tree 1996fed08b229a8ea65f0d575d6e1e5d1e76c115
parent 73c24e4d2f7017b9a4d1e4fb3064e3be9d46ae7a
author Nicolas Capens <capn@google.com> 1596484876 -0400
committer Nicolas Capens <nicolascapens@google.com> 1596722991 +0000

Don't use 2D coordinates for 1D sampling

1D images were being treated as 2D ones with the second coordinate set
to 0.0. It required other workarounds like moving the array layer
coordinate and providing an addressing mode for the second coordinate.
These have been removed, and the texel address calculation now ignores
the second coordinate for 1D images.

Note this doesn't specialize filtering for the 1D case yet, so the
weights for filtering in the v-direction are explicitly zeroed out.

Fixes: b/162858741
Bug: b/134669567
Change-Id: I4684ee0337ac500860e9939087045a953bad813a
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/47428
Presubmit-Ready: Nicolas Capens <nicolascapens@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Chris Forbes <chrisforbes@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>
Kokoro-Result: kokoro <noreply+kokoro@google.com>