- Fold together the shader -> oDepth handling. If these conditions were
not the same, the shader is invalid.

Change-Id: I9bec710886c9961f4141006d2d48f3eb76a3dfee
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/29988
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Tested-by: Chris Forbes <chrisforbes@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>