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authorZack Rusin <[email protected]>2013-07-11 12:16:06 -0400
committerZack Rusin <[email protected]>2013-07-11 20:19:04 -0400
commit00cd455bd50c6b16b2f72a6d2726de3d3818c7f5 (patch)
tree2b13c67bd84020a1bad285c3678b497a571ae1a4 /common.py
parenta171812d27afb1a52c5d81deaa6027f30bc102e8 (diff)
gallium: fixup definitions of the rsq and sqrt
GLSL spec says that rsq is undefined for src<=0, but the D3D10 spec says it needs to be a NaN, so lets stop taking an absolute value of the source which completely breaks that behavior. For the gl program we can simply insert an extra abs instrunction which produces the desired behavior there. Signed-off-by: Zack Rusin <[email protected]> Reviewed-by: Roland Scheidegger <[email protected]> Reviewed-by: Brian Paul <[email protected]>
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