Add support for Geom shaders in Vulkan backend.
Still requires SkSL support before it will work.
The main changes here involve support for uniforms in the geometry shader.
We use the same buffer for vertex and geometry shader stages. These
uniforms are not expected to be updated as often as frag data so we keep them
separate to avoid larger buffer uploads to the gpu.
BUG=skia:
Change-Id: I10b631c24071b6ffa258907a02a009ec6c8accd0
Reviewed-on: https://skia-review.googlesource.com/8413
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Jim Van Verth <jvanverth@google.com>
12 files changed