There were a bunch of warnings on Windows:
- Precision loss through type conversion
- Switch statement containing only default case
- Zero sized array

Bug b/130335507

Change-Id: I809db29db16f5dfd62d03d40353f4f2e0f6c3c93
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/28768Tested-by: Alexis Hétu <sugoi@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>