From e4fe0565869c2f419b85a00ec2dd9a20e3880d6c Mon Sep 17 00:00:00 2001
From: mcrcortex <18544518+MCRcortex@users.noreply.github.com>
Date: Sun, 4 Aug 2024 22:08:49 +1000
Subject: [PATCH] Render basics

---
 .../me/cortex/voxy/client/core/VoxelCore.java |  3 +-
 .../client/core/rendering/RenderService.java  |  6 +-
 .../HierarchicalOcclusionTraverser.java       | 17 ++++-
 .../section/AbstractSectionRenderer.java      |  1 -
 .../section/BasicSectionGeometryManager.java  |  1 -
 .../section/MDICSectionRenderer.java          | 76 ++++++++++++++-----
 .../voxy/shaders/lod/gl46/bindings.glsl       |  8 +-
 .../assets/voxy/shaders/lod/gl46/cmdgen.comp  |  6 +-
 .../voxy/shaders/lod/gl46/cull/raster.frag    |  1 +
 .../voxy/shaders/lod/gl46/cull/raster.vert    |  9 ++-
 .../assets/voxy/shaders/lod/gl46/prep.comp    | 23 ++++++
 .../assets/voxy/shaders/lod/gl46/quads2.vert  |  2 +-
 12 files changed, 120 insertions(+), 33 deletions(-)
 create mode 100644 src/main/resources/assets/voxy/shaders/lod/gl46/prep.comp

diff --git a/src/main/java/me/cortex/voxy/client/core/VoxelCore.java b/src/main/java/me/cortex/voxy/client/core/VoxelCore.java
index 3b2033d7..73b5b904 100644
--- a/src/main/java/me/cortex/voxy/client/core/VoxelCore.java
+++ b/src/main/java/me/cortex/voxy/client/core/VoxelCore.java
@@ -113,7 +113,7 @@ public class VoxelCore {
         matrices.translate(-cameraX, -cameraY, -cameraZ);
         matrices.pop();
 
-        var projection = computeProjectionMat();
+        var projection = computeProjectionMat();//RenderSystem.getProjectionMatrix();
 
         var viewport = this.renderer.getViewport();
         viewport
@@ -121,6 +121,7 @@ public class VoxelCore {
                 .setModelView(matrices.peek().getPositionMatrix())
                 .setCamera(cameraX, cameraY, cameraZ)
                 .setScreenSize(MinecraftClient.getInstance().getFramebuffer().textureWidth, MinecraftClient.getInstance().getFramebuffer().textureHeight);
+        viewport.frameId++;
 
         int boundFB = GL11.glGetInteger(GL_DRAW_FRAMEBUFFER_BINDING);
         if (boundFB == 0) {
diff --git a/src/main/java/me/cortex/voxy/client/core/rendering/RenderService.java b/src/main/java/me/cortex/voxy/client/core/rendering/RenderService.java
index b5485d8d..d9388278 100644
--- a/src/main/java/me/cortex/voxy/client/core/rendering/RenderService.java
+++ b/src/main/java/me/cortex/voxy/client/core/rendering/RenderService.java
@@ -55,8 +55,8 @@ public class RenderService<T extends AbstractSectionRenderer<J, ?>, J extends Vi
         world.setDirtyCallback(this.nodeManager::sectionUpdate);
 
 
-        for(int x = -10; x<=10;x++) {
-            for (int z = -10; z <= 10; z++) {
+        for(int x = -1; x<=1;x++) {
+            for (int z = -1; z <= 1; z++) {
                 for (int y = -3; y <= 3; y++) {
                     this.renderGen.enqueueTask(0, x, y, z);
                 }
@@ -104,7 +104,7 @@ public class RenderService<T extends AbstractSectionRenderer<J, ?>, J extends Vi
         int depthBuffer = glGetFramebufferAttachmentParameteri(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME);
         this.traversal.doTraversal(viewport, depthBuffer);
 
