adding FrameBufferListener

Mumfrey
1 parent a2baddb7
Showing 6 changed files with 128 additions and 5 deletions
debug/obfuscation.properties
java/client/com/mumfrey/liteloader/FrameBufferListener.java
java/client/com/mumfrey/liteloader/client/CallbackProxyClient.java
java/client/com/mumfrey/liteloader/client/ClientEvents.java
java/client/com/mumfrey/liteloader/client/transformers/LiteLoaderEventInjectionTransformer.java
java/common/com/mumfrey/liteloader/core/runtime/Obf.java
@@ -14,4 +14,6 @@ field_148759_a=underlyingIntegerMap
 #field_148748_b=
 field_147559_m=mapSpecialRenderers
 field_145855_i=nameToClassMap
-field_145853_j=classToNameMap
 \ No newline at end of file
+field_145853_j=classToNameMap
+func_147615_c=framebufferRender
+func_147612_c=bindFramebufferTexture
 \ No newline at end of file
+package com.mumfrey.liteloader;
+
+import net.minecraft.client.shader.Framebuffer;
+
+/**
+ * Interface for mods which want to interact with Minecraft's main Frame Buffer Object
+ *
+ * @author Adam Mummery-Smith
+ */
+public interface FrameBufferListener extends LiteMod
+{
+	/**
+	 * Called before the FBO is rendered. Useful if you want to interact with the FBO before it is drawn to the screen 
+	 */
+	public abstract void preRenderFBO(Framebuffer fbo);
+	
+	/**
+	 * Called immediately before the FBO is rendered to the screen, after the appropriate GL modes and matrix transforms
+	 * have been set but before the FBO is actually rendered into the main output buffer.
+	 *   
+	 * @param fbo FBO instance
+	 * @param width FBO width
+	 * @param height FBO height
+	 */
+	public abstract void onRenderFBO(Framebuffer fbo, int width, int height);
+
+	/**
+	 * Called after the FBO is rendered whilst still inside the FBO transform
+	 */
+	public abstract void postRenderFBO(Framebuffer fbo);
+}
@@ -2,6 +2,8 @@ package com.mumfrey.liteloader.client;
  
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.entity.EntityClientPlayerMP;
+import net.minecraft.client.renderer.OpenGlHelper;
+import net.minecraft.client.shader.Framebuffer;
 import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraft.network.INetHandler;
 import net.minecraft.network.NetworkManager;
@@ -39,6 +41,10 @@ public class CallbackProxyClient
 	private static boolean clock = false;
  
 	private static ClientEvents events;
+
+	private static boolean fboEnabled;
+
+	private static boolean renderingFBO;
  
 	public static void handleLoginSuccessPacket(INetHandler netHandler, S02PacketLoginSuccess packet)
 	{
@@ -261,9 +267,40 @@ public class CallbackProxyClient
 	{
 		CallbackProxyClient.events.onSendChatMessage(e, message);
 	}
+	
+	public static void onResize(EventInfo<Minecraft> e)
+	{
+		CallbackProxyClient.events.onResize(e.getSource());
+	}
+	
+	public static void preRenderFBO(EventInfo<Minecraft> e)
+	{
+		CallbackProxyClient.fboEnabled = OpenGlHelper.isFramebufferEnabled();
+		
+		if (CallbackProxyClient.fboEnabled)
+		{
+			CallbackProxyClient.renderingFBO = true;
+			CallbackProxyClient.events.preRenderFBO(e.getSource().getFramebuffer());
+		}
+	}
+	
+	public static void postRenderFBO(EventInfo<Minecraft> e)
+	{
+		CallbackProxyClient.renderingFBO = false;
  
-    public static void onResize(EventInfo<Minecraft> e)
-    {
-    	CallbackProxyClient.events.onResize(e.getSource());
-    }
+		if (CallbackProxyClient.fboEnabled)
+		{
+			CallbackProxyClient.events.postRenderFBO(e.getSource().getFramebuffer());
+		}
+	}
+	
+	public static void renderFBO(EventInfo<Framebuffer> e, int width, int height)
+	{
+		if (CallbackProxyClient.renderingFBO)
+		{
+			CallbackProxyClient.events.onRenderFBO(e.getSource(), width, height);
+		}
+		
+		CallbackProxyClient.renderingFBO = false;
+	}
 }
@@ -6,6 +6,7 @@ import net.minecraft.client.Minecraft;
 import net.minecraft.client.entity.EntityClientPlayerMP;
 import net.minecraft.client.gui.GuiNewChat;
 import net.minecraft.client.gui.ScaledResolution;
+import net.minecraft.client.shader.Framebuffer;
 import net.minecraft.network.INetHandler;
 import net.minecraft.network.login.INetHandlerLoginClient;
 import net.minecraft.network.login.server.S02PacketLoginSuccess;
@@ -159,6 +160,11 @@ public class ClientEvents extends Events&lt;Minecraft, IntegratedServer&gt;
 	 * List of mods which monitor changes in the viewport
 	 */
 	private LinkedList<ViewportListener> viewportListeners = new LinkedList<ViewportListener>();
+	
+	/**
+	 * List of mods which interact with the main minecraft FBO
+	 */
+	private LinkedList<FrameBufferListener> frameBufferListeners = new LinkedList<FrameBufferListener>();
  
