first commit

shaders/default.frag

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+#version 460 core
+in vec2 v_texcoord;
+in vec3 v_normal;
+in vec3 v_position;
+
+layout (binding = 1, std140) uniform Light {
+    uniform vec4 light_color;
+    uniform vec3 light_pos;
+    uniform vec3 camera_pos;
+};
+
+uniform sampler2D u_texture;
+
+out vec4 f_color;
+
+vec4 pointLight() {
+    vec3 light_vector = light_pos - v_position;
+    float dist = length(light_vector);
+    float a = 1.0;
+	float b = 0.7;
+    float intensity = 1 / (a * dist * dist + b * dist + 1.0f);
+
+    // ambient lighting
+    float ambient = 0.2;
+
+    // diffuse lighting
+    float diffuse_light = 0.7;
+    vec3 normal = normalize(v_normal);
+    vec3 light_direction = normalize(light_vector);
+    float diffuse = diffuse_light * max(dot(normal, light_direction), 0);
+
+    // specular lighting
+    float specular_light = 0.7;
+    vec3 view_direction = normalize(camera_pos - v_position);
+    vec3 reflection_direction = reflect(-light_direction, normal);
+    vec3 halfway_vec = normalize(view_direction + light_direction);
+    float specular = specular_light * pow(max(dot(normal, halfway_vec), 0), 100);
+
+    return (texture(u_texture, v_texcoord) * (diffuse * intensity + ambient) + specular * intensity) * light_color;
+}
+
+void main() {
+    f_color = pointLight();
+}