Mesa (master): draw: implement line strip adjacency

[Zack Rusin]

Module: Mesa
Branch: master
Commit: eb33dd69540d9d14acc42102f14dcc7d0075943f
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=eb33dd69540d9d14acc42102f14dcc7d0075943f

Author: Zack Rusin <zackr at vmware.com>
Date:   Thu Jun 17 10:54:44 2010 -0400

draw: implement line strip adjacency

---

 src/gallium/auxiliary/draw/draw_gs_tmp.h |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/src/gallium/auxiliary/draw/draw_gs_tmp.h b/src/gallium/auxiliary/draw/draw_gs_tmp.h
index 04f51a6..4687e88 100644
--- a/src/gallium/auxiliary/draw/draw_gs_tmp.h
+++ b/src/gallium/auxiliary/draw/draw_gs_tmp.h
@@ -112,6 +112,11 @@ static void FUNC( struct draw_geometry_shader *shader,
          LINE_ADJ( shader , i + 0 , i + 1, i + 2, i + 3 );
       }
       break;
+   case PIPE_PRIM_LINE_STRIP_ADJACENCY:
+      for (i = 1; i + 2 < count; i++) {
+         LINE( shader, i - 1, i, i + 1, i + 2 );
+      }
+      break;
 
    default:
       debug_assert(!"Unsupported primitive in geometry shader");