Commen=
t # 3
on bug 10173=
9
from Roland Scheidegger
(In reply to Jan from =
comment #2)
> I also have this problem. Is there a way to forc=
e/override Z_ORDER to
> LATE_Z, at best per application, so that I can try whether this has any
> effect?
> If not: what other way is there to test it? I am willing to e.g. patch,
> compile and test some code if somebody tells me what to do, no promise=
when
> I'll find the time for that though.
You can't override that, you'd need a mesa patch looking something like thi=
s:
diff --git a/src/gallium/drivers/radeonsi/si_state.c
b/src/gallium/drivers/radeonsi/si_state.c
index fcf4928e65..13e44dac16 100644
--- a/src/gallium/drivers/radeonsi/si_state.c
+++ b/src/gallium/drivers/radeonsi/si_state.c
@@ -1417,6 +1417,11 @@ static void si_emit_db_render_state(=
struct si_context
*sctx, struct r600_atom *s
db_shader_control |=3D S_02880C_Z_ORDER(V_02880C_LATE_Z);
}
+ if (sctx->queued.named.blend->alpha_to_coverage) {
+ db_shader_control &=3D C_02880C_Z_ORDER;
+ db_shader_control |=3D S_02880C_Z_ORDER(V_02880C_LATE_Z);
+ }
+
Albeit probably would need to add a blend dependency like this too:
@@ -658,6 +658,10 @@ static void si_bind_blend_state(struct=
pipe_context *ctx,
void *state)
old_blend->dual_src_blend !=3D blend->dual_src_blend)
si_mark_atom_dirty(sctx, &sctx->cb_render_state);
+ if (!old_blend ||
+ old_blend->alpha_to_coverage !=3D blend->alpha_to_covera=
ge)
+ si_mark_atom_dirty(sctx, &sctx->db_render_state);
+
si_pm4_bind_state(sctx, blend, state);
if (!old_blend ||
But as said, I really don't have much knowledge of the driver.