Regardless of how this shader is restructured, the first int-to-float conversion is always hugely expensive. Why?pic.twitter.com/5Jw7kPKfP6
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@warrenm looks suspicious. The conversions could be done CPU side once instead of per pixel. But the next line is a dependent read which is
@_psonice Yeah, the dependent read sucks and is totally mandated by the API. Also, no way to issue the transform client-side