From 4a49e2bb31d83ca5c4d20ae9a828daecf99a9dd9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marcin=20Miko=C5=82ajczyk?= <marcinmikolajcz@gmail.com>
Date: Tue, 27 May 2025 18:03:38 +0100
Subject: [PATCH] Include a barrier for conditional rendering read

---
 src/video_core/renderer_vulkan/vk_rasterizer.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/video_core/renderer_vulkan/vk_rasterizer.cpp b/src/video_core/renderer_vulkan/vk_rasterizer.cpp
index e6ca0d546..63cbbb2b5 100644
--- a/src/video_core/renderer_vulkan/vk_rasterizer.cpp
+++ b/src/video_core/renderer_vulkan/vk_rasterizer.cpp
@@ -1309,8 +1309,17 @@ void Rasterizer::StartPredication(VAddr addr, bool draw_if_visible, bool wait_fo
         .offset = index * sizeof(u32),
         .size = sizeof(u32),
     };
+
+    const vk::MemoryBarrier2 ib_barrier{
+        .srcStageMask = vk::PipelineStageFlagBits2::eCopy,
+        .srcAccessMask = vk::AccessFlagBits2::eTransferWrite,
+        .dstStageMask = vk::PipelineStageFlagBits2::eConditionalRenderingEXT,
+        .dstAccessMask = vk::AccessFlagBits2::eConditionalRenderingReadEXT,
+    };
     cmdbuf.pipelineBarrier2(vk::DependencyInfo{
         .dependencyFlags = vk::DependencyFlagBits::eByRegion,
+        .memoryBarrierCount = 1,
+        .pMemoryBarriers = &ib_barrier,
         .bufferMemoryBarrierCount = 1,
         .pBufferMemoryBarriers = &pre_barrier,
     });