[snuxoll]

Sony has historically supported a variant of OpenGL on the PS3 (in addition to their low level API) - I would be surprised if they don't have one for the PS4.

[corysama]

I worked on PS3. PSGL is the half-truth rumor that refuses to die. It was an experimental GLES1.0 with Nvidia's Cg shaders as an extension. I don't think any games actually used it.

https://en.m.wikipedia.org/wiki/PSGL

[pjmlp]

Besides what corysama replied, there are a few game blogs that described how bad it was, but I cannot link to them as I am behind a proxy currently.