message: atomic operations on buffers aren't writeonly
diff: //#include "texsample.h" // while includes aren't supported in glslang, this will be added in code
  -layout(binding=0, std140) writeonly buffer minmaxresultdest
  +layout(binding=0, std140) buffer minmaxresultdest
  {
  uvec4 result[HGRAM_NUM_BUCKETS];
  } dest;
  