Bill Hollings 74e38659aa Set Metal texture usage to allow texture copy via view.
MVKCmdCopyImage uses texture view if formats different. Enable
MTLTextureUsagePixelFormatView for VK_IMAGE_USAGE_TRANSFER_SRC_BIT.
Refactor mvkMTLTextureUsageFromVkImageUsageFlags() to clarify Metal usages
and enable views on depth-stencil attachments by default.
2019-07-04 15:50:12 -04:00
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