Put the PI constant in builtins

[libs/gl.git] / builtin_data / _sky_backdrop.glsl

diff --git a/builtin_data/_sky_backdrop.glsl b/builtin_data/_sky_backdrop.glsl
index 8d9f4ab91915f435518a4459196ad6665a0e2caf..420f0ed5ff1ce268a7a2a2480d0b87e558047a1b 100644 (file)
--- a/builtin_data/_sky_backdrop.glsl
+++ b/builtin_data/_sky_backdrop.glsl
@@ -18,5 +18,5 @@ void main()
 {
        vec3 nview = normalize(view_dir.xyz);
        float azimuth = atan(nview.y, nview.x);
-       frag_color = texture(distant, vec2(azimuth/(2*pi), nview.z*0.5+0.5))*light_color;
+       frag_color = texture(distant, vec2(azimuth/(2*PI), nview.z*0.5+0.5))*light_color;
 }