ACSkyRenderer.java

/*******************************************************************************
 * AbyssalCraft
 * Copyright (c) 2012 - 2017 Shinoow.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Lesser Public License v3
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/lgpl-3.0.txt
 *
 * Contributors:
 *     Shinoow -  implementation
 ******************************************************************************/
package com.shinoow.abyssalcraft.client.render.sky;

import net.minecraft.client.Minecraft;
import net.minecraft.client.multiplayer.WorldClient;
import net.minecraft.client.renderer.GlStateManager;
import net.minecraft.client.renderer.RenderHelper;
import net.minecraft.client.renderer.Tessellator;
import net.minecraft.client.renderer.VertexBuffer;
import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
import net.minecraft.util.ResourceLocation;
import net.minecraftforge.client.IRenderHandler;

public class ACSkyRenderer extends IRenderHandler {

	private ResourceLocation texture;
	private int r, g, b;

	public ACSkyRenderer(ResourceLocation texture, int r, int g, int b){
		this.texture = texture;
		this.r = r;
		this.g = g;
		this.b = b;
	}

	@Override
	public void render(float partialTicks, WorldClient world, Minecraft mc) {

		GlStateManager.disableFog();
		GlStateManager.disableAlpha();
		GlStateManager.enableBlend();
		GlStateManager.tryBlendFuncSeparate(GlStateManager.SourceFactor.SRC_ALPHA, GlStateManager.DestFactor.ONE_MINUS_SRC_ALPHA, GlStateManager.SourceFactor.ONE, GlStateManager.DestFactor.ZERO);
		RenderHelper.disableStandardItemLighting();
		GlStateManager.depthMask(false);
		mc.renderEngine.bindTexture(texture);
		Tessellator tessellator = Tessellator.getInstance();
		VertexBuffer vertexbuffer = tessellator.getBuffer();

		for (int i = 0; i < 6; ++i)
		{
			GlStateManager.pushMatrix();

			if (i == 1)
				GlStateManager.rotate(90.0F, 1.0F, 0.0F, 0.0F);

			if (i == 2)
				GlStateManager.rotate(-90.0F, 1.0F, 0.0F, 0.0F);

			if (i == 3)
				GlStateManager.rotate(180.0F, 1.0F, 0.0F, 0.0F);

			if (i == 4)
				GlStateManager.rotate(90.0F, 0.0F, 0.0F, 1.0F);

			if (i == 5)
				GlStateManager.rotate(-90.0F, 0.0F, 0.0F, 1.0F);

			vertexbuffer.begin(7, DefaultVertexFormats.POSITION_TEX_COLOR);
			vertexbuffer.pos(-100.0D, -100.0D, -100.0D).tex(0.0D, 0.0D).color(r, g, b, 255).endVertex();
			vertexbuffer.pos(-100.0D, -100.0D, 100.0D).tex(0.0D, 16.0D).color(r, g, b, 255).endVertex();
			vertexbuffer.pos(100.0D, -100.0D, 100.0D).tex(16.0D, 16.0D).color(r, g, b, 255).endVertex();
			vertexbuffer.pos(100.0D, -100.0D, -100.0D).tex(16.0D, 0.0D).color(r, g, b, 255).endVertex();
			tessellator.draw();
			GlStateManager.popMatrix();
		}

		GlStateManager.depthMask(true);
		GlStateManager.enableTexture2D();
		GlStateManager.enableAlpha();
	}

}