19:28 <enunes> sarbes: cool, did you get that from GLES 1 or from guessing at the hardware description?

19:30 <enunes> anarsoul: do you have thoughts on setting the mixed_framebuffer_sizes cap to enable GL_ARB_framebuffer_object (in addition to EXT_framebuffer_object)? I feel like this was already considered before?

19:30 <anarsoul> enunes: it's not supported by the hardware

19:31 <enunes> perhaps we were too strict if there is some corner case, but lima already implements all the "multiple disjoint extensions into a single ARB extension" listed in https://registry.khronos.org/OpenGL/extensions/ARB/ARB_framebuffer_object.txt

19:31 <anarsoul> i.e. color and z buffers cannot have different dimensions

19:31 <enunes> it prevents hundreds of piglit tests from running based on saying that glBlitFramebuffer is not supported

19:31 <enunes> lima is the only driver which does not set it, vc4 does with the reason to enable those piglit tests

19:32 <enunes> and the GL 2.1 support is kind of a lie anyway, so... maybe we don't have to be that strict for that particular case

19:32 <anarsoul> it is supported in vc4 though

19:33 <anarsoul> we'd have to do 2x draws (if color widthxheight doesn't match z widthxheight) if we want to support it

19:35 <anarsoul> i.e. utgard cannot do that:

19:35 <anarsoul> - Where appropriate, relax some of the constraints expressed by previous

19:35 <anarsoul> implementations the freedom to support more flexible usages where

19:35 <anarsoul> FBO-related extensions. In particular the requirement of matching

19:35 <anarsoul> possible.

19:35 <anarsoul> attachment dimensions and component sizes has been relaxed, to allow

19:35 <enunes> https://pacific.enunes.eu/user/mesa/-/commit/2b6711cc5fbb06620f46d3a42823bf03b58e9e34

19:36 <enunes> oops, thats my local gitlab

19:36 <enunes> https://gitlab.freedesktop.org/mesa/mesa/-/commit/2b6711cc5fbb06620f46d3a42823bf03b58e9e34

19:37 <enunes> I meant it more like this, so that we can allow all those piglit tests to run

19:38 <anarsoul> well, sure

19:39 <enunes> I worked on the srgb stuff and when trying to test it, most tests don't actually run because of this

19:42 <enunes> on my run thats around 400 tests

19:43 <enunes> not sure how many actually test the multiple sizes part though

19:45 <sarbes> It had to be implemented in hardware, or so I thought. And the "hole" in the blend func was pretty telling.

19:46 <sarbes> Logicops, that is.

19:53 <enunes> sarbes: yeah, nice. so just a hint don't know if you had considered it, but this is also in GLES 1 which is also implemented by the blob driver, GLES 1 is a bit of a forgotten source of info for these older features

19:54 <sarbes> Are there more GLES 1 features missing? I'm not very knowledgeable in this area.

19:57 <enunes> one time I started this https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7825 , apparently it's been 4 years... probably wont realistically finish that myself any time soon, so if anyone is ever interested I guess it would be free to get :)

19:58 <enunes> this one might be more relevant though being useful for more real applications https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16136 , same situation