Added global shader debug printf util

src/main/java/me/cortex/voxy/client/core/VoxelCore.java

@@ -80,6 +80,7 @@ public class VoxelCore {
 
     public void renderSetup(Frustum frustum, Camera camera) {
         this.renderer.setup(camera);
+        PrintfDebugUtil.tick();
     }
 
     private static Matrix4f makeProjectionMatrix(float near, float far) {
@@ -154,6 +155,8 @@ public class VoxelCore {
         debug.add("I/S tasks: " + this.world.ingestService.getTaskCount() + "/"+this.world.savingService.getTaskCount());
         debug.add("SCS: " + Arrays.toString(this.world.getLoadedSectionCacheSizes()));
         this.renderer.addDebugData(debug);
+
+        PrintfDebugUtil.addToOut(debug);
     }
 
     //Note: when doing translucent rendering, only need to sort when generating the geometry, or when crossing into the center zone

src/main/java/me/cortex/voxy/client/core/rendering/PrintfDebugUtil.java

@@ -0,0 +1,49 @@
+package me.cortex.voxy.client.core.rendering;
+
+import me.cortex.voxy.client.core.gl.shader.IShaderProcessor;
+import me.cortex.voxy.client.core.gl.shader.PrintfInjector;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public final class PrintfDebugUtil {
+    public static final boolean ENABLE_PRINTF_DEBUGGING = System.getProperty("voxy.enableShaderDebugPrintf", "false").equals("true");
+
+    private static final List<String> printfQueue2 = new ArrayList<>();
+    private static final List<String> printfQueue = new ArrayList<>();
+    private static final IShaderProcessor PRINTF;
+    public static final PrintfInjector PRINTF_object;
+
+
+    static {
+        if (ENABLE_PRINTF_DEBUGGING) {
+            PRINTF_object = new PrintfInjector(50000, 10, line -> {
+                if (line.startsWith("LOG")) {
+                    System.err.println(line);
+                }
+                printfQueue.add(line);
+            }, printfQueue::clear);
+            PRINTF = PRINTF_object;
+        } else {
+            PRINTF_object = null;
+            //Todo add a dummy processor that just removes all the printf calls
+            PRINTF = null;
+        }
+    }
+
+    public static void tick() {
+        if (ENABLE_PRINTF_DEBUGGING) {
+            printfQueue2.clear();
+            printfQueue2.addAll(printfQueue);
+            printfQueue.clear();
+            PRINTF_object.download();
+        }
+    }
+
+    public static void addToOut(List<String> out) {
+        if (ENABLE_PRINTF_DEBUGGING) {
+            out.add("Printf Queue: ");
+            out.addAll(printfQueue2);
+        }
+    }
+}

src/main/java/me/cortex/voxy/client/core/rendering/RenderService.java

@@ -1,6 +1,7 @@
 package me.cortex.voxy.client.core.rendering;
 
 import me.cortex.voxy.client.config.VoxyConfig;
+import me.cortex.voxy.client.core.gl.shader.PrintfInjector;
 import me.cortex.voxy.client.core.model.ModelBakerySubsystem;
 import me.cortex.voxy.client.core.rendering.building.BuiltSection;
 import me.cortex.voxy.client.core.rendering.building.RenderGenerationService;
@@ -14,6 +15,7 @@ import me.cortex.voxy.client.core.rendering.util.UploadStream;
 import me.cortex.voxy.common.world.WorldEngine;
 import net.minecraft.client.render.Camera;
 
+import java.util.ArrayList;
 import java.util.List;
 
 import static org.lwjgl.opengl.ARBDirectStateAccess.glGetNamedFramebufferAttachmentParameteri;

src/main/java/me/cortex/voxy/client/core/rendering/hierachical2/HierarchicalOcclusionTraverser.java

@@ -22,6 +22,7 @@ public class HierarchicalOcclusionTraverser {
     private final GlBuffer requestBuffer;
 
     private final GlBuffer nodeBuffer;
+    private final GlBuffer uniformBuffer = new GlBuffer(1024);
 
     private final HiZBuffer hiZBuffer = new HiZBuffer();
 
@@ -79,5 +80,6 @@ public class HierarchicalOcclusionTraverser {
         this.requestBuffer.free();
         this.hiZBuffer.free();
         this.nodeBuffer.free();
+        this.uniformBuffer.free();
     }
 }