- Expose MTLRenderPipelineDescriptor.sampleMaskMVK and
MTLSamplerDescriptor.lodBiasMVK properties when
MVK_USE_METAL_PRIVATE_API build setting is disabled.
- MVKCmdSetDepthBias & MVKCmdSetDepthBounds subclass from MVKSingleValueCommand.
- MVKRenderingCommandEncoderState simplify calls to set depth bias
and depth bounds, and make consistent with other settings.
- Refactor MVKRenderingCommandEncoderState::setContent() and
setMTLContent() to remove need for intermediate value copies.
- MVKPipeline remove test for depth bounds support since
it's checked before GPU encoding.
- MVKDepthBias member order same as in Vulkan calls.
- Whats_New.md consolidate notes about MVK_USE_METAL_PRIVATE_API.