@aeva Huh, it must default to a really low version, which is why so many extensions say they're unsupported. Thanks so much! I'll go try it right away.
...
Yes, all extensions except ARB_vertex_program are now supported!
@aeva @landelare https://nopaste.net/aTFTXWDVRU
Other than that just the usual gtk init and creating a GtkGlArea.
@aeva @landelare Oh, sure. I don't have a "glxinfo" command, but visualinfo produces this: https://nopaste.net/l92XzrU5kr which... oddly includes GL_EXT_shader_image_load_store.
I'm clearly doing something wrong. Not sure how I could get a working OpenGL program running, without it saying extensions that are supported, are supported. Maybe you have to set a specific... mode, before they get supported?
@landelare @aeva I was using printf in a CPU side program, to print the "GLEW_ARB_shader_image_load_store" variable, which I think the OpenGL Extension Wrangler would set to 1, if ARB_shader_image_load_store was supported by my graphics card.
I made sure to call glewInit and have a valid context and all.