From f88da6fb6d50568d8d1889cca3f9ed32c4451a06 Mon Sep 17 00:00:00 2001
From: David Thompson <dthompson2@worcester.edu>
Date: Wed, 12 May 2021 20:49:48 -0400
Subject: graphics: model: Add support for dynamic lights in PBR models.

---
 data/shaders/pbr-vert.glsl | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

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

diff --git a/data/shaders/pbr-vert.glsl b/data/shaders/pbr-vert.glsl
index 530c564..bf43e81 100644
--- a/data/shaders/pbr-vert.glsl
+++ b/data/shaders/pbr-vert.glsl
@@ -21,14 +21,12 @@ attribute vec4 color0;
 
 #ifdef GLSL120
 varying vec3 fragWorldPos;
-varying vec3 fragCamPos;
 varying vec3 fragNormal;
 varying vec2 fragTexcoord0;
 varying vec2 fragTexcoord1;
 varying vec4 fragColor0;
 #else
 out vec3 fragWorldPos;
-out vec3 fragCamPos;
 out vec3 fragNormal;
 out vec2 fragTexcoord0;
 out vec2 fragTexcoord1;
@@ -40,11 +38,10 @@ uniform mat4 view;
 uniform mat4 projection;
 
 void main(void) {
-  fragWorldPos = (model * vec4(position.xyz, 1.0)).xyz;
-  fragCamPos = (view * vec4(0.0, 0.0, 0.0, 1.0)).xyz;
-  fragNormal = normal;
+  fragWorldPos = vec3(model * vec4(position, 1.0));
+  fragNormal = mat3(model) * normal;
   fragTexcoord0 = texcoord0;
   fragTexcoord1 = texcoord1;
   fragColor0 = color0;
-  gl_Position = projection * view * model * vec4(position.xyz, 1.0);
+  gl_Position = projection * view * vec4(fragWorldPos, 1.0);
 }
-- 
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