-        this.sectionRenderer.buildDrawCallsAndRenderTemporal(viewport, null);
+        this.sectionRenderer.buildDrawCallsAndRenderTemporal(viewport, this.traversal.getRenderListBuffer());
     }
 
     public void renderFarAwayTranslucent(J viewport) {
diff --git a/src/main/java/me/cortex/voxy/client/core/rendering/hierachical2/HierarchicalOcclusionTraverser.java b/src/main/java/me/cortex/voxy/client/core/rendering/hierachical2/HierarchicalOcclusionTraverser.java
index 63f1b381..d09b395c 100644
--- a/src/main/java/me/cortex/voxy/client/core/rendering/hierachical2/HierarchicalOcclusionTraverser.java
+++ b/src/main/java/me/cortex/voxy/client/core/rendering/hierachical2/HierarchicalOcclusionTraverser.java
@@ -22,7 +22,8 @@ public class HierarchicalOcclusionTraverser {
     private final GlBuffer requestBuffer;
 
     private final GlBuffer nodeBuffer;
-    private final GlBuffer uniformBuffer = new GlBuffer(1024);
+    private final GlBuffer uniformBuffer = new GlBuffer(1024).zero();
+    private final GlBuffer renderList = new GlBuffer(100_000 * 4 + 4).zero();//100k sections max to render
 
     private final HiZBuffer hiZBuffer = new HiZBuffer();
 
@@ -50,6 +51,15 @@ public class HierarchicalOcclusionTraverser {
         // TODO: swap to persistent gpu thread instead
 
 
+        long uploadPtr = UploadStream.INSTANCE.upload(this.renderList, 0, 1024);
+
+        MemoryUtil.memPutInt(uploadPtr, 1024/4-1);
+        for (int i = 1; i < 1024/4; i++) {
+            MemoryUtil.memPutInt(uploadPtr + 4*i, i-1);
+        }
+
+        UploadStream.INSTANCE.commit();
+
         this.downloadResetRequestQueue();
     }
 
@@ -60,6 +70,10 @@ public class HierarchicalOcclusionTraverser {
         nglClearNamedBufferSubData(this.requestBuffer.id, GL_R32UI, 0, 4, GL_RED_INTEGER, GL_UNSIGNED_INT, 0);
     }
 
+    public GlBuffer getRenderListBuffer() {
+        return this.renderList;
+    }
+
     private void forwardDownloadResult(long ptr, long size) {
         int count = MemoryUtil.memGetInt(ptr);
         if (count < 0 || count > 50000) {
@@ -81,5 +95,6 @@ public class HierarchicalOcclusionTraverser {
         this.hiZBuffer.free();
         this.nodeBuffer.free();
         this.uniformBuffer.free();
+        this.renderList.free();
     }
 }
diff --git a/src/main/java/me/cortex/voxy/client/core/rendering/section/AbstractSectionRenderer.java b/src/main/java/me/cortex/voxy/client/core/rendering/section/AbstractSectionRenderer.java
index 1b885f64..6fb8e5ec 100644
--- a/src/main/java/me/cortex/voxy/client/core/rendering/section/AbstractSectionRenderer.java
+++ b/src/main/java/me/cortex/voxy/client/core/rendering/section/AbstractSectionRenderer.java
@@ -4,7 +4,6 @@ package me.cortex.voxy.client.core.rendering.section;
 import me.cortex.voxy.client.core.gl.GlBuffer;
 import me.cortex.voxy.client.core.model.ModelStore;
 import me.cortex.voxy.client.core.rendering.Viewport;
-import me.cortex.voxy.client.core.rendering.geometry.OLD.AbstractGeometryManager;
 
 import java.util.List;
 
