From 560ba41fa5f422d7c1008e8ed2e2b273850ab689 Mon Sep 17 00:00:00 2001
From: MCRcortex <18544518+MCRcortex@users.noreply.github.com>
Date: Mon, 10 Nov 2025 11:23:00 +1000
Subject: [PATCH] attempted fix for incorrect sampling of depth buffer stuffs

---
 .../cortex/voxy/client/core/AbstractRenderPipeline.java  | 9 ++++++++-
 .../cortex/voxy/client/core/IrisVoxyRenderPipeline.java  | 2 +-
 .../resources/assets/voxy/shaders/post/depth_copy.frag   | 3 ++-
 3 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/src/main/java/me/cortex/voxy/client/core/AbstractRenderPipeline.java b/src/main/java/me/cortex/voxy/client/core/AbstractRenderPipeline.java
index 74e5f981..7b63e779 100644
--- a/src/main/java/me/cortex/voxy/client/core/AbstractRenderPipeline.java
+++ b/src/main/java/me/cortex/voxy/client/core/AbstractRenderPipeline.java
@@ -53,6 +53,11 @@ public abstract class AbstractRenderPipeline extends TrackedObject {
     private final FullscreenBlit depthMaskBlit = new FullscreenBlit("voxy:post/fullscreen2.vert", "voxy:post/noop.frag");
     private final FullscreenBlit depthSetBlit = new FullscreenBlit("voxy:post/fullscreen2.vert", "voxy:post/depth0.frag");
     private final FullscreenBlit depthCopy = new FullscreenBlit("voxy:post/fullscreen2.vert", "voxy:post/depth_copy.frag");
+    private static final int DEPTH_SAMPLER = glGenSamplers();
+    static {
+        glSamplerParameteri(DEPTH_SAMPLER, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+        glSamplerParameteri(DEPTH_SAMPLER, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    }
 
     protected AbstractRenderPipeline(AsyncNodeManager nodeManager, NodeCleaner nodeCleaner, HierarchicalOcclusionTraverser traversal, BooleanSupplier frexSupplier) {
         this.frexStillHasWork = frexSupplier;
@@ -109,9 +114,11 @@ public abstract class AbstractRenderPipeline extends TrackedObject {
         // the mismatched formats in this case is the d32 to d24s8
         glBindFramebuffer(GL30.GL_FRAMEBUFFER, targetFb);
 
+        this.depthCopy.bind();
         int depthTexture = glGetNamedFramebufferAttachmentParameteri(sourceFrameBuffer, GL_DEPTH_ATTACHMENT, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME);
         glBindTextureUnit(0, depthTexture);
-
+        glBindSampler(0, DEPTH_SAMPLER);
+        glUniform2f(1,((float)width)/srcWidth, ((float)height)/srcHeight);
         glColorMask(false,false,false,false);
         this.depthCopy.blit();
 
diff --git a/src/main/java/me/cortex/voxy/client/core/IrisVoxyRenderPipeline.java b/src/main/java/me/cortex/voxy/client/core/IrisVoxyRenderPipeline.java
index 3a267c22..443d75d2 100644
--- a/src/main/java/me/cortex/voxy/client/core/IrisVoxyRenderPipeline.java
+++ b/src/main/java/me/cortex/voxy/client/core/IrisVoxyRenderPipeline.java
@@ -113,7 +113,7 @@ public class IrisVoxyRenderPipeline extends AbstractRenderPipeline {
             glClear(GL_COLOR_BUFFER_BIT);
         }
 
-        if (this.data.useViewportDims) {
+        if (!this.data.useViewportDims) {
             srcWidth = viewport.width;
             srcHeight = viewport.height;
         }
diff --git a/src/main/resources/assets/voxy/shaders/post/depth_copy.frag b/src/main/resources/assets/voxy/shaders/post/depth_copy.frag
index c43f07a0..56ab97b8 100644
--- a/src/main/resources/assets/voxy/shaders/post/depth_copy.frag
+++ b/src/main/resources/assets/voxy/shaders/post/depth_copy.frag
@@ -1,8 +1,9 @@
 #version 330 core
 
 layout(binding = 0) uniform sampler2D depthTex;
+layout(location = 1) uniform vec2 scaleFactor;
 
 in vec2 UV;
 void main() {
-    gl_FragDepth = texture(depthTex, UV).r;
+    gl_FragDepth = texture(depthTex, UV*scaleFactor).r;
 }
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