tree 8ec684ba0b205abd191a12c824dac47ba87b7bb0
parent 2cb385b04cf5445d34d846300a4b90fd861d814c
author Chip Davis <cdavis@codeweavers.com> 1599933405 -0500
committer Chip Davis <cdavis@codeweavers.com> 1600105037 -0500

MVKCmdClearColorImage: Clear linear images on Mac with a shader.

Linear textures on Mac family GPUs aren't renderable, so we cannot use
a `Clear`/`Store` `MTLRenderPass` to clear them. Instead, use a compute
shader to clear them.

I haven't expanded this to all color images, because the
`MTLTextureUsageShaderWrite` usage disables lossless compression on
Apple GPUs, but `RenderTarget` usage does not. Also, multisample
textures do not yet support writing.