axmol/tests/cpp-tests/Content/MeshRendererTest/toon.frag

25 lines
800 B
GLSL

#ifdef GL_ES
varying mediump vec2 v_texture_coord;
#else
varying vec2 v_texture_coord;
#endif
uniform vec4 u_color;
uniform sampler2D u_sampler0;
varying vec3 v_normal;
void main(void)
{
vec3 light_direction = vec3(1,-1,-1);
light_direction = normalize(light_direction);
vec3 light_color = vec3(1,1,1);
vec3 normal = normalize(v_normal);
float diffuse_factor = dot(normal,-light_direction);
vec4 diffuse_color = texture2D(u_sampler0,v_texture_coord);
if (diffuse_factor > 0.95) diffuse_factor=1.0;
else if (diffuse_factor > 0.75) diffuse_factor = 0.8;
else if (diffuse_factor > 0.50) diffuse_factor = 0.6;
else diffuse_factor = 0.4;
light_color = light_color * diffuse_factor;
gl_FragColor = vec4(light_color,1.0) * diffuse_color * u_color;
}