Adding ViroKit. Needs AWSCore :(

mobile/ios/ViroKit.framework/constant_q_fsh.glsl

@@ -0,0 +1,31 @@
+#version 300 es
+#include constant_functions_fsh
+
+uniform lowp vec4 material_diffuse_surface_color;
+uniform lowp float material_diffuse_intensity;
+uniform lowp float material_alpha;
+
+uniform samplerCube diffuse_texture;
+
+#pragma surface_modifier_uniforms
+
+in lowp mat3 v_tbn;
+in highp vec2 v_texcoord;
+in highp vec3 v_surface_position;
+
+out highp vec4 frag_color;
+
+void main() {
+    _surface.diffuse_color = material_diffuse_surface_color;
+    _surface.diffuse_texcoord = v_texcoord;
+    _surface.diffuse_intensity = material_diffuse_intensity;
+    _surface.alpha = material_alpha;
+    _surface.normal = v_tbn[2];
+    _surface.position = v_surface_position;
+
+#pragma surface_modifier_body
+
+    highp vec3 texcoord = vec3(_surface.position.x, _surface.position.y, -_surface.position.z);
+    frag_color = _surface.diffuse_color * texture(diffuse_texture, texcoord) *
+                 _surface.diffuse_intensity * vec4(1.0, 1.0, 1.0, _surface.alpha);
+}