From 446bfc32a83008e0865ec869bc80b920c907f10f Mon Sep 17 00:00:00 2001 From: Brian Date: Thu, 21 Feb 2008 16:56:32 -0700 Subject: 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. --- src/gallium/drivers/softpipe/sp_context.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'src/gallium/drivers/softpipe/sp_context.h') 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; -- cgit v1.2.3