1.1 --- a/sdr/bezier.p.glsl	Sun Dec 02 17:16:32 2012 +0200
     1.2 +++ b/sdr/bezier.p.glsl	Mon Dec 03 07:30:39 2012 +0200
     1.3 @@ -1,7 +1,11 @@
     1.4  #version 410 compatibility
     1.5  
     1.6 +uniform int tess_level;
     1.7 +
     1.8  in vec3 normal;
     1.9  in vec3 vpos;
    1.10 +in vec2 uv;
    1.11 +
    1.12  
    1.13  void main()
    1.14  {
    1.15 @@ -15,12 +19,21 @@
    1.16  	float ndotl = max(dot(n, l), 0.0);
    1.17  	float ndoth = max(dot(n, h), 0.0);
    1.18  
    1.19 +	vec3 ka = gl_FrontMaterial.ambient.xyz;
    1.20  	vec3 kd = gl_FrontMaterial.diffuse.xyz;
    1.21  	vec3 ks = gl_FrontMaterial.specular.xyz;
    1.22  	float shin = gl_FrontMaterial.shininess;
    1.23  
    1.24  	vec3 diffuse = kd * ndotl * gl_LightSource[0].diffuse.xyz;
    1.25  	vec3 specular = ks * pow(ndoth, shin) * gl_LightSource[0].specular.xyz;
    1.26 +	vec3 ambient = ka * gl_LightModel.ambient.xyz;
    1.27 +	vec3 color = ambient + diffuse + specular;
    1.28  
    1.29 -	gl_FragColor = vec4(diffuse + specular, gl_FrontMaterial.diffuse.w);
    1.30 +	vec2 tess_uv = mod(uv * float(tess_level), 1.0);
    1.31 +
    1.32 +#define STEPSZ	0.1
    1.33 +	float wire = smoothstep(0.0, STEPSZ, tess_uv.x) * smoothstep(1.0, 1.0 - STEPSZ, tess_uv.x);
    1.34 +	wire *= smoothstep(0.0, STEPSZ, tess_uv.y) * smoothstep(1.0, 1.0 - STEPSZ, tess_uv.y);
    1.35 +
    1.36 +	gl_FragColor = vec4(mix(vec3(0.0, 0.0, 0.0), color, wire), gl_FrontMaterial.diffuse.w);
    1.37  }