diff --git a/src/main/java/me/cortex/voxy/client/core/rendering/section/BasicSectionGeometryManager.java b/src/main/java/me/cortex/voxy/client/core/rendering/section/BasicSectionGeometryManager.java
index 957294e1..fdd92170 100644
--- a/src/main/java/me/cortex/voxy/client/core/rendering/section/BasicSectionGeometryManager.java
+++ b/src/main/java/me/cortex/voxy/client/core/rendering/section/BasicSectionGeometryManager.java
@@ -5,7 +5,6 @@ import it.unimi.dsi.fastutil.ints.IntOpenHashSet;
 import it.unimi.dsi.fastutil.objects.ObjectArrayList;
 import me.cortex.voxy.client.core.gl.GlBuffer;
 import me.cortex.voxy.client.core.rendering.building.BuiltSection;
-import me.cortex.voxy.client.core.rendering.geometry.OLD.DefaultGeometryManager;
 import me.cortex.voxy.client.core.rendering.util.BufferArena;
 import me.cortex.voxy.client.core.rendering.util.UploadStream;
 import me.cortex.voxy.common.util.HierarchicalBitSet;
diff --git a/src/main/java/me/cortex/voxy/client/core/rendering/section/MDICSectionRenderer.java b/src/main/java/me/cortex/voxy/client/core/rendering/section/MDICSectionRenderer.java
index 6336fa40..6fc5864b 100644
--- a/src/main/java/me/cortex/voxy/client/core/rendering/section/MDICSectionRenderer.java
+++ b/src/main/java/me/cortex/voxy/client/core/rendering/section/MDICSectionRenderer.java
@@ -8,11 +8,7 @@ import me.cortex.voxy.client.core.model.ModelStore;
 import me.cortex.voxy.client.core.rendering.LightMapHelper;
 import me.cortex.voxy.client.core.rendering.RenderService;
 import me.cortex.voxy.client.core.rendering.SharedIndexBuffer;
-import me.cortex.voxy.client.core.rendering.geometry.OLD.AbstractFarWorldRenderer;
-import me.cortex.voxy.client.core.rendering.geometry.OLD.AbstractGeometryManager;
-import me.cortex.voxy.client.core.rendering.geometry.OLD.Gl46HierarchicalViewport;
 import me.cortex.voxy.client.core.rendering.util.UploadStream;
-import me.cortex.voxy.client.mixin.joml.AccessFrustumIntersection;
 import net.minecraft.client.render.RenderLayer;
 import net.minecraft.util.math.MathHelper;
 import org.joml.Matrix4f;
@@ -29,12 +25,11 @@ import static org.lwjgl.opengl.GL15.glBindBuffer;
 import static org.lwjgl.opengl.GL30.glBindBufferBase;
 import static org.lwjgl.opengl.GL30.glBindVertexArray;
 import static org.lwjgl.opengl.GL31.GL_UNIFORM_BUFFER;
-import static org.lwjgl.opengl.GL32.glDrawElementsInstancedBaseVertex;
 import static org.lwjgl.opengl.GL33.glBindSampler;
 import static org.lwjgl.opengl.GL40C.GL_DRAW_INDIRECT_BUFFER;
-import static org.lwjgl.opengl.GL42.glDrawElementsInstancedBaseVertexBaseInstance;
 import static org.lwjgl.opengl.GL43.*;
 import static org.lwjgl.opengl.GL45.glBindTextureUnit;
+import static org.lwjgl.opengl.GL45.glCopyNamedBufferSubData;
 
 //Uses MDIC to render the sections
 public class MDICSectionRenderer extends AbstractSectionRenderer<MDICViewport, BasicSectionGeometryManager> {
@@ -43,14 +38,23 @@ public class MDICSectionRenderer extends AbstractSectionRenderer<MDICViewport, B
             .add(ShaderType.FRAGMENT, "voxy:lod/gl46/quads.frag")
             .compile();
 
-
-    private final Shader commandGen = Shader.make()
+    private final Shader commandGenShader = Shader.make()
             .add(ShaderType.COMPUTE, "voxy:lod/gl46/cmdgen.comp")
             .compile();
 
+    private final Shader prepShader = Shader.make()
+            .add(ShaderType.COMPUTE, "voxy:lod/gl46/prep.comp")
+            .compile();
+
+    private final Shader cullShader = Shader.make()
+            .add(ShaderType.VERTEX, "voxy:lod/gl46/cull/raster.vert")
+            .add(ShaderType.FRAGMENT, "voxy:lod/gl46/cull/raster.frag")
+            .compile();
+
     private final GlBuffer uniform = new GlBuffer(1024).zero();
 
-    private final GlBuffer drawCountBuffer = new GlBuffer(64).zero();
+    //TODO: needs to be in the viewport, since it contains the compute indirect call/values
+    private final GlBuffer drawCountCallBuffer = new GlBuffer(1024).zero();
     private final GlBuffer drawCallBuffer  = new GlBuffer(5*4*400000).zero();//400k draw calls
 
     public MDICSectionRenderer(ModelStore modelStore, int maxSectionCount, long geometryCapacity) {
@@ -72,7 +76,7 @@ public class MDICSectionRenderer extends AbstractSectionRenderer<MDICViewport, B
         MemoryUtil.memPutInt(ptr, sx); ptr += 4;
         MemoryUtil.memPutInt(ptr, sy); ptr += 4;
         MemoryUtil.memPutInt(ptr, sz); ptr += 4;
-        MemoryUtil.memPutInt(ptr, viewport.frameId++); ptr += 4;
+        MemoryUtil.memPutInt(ptr, viewport.frameId); ptr += 4;
         innerTranslation.getToAddress(ptr); ptr += 4*3;
 
