[draw rectangle on gui]

Thank you for your advice, including the application examples!

I can use "bilt" as opposed to "fill".

Your way will certainly solve my problem.

 

[draw rectangle on gui]

I do apologize for any inconvenience caused. I had been unaware of rule in the forum. Thank you for pointing this out.

I don't care opacity. 

"fill" is the method in net/minecraft/client/gui/GuiGraphics.java   

I refer from Screen - Forge Documentation (minecraftforge.net)

I make the following code. I am able to display the text to appear in a similar method to the problematic method. I don't know what these methods need respectively.

package com.QbismX.RectMod.main;

import com.mojang.blaze3d.systems.RenderSystem;
import net.minecraft.client.Minecraft;
import net.minecraft.client.renderer.GameRenderer;
import net.minecraftforge.client.event.RegisterGuiOverlaysEvent;
import net.minecraftforge.client.gui.overlay.IGuiOverlay;
import net.minecraftforge.eventbus.api.SubscribeEvent;
import net.minecraftforge.fml.common.Mod;

@Mod(RectMod.MODID)
public class RectMod {

    public static final String MODID = "rectmod";

    public RectMod(){
    }

    @Mod.EventBusSubscriber(modid = MODID, bus = Mod.EventBusSubscriber.Bus.MOD)
    public static class ClientModEvents {

        @SubscribeEvent
        public static void registerGuiOverlays(RegisterGuiOverlaysEvent event) {
            event.registerAboveAll("bar", BAR);
        }

    }

    public static final IGuiOverlay BAR = ((gui, guiGraphics, partialTick, screenWidth, screenHeight) -> {

        RenderSystem.setShader(GameRenderer::getPositionColorShader);

        // Maybe this draw a rectangle on the screen.
        // First, second, third and fourth arguments may set a position.
        // Fifth argument may set color.
        guiGraphics.fill(100, 120, 140, 160, 0xFFFFFF);

        // This draw text on the screen. The method have no problem.
        // Third and fourth arguments set a position.
        // Fifth argument sets text color.
        // Sixth argument sets shadow.
        guiGraphics.drawString(Minecraft.getInstance().font, "test", 100, 140, 0xFFFFFF, true);
    });

}

 

Please allow me to share the files debug.log, launcher_log.txt and RectMod.java with you at this link.

https://gist.github.com/QbismX/fc43dcbcca419336d89d8670ef52a101

[draw rectangle on gui]

I want to add rectangle on screen. But I don't know how to draw rectangle. 

I make the following code.:

public static void IGuiOverlay BAR = ((gui, guiGraphics, partialTick, screenWidth, screenHeight) -> {

RenderSystem.setShader(GameRenderer::getPositionColorShader);

guiGraphics.fill(100,120,140,160,0xFFFFFF);

guiGraphics.drawString(Minecraft.getInstance().font, "test", 100, 140, 0xFFFFFF, true);

});

 

Then, String "test" is displayed on the screen. But a rectangle is not displayed.

Please give me your advice.