1 #version 310 es 2 3 layout(location = 0) in vec3 in_pos; 4 layout(location = 1) in vec3 in_normal; 5 6 layout(std140, push_constant) uniform param_block { 7 vec3 light_pos; 8 vec3 light_color; 9 mat4 model; 10 mat4 view_projection; 11 } params; 12 13 layout(location = 0) out vec3 color; 14 15 void main() 16 { 17 vec3 world_light = vec3(params.model * vec4(params.light_pos, 1.0)); 18 vec3 world_pos = vec3(params.model * vec4(in_pos, 1.0)); 19 vec3 world_normal = mat3(params.model) * in_normal; 20 21 vec3 light_dir = world_light - world_pos; 22 float brightness = dot(light_dir, world_normal) / length(light_dir) / length(world_normal); 23 brightness = abs(brightness); 24 25 gl_Position = params.view_projection * vec4(world_pos, 1.0); 26 color = params.light_color * brightness; 27 } 28
