Bill Hollings has announced the release of MoltenVK Vulkan 1.1 Support and Vulkan SDK 1.2.154.

MoltenVK is a driver-level implementation of the Vulkan 1.0 graphics and compute API, that runs on Apple's Metal graphics and compute framework on both iOS and macOS.

MoltenVK allows you to use the Vulkan graphics and compute API to develop modern, cross-platform, high-performance graphical games and applications, and to run them across many platforms, including both iOS and macOS.

Note: This release contains changes to library paths and framework linking options.

• Add support for Vulkan 1.1, including:
  • The vkEnumerateInstanceVersion() function
  • The vkGetDeviceQueue2() function
  • Protected memory (non-functional)
  • A feature struct for VK_KHR_shader_draw_parameters
  • All extensions that were promoted to core in Vulkan 1.1
• Add support for extensions:
  • VK_KHR_portability_subset
  • VK_KHR_create_renderpass2
  • VK_KHR_depth_stencil_resolve
  • VK_KHR_external_fence (non-functional groundwork for future extensions,
    including support for GCD and Mach semaphores)
  • VK_KHR_external_fence_capabilities (non-functional groundwork for future
    extensions, including support for GCD and Mach semaphores)
  • VK_KHR_external_semaphore (non-functional groundwork for future
    MTLSharedEvent Vulkan extension)
  • VK_KHR_external_semaphore_capabilities (non-functional groundwork for
    future MTLSharedEvent Vulkan extension)
  • VK_KHR_multiview
  • VK_KHR_shader_subgroup_extended_types
• Remove support for obsolete VK_EXTX_portability_subset extension.
• Redesign build and linking options that leverage newer framework technology:
  • Add comprehensive support for multi-platform, multi-architecture XCFrameworks.
  • Build fat single-platform, multi-architecture dylibs.
  • Add support for Apple Silicon builds for macOS and Simulators.
  • Remove support for distinct legacy frameworks and static libraries.
  • Remove support for fat libraries and frameworks that span device and simulators.
  • Combine MoltenVKSPIRVToMSLConverter and MoltenVKGLSLToSPIRVConverter frameworks
    into a single MoltenVKShaderConverter framework.
• Support copying between 3D and 2D images.
• Support clearing 3D images.
• Support linear images and buffer views in shared memory on macOS 10.15.5+.
• Support VK_IMAGE_CREATE_EXTENDED_USAGE_BIT.
• Support multiple aliased images for dedicated image memory allocations.
• Improve performance of tessellation control pipeline stage by processing multiple
  patches per workgroup.
• vkCmdBindDescriptorSets order pDynamicOffsets by descriptor binding number
  within each descriptor set.
• vkCmdCopyImage on macOS flush non-coherent image memory before copy operation.
• Process multiple patches per workgroup in a tessellation control shader.
• Initialize tessellation related variables conditionally in indirect draws.
• Fix build errors on Simulator not supporting MTLDrawable present time options.
• Fix dynamicOffsets ordering based on binding index.
• Ensure the base texture is created when creating a view texture.
• Fix features, alignment, and image properties of chroma subsampled formats.
• Disable variableMultisampleRate feature.
• Permit renderpass to have no attachments.
• Clear linear images using a compute shader.
• Reject attempts to create compressed linear images.
• Always use a texel buffer for atomic linear storage images.
• Use deferred store actions instead of tracking multi-pass draws.
• Use MTLRenderPassDescriptor renderTargetWidth and renderTargetHeight on macOS 10.15 and newer.
• Use a 2D non-arrayed view for 2D non-arrayed attachments.
• Use arrayed textures for layered subpass input.
• Use layered rendering when clearing or resolving images whenever possible,
  and take renderArea into account.
• Streamline image copying when the entire source is being copied to the entire destination.
• Don't set renderTargetArrayLength on devices that don't support it.
• Don't attempt to clear unused attachments and fix vertex count for clearing multiple layers.
• Don't encode commands that draw zero vertices.
• Ignore addressModeW on samplers with unnormalized coordinates.
• Flip GPU when swapchain is created, not when device object is created,
  to optimize this condition if it is not needed.
• Flush source image of a transfer on macOS.
• Fix offset for texel buffers and heaps for multi-planar images.
• Fix memory leak when object create fails.
• Fix several use-after-freed errors.
• Fix applying divisors to instanced vertex attributes.
• Fix issue in accessing MTLTexture for swapchain image planes.
• Fix occasional crash on vertex stage indirect draws.
• Fix reported image format properties for 1D images as 2D.
• VK_EXT_vertex_attribute_divisor fix issues with zero divisors.
• Re-add support for bitcode generation on iOS and tvOS.
• fetchDependencies builds serially by default for better build script integration.
• Combine MoltenVKSPIRVToMSLConverter and MoltenVKGLSLToSPIRVConverter
  frameworks into a single MoltenVKShaderConverter framework.
• Fix Metal validation error when occlusion query and renderpass are in separate
  Vulkan command buffers.
• Fix a crash on starting a query outside a render pass.
• Fix Metal validation error that forbids rendering to an image of zero size.
• Fix issue where descriptor pool releasing descriptor sets it doesn't own.
• Fix issue where load/store actions not set in renderpass that includes compute stage.
• Prevent accidental setColorStoreAction for non-color attachments.
• Fix image copy destination extent of compressed images.
• Fix image resolve sub-region extent.
• Fix owner of merged MVKShaderLibraries.
• Fix rounding of buffer sizing when VK_WHOLE_SIZE is used.
• Fix detection of indexed draw calls.
• vkSetMTLTextureMVK() Fix crash if incoming MTLTexture does not have an associated IOSurface.
• Update dependency libraries to match Vulkan SDK 1.2.154.
• Update to latest SPIRV-Cross version:
  • MSL: Fix handling of matrices and structs in the output control point array.
  • MSL: Enclose args when convert distance(a,b) to abs(a-b).
  • MSL: Fix multiview view index calculation with a non-zero base instance.
  • MSL: Don't set the layer for multiview if the device doesn't support it.
  • MSL: Fix OpCompositeInsert and OpVectorInsertDynamic.
  • MSL: Support layered input attachments.
  • Ensure that we use primary alias type when emitting flattened members.
  • Only rewrite type aliases for the base type.
  • Overhaul how we deal with reserved identifiers.
  • Implement a simple evaluator of specialization constants.
  • Deal with case where a selection construct conditionally merges/breaks.
  • Allow flip_vert_y in all relevant stages.
  • Clean up conditional branch codegen.

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