Move lighting calculations to world space

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

diff --git a/builtin_data/_sky_backdrop.glsl b/builtin_data/_sky_backdrop.glsl
index 0aac6c8080553da91a246b18f7dd6d010be11e5a..8d9f4ab91915f435518a4459196ad6665a0e2caf 100644 (file)
--- a/builtin_data/_sky_backdrop.glsl
+++ b/builtin_data/_sky_backdrop.glsl
@@ -7,7 +7,7 @@ uniform sampler2D distant;
 void main()
 {
        gl_Position = vec4(vertex.xy, 1.0, 1.0);
-       mat4 inv_projection = inverse(projection_matrix);
+       mat4 inv_projection = inverse(clip_eye_matrix);
        out vec4 view_dir = inv_projection*vec4(vertex.xy, -1.0, 1.0);
        view_dir /= view_dir.w;
        view_dir = inverse(eye_world_matrix)*vec4(view_dir.xyz, 0.0);