From 377280eadaf956043e0c67e45668ca2fac0cd1ba Mon Sep 17 00:00:00 2001
From: Jake Turner <jake@evansturner.co.uk>
Date: Fri, 3 Oct 2025 18:20:10 +0100
Subject: [PATCH] Op::ImageRead does not have to be in lockstep

It does not require derivatives
---
 renderdoc/driver/shaders/spirv/spirv_debug.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/renderdoc/driver/shaders/spirv/spirv_debug.cpp b/renderdoc/driver/shaders/spirv/spirv_debug.cpp
index 821aa8c50..df529d556 100644
--- a/renderdoc/driver/shaders/spirv/spirv_debug.cpp
+++ b/renderdoc/driver/shaders/spirv/spirv_debug.cpp
@@ -5423,6 +5423,9 @@ bool ThreadState::CanRunAnotherStep() const
     case Op::ImageSampleProjImplicitLod:
     case Op::ImageSampleProjDrefExplicitLod:
     case Op::ImageSampleProjDrefImplicitLod: return false;
+    case Op::ImageRead:
+      // ImageRead does not require derivatives, does not have to be in lockstep
+      return true;
     // derivatives require threads in the tangle to be in lockstep
     case Op::DPdx:
     case Op::DPdy: