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authorEric Anholt <[email protected]>2009-09-11 14:09:03 -0700
committerEric Anholt <[email protected]>2009-09-11 14:13:47 -0700
commit57d16c4cc37689710f951cb13981e2efc160cd23 (patch)
treedb32d0e4604cb951f2a3ddca51ca558bf236d70b /docs
parenta79eecb9139169fa8c99c0f9cf26db95f3983a36 (diff)
i965: Move OPCODE_DDX/DDY to brw_wm_emit.c and make it actually work.
Previously, it was trying to mess around with the varying's WM setup data to produce a result. Along with not actually working when passed a varying, this wouldn't work if you did dFd[xy]() on a temporary. Instead, just calculate the derivative using the neighbors in the subspan.
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