gallium: disable the selection/feedback draw module's options for wide lines, points, etc.

Disable paths that would convert points/lines to tris as that upsets selection,
feedback, rastpos.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/mesa/state_tracker/st_context.c b/src/mesa/state_tracker/st_context.c
index 7c183865753..726e06d7c2b 100644
--- a/src/mesa/state_tracker/st_context.c
+++ b/src/mesa/state_tracker/st_context.c
@@ -95,6 +95,14 @@ st_create_context_priv( GLcontext *ctx, struct pipe_context *pipe )
 
    st->draw = draw_create(); /* for selection/feedback */
 
+   /* Disable draw options that might convert points/lines to tris, etc.
+    * as that would foul-up feedback/selection mode.
+    */
+   draw_wide_line_threshold(st->draw, 1000.0f);
+   draw_wide_point_threshold(st->draw, 1000.0f);
+   draw_enable_line_stipple(st->draw, FALSE);
+   draw_enable_point_sprites(st->draw, FALSE);
+
    st->dirty.mesa = ~0;
    st->dirty.st = ~0;