There were still actually some rendering errors

Author: GeorgeRNG

src/main/java/io/github/techstreet/dfscript/screen/widget/CItem.java

@@ -7,9 +7,7 @@
 import net.minecraft.client.util.math.MatrixStack;
 import net.minecraft.item.ItemStack;
 import net.minecraft.sound.SoundEvents;
-import org.joml.Matrix4fc;
 import org.lwjgl.opengl.GL11;
-import org.joml.Vector3f;
 
 import java.awt.*;
 import java.util.Optional;
@@ -45,8 +43,7 @@ public void renderOverlay(MatrixStack stack, int mouseX, int mouseY, float tickD
             stack.translate(mouseX, mouseY, 0);
             stack.scale(0.5f, 0.5f, 1f);
             GL11.glDisable(GL11.GL_DEPTH_TEST);
-            stack.peek().getPositionMatrix().add((Matrix4fc) new Vector3f(0, 0, 600));
-            // TODO: check this is working
+//            stack.peek().getPositionMatrix().add((Matrix4fc) new Vector3f(0, 0, 600));
             DFScript.MC.currentScreen.renderTooltip(stack, item.getTooltip(
                 DFScript.MC.player, Default.BASIC
             ), Optional.empty(), 0, 0);

src/main/java/io/github/techstreet/dfscript/screen/widget/CTextField.java

@@ -8,7 +8,6 @@
 import net.minecraft.client.gui.DrawableHelper;
 import net.minecraft.client.util.math.MatrixStack;
 import org.joml.Vector4f;
-import org.joml.Vector4fc;
 
 public class CTextField implements CWidget {
 
@@ -55,10 +54,10 @@ public void render(MatrixStack stack, int mouseX, int mouseY, float tickDelta) {
         DrawableHelper.fill(stack, 1, 1, width - 1, height - 1, 0xFF000000);
 
         float xpos = stack.peek().getPositionMatrix().m30() + x;
-        float ypos = stack.peek().getPositionMatrix().m31() - y;
+        float ypos = stack.peek().getPositionMatrix().m31();
 
-        Vector4f begin = new Vector4f(xpos, ypos, 1, 1);
-        Vector4f end = new Vector4f(xpos + (width * 2), ypos + (height * 2), 1, 1);
+        Vector4f begin = new Vector4f(xpos - 2, ypos + 2, 1, 1);
+        Vector4f end = new Vector4f((xpos + (width * 2)) - 7, (ypos + (height * 2)), 1, 1);
 
         int guiScale = (int) DFScript.MC.getWindow().getScaleFactor();
         RenderUtil.pushScissor(

src/main/java/io/github/techstreet/dfscript/util/RenderUtil.java

@@ -2,14 +2,8 @@
 
 import com.mojang.blaze3d.systems.RenderSystem;
 import io.github.techstreet.dfscript.DFScript;
-import java.util.ArrayList;
-import java.util.List;
 import net.minecraft.client.MinecraftClient;
-import net.minecraft.client.render.BufferBuilder;
-import net.minecraft.client.render.GameRenderer;
-import net.minecraft.client.render.Tessellator;
-import net.minecraft.client.render.VertexFormat;
-import net.minecraft.client.render.VertexFormats;
+import net.minecraft.client.render.*;
 import net.minecraft.client.render.item.ItemRenderer;
 import net.minecraft.client.toast.SystemToast;
 import net.minecraft.client.util.math.MatrixStack;
@@ -18,9 +12,11 @@
 import net.minecraft.text.Text;
 import net.minecraft.util.Identifier;
 import org.joml.Vector4f;
-import org.joml.Vector4fc;
 import org.lwjgl.opengl.GL11;
 
+import java.util.ArrayList;
+import java.util.List;
+
 public class RenderUtil {
 
     private static final List<Scissor> scissorStack = new ArrayList<>();
@@ -163,8 +159,7 @@ public static void popScissor() {
     public static void renderGuiItem(MatrixStack stack, ItemStack item) {
         stack.push();
         ItemRenderer renderer = DFScript.MC.getItemRenderer();
-        Vector4f pos = new Vector4f(0, 0, 0, 1);
-        pos.add((Vector4fc) stack.peek().getPositionMatrix());
+        Vector4f pos = new Vector4f(stack.peek().getPositionMatrix().m30(), stack.peek().getPositionMatrix().m31(), 0, 1);
         renderer.renderGuiItemIcon(item, (int) pos.x(), (int) pos.y());
         stack.pop();
     }