Unfortunately it really doesn't matter what's in an OpenGL spec, nor how it compares to Direct3D. What matters are which features the hardware manufacturers cho

Unfortunately it really doesn't matter what's in an OpenGL spec, nor how it compares to Direct3D. What matters are which features the hardware manufacturers choose to support and how well they do so. If the past is any guide then OGL will continue to lag Direct3D for a long time to come. Apple are probably the biggest supplier of high-end OpenGL capable hardware+ outside of the PC market, but unfortunately neither they nor their hardware partners offer full support for OpenGL 3.0 - despite all Mac's manufactured since late 2008 being capable). Even older games such as Portal or Half-life 2 run about 50% faster under Windows & Direct3D on the same hardware. I've developed with both Direct3D and OpenGL on multiple platforms for most of the past twelve years, as well as using platform-specific APIs like libgcm on the PS3. At the end of the day they are all just tools and a means to an end. Those with the best support and tools are the ones I most enjoy using. Currently that's Direct3D, with an honorable mention to libgcm on the PS3. (Unlike the Ars article suggests, nobody serious is writing games on the PS3 using OpenGL)