From 49ffcc04a63c3b44c437241d3e63f6f3e72215bb Mon Sep 17 00:00:00 2001
From: yuzubot <yuzu@yuzu-emu.org>
Date: Fri, 3 Nov 2023 00:56:55 +0000
Subject: [PATCH] Merge PR 11943

---
 src/video_core/renderer_vulkan/vk_rasterizer.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/video_core/renderer_vulkan/vk_rasterizer.cpp b/src/video_core/renderer_vulkan/vk_rasterizer.cpp
index 059b7cb40..3983b2eb7 100644
--- a/src/video_core/renderer_vulkan/vk_rasterizer.cpp
+++ b/src/video_core/renderer_vulkan/vk_rasterizer.cpp
@@ -923,9 +923,13 @@ void RasterizerVulkan::UpdateDynamicStates() {
 }
 
 void RasterizerVulkan::HandleTransformFeedback() {
+    static std::once_flag warn_unsupported;
+
     const auto& regs = maxwell3d->regs;
     if (!device.IsExtTransformFeedbackSupported()) {
-        LOG_ERROR(Render_Vulkan, "Transform feedbacks used but not supported");
+        std::call_once(warn_unsupported, [&] {
+            LOG_ERROR(Render_Vulkan, "Transform feedbacks used but not supported");
+        });
         return;
     }
     query_cache.CounterEnable(VideoCommon::QueryType::StreamingByteCount,