Fully works

gradle.properties

@@ -8,7 +8,7 @@ yarn_mappings=1.20.4+build.1
 loader_version=0.15.0
 
 # Mod Properties
-mod_version = 0.0.2-alpha
+mod_version = 0.0.3-alpha
 maven_group = me.cortex
 archives_base_name = zenith
 

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

@@ -65,7 +65,7 @@ public class VoxelCore {
 
         this.postProcessing = null;//new PostProcessing();
 
-        this.world.getMapper().setCallbacks(a->{}, a->{});
+        this.world.getMapper().setCallbacks(this.renderer::addBlockState, a->{});
 
 
         ////Resave the db incase it failed a recovery

src/main/java/me/cortex/zenith/client/core/model/ModelManager.java

@@ -244,6 +244,8 @@ public class ModelManager {
 
             faceModelData |= needsAlphaDiscard?1<<22:0;
 
+            faceModelData |= (!faceCoversFullBlock)?1<<23:0;
+
             MemoryUtil.memPutInt(faceUploadPtr, faceModelData);
         }
         this.metadataCache[modelId] = metadata;

src/main/java/me/cortex/zenith/client/core/rendering/AbstractFarWorldRenderer.java

@@ -7,6 +7,8 @@ import me.cortex.zenith.client.core.gl.GlBuffer;
 import me.cortex.zenith.client.core.model.ModelManager;
 import me.cortex.zenith.client.core.rendering.building.BuiltSection;
 import me.cortex.zenith.client.core.rendering.util.UploadStream;
+import me.cortex.zenith.common.world.other.Mapper;
+import net.minecraft.block.BlockState;
 import net.minecraft.client.MinecraftClient;
 import net.minecraft.client.render.Camera;
 import net.minecraft.client.render.Frustum;
@@ -15,6 +17,8 @@ import org.joml.FrustumIntersection;
 import org.lwjgl.system.MemoryUtil;
 
 import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentLinkedDeque;
 
 import static org.lwjgl.opengl.ARBMultiDrawIndirect.glMultiDrawElementsIndirect;
 import static org.lwjgl.opengl.GL30.*;
@@ -43,6 +47,7 @@ public abstract class AbstractFarWorldRenderer {
 
     protected FrustumIntersection frustum;
 
+    private final ConcurrentLinkedDeque<Mapper.StateEntry> blockStateUpdates = new ConcurrentLinkedDeque<>();
     public AbstractFarWorldRenderer(int geometrySize, int maxSections) {
         this.uniformBuffer  = new GlBuffer(1024);
         this.lightDataBuffer  = new GlBuffer(256*4);//256 of uint
@@ -59,7 +64,6 @@ public abstract class AbstractFarWorldRenderer {
         this.sy = camera.getBlockPos().getY() >> 5;
         this.sz = camera.getBlockPos().getZ() >> 5;
 
-
         //TODO: move this to a render function that is only called
         // once per frame when using multi viewport mods
         //it shouldent matter if its called multiple times a frame however, as its synced with fences
@@ -80,6 +84,12 @@ public abstract class AbstractFarWorldRenderer {
 
         //Upload any new geometry
         this.geometry.uploadResults();
+
+        //Do any BlockChanges
+        while (!this.blockStateUpdates.isEmpty()) {
+            var update = this.blockStateUpdates.pop();
+            this.models.addEntry(update.id, update.state);
+        }
     }
 
     public abstract void renderFarAwayOpaque(MatrixStack stack, double cx, double cy, double cz);
@@ -90,6 +100,10 @@ public abstract class AbstractFarWorldRenderer {
         this.geometry.enqueueResult(result);
     }
 
+    public void addBlockState(Mapper.StateEntry entry) {
+        this.blockStateUpdates.add(entry);
+    }
+
     public void addDebugData(List<String> debug) {
         this.models.addDebugInfo(debug);
     }

src/main/resources/assets/zenith/shaders/lod/gl46/block_model.glsl

@@ -10,4 +10,8 @@ vec4 extractFaceSizes(uint faceData) {
 
 uint faceHasAlphaCuttout(uint faceData) {
     return (faceData>>22)&1;
+}
+
+uint faceHasAlphaCuttoutOverride(uint faceData) {
+    return (faceData>>23)&1;
 }

src/main/resources/assets/zenith/shaders/lod/gl46/cull/raster.vert

@@ -20,7 +20,8 @@ void main() {
     //Transform ipos with respect to the vertex corner
     ivec3 pos = (((ipos<<detail)-baseSectionPos)<<5);
     pos += aabbOffset;
-    pos += (ivec3(gl_VertexID&1, (gl_VertexID>>2)&1, (gl_VertexID>>1)&1)*size)*(1<<detail);
+    pos -= (1<<detail);
+    pos += (ivec3(gl_VertexID&1, (gl_VertexID>>2)&1, (gl_VertexID>>1)&1)*(size+1))*(1<<detail);
 
     gl_Position = MVP * vec4(vec3(pos),1);
 

src/main/resources/assets/zenith/shaders/lod/gl46/quads.frag

@@ -1,6 +1,9 @@
 #version 460 core
 layout(binding = 0) uniform sampler2D blockModelAtlas;
 
+//TODO: need to fix when merged quads have discardAlpha set to false but they span multiple tiles
+// however they are not a full block
+
 layout(location = 0) in vec2 uv;
 layout(location = 1) in flat vec2 baseUV;
 layout(location = 2) in flat vec4 colourTinting;

src/main/resources/assets/zenith/shaders/lod/gl46/quads.vert

@@ -60,8 +60,9 @@ void main() {
     vec3 corner = innerPos * (1<<lodLevel) + lodCorner;
 
     vec2 faceOffset = getFaceSizeOffset(faceData, cornerIdx);
-    vec2 quadSize = vec2(extractSize(quad) * ivec2((cornerIdx>>1)&1, cornerIdx&1));
-    vec2 size = (quadSize + faceOffset) * (1<<lodLevel);
+    ivec2 quadSize = extractSize(quad);
+    vec2 respectiveQuadSize = vec2(quadSize * ivec2((cornerIdx>>1)&1, cornerIdx&1));
+    vec2 size = (respectiveQuadSize + faceOffset) * (1<<lodLevel);
 
     vec3 offset = vec3(size, (float(face&1) + getDepthOffset(faceData, face)) * (1<<lodLevel));
 
@@ -84,10 +85,13 @@ void main() {
     //TODO: make the face orientated by 2x3 so that division is not a integer div and modulo isnt needed
     // as these are very slow ops
     baseUV = modelUV + (vec2(face%3, face/3) * (1f/(vec2(3,2)*256f)));
-    uv = quadSize + faceOffset;//Add in the face offset for 0,0 uv
+    uv = respectiveQuadSize + faceOffset;//Add in the face offset for 0,0 uv
 
     discardAlpha = faceHasAlphaCuttout(faceData);
 
+    //We need to have a conditional override based on if the model size is < a full face + quadSize > 1
+    discardAlpha |= uint(any(greaterThan(quadSize, ivec2(1)))) & faceHasAlphaCuttoutOverride(faceData);
+
     //Compute lighting
     colourTinting = getLighting(extractLightId(quad));