Enhancements to swapchain, GPU display control, and S3TC compression

• Allow 2 or 3 swapchain images to support both double and triple buffering.
• Force display to switch to GPU selected by vkCreateDevice() to avoid system view compositor having to copy from that GPU to display GPU.
• Use inline buffer for pipeline auxiliary buffer.
• vkCmdCopyImage: Cast source image to the destination format.
• Result of vkGetPhysicalDeviceFormatProperties2KHR match vkGetPhysicalDeviceFormatProperties.
• MVKImage: Return error for BLOCK_TEXEL_VIEW.
• MVKDescriptorSet: Fix handling of immutable samplers.
• MVKPipeline: Forbid vertex attribute offsets >= stride.
• Fix handling of case where vertex bindings and binding indices don't match up.
• Return VK_TIMEOUT even on zero wait if fences not signalled.
• Support iOS builds for arm64e architecture.
• Improvements to building external libraries.
• Print Vulkan semantics when logging converted GLSL.
• Support uploading S3TC-compressed 3D images.

Numerous enhancements and fixes

• Replace use of std::vector with MVKVector to support allocations on stack.
• Add missing include MVKEnvironment.h to MVKImage.mm for IOSurfaces.
• vkCmdClearAttachments apply [[render_target_array_index]] more carefully.
• vkCmdPushDescriptorSet: Fix mapping of binding numbers to descriptor layouts.
• Forbid depth/stencil formats on anything but 2D images.
• MVKCommandPool: Destroy transfer images using the device.
• MVKPipeline: Reject non-multiple-of-4 vertex buffer strides.
• MVKPipeline: Set auxiliary buffer offsets once, on layout creation.
• MVKSampler: Support border colors.
• MVKImage: Round up byte alignment to the nearest power of 2.
• MVKImage: Don't set MTLTextureUsageRenderTarget for non-blittable formats.
• MVKImage: Support image views of 2D multisample array images.
• MVKGraphicsPipeline: Add dummy attachments even when rasterization is off.
• MVKDeviceMemory: Try creating an MTLBuffer before allocating heap memory.
• Add support for VK_FORMAT_A2R10G10B10_UNORM_PACK32.
• Support A8B8G8R8_PACK32 formats.
• Add new formats and fix existing ones.
• On macOS, VK_FORMAT_E5B9G9R9_UFLOAT_PACK32 can only be filtered.
• On macOS, linear textures cannot be blitted to.
• Depth formats cannot be used for a VkBufferView.
• Give every image format we support the BLIT_SRC feature.
• Correct supported features of compressed formats.
• Correct mapping of packed 16-bit formats.
• Add some more vertex formats.
• Don't use char/uchar for clearing/copying 8-bit formats.
• Explicitly set number of sparse image property/requirement info sets to 0.
• Retrieve linear image memory alignment requirements from Metal device.
• For each GPU, log MSL version and updated list of feature sets.
• Cube demo on iOS support Portrait and Landscape device orientation.
• Build the dylib with -fsanitize=address when asan is enabled.
• Fix name of generated dSYM file.
• Update to latest SPIRV-Cross version:
  • MSL don't emit memory_scope after MSL 2.0.

Add support for several extensions

• Add support for extensions:
  • VK_KHR_bind_memory2
  • VK_KHR_swapchain_mutable_format
  • VK_KHR_shader_float16_int8
  • VK_KHR_8bit_storage
  • VK_KHR_16bit_storage
  • VK_KHR_relaxed_block_layout
  • VK_KHR_maintenance3
  • VK_KHR_storage_buffer_storage_class
• Add support for 2D multisample array textures.
• Ignore fragment shader if raster discard is enabled.
• Force signedness of shader vertex attributes to match the host.
• In debug configurations, create a dSYM bundle for libMoltenVK.dylib.
• MVKImage: Take lock when setting the MTLTexture manually.
• Optimize MVKFenceSitter.
• Support parallel builds of fetchDependencies to improve build times.
• Change internal header references to increase header path flexibility.
• Update to latest SPIRV-Cross version:
  • MSL: Use an enum instead of two mutually exclusive booleans.
  • MSL: Force signedness of shader vertex attributes to match the host.
  • Support gl_HelperInvocation on GLSL and MSL.

Release for Vulkan SDK 1.1.92

• Remove destroyed resources from descriptor sets.
• Forbid compressed formats on non-2D images.
• Update to latest dependency libraries for Vulkan SDK 1.1.92.
• Update to latest SPIRV-Cross version:
  • MSL: Print early_fragment_tests specifier before fragment shader declaration.
  • MSL: Also pack members at unaligned offsets.
  • MSL: Also pack 2- and 4- element vectors when necessary.
  • MSL: Emit wrapper for SSign (sign() for int types).
  • MSL: Support extended arithmetic opcodes.
  • Handle opcode OpSourceContinued.
  • Handle group decorations.

