Pain

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

@@ -1,6 +1,9 @@
 package me.cortex.voxy.client.core;
 
+import me.cortex.voxy.client.core.gl.shader.Shader;
+import me.cortex.voxy.client.core.gl.shader.ShaderType;
 import org.lwjgl.opengl.GL;
+import org.lwjgl.opengl.GL20C;
 
 public class Capabilities {
 
@@ -11,6 +14,28 @@ public class Capabilities {
     public Capabilities() {
         var cap = GL.getCapabilities();
         this.meshShaders = cap.GL_NV_mesh_shader && cap.GL_NV_representative_fragment_test;
-        this.INT64_t = cap.GL_ARB_gpu_shader_int64 || cap.GL_AMD_gpu_shader_int64;
+        //this.INT64_t = cap.GL_ARB_gpu_shader_int64 || cap.GL_AMD_gpu_shader_int64;
+        //The only reliable way to test for int64 support is to try compile a shader
+        this.INT64_t = testShaderCompilesOk(ShaderType.COMPUTE, """
+                #version 430
+                #extension GL_ARB_gpu_shader_int64 : require
+                layout(local_size_x=32) in;
+                void main() {
+                    uint64_t a = 1234;
+                }
+                """);
+    }
+
+    public static void init() {
+    }
+
+    private static boolean testShaderCompilesOk(ShaderType type, String src) {
+        int shader = GL20C.glCreateShader(type.gl);
+        GL20C.glShaderSource(shader, src);
+        GL20C.glCompileShader(shader);
+        int result = GL20C.glGetShaderi(shader, GL20C.GL_COMPILE_STATUS);
+        GL20C.glDeleteShader(shader);
+
+        return result == GL20C.GL_TRUE;
     }
 }

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

@@ -68,6 +68,7 @@ public class VoxelCore {
 
         //Trigger the shared index buffer loading
         SharedIndexBuffer.INSTANCE.id();
+        Capabilities.init();//Ensure clinit is called
         this.renderer = this.createRenderBackend();
         this.viewportSelector = new ViewportSelector<>(this.renderer::createViewport);
         System.out.println("Renderer initialized");

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

@@ -94,6 +94,7 @@ public class HiZBuffer {
         this.texture.free();
         this.texture = null;
         glDeleteSamplers(this.sampler);
+        this.hiz.free();
     }
 
     public int getHizTextureId() {

src/main/java/me/cortex/voxy/client/saver/ContextSelectionSystem.java

@@ -79,6 +79,9 @@ public class ContextSelectionSystem {
             } catch (Exception e) {
                 throw new RuntimeException("Failed to deserialize the default config, aborting!", e);
             }
+            if (this.config == null) {
+                throw new IllegalStateException("Config is still null");
+            }
         }
 
         public StorageBackend createStorageBackend() {

src/main/resources/assets/voxy/shaders/lod/gl46mesh/meshletculler.comp

@@ -63,7 +63,7 @@ void main() {
     PosHeader pos   = geometryPool[meshletId*MESHLET_SIZE];
     AABBHeader aabb = geometryPool[meshletId*MESHLET_SIZE+1];
 
-    if (testHiZ(pos, aabb)) {//If didnt cull, insert it back into the stream
+    if (testHiZ(pos, aabb) || true) {//If didnt cull, insert it back into the stream
         meshlets[atomicAdd(drawCmd.instanceCount, 1)+fullMeshletCount] = meshletId;
     }
 }

src/main/resources/assets/voxy/shaders/lod/gl46mesh/quads.frag

@@ -19,7 +19,7 @@ void main() {
     //vec4 colour = solidColour;
     vec4 colour = texture(blockModelAtlas, uv + baseUV, ((flags>>1)&1u)*-4.0);
     if ((flags&1u) == 1 && colour.a <= 0.25f) {
-        //discard;
+        discard;
     }
 
     //Conditional tinting, TODO: FIXME: REPLACE WITH MASK OR SOMETHING, like encode data into the top bit of alpha