Collabora's Erik Faye-Lund Outlines The New "Zink" OpenGL-on-Vulkan Gallium3D Effort

[phoronix]

Phoronix: Collabora's Erik Faye-Lund Outlines The New "Zink" OpenGL-on-Vulkan Gallium3D Effort

Not to be confused with the also new Zinc crypto code working its way to the mainline kernel as part of WireGuard, Zink is a new effort led by a developer at Collabora for implementing OpenGL on top of Vulkan drivers via Gallium3D...

http://www.phoronix.com/scan.php?page=news_item&px=Zink-Collabora-GL-VLK-Details

[shmerl]

Transform feedback should be available in Vulkan in a few weeks.

[dh04000]

Is this Linux only or cross platform?

[timofonic]

Transform feedback should be available in Vulkan in a few weeks.

What's that? What do you mean? Would you like to explain what you mean? Thanks in advance.

[Michael]

What's that? What do you mean? Would you like to explain what you mean? Thanks in advance.

https://www.phoronix.com/scan.php?page=news_item&px=Vulkan-EXT-Transform-Feedback

[shmerl]

What's that? What do you mean? Would you like to explain what you mean? Thanks in advance.

See here (comments by @pdaniell-nv from Khronos):

Some members of the Vulkan working group are developing a multi-vendor EXT extension for transform feedback with the primary goal of satisfying the needs of the DXVK, vkd3d and ANGLE translation layers. The Vulkan working group does not plan to promote this functionality as a KHR extension or as core functionality because it believes there are better, more forward-looking ways of processing and capturing vertex data with the GPU. The multi-vendor EXT extension should be available soon and is likely to be implemented on those platforms where DXVK, vkd3d and ANGLE translation is required.
...
We’re aiming for weeks not months. There has been a lot of progress since my last comment.

This should be useful for OpenGL to Vulkan translation projects.

[Kayden]

Hmm. OpenGL on Vulkan on MoltenVK on Metal? An awful lot of adapters, but...if Apple drops OpenGL support...might be an interesting option...and also kind of a terrible monster... :)

[pal666]

Is this Linux only or cross platform?

my guess is this is gallium+vulkan only

[JAYL]

Michael make sure to stayed tune for when I announce my new project, VKVK, where I implement a vulkan backend using vulkan.

[timofonic]

Hmm. OpenGL on Vulkan on MoltenVK on Metal? An awful lot of adapters, but...if Apple drops OpenGL support...might be an interesting option...and also kind of a terrible monster... :)

I wonder if translating directly to Vulkan instead using Gallium3D/NIR would improve performance too.

In this case, chained translation to/from different APIs such as Metal would be possible