Atomic operations on buffers are missing #15
Description
It seems to me that atomic operations on buffers as e.g. atomicAdd() that are supported by GLSL are currently missing in circle when compiling to SPIR-V binaries. My impression was that atomic operations on images are supported, but not on simple buffers.
Trying to use the atomic_ref() feature of modern C++ also does not work, so atomic_ref seems to be no alternative.
Supporting the atomic GLSL operations on buffers, as e.g. atomicAdd() ... would be sufficient for me in case that atomic_ref() would not be possible with circle.