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-rw-r--r--src/gallium/auxiliary/util/u_prim.h8
1 files changed, 4 insertions, 4 deletions
diff --git a/src/gallium/auxiliary/util/u_prim.h b/src/gallium/auxiliary/util/u_prim.h
index 99bb66c9b89..507d12e8096 100644
--- a/src/gallium/auxiliary/util/u_prim.h
+++ b/src/gallium/auxiliary/util/u_prim.h
@@ -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: