Why Irrlicht doesn't support Cg and CgFX ?

[marco.siino]

There is a particular reason for which irrlicht doesn't support Cg and CgFX ? I want to try to implement it, but first i want to know if there is a reason for which it has not be done before (incompatibilities, etc...)

THanks!

[hybrid]

Cg needs external libraries to do the same thing as all the other shaders AFAIK. So it would be better to use a Cg compiler initially and put the generated shader into the app. But since many people like Cg it might become part of the contribution files of Irrlicht.

[marco.siino]

I think an effect shader might be useful more than Cg itself. But DirectX FX files are not cross platform, so i think CgFX support in Irrlicht could be an useful thing. I think external libraries is not a very big problem...

[Electron]

I believe Cg shaders are the only fully cross-platform shaders in the sense that a cg shader can be compiled for use with directx or opengl, and the Cg API provides functions for handling Cg shaders in both OpenGL and DirectX . To the best of my knowledge this is not possible with HLSL or GLSL, although both of those language obviously have their own advantages.