varying vec2 center_vec; void vert () { center_vec = TexCoord - center; //Multiply by x/y ratio so we see a sphere on the screen //instead of an ellipse. center_vec.y *= Texture0Info.y / Texture0Info.x; } 1.0) { texc = TexCoord; } else { float distortion = 1.0 - dist_to_center * dist_to_center; texc = TexCoord - (TexCoord - center) * distortion * height; } if ( texc.x < 0.0 || texc.x > 1.0 || texc.y < 0.0 || texc.y > 1.0 ) gl_FragColor = vec4(0.0); else colorOutput(texture2D_0(texc)); } ]]>