UTIL_BLEND_H
#define UTIL_BLEND_H
#include <stdbool.h>
#define PIPE_BLENDFACTOR_INVERT_BIT (0x10)
enum pipe_blendfactor {
PIPE_BLENDFACTOR_ONE = 1,
PIPE_BLENDFACTOR_SRC_COLOR,
@ -19,18 +23,34 @@ enum pipe_blendfactor {
PIPE_BLENDFACTOR_SRC1_COLOR,
PIPE_BLENDFACTOR_SRC1_ALPHA,
PIPE_BLENDFACTOR_ZERO = 0x11,
PIPE_BLENDFACTOR_ZERO = PIPE_BLENDFACTOR_INVERT_BIT | PIPE_BLENDFACTOR_ONE,
PIPE_BLENDFACTOR_INV_SRC_COLOR,
PIPE_BLENDFACTOR_INV_SRC_ALPHA,
PIPE_BLENDFACTOR_INV_DST_ALPHA,
PIPE_BLENDFACTOR_INV_DST_COLOR,
PIPE_BLENDFACTOR_INV_CONST_COLOR = 0x17,
/* Intentionally weird wrapping due to Gallium trace parsing this file */
PIPE_BLENDFACTOR_INV_CONST_COLOR = PIPE_BLENDFACTOR_INVERT_BIT
| PIPE_BLENDFACTOR_CONST_COLOR,
PIPE_BLENDFACTOR_INV_CONST_ALPHA,
PIPE_BLENDFACTOR_INV_SRC1_COLOR,
PIPE_BLENDFACTOR_INV_SRC1_ALPHA,
};
static inline bool
util_blendfactor_is_inverted(enum pipe_blendfactor factor)
{
/* By construction of the enum */
return (factor & PIPE_BLENDFACTOR_INVERT_BIT);
}
static inline enum pipe_blendfactor
util_blendfactor_without_invert(enum pipe_blendfactor factor)
{
/* By construction of the enum */
return (enum pipe_blendfactor)(factor & ~PIPE_BLENDFACTOR_INVERT_BIT);
}
enum pipe_blend_func {
PIPE_BLEND_ADD,
PIPE_BLEND_SUBTRACT,