Mesa (master): r600g: implement seamless_cube_map for evergreen

[Marek Olšák]

Module: Mesa
Branch: master
Commit: d931b0d8b360fc0222d295eca38aaee3e4e5d0be
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=d931b0d8b360fc0222d295eca38aaee3e4e5d0be

Author: Marek Olšák <maraeo at gmail.com>
Date:   Mon May  2 02:38:20 2011 +0200

r600g: implement seamless_cube_map for evergreen

The r600/r700 support will follow soon.

---

 src/gallium/drivers/r600/evergreen_state.c |    1 +
 src/gallium/drivers/r600/evergreend.h      |    9 +++++++++
 src/gallium/drivers/r600/r600_pipe.c       |    5 +++++
 3 files changed, 15 insertions(+), 0 deletions(-)

diff --git a/src/gallium/drivers/r600/evergreen_state.c b/src/gallium/drivers/r600/evergreen_state.c
index 3384a76..502f266 100644
--- a/src/gallium/drivers/r600/evergreen_state.c
+++ b/src/gallium/drivers/r600/evergreen_state.c
@@ -332,6 +332,7 @@ static void *evergreen_create_sampler_state(struct pipe_context *ctx,
 			0xFFFFFFFF, NULL);
 	r600_pipe_state_add_reg(rstate, R_03C008_SQ_TEX_SAMPLER_WORD2_0,
 				S_03C008_LOD_BIAS(S_FIXED(CLAMP(state->lod_bias, -16, 16), 8)) |
+				(state->seamless_cube_map ? 0 : S_03C008_DISABLE_CUBE_WRAP(1)) |
 				S_03C008_TYPE(1),
 				0xFFFFFFFF, NULL);
 
diff --git a/src/gallium/drivers/r600/evergreend.h b/src/gallium/drivers/r600/evergreend.h
index de445b8..670606d 100644
--- a/src/gallium/drivers/r600/evergreend.h
+++ b/src/gallium/drivers/r600/evergreend.h
@@ -1194,6 +1194,15 @@
 #define   S_03C008_FORCE_DEGAMMA(x)                    (((x) & 0x1) << 21)
 #define   G_03C008_FORCE_DEGAMMA(x)                    (((x) >> 21) & 0x1)
 #define   C_03C008_FORCE_DEGAMMA                       0xFFDFFFFF
+#define   S_03C008_ANISO_BIAS(x)                       (((x) & 0x3f) << 22)
+#define   G_03C008_ANISO_BIAS(x)                       (((x) >> 22) & 0x3f)
+#define   C_03C008_ANISO_BIAS                          (~(0x3f << 22))
+#define   S_03C008_TRUNCATE_COORD(x)                   (((x) & 0x1) << 28)
+#define   G_03C008_TRUNCATE_COORD(x)                   (((x) >> 28) & 0x1)
+#define   C_03C008_TRUNCATE_COORD                      (~(1 << 28))
+#define   S_03C008_DISABLE_CUBE_WRAP(x)                (((x) & 0x1) << 29)
+#define   G_03C008_DISABLE_CUBE_WRAP(x)                (((x) >> 29) & 0x1)
+#define   C_03C008_DISABLE_CUBE_WRAP                   (~(1 << 29))
 #define   S_03C008_TYPE(x)                             (((x) & 0x1) << 31)
 #define   G_03C008_TYPE(x)                             (((x) >> 31) & 0x1)
 #define   C_03C008_TYPE                                0x7FFFFFFF
diff --git a/src/gallium/drivers/r600/r600_pipe.c b/src/gallium/drivers/r600/r600_pipe.c
index 779507c..080180f 100644
--- a/src/gallium/drivers/r600/r600_pipe.c
+++ b/src/gallium/drivers/r600/r600_pipe.c
@@ -383,6 +383,11 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param)
 		/* R600 doesn't support per-MRT blends */
 		return family == CHIP_R600 ? 0 : 1;
 
+	/* Supported on Evergreen. */
+	case PIPE_CAP_SEAMLESS_CUBE_MAP:
+	case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
+		return family >= CHIP_CEDAR ? 1 : 0;
+
 	/* Unsupported features. */
 	case PIPE_CAP_STREAM_OUTPUT:
 	case PIPE_CAP_PRIMITIVE_RESTART: