Pixel perfect DrawRectangleLines under OpenGL 1.1 about raylib

[raysan5]

Hi debiatan! Excuse me for the late response!

Getting pixel-perfect rendering in OpenGL is quite difficult, actually, it highly depends on the graphic card and the driver implementation.

I tested same raylib program on different hardware (AMD/NVIDIA) and I get different results on pixel-alignment.

You can read more about this issue here and here.

Additionally, if you activate some kind of MSAA, disabled by default on raylib (core.c:InitDisplay():914), result are even worse.

I'm afraid there is not a perfect solution...

[debiatan]

I see. That is a sad state of affairs. I'll try drawing degenerate
triangles, instead. I hope vendors will get those right.

Thanks for the discussion and the links.

2014-11-20 19:42 GMT+01:00 Ray [email protected]:

Hi debiatan! Excuse me for the late response!

Getting pixel-perfect rendering in OpenGL is quite difficult, actually, it
highly depends on the graphic card and the driver implementation.

I tested same raylib program on different hardware (AMD/NVIDIA) and I get
different results on pixel-alignment.

You can read more about this issue here
http://stackoverflow.com/questions/10040961/opengl-pixel-perfect-2d-drawing
and here
https://www.opengl.org/discussion_boards/showthread.php/148444-Pixel-perfect-drawing
.

Additionally, if you activate some kind of MSAA, disabled by default on
raylib (core.c:InitDisplay():914), result are even worse.

I'm afraid there is not a perfect solution...

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