My sampler is created with address mode U, V, and W all set to addressModeU. The flags parameter of the samplercreateinfo structure includes the VK_SAMPLER_CREATE_NON_SEAMLESS_CUBE_MAP_BIT_EXT value. Yet cubemap faces are still “leaking” along the edges when linear filtering is enabled:
Using nearest filtering shows that the cubemap pixels are not the problem:
Windows 10, GEForce 1660