Got the game to actually render

build.gradle

@@ -0,0 +1,82 @@
+buildscript {
+    repositories {
+        mavenCentral()
+    }
+
+    dependencies {
+        classpath 'io.github.zebalu:teavm-gradle-plugin:1.0.0'
+    }
+}
+
+apply plugin: 'java'
+apply plugin: 'eclipse'
+apply plugin: 'io.github.zebalu.teavm-gradle-plugin'
+
+sourceCompatibility = 1.8
+targetCompatibility = 1.8
+
+sourceSets {
+    main {
+        java {
+            srcDir 'src/main/java'
+        }
+    }
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    implementation 'org.teavm:teavm-platform:0.6.1'
+    implementation 'org.teavm:teavm-classlib:0.6.1'
+    implementation 'com.jcraft:jzlib:1.1.3'
+}
+
+teavm {
+   
+   compileScopes = null;
+   minifying = false;
+   maxTopLevelNames = 10000;
+   properties = null;
+   debugInformationGenerated = false;
+   sourceMapsGenerated = true;
+   sourceFilesCopied = false;
+   incremental = false;
+   transformers = null;
+   
+   /** Where to save the result */
+   targetDirectory = file("js");
+   
+   /** The directory to monitor to decide if compile is up-to-date or not */
+   sourceDirectory = file("src");
+   
+   /** How to name the result file. */
+   targetFileName = "app.js";
+   
+   /** Which class holds your public static void main(Strin[] args) method */
+   mainClass = 'net.lax1dude.eaglercraft.Client';
+   
+   /** This will be the name of your main method after compilation. */
+   entryPointName = 'main';
+   
+   classesToPreserve = null;
+   stopOnErrors = false;
+   optimizationLevel = "ADVANCED"; //org.teavm.vm.TeaVMOptimizationLevel.SIMPLE;
+   fastGlobalAnalysis = false;
+   targetType = "JAVASCRIPT"; //org.teavm.tooling.TeaVMTargetType.JAVASCRIPT;
+   cacheDirectory = null;
+   wasmVersion = "V_0x1"; //org.teavm.backend.wasm.render.WasmBinaryVersion.V_0x1;
+   minHeapSize = 4;
+   maxHeapSize = 128;
+   outOfProcess = false;
+   processMemory = 512;
+   longjmpSupported = true;
+   heapDump = false;
+   
+   /** Add name of configurations here where to look for jarfiles. */
+   includeJarsFrom = [];
+   
+   /** By default teavmc taskd epends on javaCompile task, unless this varaibale is true. */
+   skipJavaCompile = false;       
+}

