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-rw-r--r--src/gallium/auxiliary/draw/draw_context.c2
-rw-r--r--src/gallium/auxiliary/draw/draw_private.h1
-rw-r--r--src/gallium/auxiliary/draw/draw_pt.c3
3 files changed, 6 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/draw/draw_context.c b/src/gallium/auxiliary/draw/draw_context.c
index cdca556fbdf..1e70a775233 100644
--- a/src/gallium/auxiliary/draw/draw_context.c
+++ b/src/gallium/auxiliary/draw/draw_context.c
@@ -49,6 +49,8 @@ struct draw_context *draw_create( void )
draw->use_sse = FALSE;
#endif
+ draw->use_pt_shaders = GETENV( "GALLIUM_PT_SHADERS" ) != NULL;
+
/* create pipeline stages */
draw->pipeline.wide_line = draw_wide_line_stage( draw );
draw->pipeline.wide_point = draw_wide_point_stage( draw );
diff --git a/src/gallium/auxiliary/draw/draw_private.h b/src/gallium/auxiliary/draw/draw_private.h
index 1115166192e..3042d268479 100644
--- a/src/gallium/auxiliary/draw/draw_private.h
+++ b/src/gallium/auxiliary/draw/draw_private.h
@@ -276,6 +276,7 @@ struct draw_context
boolean line_stipple; /**< do line stipple? */
boolean point_sprite; /**< convert points to quads for sprites? */
boolean use_sse;
+ boolean use_pt_shaders; /* temporary flag to switch on pt shader paths */
/* If a prim stage introduces new vertex attributes, they'll be stored here
*/
diff --git a/src/gallium/auxiliary/draw/draw_pt.c b/src/gallium/auxiliary/draw/draw_pt.c
index c8663c0e844..c67a2179820 100644
--- a/src/gallium/auxiliary/draw/draw_pt.c
+++ b/src/gallium/auxiliary/draw/draw_pt.c
@@ -79,6 +79,9 @@ draw_pt_arrays(struct draw_context *draw,
* - backend -- the vbuf_render provided by the driver.
*/
+ if (shading && !draw->use_pt_shaders)
+ return FALSE;
+
if (!cliptest && !pipeline && !shading) {
/* This is the 'passthrough' path: