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util/prim: fix decomposed counts for adjacency primitives 

Signed-off-by: Zack Rusin <zackr@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
This commit is contained in:
Zack Rusin 2013-04-18 03:03:14 -07:00
parent c1299204ad
commit e4752d0f56
1 changed files with 4 additions and 4 deletions
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8
src/gallium/auxiliary/util/u_prim.h
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@ -190,13 +190,13 @@ u_decomposed_prims_for_vertices(int primitive, int vertices)
case PIPE_PRIM_TRIANGLE_FAN:
return (vertices > 2) ? vertices - 2 : 0;
case PIPE_PRIM_LINES_ADJACENCY:
return vertices / 2;
return vertices / 4;
case PIPE_PRIM_LINE_STRIP_ADJACENCY:
return (vertices > 1) ? vertices - 1 : 0;
return (vertices > 3) ? vertices - 3 : 0;
case PIPE_PRIM_TRIANGLES_ADJACENCY:
return vertices / 3;
return vertices / 6;
case PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY:
return (vertices > 2) ? vertices - 2 : 0;
return (vertices > 5) ? 1 + (vertices - 6)/2 : 0;
case PIPE_PRIM_QUADS:
return vertices / 4;
case PIPE_PRIM_QUAD_STRIP: