freedreno/a6xx: Don't early-z if there are stencil writes

Fixes a similar stencil related misrendering in a couple "RV AppStudios"
titles.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8598>

src/gallium/drivers/freedreno/a6xx/fd6_emit.c

@@ -593,7 +593,7 @@ compute_ztest_mode(struct fd6_emit *emit, bool lrz_valid)
 			fs->writes_stencilref) {
 		return A6XX_LATE_Z;
 	} else if ((fs->has_kill || zsa->alpha_test) &&
-			(zsa->base.depth_writemask || !pfb->zsbuf)) {
+			(zsa->writes_zs || !pfb->zsbuf)) {
 		/* Slightly odd, but seems like the hw wants us to select
 		 * LATE_Z mode if there is no depth buffer + discard.  Either
 		 * that, or when occlusion query is enabled.  See:

src/gallium/drivers/freedreno/a6xx/fd6_zsa.c

@@ -102,6 +102,8 @@ fd6_zsa_state_create(struct pipe_context *pctx,
 
 	so->base = *cso;
 
+	so->writes_zs = util_writes_depth_stencil(cso);
+
 	so->rb_depth_cntl |=
 		A6XX_RB_DEPTH_CNTL_ZFUNC(cso->depth_func); /* maps 1:1 */
 

src/gallium/drivers/freedreno/a6xx/fd6_zsa.h

@@ -49,6 +49,7 @@ struct fd6_zsa_stateobj {
 	uint32_t rb_stencilwrmask;
 
 	struct fd6_lrz_state lrz;
+	bool writes_zs;     /* writes depth and/or stencil */
 	bool invalidate_lrz;
 	bool alpha_test;