From 9f6b21638d396783809bbd941d4cf0d548122995 Mon Sep 17 00:00:00 2001
From: Valentin Popov <valentin@popov.link>
Date: Sat, 18 Jul 2026 08:59:28 +0400
Subject: feat(vulkan): select readback-capable swapchains

---
 adapters/fparkan-render-vulkan/src/ffi/smoke.rs | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'adapters/fparkan-render-vulkan/src/ffi/smoke.rs')

diff --git a/adapters/fparkan-render-vulkan/src/ffi/smoke.rs b/adapters/fparkan-render-vulkan/src/ffi/smoke.rs
index 4862ca0..0d5e6b4 100644
--- a/adapters/fparkan-render-vulkan/src/ffi/smoke.rs
+++ b/adapters/fparkan-render-vulkan/src/ffi/smoke.rs
@@ -241,6 +241,7 @@ impl VulkanSmokeRenderer {
                 enabled_extension_count: 0,
                 swapchain_extent: (0, 0),
                 swapchain_image_count: 0,
+                swapchain_image_usage: 0,
             },
         };
         renderer.rebuild_swapchain_resources(false)?;
@@ -268,6 +269,7 @@ impl VulkanSmokeRenderer {
                 .unwrap_or(u32::MAX),
             swapchain_extent: swapchain_ref.report.plan.extent,
             swapchain_image_count: swapchain_ref.report.image_count,
+            swapchain_image_usage: swapchain_ref.report.plan.image_usage,
         };
         Ok(renderer)
     }
@@ -571,11 +573,13 @@ impl VulkanSmokeRenderer {
         let frame_sync = create_frame_sync(device)?;
         let swapchain_extent = self.swapchain_ref()?.report.plan.extent;
         let swapchain_image_count = self.swapchain_ref()?.report.image_count;
+        let swapchain_image_usage = self.swapchain_ref()?.report.plan.image_usage;
         let resources = resources.commit();
         self.images_in_flight = vec![vk::Fence::null(); resources.image_views.len()];
         self.frame_sync = frame_sync;
         self.report.swapchain_extent = swapchain_extent;
         self.report.swapchain_image_count = swapchain_image_count;
+        self.report.swapchain_image_usage = swapchain_image_usage;
         self.swapchain_resources = Some(resources);
         Ok(())
     }
-- 
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