Bill Hollings has announced the release of MoltenVK Vulkan SDK 1.2.141.

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.

New in Vulkan SDK 1.2.141

• Add support for extensions:
  • VK_GOOGLE_display_timing
  • VK_KHR_external_memory (non-functional groundwork for future
    Metal-resource Vulkan extension).
  • VK_KHR_external_memory_capabilities (non-functional groundwork
    for future Metal-resource Vulkan extension).
• Memory consumption improvements in command handling and vector pre-allocation optimizations.
• vkQueuePresentKHR() returns a VkResult for each swapchain.
• MVKPipeline disable fragment shader outputs for unused attachments.
• MVKBuffer support texel buffers in host-coherent memory on Mac.
• MVKDescriptor pass buffers to shaders that do atomic image accesses.
• Support vertex attribute offsets larger than the vertex buffer stride.
• Fix crash when more than two GPUs.
• Fix issue where vkGetPhysicalDeviceFormatProperties() incorrectly returned
  properties for unsupported formats.
• Fix stack overflow in when logging and reporting very long messages.
• Fix situation where compute pipeline state not retained across copy and renderpass operations.
• Fix buffer offset calculation.
• Fixes to maximum FPS calculations.
• Fix buffer size passed to shaders when VkDescriptorBufferInfo.range set to VK_WHOLE_SIZE.
• Update maximum number of framebuffer layers to 2048.
• Support stencil only image formats in identity swizzle case.
• Enables format atomic capabilities only when format supports it.
• Add MVKSmallVector as a more memory efficient substitute of MVKVector.
• Reinstate VulkanSamples API-Samples demo apps and add
  input_attachment and push_descriptors demos.
• Add MVK_CONFIG_AUTO_GPU_CAPTURE_OUTPUT_FILE environment variable
  to support capturing GPU traces to a file.
• Consolidate frame and non-frame performance reporting.
  • Remove vkGetSwapchainPerformanceMVK() from API.
  • Swapchain performance can be retrieved with other activity performance
    through vkGetPerformanceStatisticsMVK().
  • Add MVK_CONFIG_PERFORMANCE_LOGGING_INLINE env var to enable/disable
    logging of performance of each activity when it happens.
  • Reduce thread locking on performance statistics collection.
• Numerous documentation typo corrections.
• Support Xcode 11.5.
• Update dependency libraries to match Vulkan SDK 1.2.141.
• Update to latest SPIRV-Cross version:
  • MSL: mark BuiltInFragCoord as implicitly used for subpass reads.
  • MSL: Deal with cases where builtin is implicitly needed, declared, but unused.
  • MSL: Do not use base expression with PhysicalTypeID OpCompositeExtract.
  • MSL: Add options to control emission of fragment outputs.
  • MSL: Force disabled fragment builtins to have the right name.
  • MSL: Allow removing clip distance user varyings.
  • MSL: Support edge case with DX layout in scalar block layout.
  • MSL: Deal correctly with initializers on Private variables.
  • MSL: Fix case where subpassInput is passed to leaf functions.
  • MSL: Redirect member indices when buffer has been sorted by Offset.
  • MSL: If the packed type is scalar, don't emit "pack_" prefix.
  • MSL: Avoid packed arrays in more cases.
  • Do not add NonWritable/NonReadable decorations for regular images.
  • Expose a query if samplers or images are comparison resources.

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