tree 5ab234e20ca45c2b342b1823d4b68b687c151089
parent 7693ebe31356266d6f3f7a7726fe53e61d3d6ee8
author Bill Hollings <bill.hollings@brenwill.com> 1528154132 -0400
committer Bill Hollings <bill.hollings@brenwill.com> 1528154132 -0400

Support using Metal texel buffer for linear images to increase host coherency.

MVKDeviceMemory track MVKImages and MVKBuffers separately.
Per Vulkan spec, restrict linear images to 2D, non-array, single mipmap.
Use texel buffer if possible for texture on coherent device memory.
Only flush MVKImages (not MVKBuffers) when device memory mapped.
Do not flush texel buffer images.