Chip Davis 2583321657 MSL: Add an option to insert texture swizzles into generated shaders. ... It's intended to be used with MoltenVK to support arbitrary `VkComponentMapping` settings. The idea is that MoltenVK will pass a buffer (which it set to some buffer index that isn't being used) containing packed versions of the `VkComponentMapping` struct, one for each sampled image. Yes, this is horribly ugly. It is unfortunately necessary. Much of the ugliness is to support swizzling gather operations, where we need to alter the component that the gather operates on--something complicated by the `gather()` method requiring the passed-in component to be a constant expression. It doesn't even support swizzling gathers on depth textures, though I could add that if it turns out we need it.		2018-09-19 22:32:24 -05:00
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frag	MSL: Add an option to insert texture swizzles into generated shaders.	2018-09-19 22:32:24 -05:00
vert	Refactor out noopt shaders to their own folders.	2018-03-13 10:39:49 +01:00