From 4154787b514a2dded36189858a34cdb34f3574e6 Mon Sep 17 00:00:00 2001
From: CamilleLaVey <camillelavey99@gmail.com>
Date: Tue, 28 Jul 2026 01:55:25 -0400
Subject: [PATCH] [TEST] debug MSAA texture missing handling

---
 .../renderer_vulkan/vk_texture_cache.cpp      |  9 ++++++++-
 .../renderer_vulkan/vk_texture_cache.h        |  1 +
 .../vulkan_common/vulkan_device.cpp           | 19 +++++++++++++++++++
 3 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/src/video_core/renderer_vulkan/vk_texture_cache.cpp b/src/video_core/renderer_vulkan/vk_texture_cache.cpp
index b481c03013..cce454fa48 100644
--- a/src/video_core/renderer_vulkan/vk_texture_cache.cpp
+++ b/src/video_core/renderer_vulkan/vk_texture_cache.cpp
@@ -1643,7 +1643,14 @@ void TextureCacheRuntime::CopyImageMSAA(Image& dst, Image& src,
     const u32 num_samples = msaa_to_non_msaa ? src.info.num_samples : dst.info.num_samples;
     if (dst.AspectMask() != VK_IMAGE_ASPECT_COLOR_BIT ||
         VideoCore::Surface::IsPixelFormatInteger(dst.info.format)) {
-        UNIMPLEMENTED_MSG("Copying images with different samples is not supported.");
+        const u64 key{(static_cast<u64>(dst.AspectMask()) << 32) |
+                      static_cast<u64>(dst.info.format)};
+        if (unsupported_msaa_resolves.insert(key).second) {
+            LOG_WARNING(Render_Vulkan,
+                        "MSAA resolve unsupported: format={}, aspect={:#x}, samples {}->{}",
+                        dst.info.format, dst.AspectMask(), src.info.num_samples,
+                        dst.info.num_samples);
+        }
         return;
     }
     if (ENABLE_MSAA_RESOLVE_CONSUME && msaa_to_non_msaa && copies.size() == 1 &&
diff --git a/src/video_core/renderer_vulkan/vk_texture_cache.h b/src/video_core/renderer_vulkan/vk_texture_cache.h
index 41d9c38c70..90c9260873 100644
--- a/src/video_core/renderer_vulkan/vk_texture_cache.h
+++ b/src/video_core/renderer_vulkan/vk_texture_cache.h
@@ -168,6 +168,7 @@ public:
     std::array<vk::Buffer, indexing_slots> buffers{};
     std::vector<std::pair<u64, vk::Image>> pending_msaa_images;
     ankerl::unordered_dense::map<VkImage, ResolveShadow> resolve_shadows;
+    ankerl::unordered_dense::set<u64> unsupported_msaa_resolves;
 };
 
 class Framebuffer {
diff --git a/src/video_core/vulkan_common/vulkan_device.cpp b/src/video_core/vulkan_common/vulkan_device.cpp
index ef6093494d..3a9dbca6a4 100644
--- a/src/video_core/vulkan_common/vulkan_device.cpp
+++ b/src/video_core/vulkan_common/vulkan_device.cpp
@@ -745,6 +745,25 @@ Device::Device(VkInstance instance_, vk::PhysicalDevice physical_, VkSurfaceKHR
 
     vk::Check(vmaCreateAllocator(&allocator_info, &allocator));
 
+    {
+        const auto& limits = properties.properties.limits;
+        LOG_INFO(Render_Vulkan, "MSAA sample count support:");
+        LOG_INFO(Render_Vulkan, "  framebufferColorSampleCounts:   {:#x}",
+                 limits.framebufferColorSampleCounts);
+        LOG_INFO(Render_Vulkan, "  framebufferDepthSampleCounts:   {:#x}",
+                 limits.framebufferDepthSampleCounts);
+        LOG_INFO(Render_Vulkan, "  framebufferStencilSampleCounts: {:#x}",
+                 limits.framebufferStencilSampleCounts);
+        LOG_INFO(Render_Vulkan, "  sampledImageColorSampleCounts:  {:#x}",
+                 limits.sampledImageColorSampleCounts);
+        LOG_INFO(Render_Vulkan, "  sampledImageDepthSampleCounts:  {:#x}",
+                 limits.sampledImageDepthSampleCounts);
+        LOG_INFO(Render_Vulkan, "  sampledImageIntegerSampleCounts:{:#x}",
+                 limits.sampledImageIntegerSampleCounts);
+        LOG_INFO(Render_Vulkan, "  storageImageSampleCounts:       {:#x}",
+                 limits.storageImageSampleCounts);
+    }
+
     // Initialize GPU logging if enabled
     InitializeGPULogging();
 }