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swizzle
2009 Jan 25
0
Gallium NV40 Textures
...the texture format(A8R8G8B8) and 0x400 is for the
> size (1x1). For some reason the hw doesn't like 1x1 swizzled
> textures?
Yeah I know what this is about. Swizzling is broken for mip maps. The
first few levels swizzle fine, but after that something screws up. I
think the swizzler has some limitations for the dest surface. dest
must be aligned to some boundary (64 bytes? 128?) i think, so that
means each mip level must be aligned, and we probably aren't obeying
that at the moment. probably the hw won't handle 1xN or Nx1 either.
Try the progs/tests/mipmap_view, IIRC 8...