tesselation as a function of distance

[ld42_outofspace] / sdr / field.v.glsl

diff --git a/sdr/field.v.glsl b/sdr/field.v.glsl
index cecfabb..dbbbdfb 100644 (file)
--- a/sdr/field.v.glsl
+++ b/sdr/field.v.glsl
@@ -1,7 +1,11 @@
 #version 410 compatibility
 
+out float dist;
+
 void main()
 {
+       dist = -(gl_ModelViewMatrix * gl_Vertex).z;
+
        gl_Position = gl_Vertex;
        gl_TexCoord[0] = gl_MultiTexCoord0;
 }