diff options
author | Brian <[email protected]> | 2008-02-21 16:56:32 -0700 |
---|---|---|
committer | Brian <[email protected]> | 2008-02-21 16:56:32 -0700 |
commit | 446bfc32a83008e0865ec869bc80b920c907f10f (patch) | |
tree | 8d19dd335aa2bdbc5dcd51dd91d6f143bad8a662 /src/gallium/drivers/softpipe | |
parent | eb4dc2dd5ed62e6ccb55ccc2bc13f6a2f3fc1f76 (diff) |
gallium: new draw stage for polygon stipple.
For hardware without native polygon stipple. Create a 32x32 alpha texture
that encodes the stipple pattern. Modify the user's fragment program to
sample the texture (with gl_FragCoord) and kill the fragment according to
the texel value.
Temporarily enabled in softpipe driver, replacing the sp_quad_stipple.c step.
Diffstat (limited to 'src/gallium/drivers/softpipe')
-rw-r--r-- | src/gallium/drivers/softpipe/sp_context.c | 5 | ||||
-rw-r--r-- | src/gallium/drivers/softpipe/sp_context.h | 7 | ||||
-rw-r--r-- | src/gallium/drivers/softpipe/sp_quad.c | 2 |
3 files changed, 14 insertions, 0 deletions
diff --git a/src/gallium/drivers/softpipe/sp_context.c b/src/gallium/drivers/softpipe/sp_context.c index de4c6c18e7f..2cdf3c75bf3 100644 --- a/src/gallium/drivers/softpipe/sp_context.c +++ b/src/gallium/drivers/softpipe/sp_context.c @@ -332,6 +332,11 @@ struct pipe_context *softpipe_create( struct pipe_winsys *pipe_winsys, draw_install_aaline_stage(softpipe->draw, &softpipe->pipe); draw_install_aapoint_stage(softpipe->draw, &softpipe->pipe); +#if USE_DRAW_STAGE_PSTIPPLE + /* Do polygon stipple w/ texture map + frag prog? */ + draw_install_pstipple_stage(softpipe->draw, &softpipe->pipe); +#endif + /* sp_prim_setup can do wide points (don't convert to quads) */ draw_convert_wide_points(softpipe->draw, FALSE); diff --git a/src/gallium/drivers/softpipe/sp_context.h b/src/gallium/drivers/softpipe/sp_context.h index a50cee76486..feeafc70846 100644 --- a/src/gallium/drivers/softpipe/sp_context.h +++ b/src/gallium/drivers/softpipe/sp_context.h @@ -39,6 +39,13 @@ #include "sp_quad.h" +/** + * This is a temporary variable for testing draw-stage polygon stipple. + * If zero, do stipple in sp_quad_stipple.c + */ +#define USE_DRAW_STAGE_PSTIPPLE 1 + + struct softpipe_winsys; struct softpipe_vbuf_render; struct draw_context; diff --git a/src/gallium/drivers/softpipe/sp_quad.c b/src/gallium/drivers/softpipe/sp_quad.c index 6bd468a51cf..15b5594547d 100644 --- a/src/gallium/drivers/softpipe/sp_quad.c +++ b/src/gallium/drivers/softpipe/sp_quad.c @@ -112,7 +112,9 @@ sp_build_quad_pipeline(struct softpipe_context *sp) sp_push_quad_first( sp, sp->quad.earlyz ); } +#if !USE_DRAW_STAGE_PSTIPPLE if (sp->rasterizer->poly_stipple_enable) { sp_push_quad_first( sp, sp->quad.polygon_stipple ); } +#endif } |