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r300: disable zmask clears for large surfaces

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Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40040>
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Pavel Ondračka 2026-02-23 13:07:56 +01:00 • committed by Marge Bot
parent 648dfe88f4
commit 3fc2627897
1 changed files with 14 additions and 1 deletions
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15
src/gallium/drivers/r300/r300_blit.c
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@ -134,8 +134,21 @@ static bool r300_fast_zclear_allowed(struct r300_context *r300,
{
struct pipe_framebuffer_state *fb =
(struct pipe_framebuffer_state*)r300->fb_state.state;
struct r300_resource *tex = r300_resource(fb->zsbuf.texture);
unsigned zmask_dwords = tex->tex.zmask_dwords[fb->zsbuf.level];
return r300_resource(fb->zsbuf.texture)->tex.zmask_dwords[fb->zsbuf.level] != 0;
if (!zmask_dwords)
return false;
/* On tested RV530, 3D_CLEAR_ZMASK does not work above 0x1400. Avoid fast Z
* clear in that range and fall back to normal depth clear.
*
* FIXME: Validate whether pre-R5xx families need a similar guard and/or
* a different threshold. */
if (r300->screen->caps.is_r500 && zmask_dwords > 0x1400)
return false;
return true;
}
static bool r300_hiz_clear_allowed(struct r300_context *r300)