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OpenGL & Vulkan

Journeyman III
Journeyman III

[Vulkan] Sample shading is not working on RX6000 series

According to the Vulkan spec ( sample shading should be enabled when ``SampleID or SamplePosition are used in the shaders. It's not the case and work fine with other GPU vendors, but not on AMD GPUs (tested on a RX 6800). Eg. gl_SampleID incorrectly returns 0 all the time.

Getting a repro should be straightforward so I won't provide any.

A bit related to


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