From: Rob Clark <robclark@freedesktop.org>
Date: Sat, 20 Dec 2014 17:01:02 +0000 (-0500)
Subject: freedreno/a4xx: alpha-test
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=10d81a03b393d524deb7f0f436e609ca5691c9f2;p=mesa.git

freedreno/a4xx: alpha-test

Signed-off-by: Rob Clark <robclark@freedesktop.org>
---

diff --git a/src/gallium/drivers/freedreno/a4xx/fd4_zsa.c b/src/gallium/drivers/freedreno/a4xx/fd4_zsa.c
index da0c2b748fe..e14b617570d 100644
--- a/src/gallium/drivers/freedreno/a4xx/fd4_zsa.c
+++ b/src/gallium/drivers/freedreno/a4xx/fd4_zsa.c
@@ -92,10 +92,12 @@ fd4_zsa_state_create(struct pipe_context *pctx,
 	}
 
 	if (cso->alpha.enabled) {
+		uint32_t ref = cso->alpha.ref_value * 255.0;
 		so->gras_alpha_control =
 			A4XX_GRAS_ALPHA_CONTROL_ALPHA_TEST_ENABLE;
 		so->rb_alpha_control =
 			A4XX_RB_ALPHA_CONTROL_ALPHA_TEST |
+			A4XX_RB_ALPHA_CONTROL_ALPHA_REF(ref) |
 			A4XX_RB_ALPHA_CONTROL_ALPHA_TEST_FUNC(cso->alpha.func);
 		so->rb_depth_control |=
 			A4XX_RB_DEPTH_CONTROL_EARLY_Z_DISABLE;