From 2b071d9b09195a68464401d333ea6ab4d5bf3e62 Mon Sep 17 00:00:00 2001
From: goldislead <69987043+goldislead@users.noreply.github.com>
Date: Sun, 2 Aug 2026 10:05:00 -0700
Subject: [PATCH] [Vulkan] Invalidate user clip plane constants on source
 registers change

Co-authored-by: Herman S. <429230+has207@users.noreply.github.com>
---
 src/xenia/gpu/vulkan/vulkan_command_processor.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/xenia/gpu/vulkan/vulkan_command_processor.cc b/src/xenia/gpu/vulkan/vulkan_command_processor.cc
index 585b323a2..2ddfb57d3 100644
--- a/src/xenia/gpu/vulkan/vulkan_command_processor.cc
+++ b/src/xenia/gpu/vulkan/vulkan_command_processor.cc
@@ -1413,6 +1413,11 @@ void VulkanCommandProcessor::WriteRegister(uint32_t index, uint32_t value) {
     // staying stale from the first draw of the submission.
     current_constant_buffers_up_to_date_ &=
         ~(UINT32_C(1) << SpirvShaderTranslator::kConstantBufferTessellation);
+  } else if ((index >= XE_GPU_REG_PA_CL_UCP_0_X &&
+              index <= XE_GPU_REG_PA_CL_UCP_5_W) ||
+             index == XE_GPU_REG_PA_CL_CLIP_CNTL) {
+    current_constant_buffers_up_to_date_ &=
+        ~(UINT32_C(1) << SpirvShaderTranslator::kConstantBufferClipPlanes);
   }
 }
 void VulkanCommandProcessor::WriteRegistersFromMem(uint32_t start_index,