in vec3 position;
in vec3 normal;
-out vec4 color;
+flat out vec4 color; // Shaded color
uniform mat4 model;
uniform mat4 perspview;
+uniform vec3 col;
void main() {
mat4 m = perspview * model;
- vec3 dark = vec3(0.0, 0.0, 0.1);
- vec3 bright = vec3(0.0, 0.0, 0.9);
- vec3 u_light = vec3(-0.5, -0.7, -0.6);
+ vec3 dark = col * 0.1;
+ vec3 u_light = vec3( 0.5, -0.7, -0.6);
vec3 v_normal = transpose(inverse(mat3(model))) * normal;
- float brightness = max(dot(normalize(v_normal), normalize(u_light)), 0.0);
- color = vec4(mix(dark, bright, brightness), 1.0);
+
+ float distance = model[3][2];
+ float attenuation = 1. / (1. + distance * distance * 0.05);
+ float brightness = max(dot(normalize(v_normal), normalize(u_light)) * attenuation, 0.0);
+ color = vec4(mix(dark, col, brightness), 1.0);
+
gl_Position = m * vec4(position, 1.0);
}