Any possibility of metal support min/max filter reduction?

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Created May ’22

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We have this on many of our platforms, but Apple doesn't appear to expose this in Metal. Nvidia/AMD have had this for a long time. We can workaround for now, with gather followed by a component min/max on a single channel. For large scale multi-channel downsampling, having access to the sampler setting would be better. This would even work with 3d volumes, etc.

VK_EXT_sampler_filter_minmax

These are the three modes WeightedAverage - basic nearest/blinear/trilinear Min Max

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Answer 1

AlecazamTGC OP

May ’22

enum MTLSamplerMinMagFilter
{
MTLSamplerMinMagFilterNearest,
MTLSamplerMinMagFilterLinear,

MTLSamplerMinMagFilterMin, <- add
MTLSamplerMinMagFilterMax, <- add
}

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