src/main/java/net/minecraft/client/Minecraft.java

@@ -159,39 +159,47 @@ public class Minecraft implements Runnable {
 	}
 
 	private void loadScreen() {
-		ScaledResolution var1 = new ScaledResolution(this.displayWidth, this.displayHeight);
+		int xx = displayWidth;
-		int var2 = var1.getScaledWidth();
+		if(xx > displayHeight) {
-		int var3 = var1.getScaledHeight();
+			xx = displayHeight;
-		GL11.glClear(GL11.GL_DEPTH_BUFFER_BIT | GL11.GL_COLOR_BUFFER_BIT);
+		}
-		GL11.glMatrixMode(GL11.GL_PROJECTION);
+		GL11.glClear(16640);
+		GL11.glMatrixMode(5889 /* GL_PROJECTION */);
 		GL11.glLoadIdentity();
-		GL11.glOrtho(0.0D, (double)var2, (double)var3, 0.0D, 1000.0D, 3000.0D);
+		GL11.glOrtho(0.0F, displayWidth, displayHeight, 0.0F, 1000F, 3000F);
-		GL11.glMatrixMode(GL11.GL_MODELVIEW);
+		GL11.glMatrixMode(5888 /* GL_MODELVIEW0_ARB */);
 		GL11.glLoadIdentity();
-		GL11.glTranslatef(0.0F, 0.0F, -2000.0F);
+		GL11.glTranslatef(0.0F, 0.0F, -2000F);
-		GL11.glViewport(0, 0, this.displayWidth, this.displayHeight);
+		GL11.glViewport(0, 0, displayWidth, displayHeight);
 		GL11.glClearColor(0.0F, 0.0F, 0.0F, 0.0F);
-		Tessellator var4 = Tessellator.instance;
+		Tessellator tessellator = Tessellator.instance;
-		GL11.glDisable(GL11.GL_LIGHTING);
+		GL11.glDisable(2896 /* GL_LIGHTING */);
-		GL11.glEnable(GL11.GL_TEXTURE_2D);
+		GL11.glEnable(3553 /* GL_TEXTURE_2D */);
-		GL11.glDisable(GL11.GL_FOG);
+		GL11.glDisable(2912 /* GL_FOG */);
-		GL11.glBindTexture(GL11.GL_TEXTURE_2D, this.renderEngine.getTexture("/title/mojang.png"));
+		GL11.glBindTexture(3553 /* GL_TEXTURE_2D */, renderEngine.getTexture("/title/mojang.png"));
-		var4.startDrawingQuads();
+		tessellator.startDrawingQuads();
-		var4.setColorOpaque_I(16777215);
+		tessellator.setColorOpaque_I(0xffffff);
-		var4.addVertexWithUV(0.0D, (double)this.displayHeight, 0.0D, 0.0D, 0.0D);
+		tessellator.addVertexWithUV(0.0D, displayHeight, 0.0D, 0.0D, 0.0D);
-		var4.addVertexWithUV((double)this.displayWidth, (double)this.displayHeight, 0.0D, 0.0D, 0.0D);
+		tessellator.addVertexWithUV(displayWidth, displayHeight, 0.0D, 0.0D, 0.0D);
-		var4.addVertexWithUV((double)this.displayWidth, 0.0D, 0.0D, 0.0D, 0.0D);
+		tessellator.addVertexWithUV(displayWidth, 0.0D, 0.0D, 0.0D, 0.0D);
-		var4.addVertexWithUV(0.0D, 0.0D, 0.0D, 0.0D, 0.0D);
+		tessellator.addVertexWithUV(0.0D, 0.0D, 0.0D, 0.0D, 0.0D);
-		var4.draw();
+		tessellator.draw();
-		short var5 = 256;
-		short var6 = 256;
 		GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
-		var4.setColorOpaque_I(16777215);
+		tessellator.startDrawingQuads();
-		this.func_6274_a((this.displayWidth / 2 - var5) / 2, (this.displayHeight / 2 - var6) / 2, 0, 0, var5, var6);
+		tessellator.setColorOpaque_I(0xffffff);
-		GL11.glDisable(GL11.GL_LIGHTING);
+		int marginX = (displayWidth - xx) / 2;
-		GL11.glDisable(GL11.GL_FOG);
+		int marginY = (displayHeight - xx) / 2;
-		GL11.glEnable(GL11.GL_ALPHA_TEST);
+		tessellator.addVertexWithUV(marginX, displayHeight - marginY, 0.0D, 0.0D, 1.0D);
-		GL11.glAlphaFunc(GL11.GL_GREATER, 0.1F);
+		tessellator.addVertexWithUV(displayWidth - marginX, displayHeight - marginY, 0.0D, 1.0D, 1.0D);
+		tessellator.addVertexWithUV(displayWidth - marginX, marginY, 0.0D, 1.0D, 0.0D);
+		tessellator.addVertexWithUV(marginX, marginY, 0.0D, 0.0D, 0.0D);
+		tessellator.draw();
+		GL11.glDisable(2896 /* GL_LIGHTING */);
+		GL11.glDisable(2912 /* GL_FOG */);
+		GL11.glEnable(3008 /* GL_ALPHA_TEST */);
+		GL11.glAlphaFunc(516, 0.1F);
+		GL11.webgl.flush();
+		GL11.updateDisplay();
 	}
 
 	public void func_6274_a(int var1, int var2, int var3, int var4, int var5, int var6) {
@@ -304,6 +312,10 @@ public class Minecraft implements Runnable {
 					if(this.gameSettings.limitFramerate) {
 						Thread.sleep(5L);
 					}
+					
+					if(!(Keyboard.getEventKey() == 33 && Keyboard.isKeyDown(8))) {
+						GL11.updateDisplay();
+					}
 
 					if(!this.field_6307_v) {
 						if(this.field_6327_b != null) {