From abba66ea10cf1e556adf98bc8f0dd02c47099eab Mon Sep 17 00:00:00 2001
From: Jake Turner <jake@evansturner.co.uk>
Date: Mon, 24 Jul 2023 07:17:13 +0100
Subject: [PATCH] GL Pixel History set preMod.depth before call to
 QueryPostModPerFragment

Copy the postMod depth to next history's preMod depth.
The preMode depth is used to prime the depth buffer in QueryPostModPerFragment.
---
 renderdoc/driver/gl/gl_pixelhistory.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/renderdoc/driver/gl/gl_pixelhistory.cpp b/renderdoc/driver/gl/gl_pixelhistory.cpp
index b4deb13f8..930652cb4 100644
--- a/renderdoc/driver/gl/gl_pixelhistory.cpp
+++ b/renderdoc/driver/gl/gl_pixelhistory.cpp
@@ -2165,6 +2165,12 @@ rdcarray<PixelModification> GLReplay::PixelHistory(rdcarray<EventUsage> events,
   QueryPrimitiveIdPerFragment(m_pDriver, this, resources, modEvents, x, flippedY, history,
                               eventFragments, usingFloatForPrimitiveId, textureDesc.msSamp,
                               sampleIdx);
+  // copy the postMod depth to next history's preMod depth
+  // (preMode depth is to prime the depth buffer in QueryPostModPerFragment)
+  for(size_t i = 1; i < history.size(); ++i)
+  {
+    history[i].preMod.depth = history[i - 1].postMod.depth;
+  }
   QueryPostModPerFragment(m_pDriver, this, resources, modEvents, x, flippedY, history,
                           eventFragments, textureDesc.msSamp, sampleIdx, textureWidth, textureHeight);