ENABLE_SEAMS_USING_INSTANCED_MODELS -> WIP: Render models using glDrawElementsInstanced

resources/shaders/gouraud_light_instanced.fs

@@ -0,0 +1,12 @@
+#version 110
+
+uniform vec4 uniform_color;
+uniform float emission_factor;
+
+// x = tainted, y = specular;
+varying vec2 intensity;
+
+void main()
+{
+    gl_FragColor = vec4(vec3(intensity.y) + uniform_color.rgb * (intensity.x + emission_factor), uniform_color.a);
+}