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panfrost: Fix discard behaviour on Bifrost

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Set zs_update_operation to FORCE_LATE, as we don't want to update
depth if the fragment is discarded.

Set pixel_kill_operation to WEAK_EARLY to match the blob.

Reviewed-and-tested-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8235>
This commit is contained in:
Icecream95
2020-12-23 23:30:24 +13:00
committed by Marge Bot
parent 5a1518e86b
commit 9ef23e428b
1 changed files with 3 additions and 0 deletions
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src/gallium/drivers/panfrost/pan_assemble.c
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@@ -82,6 +82,9 @@ pan_prepare_bifrost_props(struct panfrost_shader_state *state,
if (state->writes_depth || state->writes_stencil) {
state->properties.bifrost.zs_update_operation = MALI_PIXEL_KILL_FORCE_LATE;
state->properties.bifrost.pixel_kill_operation = MALI_PIXEL_KILL_FORCE_LATE;
} else if (state->can_discard) {
state->properties.bifrost.zs_update_operation = MALI_PIXEL_KILL_FORCE_LATE;
state->properties.bifrost.pixel_kill_operation = MALI_PIXEL_KILL_WEAK_EARLY;
} else {
state->properties.bifrost.zs_update_operation = MALI_PIXEL_KILL_STRONG_EARLY;
state->properties.bifrost.pixel_kill_operation = MALI_PIXEL_KILL_FORCE_EARLY;