From 0c7421f36c8b241a9b4e6ddc45c031cc23e96b92 Mon Sep 17 00:00:00 2001
From: mcrcortex <18544518+MCRcortex@users.noreply.github.com>
Date: Mon, 21 Apr 2025 01:39:48 +1000
Subject: [PATCH] comment

---
 .../assets/voxy/shaders/lod/hierarchical/screenspace.glsl        | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/main/resources/assets/voxy/shaders/lod/hierarchical/screenspace.glsl b/src/main/resources/assets/voxy/shaders/lod/hierarchical/screenspace.glsl
index e9c14d70..f597acde 100644
--- a/src/main/resources/assets/voxy/shaders/lod/hierarchical/screenspace.glsl
+++ b/src/main/resources/assets/voxy/shaders/lod/hierarchical/screenspace.glsl
@@ -142,6 +142,7 @@ bool isCulledByHiz() {
     //Todo: replace with some rasterization, e.g. especially for request back to cpu
     //vec2 midpoint2 = clamp(midpoint, vec2(0), vec2(1));
     vec2 midpoint2 = midpoint;
+    //the *2.0f-1.0f converts from the 0->1 range to -1->1 range that depth is in
     bool culled = textureLod(hizDepthSampler, vec3(midpoint2, minBB.z*2.0f-1.0f), miplevel) < 0.0001f;//*0.5f+0.5f
     //printf("HiZ sample point: (%f,%f)@%f against %f", midpoint.x, midpoint.y, miplevel, minBB.z);
     //if ((culled) && node22.lodLevel == 0) {