TruetypeOversample demo crashes when gamma correction and black background used at the same time:
Assertion failed: (value >= 0.0f && value <= 1.0f), function LinearToSRGB, file /Library/Caches/com.apple.xbs/Sources/GPUDriversIntel/GPUDriversIntel-10.10.18/Common/GLRenderer/Intel/bdw/intel_types_util.h, line 763.