r600g: Match alpha ref precision to color format precision.

This fixes piglit fbo-alphatest-formats on Evergreen.

Signed-off-by: Henri Verbeet <[email protected]>

1 files changed, 7 insertions, 4 deletions

diff --git a/src/gallium/drivers/r600/r600_state.c b/src/gallium/drivers/r600/r600_state.c
index 1c27f880751..90c5ba2b31e 100644
--- a/src/gallium/drivers/r600/r600_state.c
+++ b/src/gallium/drivers/r600/r600_state.c
@@ -199,14 +199,17 @@ static void *r600_create_blend_state(struct pipe_context *ctx,
 static void *r600_create_dsa_state(struct pipe_context *ctx,
 				   const struct pipe_depth_stencil_alpha_state *state)
 {
-	struct r600_pipe_state *rstate = CALLOC_STRUCT(r600_pipe_state);
+	struct r600_pipe_dsa *dsa = CALLOC_STRUCT(r600_pipe_dsa);
 	unsigned db_depth_control, alpha_test_control, alpha_ref, db_shader_control;
 	unsigned stencil_ref_mask, stencil_ref_mask_bf, db_render_override, db_render_control;
+	struct r600_pipe_state *rstate;
 
-	if (rstate == NULL) {
+	if (dsa == NULL) {
 		return NULL;
 	}
 
+	rstate = &dsa->rstate;
+
 	rstate->id = R600_PIPE_STATE_DSA;
 	/* depth TODO some of those db_shader_control field depend on shader adjust mask & add it to shader */
 	db_shader_control = S_02880C_Z_ORDER(V_02880C_EARLY_Z_THEN_LATE_Z);
@@ -246,6 +249,7 @@ static void *r600_create_dsa_state(struct pipe_context *ctx,
 		alpha_test_control |= S_028410_ALPHA_TEST_ENABLE(1);
 		alpha_ref = fui(state->alpha.ref_value);
 	}
+	dsa->alpha_ref = alpha_ref;
 
 	/* misc */
 	db_render_control = 0;
@@ -262,7 +266,6 @@ static void *r600_create_dsa_state(struct pipe_context *ctx,
 	r600_pipe_state_add_reg(rstate,
 				R_028434_DB_STENCILREFMASK_BF, stencil_ref_mask_bf,
 				0xFFFFFFFF & C_028434_STENCILREF_BF, NULL);
-	r600_pipe_state_add_reg(rstate, R_028438_SX_ALPHA_REF, alpha_ref, 0xFFFFFFFF, NULL);
 	r600_pipe_state_add_reg(rstate, R_0286E0_SPI_FOG_FUNC_SCALE, 0x00000000, 0xFFFFFFFF, NULL);
 	r600_pipe_state_add_reg(rstate, R_0286E4_SPI_FOG_FUNC_BIAS, 0x00000000, 0xFFFFFFFF, NULL);
 	r600_pipe_state_add_reg(rstate, R_0286DC_SPI_FOG_CNTL, 0x00000000, 0xFFFFFFFF, NULL);
@@ -964,7 +967,7 @@ void r600_init_state_functions(struct r600_pipe_context *rctx)
 	rctx->context.create_vertex_elements_state = r600_create_vertex_elements;
 	rctx->context.create_vs_state = r600_create_shader_state;
 	rctx->context.bind_blend_state = r600_bind_blend_state;
-	rctx->context.bind_depth_stencil_alpha_state = r600_bind_state;
+	rctx->context.bind_depth_stencil_alpha_state = r600_bind_dsa_state;
 	rctx->context.bind_fragment_sampler_states = r600_bind_ps_sampler;
 	rctx->context.bind_fs_state = r600_bind_ps_shader;
 	rctx->context.bind_rasterizer_state = r600_bind_rs_state;