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authorZack Rusin <[email protected]>2013-06-06 09:04:11 -0400
committerZack Rusin <[email protected]>2013-06-10 22:04:28 -0400
commit3d08eada3450aa8801aed194afea99c816dd71f0 (patch)
tree58e2e1f5f9f7d23dc3ce99418022b9178f8b0a34 /src/gallium/targets/vdpau-radeonsi
parent0a3779d95537343505200ad096acf135dcd81b80 (diff)
gallium: add a cull distance semantic
cull distance is analogous to clip distance. If a register is given this semantic, then the values in it are assumed to be a float32 distance to a plane. Primitives will be completely discarded if the plane distance for all of the vertices in the primitive are < 0. Signed-off-by: Zack Rusin <[email protected]> Reviewed-by: Jose Fonseca <[email protected]> Reviewed-by: Brian Paul <[email protected]> Reviewed-by: Roland Scheidegger <[email protected]>
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