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[WIP] Add VK_EXT_image_2d_view_of_3d support #2332

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[WIP] Add VK_EXT_image_2d_view_of_3d support #2332

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Commits on Oct 17, 2024

  1. Add VK_EXT_image_2d_view_of_3d support 

    Given a 3D texture that is backed by a placement heap in MoltenVK, the
approach taken here is to create a 2D texture that is backed by memory
pointing into a 3D texture's memory.

While ideal compared to alternative implementation solutions for this
extension, this approach is sensitive to how Apple lays out the memory
for 3D textures. The solution here uses
heapTextureSizeAndAlignWithDescriptor to determine the overall size of a
given 3D texture and index into the beginning of each "slice" of the 3D
texture. So far this is good enough for storage images in CTS.
    @ncesario-lunarg
    ncesario-lunarg committed Oct 17, 2024
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  2. Disable sampler2DViewOf3D 

    Sets VkPhysicalDeviceImage2DViewOf3DFeaturesEXT::sampler2DViewOf3D to
false, as CTS tests involving 2D views of sampled 3D textures are not
currently working.
    @ncesario-lunarg
    ncesario-lunarg committed Oct 17, 2024
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