There's no reason to have any limitation on granularity in
SwiftShader, so the granularity is always 1 pixel.

Passes all tests in:
dEQP-VK.api.granularity

Bug b/119620965

Change-Id: Ie2f09737c0054da1b6806b9572e515446a8b1263
Reviewed-on: https://swiftshader-review.googlesource.com/c/24890Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>