[gtk: 2/2] Merge branch 'shadertoy-demo' into 'master'

[Matthias Clasen <matthiasc src gnome org>]

commit 3921476504a0443658df9a8e3af8de682e388aba
Merge: 859df747ac 0092a08dfc
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Sep 8 23:47:54 2020 +0000

    Merge branch 'shadertoy-demo' into 'master'
    
    gtk-demo: Add shadertoy demo
    
    See merge request GNOME/gtk!2540

 demos/gtk-demo/alienplanet.glsl   | 345 +++++++++++++++++++++++++
 demos/gtk-demo/cogs.glsl          | 224 ++++++++++++++++
 demos/gtk-demo/demo.gresource.xml |  10 +
 demos/gtk-demo/glowingstars.glsl  | 174 +++++++++++++
 demos/gtk-demo/gtkshadertoy.c     | 524 ++++++++++++++++++++++++++++++++++++++
 demos/gtk-demo/gtkshadertoy.h     |  34 +++
 demos/gtk-demo/mandelbrot.glsl    |  95 +++++++
 demos/gtk-demo/meson.build        |   2 +
 demos/gtk-demo/neon.glsl          | 220 ++++++++++++++++
 demos/gtk-demo/shadertoy.c        | 191 ++++++++++++++
 10 files changed, 1819 insertions(+)
---