1 files changed, 9 insertions, 4 deletions
diff --git a/indra/newview/app_settings/shaders/class1/environment/terrainF.glsl b/indra/newview/app_settings/shaders/class1/environment/terrainF.glsl
index c61d5a2a08..5d72390d2d 100644
--- a/indra/newview/app_settings/shaders/class1/environment/terrainF.glsl
+++ b/indra/newview/app_settings/shaders/class1/environment/terrainF.glsl
@@ -29,13 +29,18 @@ uniform sampler2D detail0;
 uniform sampler2D detail1;
 uniform sampler2D alphaRamp;
 
+VARYING vec2 vary_texcoord0;
+VARYING vec2 vary_texcoord1;
+VARYING vec2 vary_texcoord2;
+VARYING vec2 vary_texcoord3;
+
 void main() 
 {
-	float a = texture2D(alphaRamp, gl_TexCoord[1].xy).a;
-	vec3 color = mix(texture2D(detail1, gl_TexCoord[2].xy).rgb,
-					 texture2D(detail0, gl_TexCoord[0].xy).rgb,
+	float a = texture2D(alphaRamp, vary_texcoord1.xy).a;
+	vec3 color = mix(texture2D(detail1, vary_texcoord2.xy).rgb,
+					 texture2D(detail0, vary_texcoord0.xy).rgb,
 					 a);
 
 	gl_FragColor.rgb = color;
-	gl_FragColor.a = texture2D(alphaRamp, gl_TexCoord[3].xy).a;
+	gl_FragColor.a = texture2D(alphaRamp, vary_texcoord3.xy).a;
 }