Mesa / Nouveau Gets Support For ARB_indirect_parameters

[phoronix]

Phoronix: Mesa / Nouveau Gets Support For ARB_indirect_parameters

Ilia Mirkin has landed some more notable feature code into Mesa this evening...

http://www.phoronix.com/scan.php?page=news_item&px=Nouveau-Indirect-Parameters

[OneTimeShot]

Always good to see progress, but Gallium is starting to fall a way behind Intel. It'd be nice to get some closure on the last bits of OpenGL 4.2, which would mean that a number of older GPUs are "feature complete".

[xxmitsu]

From: http://lists.freedesktop.org/archive...ry/104209.html

Are there any known applications that use this feature?

Supertuxkart will use it if you have a bunch of stuff which mesa doesn't have: https://github.com/supertuxkart/stk-...etry.cpp#L1165 The condition for this getting triggered, from what I can tell, is "isAZDOEnabled", which only is enabled if you have bindless textures (and multi draw obviously).

I'd be curious about the performance gain.

[W.Irrkopf]

Always good to see progress, but Gallium is starting to fall a way behind Intel. It'd be nice to get some closure on the last bits of OpenGL 4.2, which would mean that a number of older GPUs are "feature complete".

Well, he ist working on more "checklist stuff" as well: https://github.com/imirkin/mesa/tree/atomic3 has the enabling code for GL_ARB_shader_atomic_counters (GL 4.2) and GL_ARB_shader_storage_buffer_object (GL 4.3).

[hakzsam]

And we are also working on GL_ARB_compute_shader and GL_ARB_shader_image_load_store. OpenGL 4.2 for NVC0 is on the way!

[darkbasic]

And we are also working on GL_ARB_compute_shader and GL_ARB_shader_image_load_store. OpenGL 4.2 for NVC0 is on the way!

I would really like to have GL_ARB_compute_shader

[hakzsam]

I'm working on it, and I did some good progress this week.

[spike411]

Good work. And happy hacking!

[geearf]

I'm working on it, and I did some good progress this week.

That's wonderful news!

[Azpegath]

Getting proper muli_draw_indirect can really lead to excellent performance improvements, draw call overhead is very costly as has been the big thing the last years (hence AZDO and Vulkan, among other things).