Pavel Ondračka
8cfc44aace
It is not possible to rewrite it to a native swizzle later on R300/R400. The way the native rewrite currently works, it will create bunch of movs with the given presubtract and partial swizzles, however no constant swizzle for presubtract source exists so it is just not possible to rewrite it. This prevents an infinite loop in supertuxkart shader when we really start enforcing the presubtract swizzle limitations during native swizzle rewrite in the next commit. Signed-off-by: Pavel Ondračka <pavel.ondracka@gmail.com> Reviewed-by: Filip Gawin <filip@gawin.net> Tested-by: Filip Gawin <filip@gawin.net> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19764>
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