More Anti-aliasing options

[PIXEL-GAME-DEV]

New to c++ development. Aleph One needs more opengl rendering options and one i find lacking is anti-aliasing.
MSAA should be the perfect option for anti-aliasing since the game is rendered using simple polygons and flat textures.
I figured out where the frame buffer object code is located and tried implementing it myself but it just results in a blank white screen, it must have something to do with the fact that the frame buffer is stored in a texture rectangle and does not line up with conventional methods
I forked and managed to add smoother pixel rendering of fragment shaders using the method described in this video https://www.youtube.com/watch?v=d6tp43wZqps&t
I have not figured out how to add a checkbox to the advanced graphics options. This method relies on linear texture rendering and should force it on.

[treellama]

Yep, MSAA has been broken since we switched indirect rendering. I think it would require render to square texture instead of GL_TEXTURE_RECTANGLE_ARB to make that work. I just force it on with my drivers instead :)

Can you post some comparison screenshots of the near filter AA at work? If you want to submit a pull request that just keys off a boolean in OGL_ConfigureData we can work out where to put a preference, if we think it's worth including. The prefs code is not the best place to learn C++, but it is a place you can learn C++...

[PIXEL-GAME-DEV]

When were the rendering changes made? i might be able to gleam some info from the older code. I was not able to force enable MSAA on my Linux machine. Is there anyone else interested in getting MSAA to work in engine?

[PIXEL-GAME-DEV]

Here are the screenshots.

Latest build and near filtering enabled.

With fragment shader edit and linear filtering enabled.

Look closely at the texels in the game view, wall, surfaces and sprites. User interface is unaffected since it seems to run on special rendering logic somewhere else in the code.