         UploadStream.INSTANCE.commit();
@@ -88,7 +92,7 @@ public class MDICSectionRenderer extends AbstractSectionRenderer<MDICViewport, B
 
         glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, SharedIndexBuffer.INSTANCE.id());
         glBindBuffer(GL_DRAW_INDIRECT_BUFFER, this.drawCallBuffer.id);
-        glBindBuffer(GL_PARAMETER_BUFFER_ARB, this.drawCountBuffer.id);
+        glBindBuffer(GL_PARAMETER_BUFFER_ARB, this.drawCountCallBuffer.id);
 
     }
 
@@ -102,7 +106,7 @@ public class MDICSectionRenderer extends AbstractSectionRenderer<MDICViewport, B
         glBindVertexArray(RenderService.STATIC_VAO);//Needs to be before binding
         this.bindRenderingBuffers();
 
-        glMultiDrawElementsIndirectCountARB(GL_TRIANGLES, GL_UNSIGNED_SHORT, 0, 0, Math.min((int)(this.geometryManager.getSectionCount()*4.4), 400_000), 0);
+        glMultiDrawElementsIndirectCountARB(GL_TRIANGLES, GL_UNSIGNED_SHORT, 0, 4*3, Math.min((int)(this.geometryManager.getSectionCount()*4.4), 400_000), 0);
 
         glEnable(GL_CULL_FACE);
         glBindVertexArray(0);
@@ -124,16 +128,16 @@ public class MDICSectionRenderer extends AbstractSectionRenderer<MDICViewport, B
 
         //TODO compute the draw calls
         {
-            this.commandGen.bind();
+            this.commandGenShader.bind();
             glBindBufferBase(GL_UNIFORM_BUFFER, 0, this.uniform.id);
             glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, this.drawCallBuffer.id);
-            glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 2, this.drawCountBuffer.id);
+            glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 2, this.drawCountCallBuffer.id);
             glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 3, this.geometryManager.getMetadataBufferId());
             glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 4, viewport.visibilityBuffer.id);
             glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 5, viewport.indirectLookupBuffer.id);
-            glBindBuffer(GL_DISPATCH_INDIRECT_BUFFER, this.drawCountBuffer.id);
+            glBindBuffer(GL_DISPATCH_INDIRECT_BUFFER, this.drawCountCallBuffer.id);
             glDispatchComputeIndirect(0);
-            glMemoryBarrier(GL_SHADER_STORAGE_BARRIER_BIT);
+            glMemoryBarrier(GL_COMMAND_BARRIER_BIT);
         }
 
         this.renderTerrain();
@@ -146,7 +150,39 @@ public class MDICSectionRenderer extends AbstractSectionRenderer<MDICViewport, B
 
 
 
-        this.renderTerrain();
+        //TODO: dont do a copy
+        // make it so that the viewport contains the original indirectLookupBuffer list!!!
+        // that way dont need to copy the array
+        glCopyNamedBufferSubData(sectionRenderList.id, viewport.indirectLookupBuffer.id, 0, 0, sectionRenderList.size());
+
+        {//Dispatch prep
+            this.prepShader.bind();
+            glBindBufferBase(GL_UNIFORM_BUFFER, 0, this.uniform.id);
+            glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, this.drawCountCallBuffer.id);
+            glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 2, sectionRenderList.id);
+            glDispatchCompute(1,1,1);
+            glMemoryBarrier(GL_SHADER_STORAGE_BARRIER_BIT);
+        }
+
+        {//Test occlusion
+            this.cullShader.bind();
+            glBindVertexArray(RenderService.STATIC_VAO);
+            glBindBufferBase(GL_UNIFORM_BUFFER, 0, this.uniform.id);
+            glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 1, this.geometryManager.getMetadataBufferId());
+            glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 2, viewport.visibilityBuffer.id);
+            glBindBufferBase(GL_SHADER_STORAGE_BUFFER, 3, viewport.indirectLookupBuffer.id);
+            glBindBuffer(GL_DRAW_INDIRECT_BUFFER, this.drawCountCallBuffer.id);
+            glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, SharedIndexBuffer.INSTANCE.id());
+            glEnable(GL_DEPTH_TEST);
+            glColorMask(false, false, false, false);
+            glDepthMask(false);
+            glDrawElementsIndirect(GL_TRIANGLES, GL_UNSIGNED_BYTE, 6*4);
+            glDepthMask(true);
+            glColorMask(true, true, true, true);
+            glMemoryBarrier(GL_SHADER_STORAGE_BARRIER_BIT);
+            glDisable(GL_DEPTH_TEST);
+        }
+
     }
 
