Fixed culling?

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

@@ -77,8 +77,9 @@ public class RenderService<T extends AbstractSectionRenderer<J, ?>, J extends Vi
         world.getMapper().setBiomeCallback(this.modelService::addBiome);
 
         //this.nodeManager.insertTopLevelNode(WorldEngine.getWorldSectionId(0, 0,0,0));
-        //this.nodeManager.insertTopLevelNode(WorldEngine.getWorldSectionId(4, 0,0,0));
+        this.nodeManager.insertTopLevelNode(WorldEngine.getWorldSectionId(4, 0,0,0));
 
+        /*
         final int H_WIDTH = 10;
         for (int x = -H_WIDTH; x <= H_WIDTH; x++) {
             for (int y = 0; y <= 0; y++) {
@@ -86,7 +87,7 @@ public class RenderService<T extends AbstractSectionRenderer<J, ?>, J extends Vi
                     this.nodeManager.insertTopLevelNode(WorldEngine.getWorldSectionId(4, x, y, z));
                 }
             }
-        }
+        }*/
     }
 
     public void setup(Camera camera) {

src/main/java/me/cortex/voxy/client/core/rendering/post/PostProcessing.java

@@ -32,6 +32,7 @@ public class PostProcessing {
     private GlTexture colourSSAO;
     private GlTexture depthStencil;
     private boolean didSSAO;
+    private final FullscreenBlit setDepth0 = new FullscreenBlit("voxy:post/depth0.frag");
     private final FullscreenBlit emptyBlit = new FullscreenBlit("voxy:post/noop.frag");
     //private final FullscreenBlit blitTexture = new FullscreenBlit("voxy:post/blit_texture_cutout.frag");
     private final FullscreenBlit blitTexture = new FullscreenBlit("voxy:post/blit_texture_depth_cutout.frag");
@@ -93,6 +94,7 @@ public class PostProcessing {
         if (this.colour != null) this.colour.free();
         if (this.depthStencil != null) this.depthStencil.free();
         this.emptyBlit.delete();
+        this.setDepth0.delete();
         this.blitTexture.delete();
         this.ssaoComp.free();
     }
@@ -121,14 +123,16 @@ public class PostProcessing {
         this.emptyBlit.blit();
         glColorMask(true,true,true,true);
         glDepthMask(true);
+        //glDisable(GL_DEPTH_TEST);
+
+
+        glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
+        //Set depth to 0 w.r.t mask
+        glStencilFunc(GL_EQUAL, 0, 0xFF);
+        this.setDepth0.blit();
         glDisable(GL_DEPTH_TEST);
 
-        //Clear the depth buffer we copied cause else it will interfear with results (not really i think idk)
-        glClear(GL_DEPTH_BUFFER_BIT);
-
-
         //Make voxy terrain render only where there isnt mc terrain
-        glStencilOp(GL_KEEP, GL_KEEP, GL_KEEP);
         glStencilFunc(GL_EQUAL, 1, 0xFF);
 
 

src/main/java/me/cortex/voxy/client/core/rendering/util/HiZBuffer.java

@@ -74,6 +74,8 @@ public class HiZBuffer {
         glBindFramebuffer(GL_FRAMEBUFFER, this.fb.id);
 
         glDepthFunc(GL_ALWAYS);
+        glDepthMask(true);
+        glEnable(GL_DEPTH_TEST);
 
 
         //System.err.println("SRC: " + GlTexture.getRawTextureType(srcDepthTex) + " DST: " + this.texture.id);
@@ -100,6 +102,7 @@ public class HiZBuffer {
         glTextureParameteri(this.texture.id, GL_TEXTURE_MAX_LEVEL, this.levels-1);//TODO: CHECK IF ITS -1 or -0
 
         glDepthFunc(GL_LEQUAL);
+        glDisable(GL_DEPTH_TEST);
         glBindFramebuffer(GL_FRAMEBUFFER, boundFB);
         glViewport(0, 0, width, height);
         glBindVertexArray(0);

src/main/resources/assets/voxy/shaders/lod/hierarchical/screenspace.glsl

@@ -21,6 +21,7 @@ vec3 minBB;
 vec3 maxBB;
 vec2 size;
 
+uint lod;
 
 //Sets up screenspace with the given node id, returns true on success false on failure/should not continue
 //Accesses data that is setup in the main traversal and is just shared to here
@@ -34,7 +35,7 @@ void setupScreenspace(in UnpackedNode node) {
     vec3 point = VP*(((transform.transform*vec4((node.pos<<node.lodLevel) - transform.originPos.xyz, 1))
                     + (transform.worldPos.xyz-camChunkPos))-camSubChunk);
                     */
-
+    lod = node.lodLevel;
 
     vec4 base = VP*vec4(vec3(((node.pos<<node.lodLevel)-camSecPos)<<5)-camSubSecPos, 1);
 
@@ -48,7 +49,7 @@ void setupScreenspace(in UnpackedNode node) {
 
     for (int i = 1; i < 8; i++) {
         //NOTE!: cant this be precomputed and put in an array?? in the scene uniform??
-        vec4 pPoint = (VP*vec4(vec3((i&1)!=0,(i&2)!=0,(i&4)!=0),1))*(32<<node.lodLevel);//Size of section is 32x32x32 (need to change it to a bounding box in the future)
+        vec4 pPoint = (VP*vec4(vec3((i&1)!=0,(i&2)!=0,(i&4)!=0)*(32<<node.lodLevel),1));//Size of section is 32x32x32 (need to change it to a bounding box in the future)
         pPoint += base;
         vec3 point = pPoint.xyz/pPoint.w;
         //TODO: CLIP TO VIEWPORT
@@ -74,7 +75,6 @@ void setupScreenspace(in UnpackedNode node) {
 
 //Checks if the node is implicitly culled (outside frustum)
 bool outsideFrustum() {
-    printf("Cull point (%f %f %f)x(%f %f %f)", maxBB.x, maxBB.y, maxBB.z, minBB.x, minBB.y, minBB.z);
     return any(lessThanEqual(maxBB, vec3(0.0f, 0.0f, 0.0f))) || any(lessThanEqual(vec3(1.0f, 1.0f, 1.0f), minBB));
 }
 
@@ -85,11 +85,12 @@ bool isCulledByHiz() {
     vec2 ssize = size.xy * vec2(ivec2(screenW, screenH));
     float miplevel = ceil(log2(max(max(ssize.x, ssize.y),1)));
     vec2 midpoint = (maxBB.xy + minBB.xy)*0.5f;
-    return textureLod(hizDepthSampler, vec3(midpoint, minBB.z), miplevel) > 0.0001f;
+    //    printf("HiZ sample point culled: (%f,%f)@%f against %f", midpoint.x, midpoint.y, miplevel, minBB.z);
+    return textureLod(hizDepthSampler, vec3(midpoint, minBB.z), miplevel) < 0.0001f;
 }
 
 //Returns if we should decend into its children or not
 bool shouldDecend() {
-    printf("Screen area %f: %f, %f", (size.x*size.y*float(screenW)*float(screenH)), float(size.x), float(size.y));
+    //printf("Screen area %f: %f, %f", (size.x*size.y*float(screenW)*float(screenH)), float(size.x), float(size.y));
     return (size.x*size.y*screenW*screenH) > minSSS;
 }

src/main/resources/assets/voxy/shaders/lod/hierarchical/traversal_dev.comp

@@ -23,7 +23,7 @@ SIMPLE_QUEUE(uvec2, requestQueue, REQUEST_QUEUE_BINDING);
 SIMPLE_QUEUE(uint, renderQueue, RENDER_QUEUE_BINDING);
 
 void addRequest(inout UnpackedNode node) {
-    printf("Put node decend request");
+    //printf("Put node decend request");
     if (!hasRequested(node)) {
         if (requestQueueIndex.x < REQUEST_QUEUE_SIZE) {
             uint atomRes = atomicAdd(requestQueueIndex.x, 1);
@@ -59,17 +59,17 @@ void enqueueSelfForRender(in UnpackedNode node) {
 void traverse(in UnpackedNode node) {
     //Compute screenspace
     setupScreenspace(node);
-    debugDumpNode(node);
+    //debugDumpNode(node);
 
     if (outsideFrustum() || isCulledByHiz()) {
-        printf("culled");
+        //printf("culled");
     } else {
         //It is visible, TODO: maybe do a more detailed hiz test? (or make it so that )
 
         //Only decend if not a root node
         if (node.lodLevel!=0 && shouldDecend()) {
             if (hasChildren(node)) {
-                printf("A");
+                //printf("A");
                 enqueueChildren(node);
             } else {
                 printf("B");

src/main/resources/assets/voxy/shaders/post/depth0.frag

@@ -0,0 +1,7 @@
+#version 330 core
+out vec4 colour;
+in vec2 UV;
+void main() {
+    colour = vec4(1,0,1,1);
+    gl_FragDepth = 0.0f;
+}