[graphite] Create and store Vulkan pipelines for loading MSAA from resolve
* Implement VulkanGraphicsPipeline::MakeLoadMSAAPipeline
* Store MSAA load pipelines in a hashmap on the resource provider keying off of RenderPassKeys
* Nothing currently calls ResourceProvider's findOrCreateLoadMSAAPipeline. That will be called from the VulkanCommandBuffer once all the other moving parts have landed.
Change-Id: I2fd90911a8011ccf18045825fbab92f6b934f127
Bug: b/296420752
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/746596
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Nicolette Prevost <nicolettep@google.com>
6 files changed