fix chunks flickering for a single frame when unloading, log size of allocation on error

Author: MCRcortex

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

@@ -82,10 +82,10 @@ static GlBuffer getOrCreateGeometryBuffer() {
                     error = glGetError();
                     if (error != GL_NO_ERROR) {
                         buffer.free();
-                        throw new IllegalStateException("Unable to allocate geometry buffer using workaround, got gl error " + error);
+                        throw new IllegalStateException("Unable to allocate geometry buffer using workaround, got gl error " + error + ". Failed to allocate buffer of size "+capacity);
                     }
                 } else {
-                    throw new IllegalStateException("Unable to allocate geometry buffer, got gl error " + error);
+                    throw new IllegalStateException("Unable to allocate geometry buffer, got gl error " + error + ". Failed to allocate buffer of size "+capacity);
                 }
             }
             String extra = "";

src/main/java/me/cortex/voxy/client/mixin/sodium/MixinVisibleChunkCollector.java

@@ -3,11 +3,14 @@
 import me.cortex.voxy.client.core.IVoxyRenderSystemHolder;
 import me.cortex.voxy.commonImpl.VoxyCommon;
 import net.caffeinemc.mods.sodium.client.render.SodiumWorldRenderer;
+import net.caffeinemc.mods.sodium.client.render.chunk.LocalSectionIndex;
+import net.caffeinemc.mods.sodium.client.render.chunk.RenderSectionFlags;
 import net.caffeinemc.mods.sodium.client.render.chunk.lists.VisibleChunkCollector;
 import net.caffeinemc.mods.sodium.client.render.chunk.region.RenderRegion;
 import net.caffeinemc.mods.sodium.client.render.chunk.region.RenderRegionManager;
 import net.minecraft.core.SectionPos;
 import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Unique;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.Redirect;
@@ -28,9 +31,15 @@ public class MixinVisibleChunkCollector {
     private RenderRegion voxy$injectVisibleSectionGather(RenderRegionManager instance, int x, int y, int z) {
         var region = instance.getForChunk(x,y,z);
         var vrs = IVoxyRenderSystemHolder.getNullable();
-        if (vrs != null && region != null) {
+        if (vrs != null && voxy$shouldUseForChunkBound(region, LocalSectionIndex.pack(x, y, z))) {
             vrs.visbleSectionStream.put(SectionPos.asLong(x,y,z));
         }
         return region;
     }
+
+    @Unique
+    private static boolean voxy$shouldUseForChunkBound(RenderRegion region, int localIndex) {
+        if (region == null) return false;
+        return (region.getSectionFlags(localIndex)&RenderSectionFlags.MASK_IS_BUILT)!=0;
+    }
 }