[gtk/wip/master.win.egl: 900/900] demos: Fix glarea demo on OpenGL/ES

[Chun-wei Fan <fanchunwei src gnome org>]

commit 0507c83d858aafaabc8528d3c99d0aa37bf64a4d
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Fri Aug 3 15:54:48 2018 +0800

    demos: Fix glarea demo on OpenGL/ES
    
    Some implementations of the ES 1.00 shader (such as Google's ANGLE) do
    not like the 'f' suffix for floats, so just drop it, as it should be
    harmless to drop.

 demos/gtk-demo/glarea-gles.fs.glsl | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/demos/gtk-demo/glarea-gles.fs.glsl b/demos/gtk-demo/glarea-gles.fs.glsl
index 39f7143960..ac5e195031 100644
--- a/demos/gtk-demo/glarea-gles.fs.glsl
+++ b/demos/gtk-demo/glarea-gles.fs.glsl
@@ -1,7 +1,7 @@
 precision highp float;
 
 void main() {
-  float lerpVal = gl_FragCoord.y / 500.0f;
+  float lerpVal = gl_FragCoord.y / 500.0;
 
-  gl_FragColor = mix(vec4(1.0f, 0.85f, 0.35f, 1.0f), vec4(0.2f, 0.2f, 0.2f, 1.0f), lerpVal);
+  gl_FragColor = mix(vec4(1.0, 0.85, 0.35, 1.0), vec4(0.2, 0.2, 0.2, 1.0), lerpVal);
 }