context constants / limits

[zacharias2k]

Why are all opengl context constants hardcoded?
Would be nice to set them after construction of the glsl context.

[aras-p]

Do you have a good idea how to expose that?

[zacharias2k]

I think we should leave the very tiny API as it is, so options are limited.

• The easiest way would be via preprocessor defines, but that wouldn't be very flexible if anyone wants to deliver binaries for different machines.
• a function like glslopt_setlimit(glslopt_ctx*, option, value) - most values are integers, so it should be easy to access, but ugly IMHO, because it's not visible to the user and the context shouldn't change over execution time.
• enhance glslopt_initialize, add some parameters or give it a structure containing the settings.

But i'm not happy with those solutions, you might want to come up with something better.

PS: The reason for this was mainly because of MaxDrawBuffers, which is 2 - far too low, even mesa updated it to 8, years ago, see config.h line 228.

#define MAX_DRAW_BUFFERS 8
You may want to change that too.

[sagaceilo]

I had the same Issue with MAX_DRAW_BUFFERS , especialy if You using some kind of MRT rendering.