Memory types, bitcode, MSL 8/16-bit & spec constants

• Fix memoryTypes order to match Vulkan spec.
• Allow linear images to use host-coherent memory.
• Generate Bitcode in iOS libraries.
• Allow all pipeline attachements to be unused.
• Perform usage checks on 3D images.
• Enhancements to dylib generation script.
• Update to latest SPIRV-Cross version:
  • MSL: Support 8 & 16 bit types.
  • MSL: Updated spec constant support.

Refactor the build environment

• Refactor the build environment.
  • Support creation of static library and build framework and dynamic library from it.
  • Add Makefile to better support command line or script building integration.
  • Update demos to each use one of framework, static library, and dynamic library.
  • Refactor and rename the build scripts.
  • Refactor and rename the Xcode Schemes.
  • Update build and runtime documentation.
• Update shader caching for compatibility with texture swizzling.
• Support polygonMode VK_POLYGON_MODE_POINT.
• vkCreateInstance returns VK_ERROR_INCOMPATIBLE_DRIVER if Metal not available.

Support arbitrary swizzles of image data

• Support arbitrary swizzles of image data.
• Include struct size parameter in VK_MVK_moltenvk extension functions that pass structs that
  might change size across extension versions.
• Remove vkGetMoltenVKDeviceConfigurationMVK() & vkSetMoltenVKDeviceConfigurationMVK() functions.
• Allocate MVKDescriptorSets from a pool within MVKDescriptorPool
• Support copying between textures of compatible-sized formats
• Support VK_FORMAT_A2B10G10R10_UNORM_PACKED vertex format
• Build scripts support SRCROOT path containing spaces.

Release for Vulkan SDK 1.1.85

• Add support for features:
  • shaderStorageImageMultisample
  • shaderStorageImageReadWithoutFormat
  • shaderStorageImageWriteWithoutFormat
  • shaderUniformBufferArrayDynamicIndexing
  • shaderSampledImageArrayDynamicIndexing
  • shaderStorageBufferArrayDynamicIndexing
  • shaderStorageImageArrayDynamicIndexing
• Support reduced render area
• Support rasterization to missing attachment
• Allocate MVKCommandBuffers from a pool within MVKCommandPool.
• Update glslang version
• Update to latest SPIRV-Cross version:
  • MSL: Improve coordinate handling for buffer reads.
  • MSL: Expand arrays of buffers passed as input.

Add extensions and update SPIRV_Cross.

• Add support for extensions:
  • VK_KHR_maintenance2
  • VK_EXT_vertex_attribute_divisor
  • VK_KHR_sampler_mirror_clamp_to_edge
  • VK_KHR_image_format_list
  • VK_KHR_dedicated_allocation
  • VK_KHR_get_memory_requirements2
  • VK_EXT_shader_viewport_index_layer
• Support multiple viewports and scissor rectangles.
• Support sampleRateShading.
• Support pre-filling Metal command buffer on same thread as Vulkan command buffer.
• Support passing either a CAMetalLayer or an NSView/UIView in the pView member
  when creating a surface.
• Support views of the stencil aspect of depth/stencil images.
• Improvements to subviews on 3D textures.
• Enforce single queue per queue family to improve Metal command buffer handling.
• Set Metal render target sizes on iOS.
• Fix potential deadlocks on query results and fences.
• Fix memory leak on SPIRV conversion.
• Update to Vulkan header 1.1.85 and latest version of library dependencies.
• Update to latest SPIRV-Cross version:
  • MSL: Handle the ViewportIndex builtin.
  • MSL: Handle the SamplePosition builtin.
  • MSL: Fix OpAtomicIIncrement and OpAtomicIDecrement.
  • MSL: Support array of arrays composites and copying.
  • MSL: Fix issues with casting of builtin integer vectors.

Add extensions and update SPIRV_Cross.

• Add support for extensions:
  • VK_KHR_descriptor_update_template
• Create 3D MTLTextureViews for 2D image views of 3D textures.
• Allow building and packaging MoltenVK for of only iOS or only macOS.
• Move packaging scripts out of Xcode projects and into script files.
• vkUpdateDescriptorSet: Handle copies of uninitialized descriptors.
• vkCmdFillBuffer & vkCmdCopyBuffers: Use dispatch call that supports older OS versions.
• Update to latest SPIRV-Cross version:
  • MSL: Emit F{Min,Max,Clamp} as fast:: and N{Min,Max,Clamp} as precise
  • MSL: Implement multisampled array textures.
  • MSL: Emit spvTexelBufferCoord() on ImageWrite to a Buffer.
  • MSL: Handle interpolation qualifiers.
  • MSL: Account for components when assigning locations to varyings.
  • MSL: Do not emit function constants for version < 1.2.