import obj shader changes into obj_tex

assets/fs/shaders/obj_tex.f.glsl

@@ -17,7 +17,7 @@ void main(void)
     color = vec4(0.2, 0.2, 0.2, 1.0) * ambient;  /* ambient light */
     n = normalize(normal_i);
 
-    NdotL = max(dot(n, -lightDir), 0.0);
+    NdotL = dot(n, -lightDir);
 
     if (NdotL > 0.0)
     {

assets/fs/shaders/obj_tex.v.glsl

@@ -1,4 +1,8 @@
 
+uniform float scale;
+uniform mat4 projection;
+uniform mat4 modelview;
+
 attribute vec3 pos;
 attribute vec3 normal;
 attribute vec2 tex_coord;
@@ -9,8 +13,8 @@ varying vec2 tex_coord_i;
 
 void main(void)
 {
-    gl_Position = gl_ModelViewProjectionMatrix * vec4(pos, 1);
+    gl_Position = projection * modelview * vec4(scale * pos, 1);
     pos_i = gl_Position.xyz;
     tex_coord_i = tex_coord;
-    normal_i = gl_NormalMatrix * normal;
+    normal_i = modelview * vec4(normal, 0);
 }