[Mesa-dev] [PATCH 1/2] util/prim: fix decomposed counts for adjacency primitives

[Jose Fonseca]

----- Original Message -----
> 
> Signed-off-by: Zack Rusin <zackr at vmware.com>
> ---
>  src/gallium/auxiliary/util/u_prim.h |    8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/src/gallium/auxiliary/util/u_prim.h
> b/src/gallium/auxiliary/util/u_prim.h
> index 99bb66c..507d12e 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:
> --
> 1.7.10.4
> 
> 


Reviewed-by: Jose Fonseca <jfonseca at vmware.com>