tree 768a6180745f2a964149f1589a751f2cd752f5da
parent 3e5f6fd5e3a17562a85df3b4b0efced78a5b2129
author Nicolas Capens <capn@google.com> 1519756166 -0500
committer Nicolas Capens <nicolascapens@google.com> 1519760061 +0000

Don't perform component swizzling on a null texture.

When sampling from an incomplete texture, the OpenGL spec states that
(0, 0, 0, 1) will be returned to the shader from the texture lookup
function. Swizzling is only described for filtered texture values.

Change-Id: Ie8a02b3b0b9e571fd2f86302e777a4ff985da022
Reviewed-on: https://swiftshader-review.googlesource.com/17488
Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>