Adds lighting;

src/light.frag

@@ -0,0 +1,8 @@
+#version 450
+
+layout(location=0) in vec3 v_color;
+layout(location=0) out vec4 f_color;
+
+void main() {
+    f_color = vec4(v_color, 1.0);
+}

src/light.vert

@@ -0,0 +1,27 @@
+#version 450
+
+layout(location=0) in vec3 a_position;
+
+layout(location=0) out vec3 v_color;
+
+layout(set=0, binding=0) 
+uniform Uniforms {
+    vec3 u_view_position; // unused
+    mat4 u_view_proj;
+};
+
+layout(set=1, binding=0)
+uniform Light {
+    vec3 u_position;
+    vec3 u_color;
+};
+
+// Let's keep our light smaller than our other objects
+float scale = 0.25;
+
+void main() {
+    vec3 v_position = a_position * scale + u_position;
+    gl_Position = u_view_proj * vec4(v_position, 1);
+
+    v_color = u_color;
+}