From 879a4793531d10350ed3c3e2a542892f7c8d3373 Mon Sep 17 00:00:00 2001
From: PeytonPlayz595 <106421860+PeytonPlayz595@users.noreply.github.com>
Date: Mon, 10 Jul 2023 12:02:29 -0400
Subject: [PATCH] Added some more things to the OpenGL Emulator

Added a BufferUtils class, and rewrote "glOrtho" to take in float & double parameters.
---
 .../minecraft/GlStateManager.java             | 34 +++++++++++++++----
 src/main/java/org/lwjgl/BufferUtils.java      | 23 +++++++++++++
 2 files changed, 50 insertions(+), 7 deletions(-)
 create mode 100644 src/main/java/org/lwjgl/BufferUtils.java

diff --git a/src/main/java/net/PeytonPlayz585/minecraft/GlStateManager.java b/src/main/java/net/PeytonPlayz585/minecraft/GlStateManager.java
index 9edb2bb..d1b58a0 100644
--- a/src/main/java/net/PeytonPlayz585/minecraft/GlStateManager.java
+++ b/src/main/java/net/PeytonPlayz585/minecraft/GlStateManager.java
@@ -325,23 +325,43 @@ public class GlStateManager extends LWJGL {
 		_wglClear(p1);
 	}
 
-	public static final void glOrtho(float left, float right, float bottom, float top, float zNear, float zFar) {
+	public static final void glOrtho(double l, double r, double b, double t, double n, double f) {
 		Matrix4f res = getMatrix();
-		res.m00 = 2.0f / (right - left);
+		res.m00 = (float) (2.0f / (r - l));
 		res.m01 = 0.0f;
 		res.m02 = 0.0f;
 		res.m03 = 0.0f;
 		res.m10 = 0.0f;
-		res.m11 = 2.0f / (top - bottom);
+		res.m11 = (float) (2.0f / (t - b));
 		res.m12 = 0.0f;
 		res.m13 = 0.0f;
 		res.m20 = 0.0f;
 		res.m21 = 0.0f;
-		res.m22 = 2.0f / (zFar - zNear);
+		res.m22 = (float) (2.0f / (f - n));
 		res.m23 = 0.0f;
-		res.m30 = -(right + left) / (right - left);
-		res.m31 = -(top + bottom) / (top - bottom);
-		res.m32 = (zFar + zNear) / (zFar - zNear);
+		res.m30 = (float) (-(r + l) / (r - l));
+		res.m31 = (float) (-(t + b) / (t - b));
+		res.m32 = (float) ((f + n) / (f - n));
+		res.m33 = 1.0f;
+	}
+
+	public static final void glOrtho(float l, float r, float b, float t, float n, float f) {
+		Matrix4f res = getMatrix();
+		res.m00 = 2.0f / (r - l);
+		res.m01 = 0.0f;
+		res.m02 = 0.0f;
+		res.m03 = 0.0f;
+		res.m10 = 0.0f;
+		res.m11 = 2.0f / (t - b);
+		res.m12 = 0.0f;
+		res.m13 = 0.0f;
+		res.m20 = 0.0f;
+		res.m21 = 0.0f;
+		res.m22 = 2.0f / (f - n);
+		res.m23 = 0.0f;
+		res.m30 = -(r + l) / (r - l);
+		res.m31 = -(t + b) / (t - b);
+		res.m32 = (f + n) / (f - n);
 		res.m33 = 1.0f;
 	}
 
diff --git a/src/main/java/org/lwjgl/BufferUtils.java b/src/main/java/org/lwjgl/BufferUtils.java
new file mode 100644
index 0000000..bdba91c
--- /dev/null
+++ b/src/main/java/org/lwjgl/BufferUtils.java
@@ -0,0 +1,23 @@
+package org.lwjgl;
+
+import java.nio.ByteBuffer;
+import java.nio.FloatBuffer;
+import java.nio.IntBuffer;
+
+import net.PeytonPlayz585.minecraft.GLAllocation;
+
+public class BufferUtils {
+	
+	public static ByteBuffer createByteBuffer(int parInt) {
+		return GLAllocation.createDirectByteBuffer(parInt);
+	}
+	
+	public static IntBuffer createIntBuffer(int parInt) {
+		return GLAllocation.createDirectIntBuffer(parInt);
+	}
+	
+	public static FloatBuffer createFloatBuffer(int parInt) {
+		return GLAllocation.createDirectFloatBuffer(parInt);
+	}
+
+}