In Panda3d there was a noticeable performance impact when you switched on orthographic projection. Especially on very old graphics cards. And then I was sitting and thinking about how should I realize my game’s graphics, and was thinking about any possible way how to push in a few more FPS just by, well changing the whole game concept And there I thought about this, and wanted to put up a benchmark, but then I figured out, I could just ask.
So speak in numbers. 1% is enough I really want to see how this kind of game could be realized in iso-graphics. Though I think I’ll increase the overall field of view and point the camera in the direction going, still need to test how that and moving the center of view a little higher would have an impact on the experience.
^there you see my weakness, I would be a horrible final boss!
it all depends on what orth is showing on screen. This potentially is more or less than perspective, depending on what is visible and rendering. Simply switching to it does not change anything.
Even if it was software rendering, its hard to see why mathematically one would be more computationally expensive. As hippocoder pointed out, orthographic and perspective rendering of the same area can show vastly different amounts of polygons depending on clips, fov, etc. Personally, I’m currently working in an ortho environment, and I haven’t noticed anything out of the ordinary.
And there I thought about this, and wanted to put up a benchmark, but then I figured out, I could just ask.