package net.vulkanmod.gl;

import it.unimi.dsi.fastutil.ints.Int2ReferenceOpenHashMap;
import net.vulkanmod.vulkan.shader.Pipeline;

public class VkGlProgram {
   private static int ID_COUNTER = 1;
   private static final Int2ReferenceOpenHashMap<VkGlProgram> map = new Int2ReferenceOpenHashMap();
   private static int boundProgramId = 0;
   private static VkGlProgram boundProgram;
   int id;
   Pipeline pipeline;

   public static VkGlProgram getBoundProgram() {
      return boundProgram;
   }

   public static VkGlProgram getProgram(int id) {
      return (VkGlProgram)map.get(id);
   }

   public static int genProgramId() {
      int id = ID_COUNTER;
      map.put(id, new VkGlProgram(id));
      ++ID_COUNTER;
      return id;
   }

   public static void glUseProgram(int id) {
      boundProgramId = id;
      boundProgram = (VkGlProgram)map.get(id);
      if (id > 0) {
         if (boundProgram == null) {
            throw new NullPointerException("bound texture is null");
         }
      }
   }

   VkGlProgram(int i) {
      this.id = i;
   }

   public void bindPipeline(Pipeline pipeline) {
      this.pipeline = pipeline;
   }

   public Pipeline getPipeline() {
      return this.pipeline;
   }
}