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r300: add shared HyperZ pipe-count helper

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Introduce r300_hyperz_pipe_count and use it in\nr300_setup_hyperz_properties.\n\nRV530 selects pipe topology from NUM_Z_PIPES, while other families use\nNUM_GB_PIPES. Keeping this in one helper avoids duplicated family checks\nand prepares follow-up HiZ clear sizing changes to reuse the same rule.

(cherry picked from commit e97ac38ff3)

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40752>
This commit is contained in:
Pavel Ondračka 2026-02-23 14:12:16 +01:00 • committed by Eric Engestrom
parent 8292cf5563
commit 2b87cb01b2
3 changed files with 10 additions and 6 deletions
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2
.pick_status.json
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@ -664,7 +664,7 @@
"description": "r300: add shared HyperZ pipe-count helper",
"nominated": false,
"nomination_type": 0,
"resolution": 4,
"resolution": 1,
"main_sha": null,
"because_sha": null,
"notes": null

8
src/gallium/drivers/r300/r300_screen.h
View file

@ -53,6 +53,14 @@ radeon_winsys(struct pipe_screen *screen) {
return r300_screen(screen)->rws;
}
static inline unsigned
r300_hyperz_pipe_count(const struct r300_screen *screen)
{
if (screen->caps.family == CHIP_RV530)
return screen->info.r300_num_z_pipes;
return screen->info.r300_num_gb_pipes;
}
/* Debug functionality. */
/**

6
src/gallium/drivers/r300/r300_texture_desc.c
View file

@ -366,11 +366,7 @@ static void r300_setup_hyperz_properties(struct r300_screen *screen,
tex->tex.microtile) {
unsigned i, pipes;
if (screen->caps.family == CHIP_RV530) {
pipes = screen->info.r300_num_z_pipes;
} else {
pipes = screen->info.r300_num_gb_pipes;
}
pipes = r300_hyperz_pipe_count(screen);
for (i = 0; i <= tex->b.last_level; i++) {
unsigned zcomp_numdw, zcompsize, hiz_numdw, stride, height;