     @Override
@@ -170,6 +206,10 @@ public class MDICSectionRenderer extends AbstractSectionRenderer<MDICViewport, B
         super.free();
         this.uniform.free();
         this.terrainShader.free();
-        this.commandGen.free();
+        this.commandGenShader.free();
+        this.cullShader.free();
+        this.prepShader.free();
+        this.drawCallBuffer.free();
+        this.drawCountCallBuffer.free();
     }
 }
diff --git a/src/main/resources/assets/voxy/shaders/lod/gl46/bindings.glsl b/src/main/resources/assets/voxy/shaders/lod/gl46/bindings.glsl
index 6a73788c..eb8bc0e5 100644
--- a/src/main/resources/assets/voxy/shaders/lod/gl46/bindings.glsl
+++ b/src/main/resources/assets/voxy/shaders/lod/gl46/bindings.glsl
@@ -60,13 +60,17 @@ layout(binding = DRAW_COUNT_BUFFER_BINDING, std430) restrict buffer DrawCommandC
     uint cmdGenDispatchX;
     uint cmdGenDispatchY;
     uint cmdGenDispatchZ;
+
     uint opaqueDrawCount;
     uint translucentDrawCount;
+
+    uint pad_A;
+    DrawCommand cullDrawIndirectCommand;
 };
 #endif
 
-#ifdef SECTION_METADA_BUFFER_BINDING
-layout(binding = SECTION_METADA_BUFFER_BINDING, std430) readonly restrict buffer SectionBuffer {
+#ifdef SECTION_METADATA_BUFFER_BINDING
+layout(binding = SECTION_METADATA_BUFFER_BINDING, std430) readonly restrict buffer SectionBuffer {
     SectionMeta sectionData[];
 };
 #endif
diff --git a/src/main/resources/assets/voxy/shaders/lod/gl46/cmdgen.comp b/src/main/resources/assets/voxy/shaders/lod/gl46/cmdgen.comp
index dcfdef0e..59656a3d 100644
--- a/src/main/resources/assets/voxy/shaders/lod/gl46/cmdgen.comp
+++ b/src/main/resources/assets/voxy/shaders/lod/gl46/cmdgen.comp
@@ -5,7 +5,7 @@ layout(local_size_x = 128) in;
 
 #define DRAW_BUFFER_BINDING 1
 #define DRAW_COUNT_BUFFER_BINDING 2
-#define SECTION_METADA_BUFFER_BINDING 3
+#define SECTION_METADATA_BUFFER_BINDING 3
 #define VISIBILITY_BUFFER_BINDING 4
 #define INDIRECT_SECTION_LOOKUP_BINDING 5
 
@@ -97,8 +97,8 @@ void main() {
         //Translucency
         count = meta.cntA&0xFFFF;
         if (count != 0) {
-            uint translucentCommandPtr = atomicAdd(translucentDrawCount, 1) + 400000;//FIXME: dont hardcode this offset
-            writeCmd(translucentCommandPtr, encodedPos, ptr, count);
+            //uint translucentCommandPtr = atomicAdd(translucentDrawCount, 1) + 400000;//FIXME: dont hardcode this offset
+            //writeCmd(translucentCommandPtr, encodedPos, ptr, count);
         }
         ptr += count;
 
