1 files changed, 4 insertions, 2 deletions
diff --git a/indra/newview/app_settings/shaders/class1/effects/glowExtractF.glsl b/indra/newview/app_settings/shaders/class1/effects/glowExtractF.glsl
index a34e76d25a..b2d3a135ba 100644
--- a/indra/newview/app_settings/shaders/class1/effects/glowExtractF.glsl
+++ b/indra/newview/app_settings/shaders/class1/effects/glowExtractF.glsl
@@ -23,10 +23,12 @@
  * $/LicenseInfo$
  */
  
-
-
 #extension GL_ARB_texture_rectangle : enable
 
+#ifndef gl_FragColor
+out vec4 gl_FragColor;
+#endif
+
 uniform sampler2DRect diffuseMap;
 uniform float minLuminance;
 uniform float maxExtractAlpha;