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asahi,hk: optimize no-op FS

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Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36399>
This commit is contained in:
Alyssa Rosenzweig 2025-07-30 14:37:02 -04:00
parent 626fa80c1b
commit 74ed2b78e8
4 changed files with 8 additions and 1 deletions
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1
src/asahi/lib/agx_linker.c
View file

@ -209,6 +209,7 @@ agx_fast_link(struct agx_linked_shader *linked, struct agx_device *dev,
if (tag_write_disable) {
reads_tib = false;
writes_sample_mask = false;
linked->no_op = true;
}
agx_pack(&linked->fragment_control, FRAGMENT_CONTROL, cfg) {

3
src/asahi/lib/agx_linker.h
View file

@ -26,6 +26,9 @@ struct agx_linked_shader {
*/
bool uses_txf;
/* Whether the program is a no-op and can be skipped. */
bool no_op;
/* Coefficient register bindings */
struct agx_varyings_fs cf;

2
src/asahi/vulkan/hk_cmd_draw.c
View file

@ -2374,6 +2374,8 @@ hk_flush_ppp_state(struct hk_cmd_buffer *cmd, struct hk_cs *cs, uint8_t **out)
.viewport_count = 1, /* irrelevant */
};
dirty.fragment_shader &= !linked_fs->b.no_op;
/* Calculate the update size. If it equals the header, there is nothing to
* update so early-exit.
*/

3
src/gallium/drivers/asahi/agx_state.c
View file

@ -3561,7 +3561,8 @@ agx_encode_state(struct agx_batch *batch, uint8_t *out)
.cull = IS_DIRTY(RS),
.cull_2 = varyings_dirty,
.fragment_shader =
IS_DIRTY(FS) || varyings_dirty || IS_DIRTY(SAMPLE_MASK),
(IS_DIRTY(FS) || varyings_dirty || IS_DIRTY(SAMPLE_MASK)) &&
!ctx->linked.fs->no_op,
.occlusion_query = IS_DIRTY(QUERY),
.output_size = IS_DIRTY(VS_PROG),
.viewport_count = 1, /* irrelevant */