fix rect rendering before items

src/main/java/storagecraft/gui/GuiBase.java

@@ -79,8 +79,8 @@ public abstract class GuiBase extends GuiContainer {
 	}
 
 	protected void drawItem(int x, int y, ItemStack stack, boolean withOverlay) {
-		zLevel = 100.0F;
-		itemRender.zLevel = 100.0F;
+		zLevel = 100;
+		itemRender.zLevel = 100;
 
 		GL11.glPushAttrib(GL11.GL_ALL_ATTRIB_BITS);
 
@@ -98,8 +98,8 @@ public abstract class GuiBase extends GuiContainer {
 
 		GL11.glPopAttrib();
 
-		itemRender.zLevel = 0.0F;
-		zLevel = 0.0F;
+		itemRender.zLevel = 0;
+		zLevel = 0;
 	}
 
 	protected void drawString(int x, int y, String message) {

src/main/java/storagecraft/gui/GuiGrid.java

@@ -98,8 +98,9 @@ public class GuiGrid extends GuiMachine {
 
 				int color = grid.isConnected() ? -2130706433 : 0xFF5B5B5B;
 
-				// @TODO: make it so it renders over the item
+				zLevel = 190;
 				drawGradientRect(x, y, x + 16, y + 16, color, color);
+				zLevel = 0;
 			}
 
 			slot++;