freedreno/a3xx: alpha-test

Needed by some games, like etuxracer and supertuxkart which use alpha
test rather than blending, to handle texture transparency.

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

diff --git a/src/gallium/drivers/freedreno/a2xx/a2xx.xml.h b/src/gallium/drivers/freedreno/a2xx/a2xx.xml.h
index 140d3f4..e99b753 100644 (file)
--- a/src/gallium/drivers/freedreno/a2xx/a2xx.xml.h
+++ b/src/gallium/drivers/freedreno/a2xx/a2xx.xml.h
@@ -13,7 +13,7 @@ The rules-ng-ng source files this header was generated from are:
 - /home/robclark/src/freedreno/envytools/rnndb/a2xx/a2xx.xml           (  30005 bytes, from 2013-07-19 21:30:48)
 - /home/robclark/src/freedreno/envytools/rnndb/adreno_common.xml       (   8983 bytes, from 2013-07-24 01:38:36)
 - /home/robclark/src/freedreno/envytools/rnndb/adreno_pm4.xml          (   9759 bytes, from 2013-09-06 12:50:15)
-- /home/robclark/src/freedreno/envytools/rnndb/a3xx/a3xx.xml           (  51536 bytes, from 2013-09-08 13:18:17)
+- /home/robclark/src/freedreno/envytools/rnndb/a3xx/a3xx.xml           (  51659 bytes, from 2013-09-08 18:21:13)
 
 Copyright (C) 2013 by the following authors:
 - Rob Clark <robdclark@gmail.com> (robclark)

diff --git a/src/gallium/drivers/freedreno/a3xx/a3xx.xml.h b/src/gallium/drivers/freedreno/a3xx/a3xx.xml.h
index 834361b..8eb7d6b 100644 (file)
--- a/src/gallium/drivers/freedreno/a3xx/a3xx.xml.h
+++ b/src/gallium/drivers/freedreno/a3xx/a3xx.xml.h
@@ -13,7 +13,7 @@ The rules-ng-ng source files this header was generated from are:
 - /home/robclark/src/freedreno/envytools/rnndb/a2xx/a2xx.xml           (  30005 bytes, from 2013-07-19 21:30:48)
 - /home/robclark/src/freedreno/envytools/rnndb/adreno_common.xml       (   8983 bytes, from 2013-07-24 01:38:36)
 - /home/robclark/src/freedreno/envytools/rnndb/adreno_pm4.xml          (   9759 bytes, from 2013-09-06 12:50:15)
-- /home/robclark/src/freedreno/envytools/rnndb/a3xx/a3xx.xml           (  51536 bytes, from 2013-09-08 13:18:17)
+- /home/robclark/src/freedreno/envytools/rnndb/a3xx/a3xx.xml           (  51659 bytes, from 2013-09-08 18:21:13)
 
 Copyright (C) 2013 by the following authors:
 - Rob Clark <robdclark@gmail.com> (robclark)
@@ -745,6 +745,7 @@ static inline uint32_t A3XX_RB_RENDER_CONTROL_BIN_WIDTH(uint32_t val)
 }
 #define A3XX_RB_RENDER_CONTROL_DISABLE_COLOR_PIPE              0x00001000
 #define A3XX_RB_RENDER_CONTROL_ENABLE_GMEM                     0x00002000
+#define A3XX_RB_RENDER_CONTROL_ALPHA_TEST                      0x00400000
 #define A3XX_RB_RENDER_CONTROL_ALPHA_TEST_FUNC__MASK           0x07000000
 #define A3XX_RB_RENDER_CONTROL_ALPHA_TEST_FUNC__SHIFT          24
 static inline uint32_t A3XX_RB_RENDER_CONTROL_ALPHA_TEST_FUNC(enum adreno_compare_func val)
@@ -767,7 +768,19 @@ static inline uint32_t A3XX_RB_MSAA_CONTROL_SAMPLE_MASK(uint32_t val)
        return ((val) << A3XX_RB_MSAA_CONTROL_SAMPLE_MASK__SHIFT) & A3XX_RB_MSAA_CONTROL_SAMPLE_MASK__MASK;
 }
 
