63ed0ffeaf
The hardware ignores the LOD for unnormalized coordinates and samples the base level. A sampler used only by explicit-LOD, implicit-LOD, bias and gradient samples gets a pipeline specialization constant set from its unnormalized bit when the binding plan is prepared. When the constant is set, each of its samples is emitted as OpImageSampleExplicitLod with LOD 0, which is what Vulkan requires of unnormalized samplers. Otherwise the sample keeps its own form. Such shaders are no longer refused. |
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