gallium: add explicit control for point sprites (convert points to textured quads)

New draw_enable_point_sprites() function.
Fixes spriteblast.c demo

1 files changed, 12 insertions, 0 deletions

diff --git a/src/gallium/auxiliary/draw/draw_context.c b/src/gallium/auxiliary/draw/draw_context.c
index e8473a4c572..4cca965ac10 100644
--- a/src/gallium/auxiliary/draw/draw_context.c
+++ b/src/gallium/auxiliary/draw/draw_context.c
@@ -86,6 +86,7 @@ struct draw_context *draw_create( void )
    draw->wide_point_threshold = 1000000.0; /* infinity */
    draw->wide_line_threshold = 1.0;
    draw->line_stipple = TRUE;
+   draw->point_sprite = TRUE;
 
    draw->reduced_prim = ~0; /* != any of PIPE_PRIM_x */
 
@@ -267,6 +268,17 @@ draw_enable_line_stipple(struct draw_context *draw, boolean enable)
 
 
 /**
+ * Tells draw module whether to convert points to quads for sprite mode.
+ */
+void
+draw_enable_point_sprites(struct draw_context *draw, boolean enable)
+{
+   draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE );
+   draw->point_sprite = enable;
+}
+
+
+/**
  * Ask the draw module for the location/slot of the given vertex attribute in
  * a post-transformed vertex.
  *