From 3ef408b5b4a233ed1fe9eb30a021ba0c71c4cb37 Mon Sep 17 00:00:00 2001
From: Julian Orth <ju.orth@gmail.com>
Date: Tue, 10 Feb 2026 18:30:39 +0100
Subject: [PATCH] vulkan: log information about mixed device use

---
 src/gfx_apis/vulkan/image.rs    |  2 +-
 src/gfx_apis/vulkan/renderer.rs | 12 ++++++++++++
 src/renderer/renderer_base.rs   |  3 +++
 3 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/src/gfx_apis/vulkan/image.rs b/src/gfx_apis/vulkan/image.rs
index 21dd6290..45da6861 100644
--- a/src/gfx_apis/vulkan/image.rs
+++ b/src/gfx_apis/vulkan/image.rs
@@ -101,7 +101,7 @@ pub enum QueueTransfer {
 pub enum VulkanImageMemory {
     DmaBuf(VulkanDmaBufImage),
     Internal(VulkanShmImage),
-    Blend(#[expect(dead_code)] VulkanAllocation),
+    Blend(VulkanAllocation),
 }
 
 pub struct VulkanDmaBufImage {
diff --git a/src/gfx_apis/vulkan/renderer.rs b/src/gfx_apis/vulkan/renderer.rs
index cdb88bcc..29a983a2 100644
--- a/src/gfx_apis/vulkan/renderer.rs
+++ b/src/gfx_apis/vulkan/renderer.rs
@@ -2117,6 +2117,18 @@ impl Debug for VulkanRenderer {
 impl VulkanImage {
     fn assert_device(&self, device: &Device) -> Result<(), VulkanError> {
         if self.renderer.device.device.handle() != device.handle() {
+            match &self.ty {
+                VulkanImageMemory::DmaBuf(v) => {
+                    log::warn!("Mixed device use with dmabuf {}", v.template.dmabuf.id);
+                }
+                VulkanImageMemory::Internal(_v) => {
+                    log::warn!("Mixed device use with internal image");
+                }
+                VulkanImageMemory::Blend(_v) => {
+                    log::warn!("Mixed device use with blend buffer");
+                }
+            }
+            log::info!("Image address {:?}", ptr::from_ref(self));
             return Err(VulkanError::MixedVulkanDeviceUse);
         }
         Ok(())
diff --git a/src/renderer/renderer_base.rs b/src/renderer/renderer_base.rs
index 4d544998..962c18db 100644
--- a/src/renderer/renderer_base.rs
+++ b/src/renderer/renderer_base.rs
@@ -182,6 +182,9 @@ impl RendererBase<'_> {
         opaque: bool,
         cd: &Rc<ColorDescription>,
     ) {
+        // log::info!("rendering texture {:?}", std::ptr::from_ref(&**texture) as *const u8);
+        // log::info!("{:?}", backtrace::Backtrace::new());
+
         let mut texcoord = tpoints.unwrap_or_else(SampleRect::identity);
 
         let (twidth, theight) = if let Some(size) = tsize {