nuclear@18: varying vec3 vdir, ldir, normal;
nuclear@18: varying vec4 shadow_tc;
nuclear@18: 
nuclear@18: void main()
nuclear@18: {
nuclear@18: 	gl_Position = ftransform();
nuclear@18: 
nuclear@18: 	vec3 vpos = (gl_ModelViewMatrix * gl_Vertex).xyz;
nuclear@18: 	normal = gl_NormalMatrix * gl_Normal;
nuclear@18: 	vdir = -vpos;
nuclear@18: 	ldir = gl_LightSource[0].position.xyz - vpos;
nuclear@18: 	gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0;
nuclear@18: 
nuclear@18: 	mat4 offmat = mat4(0.5, 0.0, 0.0, 0.0,
nuclear@18: 			0.0, 0.5, 0.0, 0.0,
nuclear@18: 			0.0, 0.0, 0.5, 0.0,
nuclear@18: 			0.5, 0.5, 0.5, 1.0);
nuclear@18: 	mat4 tex_matrix = offmat * gl_TextureMatrix[1];
nuclear@18: 
nuclear@18: 	shadow_tc = tex_matrix * gl_Vertex;
nuclear@18: 	shadow_tc = shadow_tc / shadow_tc.w;
nuclear@18: }