Apple bug reports

kvark:

• 39726760: getting the maximum command buffer count supported by a queue
  • closed as fixed (the constructor now properly respects the given maximum)
  • but no actual query is added
• 39939902: document thread safety
• 40708496: overheating with GPU capture open
• 40574782: viewport depth ranges
  • only affects macOS 10.13 and earlier on Intel GPUs
  • workaround provided
• 40849018: depth copies
• 40355147: format aliasing for texture copies
• 40769756: slice aliasing for layered rendering
• 40772035: rgba32 clears
• 40918896: shader internal compiler error
  • fixed in 10.14
• 41773990: non-tracking command buffer still releases the resources used
• 41852798: command buffer releases the tracked resources twice
• 43471372: driver PSO caching effect on performance
• 44082896: dual-source blending on Intel

grovesNL:

• 40476045: "cannot have global constructors (`llvm.global_ctors)" in compute
  • closed as duplicate of 35908470
  • should be available in macOS 10.14 beta
• 40506294: querying support between feature sets/OS versions/how to know whether certain selectors such as buffers are available)
• 40152566: clarification on copyFromBuffer 4-byte alignment
  • 1-byte aligned copies did not warn on certain devices
  • Apple states that these are not tested and may or may not succeed
• 40302473: Metal validation enforces a pixel format to be set despite nil fragmentFunction and no color attachments/depth/stencil
• 40244028: clarification on mipmapLevelCount for MTLTextureType1D in MTLTextureDescriptor
  • validation error states that 'MTLTextureDescriptor requests a mipmapLevelCount of 9 but the texture type MTLTextureType1D requires that mipmapLevelCount is 1 but the documentation does not seem to explicitly state this anywhere
• 39726960: clarification on limits for newCommandQueueWithMaxCommandBufferCount
  • same as 39726760
• 39822474: clarification on maximum texture size/how to query
  • textures larger than stated maximum buffer size are possible
• 43707452: clarification of lodAverage macOS support