adds scene info for recursive rays

shaders/rt_quad.frag

@@ -20,6 +20,8 @@ layout(binding = 0) uniform UniformBufferObject {
 // 1 - location for the max iterations per light
 // 2 - diffuse raster samples (2*n + 1) * (2*n + 1) so as to always have at least the central fragment covered
 // 3 - diffuse raster size (float, needs to be decoded)
+// 4 - max recursive rays
+// 5 - diffuse rays per hit
 layout(binding = 2) buffer SceneInfoBuffer{
      uint infos[]; 
 } scene_info;