In Vk don't set dynamic blend constant on Pipeline if we don't use it.

We already don't call the dynamic update for the blend constant if it's
not used. This change makes it so we don't even tell the VkPipeline
to have support for a dynamic blend constant. This allows the driver
to make the pipline objects slightly more optimal.

Change-Id: Ib7ea4e0ec7eeb8e7c1cf165d426ee863fa0a3a00
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/329036
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Greg Daniel <egdaniel@google.com>
1 file changed