Bill Hollings 8e45217fbd Fix Metal buffer index binding overrides for push constants and attachment clearing.
Push constants and attachment clearing can temporarily override Metal buffer
bindings for descriptor sets and vertex attributes. Mark the overridden buffer
bindings and ensure they are reinstated when the pipeline is updated.

- Add MVKMTLBufferBinding::isOverridden to track if buffer binding is
  temporarily overridden.
- Rename MVKResourcesCommandEncoderState::markIndexDirty()
  to markBufferIndexOverridden() to mark buffer bindings as overridden.
- Rename MVKGraphicsResourcesCommandEncoderState::markBufferIndexDirty()
  to markBufferIndexOverridden().
- Rename MVKComputeResourcesCommandEncoderState::markBufferIndexDirty()
  to markBufferIndexOverridden().
- Add MVKResourcesCommandEncoderState::markOverriddenBufferIndexesDirty()
  to mark overridden buffer bindings as dirty.
- Add MVKGraphicsResourcesCommandEncoderState::markOverriddenBufferIndexesDirty()
  and call when render pipeline change is encoded
- Add MVKComputeResourcesCommandEncoderState::markOverriddenBufferIndexesDirty()
  and call when compute pipeline change is encoded.
2022-11-30 00:01:07 -05:00
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