gallium: clean up point sprite rasterizer state

Don't need sprite coord origin per coord.
Also, don't need separate sprite enable bit - if all coords have it diabled,
then there are no point sprites (technically, there's a distinction in pre-GL3,
but it only differs in having more leniency in clamping to max size, something
the state tracker would need to handle and the hardware won't bother anyway).
Also, use packed field for the per-coord enables.
All in all, should save 3 dwords in rasterizer state (from 10 down to 7).

2 files changed, 4 insertions, 5 deletions

diff --git a/src/gallium/include/pipe/p_defines.h b/src/gallium/include/pipe/p_defines.h
index 35f3830ebcf..a85a1701536 100644
--- a/src/gallium/include/pipe/p_defines.h
+++ b/src/gallium/include/pipe/p_defines.h
@@ -364,9 +364,8 @@ enum pipe_transfer_usage {
 /**
  * Point sprite coord modes
  */
-#define PIPE_SPRITE_COORD_NONE       0
-#define PIPE_SPRITE_COORD_UPPER_LEFT 1
-#define PIPE_SPRITE_COORD_LOWER_LEFT 2
+#define PIPE_SPRITE_COORD_UPPER_LEFT 0
+#define PIPE_SPRITE_COORD_LOWER_LEFT 1
 
 
 /**
diff --git a/src/gallium/include/pipe/p_state.h b/src/gallium/include/pipe/p_state.h
index ea3ec201eaa..50a4cd6e138 100644
--- a/src/gallium/include/pipe/p_state.h
+++ b/src/gallium/include/pipe/p_state.h
@@ -101,7 +101,8 @@ struct pipe_rasterizer_state
    unsigned poly_smooth:1;
    unsigned poly_stipple_enable:1;
    unsigned point_smooth:1;
-   unsigned point_sprite:1;
+   unsigned sprite_coord_enable:PIPE_MAX_SHADER_OUTPUTS;
+   unsigned sprite_coord_mode:1;     /**< PIPE_SPRITE_COORD_ */
    unsigned point_size_per_vertex:1; /**< size computed in vertex shader */
    unsigned multisample:1;         /* XXX maybe more ms state in future */
    unsigned line_smooth:1;
@@ -143,7 +144,6 @@ struct pipe_rasterizer_state
    float point_size;           /**< used when no per-vertex size */
    float offset_units;
    float offset_scale;
-   ubyte sprite_coord_mode[PIPE_MAX_SHADER_OUTPUTS]; /**< PIPE_SPRITE_COORD_ */
 };