Select stuff (hit detection is still off)

shaders/triangle.frag

@@ -1,6 +1,11 @@
 #version 450
 #extension GL_ARB_separate_shader_objects : enable
 
+layout(push_constant) uniform PushConstants {
+    mat4 model;
+    bool is_selected;
+} push;
+
 layout(binding = 0) uniform ObjectUniformData {
     mat4 view;
     mat4 projection;
@@ -42,4 +47,7 @@ void main() {
     vec3 specular_color = specular_value * specular_strength * light_color;
 
     out_color = vec4(ambient_color + diffuse_color + specular_color, 1.0) * texture(diffuse_tex, tex_coords);
+    if (push.is_selected) {
+        out_color = mix(out_color, vec4(0.5, 0.5, 0.0, 1.0), 0.1);
+    }
 }