From 8c2386442a60bac743a6e80d5ba024efe92958c5 Mon Sep 17 00:00:00 2001
From: David Thompson <dthompson2@worcester.edu>
Date: Thu, 23 Sep 2021 19:11:29 -0400
Subject: graphics: light: Add intensity field.

---
 data/shaders/pbr-frag.glsl | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

(limited to 'data/shaders/pbr-frag.glsl')

diff --git a/data/shaders/pbr-frag.glsl b/data/shaders/pbr-frag.glsl
index fff725a..e6bcdc5 100644
--- a/data/shaders/pbr-frag.glsl
+++ b/data/shaders/pbr-frag.glsl
@@ -20,6 +20,7 @@ struct Light {
   vec3 position;
   vec3 direction;
   vec4 color;
+  float intensity;
   float cutOff;
 };
 
@@ -210,14 +211,14 @@ vec3 lightDirection(Light light) {
 vec3 lightAttenuate(Light light) {
   float distance = length(light.position - fragWorldPos);
   float attenuation = 1.0 / (distance * distance);
-  return light.color.rgb * attenuation;
+  return light.color.rgb * light.intensity * attenuation;
 }
 
 vec3 lightRadiance(Light light, vec3 direction) {
   if(light.type == 0) { // point light
     return lightAttenuate(light);
   } else if(light.type == 1) { // directional light
-    return light.color.rgb;
+    return light.color.rgb * light.intensity;
   } else if(light.type == 2) { // spot light
     float theta = dot(direction, normalize(-light.direction));
     // Spot lights only shine light in a specific conical area.
-- 
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