From 84cea781516545956fdbaf520f8466af2f4b2acb Mon Sep 17 00:00:00 2001
From: PeytonPlayz595 <106421860+PeytonPlayz595@users.noreply.github.com>
Date: Tue, 11 Jul 2023 20:05:13 -0400
Subject: [PATCH] Fixed Models (Again)

---
 .../com/mojang/minecraft/model/ModelPart.java | 12 ++--
 .../net/PeytonPlayz585/glemu/ModeBuffer.java  | 58 +++++++++++++++++++
 2 files changed, 66 insertions(+), 4 deletions(-)
 create mode 100644 src/teavm/java/net/PeytonPlayz585/glemu/ModeBuffer.java

diff --git a/src/teavm/java/com/mojang/minecraft/model/ModelPart.java b/src/teavm/java/com/mojang/minecraft/model/ModelPart.java
index 2f61d76..84c96d4 100644
--- a/src/teavm/java/com/mojang/minecraft/model/ModelPart.java
+++ b/src/teavm/java/com/mojang/minecraft/model/ModelPart.java
@@ -3,6 +3,9 @@ package com.mojang.minecraft.model;
 import com.mojang.minecraft.model.TexturedQuad;
 import com.mojang.minecraft.model.Vec3D;
 import com.mojang.minecraft.model.Vertex;
+
+import net.PeytonPlayz585.glemu.ModeBuffer;
+
 import org.lwjgl.opengl.GL11;
 
 public final class ModelPart {
@@ -128,7 +131,7 @@ public final class ModelPart {
    public void generateList(float var1) {
       this.list = GL11.glGenLists(1);
       GL11.glNewList(this.list, 4864);
-      GL11.glBegin(7);
+      GL11.glBeginQuery(7);
 
       for(int var2 = 0; var2 < this.quads.length; ++var2) {
          TexturedQuad var10000 = this.quads[var2];
@@ -140,12 +143,13 @@ public final class ModelPart {
 
          for(int var7 = 0; var7 < 4; ++var7) {
             Vertex var8;
-            GL11.glTexCoord2f((var8 = var4.vertices[var7]).u, var8.v);
-            GL11.glVertex3f(var8.vector.x * var3, var8.vector.y * var3, var8.vector.z * var3);
+            final ModeBuffer mb = new ModeBuffer(1024);
+            mb.glTexCoord2f((var8 = var4.vertices[var7]).u, var8.v);
+            mb.glVertex3f(var8.vector.x * var3, var8.vector.y * var3, var8.vector.z * var3);
          }
       }
 
-      GL11.glEnd();
+      GL11.glEndQuery();
       GL11.glEndList();
       this.hasList = true;
    }
diff --git a/src/teavm/java/net/PeytonPlayz585/glemu/ModeBuffer.java b/src/teavm/java/net/PeytonPlayz585/glemu/ModeBuffer.java
new file mode 100644
index 0000000..f6aaee7
--- /dev/null
+++ b/src/teavm/java/net/PeytonPlayz585/glemu/ModeBuffer.java
@@ -0,0 +1,58 @@
+package net.PeytonPlayz585.glemu;
+
+import java.nio.FloatBuffer;
+
+import net.lax1dude.eaglercraft.GLAllocation;
+
+/**
+ * Utility class that emulates immediate mode vertex data submission.
+ * Can be used to create VBO data.
+ */
+public final class ModeBuffer {
+
+	private FloatBuffer buffer;
+
+	public ModeBuffer(final int startSize) {
+		this.buffer = GLAllocation.createDirectFloatBuffer(startSize);
+	}
+
+	private void checkSize(final int count) {
+		while ( buffer.remaining() < count ) {
+			final FloatBuffer newBuffer = GLAllocation.createDirectFloatBuffer(buffer.capacity() << 1);
+			buffer.flip();
+			newBuffer.put(buffer);
+			buffer = newBuffer;
+		}
+	}
+
+	public FloatBuffer getBuffer() {
+		buffer.flip();
+		return buffer;
+	}
+
+	public void glVertex2f(final float x, final float y) {
+		checkSize(2);
+		buffer.put(x).put(y);
+	}
+
+	public void glVertex3f(final float x, final float y, final float z) {
+		checkSize(3);
+		buffer.put(x).put(y).put(z);
+	}
+
+	public void glVertex4f(final float x, final float y, final float z, final float w) {
+		checkSize(4);
+		buffer.put(x).put(y).put(z).put(w);
+	}
+
+	public void glNormal3f(final float x, final float y, final float z) {
+		checkSize(3);
+		buffer.put(x).put(y).put(z);
+	}
+
+	public void glTexCoord2f(final float s, final float t) {
+		checkSize(2);
+		buffer.put(s).put(t);
+	}
+
+}
\ No newline at end of file