[gtk+] gdkgl should use shader version 1.50

[Emmanuele Bassi <ebassi src gnome org>]

commit 50187ae86dfdb4c5815731da25dc9e57296d28c5
Author: Niels Nesse <nnesse sonic net>
Date:   Tue Feb 10 01:11:24 2015 -0800

    gdkgl should use shader version 1.50
    
    Using version 1.20 with a forward compatible 3.2 core context is incorrect
    since OpenGL 3.2 deprecates shader version 1.20 (See section E.2). The latest
    fglrx drivers will not compile these shaders.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=744203

 gdk/gdkgl.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/gdk/gdkgl.c b/gdk/gdkgl.c
index 4eff0a6..e497ccc 100644
--- a/gdk/gdkgl.c
+++ b/gdk/gdkgl.c
@@ -147,7 +147,7 @@ static void
 use_texture_2d_program (GdkGLContextPaintData *paint_data)
 {
   const char *vertex_shader_code =
-    "#version 120\n"
+    "#version 150\n"
     "uniform sampler2D map;"
     "attribute vec2 position;\n"
     "attribute vec2 uv;\n"
@@ -157,7 +157,7 @@ use_texture_2d_program (GdkGLContextPaintData *paint_data)
     "  vUv = uv;\n"
     "}\n";
   const char *fragment_shader_code =
-    "#version 120\n"
+    "#version 150\n"
     "varying vec2 vUv;\n"
     "uniform sampler2D map;\n"
     "void main() {\n"
@@ -178,7 +178,7 @@ static void
 use_texture_rect_program (GdkGLContextPaintData *paint_data)
 {
   const char *vertex_shader_code =
-    "#version 120\n"
+    "#version 150\n"
     "uniform sampler2DRect map;"
     "attribute vec2 position;\n"
     "attribute vec2 uv;\n"
@@ -188,7 +188,7 @@ use_texture_rect_program (GdkGLContextPaintData *paint_data)
     "  vUv = uv;\n"
     "}\n";
   const char *fragment_shader_code =
-    "#version 120\n"
+    "#version 150\n"
     "varying vec2 vUv;\n"
     "uniform sampler2DRect map;\n"
     "void main() {\n"