OpenGLnb and OpenGLhq

[Anarchist420]

What are they and what's the difference between them and regular openGL? In dosbox, there are 3 openGL options for the renderer. One is regular "OpenGL", the other two options are in thread title.

 

[Cerb]

OpenGLnb = OpenGL with no bilenear filtering. IE, big ol' squares when running full-screen. Ddraw (windows only), overlay, and surface are probably better choices than this. I can't find screenshots, but I recall trying it and not being impressed. Nearest neighbor isn't always the same as proper scaling. It might be good for a slow computer, though, that can't do square-ish scaling by the CPU.

OpenGL = OpenGL with bilinear filtering. Fuzzy stretching. Ew.

OpenGLhq = my understanding is that this applies an arbitrary scaling factor shader with similar effects to hq2x, hq3x, etc..

 

[Anarchist420]

Okay thanks Cerb: ) That makes sense, but I didn't know because they still give the option for nearest neighbor and hq regardless of the opengl mode selected.