-#define REG_A3XX_UNKNOWN_20C3                                  0x000020c3
+#define REG_A3XX_RB_ALPHA_REF                                  0x000020c3
+#define A3XX_RB_ALPHA_REF_UINT__MASK                           0x0000ff00
+#define A3XX_RB_ALPHA_REF_UINT__SHIFT                          8
+static inline uint32_t A3XX_RB_ALPHA_REF_UINT(uint32_t val)
+{
+       return ((val) << A3XX_RB_ALPHA_REF_UINT__SHIFT) & A3XX_RB_ALPHA_REF_UINT__MASK;
+}
+#define A3XX_RB_ALPHA_REF_FLOAT__MASK                          0xffff0000
+#define A3XX_RB_ALPHA_REF_FLOAT__SHIFT                         16
+static inline uint32_t A3XX_RB_ALPHA_REF_FLOAT(float val)
+{
+       return ((util_float_to_half(val)) << A3XX_RB_ALPHA_REF_FLOAT__SHIFT) & A3XX_RB_ALPHA_REF_FLOAT__MASK;
+}
 
 static inline uint32_t REG_A3XX_RB_MRT(uint32_t i0) { return 0x000020c4 + 0x4*i0; }
 
@@ -1002,7 +1015,7 @@ static inline uint32_t A3XX_RB_COPY_DEST_INFO_ENDIAN(enum adreno_rb_surface_endi
 #define REG_A3XX_RB_DEPTH_CONTROL                              0x00002100
 #define A3XX_RB_DEPTH_CONTROL_Z_ENABLE                         0x00000002
 #define A3XX_RB_DEPTH_CONTROL_Z_WRITE_ENABLE                   0x00000004
-#define A3XX_RB_DEPTH_CONTROL_EARLY_Z_ENABLE                   0x00000008
+#define A3XX_RB_DEPTH_CONTROL_EARLY_Z_DISABLE                  0x00000008
 #define A3XX_RB_DEPTH_CONTROL_ZFUNC__MASK                      0x00000070
 #define A3XX_RB_DEPTH_CONTROL_ZFUNC__SHIFT                     4
 static inline uint32_t A3XX_RB_DEPTH_CONTROL_ZFUNC(enum adreno_compare_func val)

diff --git a/src/gallium/drivers/freedreno/a3xx/fd3_emit.c b/src/gallium/drivers/freedreno/a3xx/fd3_emit.c
index d4e07af..4492cce 100644 (file)
--- a/src/gallium/drivers/freedreno/a3xx/fd3_emit.c
+++ b/src/gallium/drivers/freedreno/a3xx/fd3_emit.c
@@ -357,6 +357,9 @@ fd3_emit_state(struct fd_context *ctx, uint32_t dirty)
 
                fd3_emit_rbrc_draw_state(ring, zsa->rb_render_control);
 
+               OUT_PKT0(ring, REG_A3XX_RB_ALPHA_REF, 1);
+               OUT_RING(ring, zsa->rb_alpha_ref);
+
                OUT_PKT0(ring, REG_A3XX_RB_DEPTH_CONTROL, 1);
                OUT_RING(ring, zsa->rb_depth_control);
 

diff --git a/src/gallium/drivers/freedreno/a3xx/fd3_zsa.c b/src/gallium/drivers/freedreno/a3xx/fd3_zsa.c
index 7603465..15833ad 100644 (file)
--- a/src/gallium/drivers/freedreno/a3xx/fd3_zsa.c
+++ b/src/gallium/drivers/freedreno/a3xx/fd3_zsa.c
@@ -90,8 +90,13 @@ fd3_zsa_state_create(struct pipe_context *pctx,
 
