nuclear@0: uniform sampler2D tex;
nuclear@0: 
nuclear@0: varying vec3 lpos, wpos, vpos, norm, ldir;
nuclear@0: 
nuclear@0: #define KD	gl_FrontMaterial.diffuse.rgb
nuclear@0: #define KS	gl_FrontMaterial.specular.rgb
nuclear@0: #define LTCOL	gl_LightSource[0].diffuse.rgb
nuclear@0: 
nuclear@0: void main()
nuclear@0: {
nuclear@0: 	vec4 texel = texture2D(tex, gl_TexCoord[0].st);
nuclear@0: 
nuclear@0: 	float dist = length(wpos.xz);
nuclear@0: 	float spot = 1.0 - smoothstep(4.0, 10.0, dist);
nuclear@0: 
nuclear@0: 	vec3 n = normalize(norm);
nuclear@0: 	vec3 v = -normalize(vpos);
nuclear@0: 	vec3 l = normalize(ldir);
nuclear@0: 	vec3 h = normalize(v + l);
nuclear@0: 
nuclear@0: 	float ndotl = max(dot(n, l), 0.0);
nuclear@0: 	float ndoth = max(dot(n, h), 0.0);
nuclear@0: 
nuclear@0: 	vec3 ambient = gl_LightModel.ambient.rgb * texel.rgb;
nuclear@0: 	vec3 diffuse = KD * LTCOL * ndotl * texel.rgb;
nuclear@0: 	vec3 specular = KS * LTCOL * pow(ndoth, gl_FrontMaterial.shininess);
nuclear@0: 
nuclear@0: 	gl_FragColor.rgb = (ambient + diffuse + specular) * spot;
nuclear@0: 	gl_FragColor.a = gl_FrontMaterial.diffuse.a * texel.a;
nuclear@0: }