[PATCH] gl-renderer: Create a high priority context

[Emil Velikov]

Hi Chris,

On 1 March 2018 at 08:28, Chris Wilson <chris at chris-wilson.co.uk> wrote:
> EGL_IMG_context_priority allows the client to request that their
> rendering be considered high priority. For ourselves, this is important
> as we are interactive and any delay in our rendering causes input-output

> +       if (gr->has_context_priority) {
> +               EGLint value = EGL_CONTEXT_PRIORITY_MEDIUM_IMG;
> +
> +               eglQueryContext(gr->egl_display, gr->egl_context,
> +                               EGL_CONTEXT_PRIORITY_LEVEL_IMG, &value);
> +
> +               if (value != EGL_CONTEXT_PRIORITY_HIGH_IMG) {
> +                       weston_log("Failed to obtain a high priority context.\n");
> +                       /* Not an error, continue on as normal */
> +               }
While this (and EGL spec) says "not an error" the i965 driver will
error out as the ioctl fails.
Say, for some reason the kernel module/HW cannot do a high-priority one ATM.

Should that be changed/fixed?

-Emil