Patched bounding box renderer to work again- in immediate mode renderer, more work on lighting rework for modern renderer

shaders/fragment/lighting.glsl

@@ -0,0 +1,49 @@
+#version 330 core
+out vec4 FragColor;
+
+@include "light_struct"
+const int DIRECTIONAL = 0;
+const int POINT = 1;
+const int SPOT = 2;
+
+in vec2 outTexCoords;
+flat in Light outLight[1];
+
+uniform sampler2D diffuse, position, texcoord, normal, depth;
+
+vec4 directionalLight(Light light) {
+  return vec4(0,0,0,1);
+}
+
+vec4 pointLight(Light light) {
+  return vec4(0.25, 0.25, 0.25, 1);
+}
+
+vec4 spotLight(Light light) {
+  return vec4(0.5, 0.5, 0.5, 1);
+}
+
+vec4 calculateLighting(Light light) {
+  vec4 result = vec4(0,0,0,0);
+
+  switch(light.type) {
+    case DIRECTIONAL: {
+      result = directionalLight(light);
+    }
+    case POINT: {
+      result = pointLight(light);
+    }
+    case SPOT: {
+      result = spotLight(light);
+    }
+    default: {
+      result = vec4(1,1,1,1);
+    }
+  }
+
+  return result;
+}
+
+void main() {
+  FragColor = texture(diffuse, outTexCoords) * calculateLighting(outLight[0]);
+}