Mesa (master): r600g: Fix the DB_SHADER_CONTROL mask in create_ds_state().

[Henri Verbeet]

Module: Mesa
Branch: master
Commit: ab1a2e454eaeb798b7c4b782877f58266ebab3a1
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=ab1a2e454eaeb798b7c4b782877f58266ebab3a1

Author: Henri Verbeet <hverbeet at gmail.com>
Date:   Mon Mar 14 22:07:44 2011 +0100

r600g: Fix the DB_SHADER_CONTROL mask in create_ds_state().

Signed-off-by: Henri Verbeet <hverbeet at gmail.com>

---

 src/gallium/drivers/r600/evergreen_state.c |    9 ++++-----
 src/gallium/drivers/r600/r600_state.c      |    9 ++++-----
 2 files changed, 8 insertions(+), 10 deletions(-)

diff --git a/src/gallium/drivers/r600/evergreen_state.c b/src/gallium/drivers/r600/evergreen_state.c
index e770b17..fedca3b 100644
--- a/src/gallium/drivers/r600/evergreen_state.c
+++ b/src/gallium/drivers/r600/evergreen_state.c
@@ -150,10 +150,6 @@ static void *evergreen_create_dsa_state(struct pipe_context *ctx,
 
 	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 is 0xFFFFFFBE as Z_EXPORT_ENABLE (bit 0) will be
-	 * set by fragment shader if it export Z and KILL_ENABLE (bit 6) will
-	 * be set if shader use texkill instruction
-	 */
 	db_shader_control = S_02880C_Z_ORDER(V_02880C_EARLY_Z_THEN_LATE_Z);
 	stencil_ref_mask = 0;
 	stencil_ref_mask_bf = 0;
@@ -210,7 +206,10 @@ static void *evergreen_create_dsa_state(struct pipe_context *ctx,
 	r600_pipe_state_add_reg(rstate, R_028438_SX_ALPHA_REF, alpha_ref, 0xFFFFFFFF, NULL);
 	r600_pipe_state_add_reg(rstate, R_0286DC_SPI_FOG_CNTL, 0x00000000, 0xFFFFFFFF, NULL);
 	r600_pipe_state_add_reg(rstate, R_028800_DB_DEPTH_CONTROL, db_depth_control, 0xFFFFFFFF, NULL);
-	r600_pipe_state_add_reg(rstate, R_02880C_DB_SHADER_CONTROL, db_shader_control, 0xFFFFFFBE, NULL);
+	/* The DB_SHADER_CONTROL mask is 0xFFFFFFBC since Z_EXPORT_ENABLE,
+	 * STENCIL_EXPORT_ENABLE and KILL_ENABLE are controlled by
+	 * evergreen_pipe_shader_ps().*/
+	r600_pipe_state_add_reg(rstate, R_02880C_DB_SHADER_CONTROL, db_shader_control, 0xFFFFFFBC, NULL);
 	r600_pipe_state_add_reg(rstate, R_028000_DB_RENDER_CONTROL, db_render_control, 0xFFFFFFFF, NULL);
 	r600_pipe_state_add_reg(rstate, R_02800C_DB_RENDER_OVERRIDE, db_render_override, 0xFFFFFFFF, NULL);
 	r600_pipe_state_add_reg(rstate, R_028AC0_DB_SRESULTS_COMPARE_STATE0, 0x0, 0xFFFFFFFF, NULL);
diff --git a/src/gallium/drivers/r600/r600_state.c b/src/gallium/drivers/r600/r600_state.c
index f1e21bc..2afa374 100644
--- a/src/gallium/drivers/r600/r600_state.c
+++ b/src/gallium/drivers/r600/r600_state.c
@@ -200,10 +200,6 @@ static void *r600_create_dsa_state(struct pipe_context *ctx,
 
 	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 is 0xFFFFFFBE as Z_EXPORT_ENABLE (bit 0) will be
-	 * set by fragment shader if it export Z and KILL_ENABLE (bit 6) will
-	 * be set if shader use texkill instruction
-	 */
 	db_shader_control = S_02880C_Z_ORDER(V_02880C_EARLY_Z_THEN_LATE_Z);
 	stencil_ref_mask = 0;
 	stencil_ref_mask_bf = 0;
@@ -262,7 +258,10 @@ static void *r600_create_dsa_state(struct pipe_context *ctx,
 	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);
 	r600_pipe_state_add_reg(rstate, R_028800_DB_DEPTH_CONTROL, db_depth_control, 0xFFFFFFFF, NULL);
-	r600_pipe_state_add_reg(rstate, R_02880C_DB_SHADER_CONTROL, db_shader_control, 0xFFFFFFBE, NULL);
+	/* The DB_SHADER_CONTROL mask is 0xFFFFFFBC since Z_EXPORT_ENABLE,
+	 * STENCIL_EXPORT_ENABLE and KILL_ENABLE are controlled by
+	 * r600_pipe_shader_ps().*/
+	r600_pipe_state_add_reg(rstate, R_02880C_DB_SHADER_CONTROL, db_shader_control, 0xFFFFFFBC, NULL);
 	r600_pipe_state_add_reg(rstate, R_028D0C_DB_RENDER_CONTROL, db_render_control, 0xFFFFFFFF, NULL);
 	r600_pipe_state_add_reg(rstate, R_028D10_DB_RENDER_OVERRIDE, db_render_override, 0xFFFFFFFF, NULL);
 	r600_pipe_state_add_reg(rstate, R_028D2C_DB_SRESULTS_COMPARE_STATE1, 0x00000000, 0xFFFFFFFF, NULL);