Fix clipboard always rendered at full brightness (#2845)

Author: MCTian-mi

src/main/java/gregtech/client/renderer/texture/custom/ClipboardRenderer.java

@@ -12,6 +12,7 @@
 import net.minecraft.client.renderer.texture.TextureMap;
 import net.minecraft.util.EnumFacing;
 import net.minecraft.util.ResourceLocation;
+import net.minecraft.world.World;
 import net.minecraftforge.fml.common.FMLCommonHandler;
 import net.minecraftforge.fml.relauncher.Side;
 import net.minecraftforge.fml.relauncher.SideOnly;
@@ -74,7 +75,8 @@ public static void renderBoard(CCRenderState renderState, Matrix4 translation, I
         translation.translate(0.5, 0.5, 0.5);
         translation.rotate(Math.toRadians(90.0 * rotations.indexOf(rotation)), Rotation.axes[1]);
         translation.translate(-0.5, -0.5, -0.5);
-
+        World world = clipboard.getWorld();
+        if (world != null) renderState.setBrightness(world, clipboard.getPos());
         // Render Clipboard
         for (EnumFacing renderSide : EnumFacing.VALUES) {
             boxTextureMap.forEach((box, sprite) -> Textures.renderFace(renderState, translation, pipeline, renderSide,
@@ -89,7 +91,17 @@ public static void renderGUI(double x, double y, double z, EnumFacing rotation,
         GlStateManager.pushMatrix();
         float lastBrightnessX = OpenGlHelper.lastBrightnessX;
         float lastBrightnessY = OpenGlHelper.lastBrightnessY;
-        OpenGlHelper.setLightmapTextureCoords(OpenGlHelper.lightmapTexUnit, 240.0F, 240.0F);
+
+        float lx = 240, ly = 240;
+        World world = clipboard.getWorld();
+        if (world != null) {
+            int light = world.getCombinedLight(clipboard.getPos(), 0);
+
+            lx = (float) light % 0x10000;
+            ly = (float) light / 0x10000;
+        }
+
+        OpenGlHelper.setLightmapTextureCoords(OpenGlHelper.lightmapTexUnit, lx, ly);
         RenderHelper.disableStandardItemLighting();
 
         // All of these are done in reverse order, by the way, if you're reviewing this :P