 	/**
 	 * Hash code of the current world. We don't store the world reference here because we don't want
@@ -212,6 +218,7 @@ public class ClientEvents extends Events&lt;Minecraft, IntegratedServer&gt;
 		delegate.registerInterface(OutboundChatListener.class);
 		delegate.registerInterface(OutboundChatFilter.class);
 		delegate.registerInterface(ViewportListener.class);
+		delegate.registerInterface(FrameBufferListener.class);
 	}
  
 	/**
@@ -437,6 +444,17 @@ public class ClientEvents extends Events&lt;Minecraft, IntegratedServer&gt;
 			this.viewportListeners.add(viewportListener);
 		}
 	}
+	
+	/**
+	 * @param frameBufferListener
+	 */
+	public void addFrameBufferListener(FrameBufferListener frameBufferListener)
+	{
+		if (!this.frameBufferListeners.contains(frameBufferListener))
+		{
+			this.frameBufferListeners.add(frameBufferListener);
+		}
+	}
  
 	/**
 	 * Late initialisation callback
@@ -778,4 +796,22 @@ public class ClientEvents extends Events&lt;Minecraft, IntegratedServer&gt;
 		for (JoinGameListener joinGameListener : this.joinGameListeners)
 			joinGameListener.onJoinGame(netHandler, loginPacket);
 	}
+
+	void preRenderFBO(Framebuffer framebuffer)
+	{
+		for (FrameBufferListener frameBufferListener : this.frameBufferListeners)
+			frameBufferListener.preRenderFBO(framebuffer);
+	}
+
+	void onRenderFBO(Framebuffer framebuffer, int width, int height)
+	{
+		for (FrameBufferListener frameBufferListener : this.frameBufferListeners)
+			frameBufferListener.onRenderFBO(framebuffer, width, height);
+	}
+
+	void postRenderFBO(Framebuffer framebuffer)
+	{
+		for (FrameBufferListener frameBufferListener : this.frameBufferListeners)
+			frameBufferListener.postRenderFBO(framebuffer);
+	}
 }
@@ -5,6 +5,7 @@ import com.mumfrey.liteloader.transformers.event.Event;
 import com.mumfrey.liteloader.transformers.event.EventInjectionTransformer;
 import com.mumfrey.liteloader.transformers.event.InjectionPoint;
 import com.mumfrey.liteloader.transformers.event.MethodInfo;
+import com.mumfrey.liteloader.transformers.event.inject.BeforeInvoke;
 import com.mumfrey.liteloader.transformers.event.inject.MethodHead;
  
 public class LiteLoaderEventInjectionTransformer extends EventInjectionTransformer
@@ -21,5 +22,18 @@ public class LiteLoaderEventInjectionTransformer extends EventInjectionTransform
 		Event updateFramebufferSize = Event.getOrCreate("updateFramebufferSize", false);
 		MethodInfo updateFramebufferSizeTarget = new MethodInfo(Obf.Minecraft, Obf.updateFramebufferSize, Void.TYPE);
 		this.addEvent(updateFramebufferSize, updateFramebufferSizeTarget, head).addListener(new MethodInfo(Obf.CallbackProxyClient, "onResize"));
+		
+		MethodInfo framebufferRender = new MethodInfo(Obf.FrameBuffer, Obf.framebufferRender, "(II)V");
+		BeforeInvoke beforeFramebufferRender = new BeforeInvoke(framebufferRender);
+		
+		Event preRenderFBO = Event.getOrCreate("preRenderFBO", false);
+		MethodInfo runGameLoop = new MethodInfo(Obf.Minecraft, Obf.runGameLoop, Void.TYPE);
+		this.addEvent(preRenderFBO, runGameLoop, beforeFramebufferRender).addListener(new MethodInfo(Obf.CallbackProxyClient, "preRenderFBO"));
+		
+		Event renderFBO = Event.getOrCreate("renderFBO", false);
+		this.addEvent(renderFBO, framebufferRender, new BeforeInvoke(new MethodInfo(Obf.FrameBuffer, Obf.bindFramebufferTexture, Void.TYPE))).addListener(new MethodInfo(Obf.CallbackProxyClient, "renderFBO"));
+		
+		Event postRenderFBO = Event.getOrCreate("postRenderFBO", false);
+		this.addEvent(postRenderFBO, runGameLoop, InjectionPoint.after(beforeFramebufferRender)).addListener(new MethodInfo(Obf.CallbackProxyClient, "postRenderFBO"));;
 	}
 }
@@ -46,6 +46,7 @@ public class Obf
 	public static final Obf         EntityClientPlayerMP = new Obf("net.minecraft.client.entity.EntityClientPlayerMP",           "bjk" );
 	public static final Obf                       Blocks = new Obf("net.minecraft.init.Blocks",                                  "ajn" );
 	public static final Obf                        Items = new Obf("net.minecraft.init.Items",                                   "ade" );
+	public static final Obf                  FrameBuffer = new Obf("net.minecraft.client.shader.Framebuffer",                    "bmg" );
  
 	// Fields
 	// -----------------------------------------------------------------------------------------
@@ -82,6 +83,8 @@ public class Obf
 	public static final Obf            startServerThread = new Obf("func_71256_s",                                               "w"   );
 	public static final Obf              sendChatMessage = new Obf("func_71165_d",                                               "a"   );
 	public static final Obf        updateFramebufferSize = new Obf("func_147119_ah",                                             "an"  );
+	public static final Obf            framebufferRender = new Obf("func_147615_c",                                              "c"   );
+	public static final Obf       bindFramebufferTexture = new Obf("func_147612_c",                                              "c"   );
  
 	public static final int MCP = 0;
 	public static final int SRG = 1;