GTK4 Continues Improving Graphics Offload & DMA-BUF Integration

[phoronix]

Phoronix: GTK4 Continues Improving Graphics Offload & DMA-BUF Integration

There is a new post on the GTK blog outlining some of the recent enhancements to this open-source toolkit for benefiting the graphics/GPU offloading capabilities...

https://www.phoronix.com/news/GTK4-Better-Offload

[uid313]

Is GtkGLArea only used OpenGL?

What if you want to use Vulkan, Metal or DirectX 12?

[spicfoo]

Is GtkGLArea only used OpenGL?

What if you want to use Vulkan, Metal or DirectX 12?

Next time, try searching online first. Tldr: Don't use an OpenGL specific widget if you don't want OpenGL. If you want Vulcan, you use https://docs.gtk.org/gdk4/class.VulkanContext.html

[You-]

Next time, try searching online first. Tldr: Don't use an OpenGL specific widget if you don't want OpenGL. If you want Vulcan, you use https://docs.gtk.org/gdk4/class.VulkanContext.html

The funny thing here is that you are (sort of?) wrong now with the offload work being discussed in this topic.

The offload widget allows you to offload the GLArea, so even if the rest of the application is rendered in Vulkan or Cairo, or DIrectX or whatever comes in the future, the point of the offload is to allow this specific widget to be GL.

EDIT - There is a merge request today marking VulkanContext as deprecated since the release of GTK 4.14.

[uid313]

Next time, try searching online first. Tldr: Don't use an OpenGL specific widget if you don't want OpenGL. If you want Vulcan, you use https://docs.gtk.org/gdk4/class.VulkanContext.html

But VulkanContext is named VulkanContext not VulkanArea and VulkanContext is under the Gdk namespace, while GLArea is under the Gtk namespace.

[spicfoo]

But VulkanContext is named VulkanContext not VulkanArea and VulkanContext is under the Gdk namespace, while GLArea is under the Gtk namespace.

Use the doc to understand the widget hierarchy. I am sure you can browse through it and find out.

[You-]

Offload is a big part of the plan for switching the default renderer to Vulkan and still letting the GLArea widget to continue functioning.

[mxan]

Nice performance improvements, too bad GTK4 is useless for anything more complex than a mobile app.