added normal map

assets/shaders/default.frag

@@ -5,6 +5,8 @@ struct Material {
   vec4 baseColor;
   uint albedoTexture;
 
+  uint normalTexture;
+
   float metallicFactor;
   float roughnessFactor;
   uint metallicRoughnessTexture;

assets/shaders/default.vert

@@ -5,6 +5,8 @@ struct Material {
   vec4 baseColor;
   uint albedoTexture;
 
+  uint normalTexture;
+
   float metallicFactor;
   float roughnessFactor;
   uint metallicRoughnessTexture;
@@ -74,6 +76,12 @@ void main()
 
   color = texture(texSampler[material.albedoTexture], vertex.uv[0]).xyz;
 
+  if(material.normalTexture != 0) {
+    normal = texture(texSampler[material.normalTexture], vertex.uv[0]).xyz;
+  }
+  else {
     normal = vertex.normal.xyz;
+  }
+
   gl_Position = Camera.projection * Camera.view * PushConstants.render_matrix * vec4(vertex.position.xyz, 1.0);
 }