Alejandro Piñeiro dedff7446a v3dv/descriptor_set: support for immutable samplers
They are bound at the set layout, and cannot be changed. From
VkDescriptorSetLayoutBinding spec:

   "pImmutableSamplers affects initialization of samplers. If
   descriptorType specifies a VK_DESCRIPTOR_TYPE_SAMPLER or
   VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER type descriptor, then
   pImmutableSamplers can be used to initialize a set of immutable
   samplers. Immutable samplers are permanently bound into the set
   layout and must not be changed; updating a
   VK_DESCRIPTOR_TYPE_SAMPLER descriptor with immutable samplers is
   not allowed and updates to a
   VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER descriptor with immutable
   samplers does not modify the samplers (the image views are updated,
   but the sampler updates are ignored)"

We stored them as part of the set layout. It also means that when we
need the sampler (like for texture operations) we can't just ask for a
descriptor, as it would not have the sampler. A new method is created.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6766>
2020-10-13 21:21:29 +00:00
2020-08-06 09:46:48 +00:00
2020-01-18 11:39:32 +01:00
2020-08-06 09:46:48 +00:00
2019-10-18 16:42:40 +00:00

`Mesa <https://mesa3d.org>`_ - The 3D Graphics Library
======================================================


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