diff --git a/src/main/resources/assets/voxy/shaders/lod/gl46/cull/raster.frag b/src/main/resources/assets/voxy/shaders/lod/gl46/cull/raster.frag
index a5870ac0..1350fe9c 100644
--- a/src/main/resources/assets/voxy/shaders/lod/gl46/cull/raster.frag
+++ b/src/main/resources/assets/voxy/shaders/lod/gl46/cull/raster.frag
@@ -1,6 +1,7 @@
 #version 460 core
 #extension GL_ARB_gpu_shader_int64 : enable
 #define VISIBILITY_ACCESS writeonly
+#define VISIBILITY_BUFFER_BINDING 2
 #import <voxy:lod/gl46/bindings.glsl>
 layout(early_fragment_tests) in;
 
diff --git a/src/main/resources/assets/voxy/shaders/lod/gl46/cull/raster.vert b/src/main/resources/assets/voxy/shaders/lod/gl46/cull/raster.vert
index 28cdb5a8..532bd16d 100644
--- a/src/main/resources/assets/voxy/shaders/lod/gl46/cull/raster.vert
+++ b/src/main/resources/assets/voxy/shaders/lod/gl46/cull/raster.vert
@@ -1,6 +1,11 @@
 #version 460 core
 #extension GL_ARB_gpu_shader_int64 : enable
 #define VISIBILITY_ACCESS writeonly
+
+#define SECTION_METADATA_BUFFER_BINDING 1
+#define VISIBILITY_BUFFER_BINDING 2
+#define INDIRECT_SECTION_LOOKUP_BINDING 3
+
 #import <voxy:lod/gl46/bindings.glsl>
 #import <voxy:lod/section.glsl>
 
@@ -8,7 +13,7 @@ flat out uint id;
 flat out uint value;
 
 void main() {
-    uint sid = gl_InstanceID;
+    uint sid = indirectLookup[gl_InstanceID];
 
     SectionMeta section = sectionData[sid];
 
@@ -25,6 +30,6 @@ void main() {
     gl_Position = MVP * vec4(vec3(pos),1);
 
     //Write to this id
-    id = sid;
+    id = gl_InstanceID;//Note!! we write to the instance id _not_ the section id
     value = frameId;
 }
\ No newline at end of file
diff --git a/src/main/resources/assets/voxy/shaders/lod/gl46/prep.comp b/src/main/resources/assets/voxy/shaders/lod/gl46/prep.comp
new file mode 100644
index 00000000..0b5be2af
--- /dev/null
+++ b/src/main/resources/assets/voxy/shaders/lod/gl46/prep.comp
@@ -0,0 +1,23 @@
+#version 450
+
+layout(local_size_x = 1) in;
+
+#define DRAW_COUNT_BUFFER_BINDING 1
+#define INDIRECT_SECTION_LOOKUP_BINDING 2
+
+#import <voxy:lod/gl46/bindings.glsl>
+
+void main() {
+    cmdGenDispatchX = ((sectionCount+127)/128);
+    cmdGenDispatchY = 1;
+    cmdGenDispatchZ = 1;
+
+    opaqueDrawCount = 0;
+    translucentDrawCount = 0;
+
+    cullDrawIndirectCommand.count = 6*2*3;
+    cullDrawIndirectCommand.instanceCount = sectionCount;
+    cullDrawIndirectCommand.firstIndex = (1<<16)*6*2;
+    cullDrawIndirectCommand.baseVertex = 0;
+    cullDrawIndirectCommand.baseInstance = 0;
+}
\ No newline at end of file
diff --git a/src/main/resources/assets/voxy/shaders/lod/gl46/quads2.vert b/src/main/resources/assets/voxy/shaders/lod/gl46/quads2.vert
index 643e446f..adeefe73 100644
--- a/src/main/resources/assets/voxy/shaders/lod/gl46/quads2.vert
+++ b/src/main/resources/assets/voxy/shaders/lod/gl46/quads2.vert
@@ -2,7 +2,7 @@
 #extension GL_ARB_gpu_shader_int64 : enable
 
 #define QUAD_BUFFER_BINDING 1
-#define SECTION_METADA_BUFFER_BINDING 2
+#define SECTION_METADATA_BUFFER_BINDING 2
 #define MODEL_BUFFER_BINDING 3
 #define MODEL_COLOUR_BUFFER_BINDING 4
 #define LIGHTING_BUFFER_BINDING 5