        if (cso->alpha.enabled) {
                so->rb_render_control =
+                       A3XX_RB_RENDER_CONTROL_ALPHA_TEST |
                        A3XX_RB_RENDER_CONTROL_ALPHA_TEST_FUNC(cso->alpha.func);
-               // TODO alpha_ref and alpha_test_enable??
+               so->rb_alpha_ref =
+                       A3XX_RB_ALPHA_REF_UINT(cso->alpha.ref_value * 255.0) |
+                       A3XX_RB_ALPHA_REF_FLOAT(cso->alpha.ref_value);
+               so->rb_depth_control |=
+                       A3XX_RB_DEPTH_CONTROL_EARLY_Z_DISABLE;
        }
 
        return so;

diff --git a/src/gallium/drivers/freedreno/a3xx/fd3_zsa.h b/src/gallium/drivers/freedreno/a3xx/fd3_zsa.h
index 0cc80a8..352c3dd 100644 (file)
--- a/src/gallium/drivers/freedreno/a3xx/fd3_zsa.h
+++ b/src/gallium/drivers/freedreno/a3xx/fd3_zsa.h
@@ -38,6 +38,7 @@
 struct fd3_zsa_stateobj {
        struct pipe_depth_stencil_alpha_state base;
        uint32_t rb_render_control;
+       uint32_t rb_alpha_ref;
        uint32_t rb_depth_control;
        uint32_t rb_stencil_control;
        uint32_t rb_stencilrefmask;

diff --git a/src/gallium/drivers/freedreno/adreno_common.xml.h b/src/gallium/drivers/freedreno/adreno_common.xml.h
index b38537b..796f58d 100644 (file)
--- a/src/gallium/drivers/freedreno/adreno_common.xml.h
+++ b/src/gallium/drivers/freedreno/adreno_common.xml.h
@@ -13,7 +13,7 @@ The rules-ng-ng source files this header was generated from are:
 - /home/robclark/src/freedreno/envytools/rnndb/a2xx/a2xx.xml           (  30005 bytes, from 2013-07-19 21:30:48)
 - /home/robclark/src/freedreno/envytools/rnndb/adreno_common.xml       (   8983 bytes, from 2013-07-24 01:38:36)
 - /home/robclark/src/freedreno/envytools/rnndb/adreno_pm4.xml          (   9759 bytes, from 2013-09-06 12:50:15)
-- /home/robclark/src/freedreno/envytools/rnndb/a3xx/a3xx.xml           (  51536 bytes, from 2013-09-08 13:18:17)
+- /home/robclark/src/freedreno/envytools/rnndb/a3xx/a3xx.xml           (  51659 bytes, from 2013-09-08 18:21:13)
 
 Copyright (C) 2013 by the following authors:
 - Rob Clark <robdclark@gmail.com> (robclark)

diff --git a/src/gallium/drivers/freedreno/adreno_pm4.xml.h b/src/gallium/drivers/freedreno/adreno_pm4.xml.h
index 84339b1..8d981ec 100644 (file)
--- a/src/gallium/drivers/freedreno/adreno_pm4.xml.h
+++ b/src/gallium/drivers/freedreno/adreno_pm4.xml.h
@@ -13,7 +13,7 @@ The rules-ng-ng source files this header was generated from are:
 - /home/robclark/src/freedreno/envytools/rnndb/a2xx/a2xx.xml           (  30005 bytes, from 2013-07-19 21:30:48)
 - /home/robclark/src/freedreno/envytools/rnndb/adreno_common.xml       (   8983 bytes, from 2013-07-24 01:38:36)
 - /home/robclark/src/freedreno/envytools/rnndb/adreno_pm4.xml          (   9759 bytes, from 2013-09-06 12:50:15)
-- /home/robclark/src/freedreno/envytools/rnndb/a3xx/a3xx.xml           (  51536 bytes, from 2013-09-08 13:18:17)
+- /home/robclark/src/freedreno/envytools/rnndb/a3xx/a3xx.xml           (  51659 bytes, from 2013-09-08 18:21:13)
 
 Copyright (C) 2013 by the following authors:
 - Rob Clark <robdclark@gmail.com> (robclark)