| precision highp float; | |
| varying vec3 v_normal; | |
| uniform vec4 u_ambient; | |
| varying vec2 v_texcoord0; | |
| uniform sampler2D u_diffuse; | |
| void main(void) { | |
| vec3 normal = normalize(v_normal); | |
| vec4 color = vec4(0., 0., 0., 0.); | |
| vec4 diffuse = vec4(0., 0., 0., 1.); | |
| vec4 ambient; | |
| ambient = u_ambient; | |
| diffuse = texture2D(u_diffuse, v_texcoord0); | |
| diffuse.xyz *= max(dot(normal,vec3(0.,0.,1.)), 0.); | |
| color.xyz += diffuse.xyz; | |
| color = vec4(color.rgb * diffuse.a, diffuse.a); | |
| gl_FragColor = color; | |
| } |