From 17ddbb2240c4249deded483e536caeda10db1c77 Mon Sep 17 00:00:00 2001
From: CamilleLaVey <camillelavey99@gmail.com>
Date: Mon, 24 Nov 2025 11:52:18 -0400
Subject: [PATCH] [vk] Declaring features from Maintenance5

---
 src/video_core/vulkan_common/vulkan_device.cpp | 16 ++++++++++++++++
 src/video_core/vulkan_common/vulkan_device.h   | 18 ++++++++++++++++++
 2 files changed, 34 insertions(+)

diff --git a/src/video_core/vulkan_common/vulkan_device.cpp b/src/video_core/vulkan_common/vulkan_device.cpp
index c9779b22ba..fc22b90e3b 100644
--- a/src/video_core/vulkan_common/vulkan_device.cpp
+++ b/src/video_core/vulkan_common/vulkan_device.cpp
@@ -1121,6 +1121,11 @@ bool Device::GetSuitability(bool requires_swapchain) {
             VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_TRANSFORM_FEEDBACK_PROPERTIES_EXT;
         SetNext(next, properties.transform_feedback);
     }
+    if (extensions.maintenance5) {
+        properties.maintenance5.sType =
+            VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_MAINTENANCE_5_PROPERTIES_KHR;
+        SetNext(next, properties.maintenance5);
+    }
 
     // Perform the property fetch.
     physical.GetProperties2(properties2);
@@ -1409,6 +1414,17 @@ void Device::RemoveUnsuitableExtensions() {
 
     // VK_KHR_maintenance5
     extensions.maintenance5 = features.maintenance5.maintenance5;
+    
+    if (extensions.maintenance5) {
+        LOG_INFO(Render_Vulkan, "VK_KHR_maintenance5 properties: polygonModePointSize={} "
+                                "depthStencilSwizzleOne={} earlyFragmentTests={} nonStrictWideLines={}",
+                 properties.maintenance5.polygonModePointSize,
+                 properties.maintenance5.depthStencilSwizzleOneSupport,
+                 properties.maintenance5.earlyFragmentMultisampleCoverageAfterSampleCounting &&
+                 properties.maintenance5.earlyFragmentSampleMaskTestBeforeSampleCounting,
+                 properties.maintenance5.nonStrictWideLinesUseParallelogram);
+    }
+    
     RemoveExtensionFeatureIfUnsuitable(extensions.maintenance5, features.maintenance5,
                                        VK_KHR_MAINTENANCE_5_EXTENSION_NAME);
 
diff --git a/src/video_core/vulkan_common/vulkan_device.h b/src/video_core/vulkan_common/vulkan_device.h
index a30b0a5bc4..5b608a5c6a 100644
--- a/src/video_core/vulkan_common/vulkan_device.h
+++ b/src/video_core/vulkan_common/vulkan_device.h
@@ -796,6 +796,23 @@ public:
         return extensions.maintenance5;
     }
 
+    /// Returns true if polygon mode POINT supports gl_PointSize.
+    bool SupportsPolygonModePointSize() const {
+        return extensions.maintenance5 && properties.maintenance5.polygonModePointSize;
+    }
+
+    /// Returns true if depth/stencil swizzle ONE is supported.
+    bool SupportsDepthStencilSwizzleOne() const {
+        return extensions.maintenance5 && properties.maintenance5.depthStencilSwizzleOneSupport;
+    }
+
+    /// Returns true if early fragment tests optimizations are available.
+    bool SupportsEarlyFragmentTests() const {
+        return extensions.maintenance5 && 
+               properties.maintenance5.earlyFragmentMultisampleCoverageAfterSampleCounting &&
+               properties.maintenance5.earlyFragmentSampleMaskTestBeforeSampleCounting;
+    }
+
     /// Returns true if the device supports VK_KHR_maintenance6.
     bool IsKhrMaintenance6Supported() const {
         return extensions.maintenance6;
@@ -932,6 +949,7 @@ private:
         VkPhysicalDevicePushDescriptorPropertiesKHR push_descriptor{};
         VkPhysicalDeviceSubgroupSizeControlProperties subgroup_size_control{};
         VkPhysicalDeviceTransformFeedbackPropertiesEXT transform_feedback{};
+        VkPhysicalDeviceMaintenance5PropertiesKHR maintenance5{};
 
         VkPhysicalDeviceProperties properties{};
     };