[vk] unify VkSurfaceKHR with Android and the rest of platforms; remove technically incorrect nullptr() ctor for handles (#2971)

Removes some odd #ifdef-ing that just can use a shrimple opaque type.

Also removes nullptr() ctor'ing for vulkan handles and such; it's not incorrect per se like how `void *p = 0;` isn't incorrect, just that, y'know, any static analyzer will go "woah". Also there isn't any guarantee that handles `sizeof(Handle) == sizeof(void*)` so may as well :)

Signed-off-by: lizzie lizzie@eden-emu.dev

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2971
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>

4 files changed, 28 insertions, 25 deletions

diff --git a/src/video_core/vulkan_common/vulkan.h b/src/video_core/vulkan_common/vulkan.h
index 8d2e8e2a37..2cc0f0d7f0 100644
--- a/src/video_core/vulkan_common/vulkan.h
+++ b/src/video_core/vulkan_common/vulkan.h
@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
@@ -40,3 +40,6 @@
 #undef False
 #undef None
 #undef True
+
+// "Catch-all" handle for both Android and.. the rest of platforms
+struct VkSurfaceKHR_T;
diff --git a/src/video_core/vulkan_common/vulkan_device.cpp b/src/video_core/vulkan_common/vulkan_device.cpp
index a2ff3ee6ed..b51c57d380 100644
--- a/src/video_core/vulkan_common/vulkan_device.cpp
+++ b/src/video_core/vulkan_common/vulkan_device.cpp
@@ -419,7 +419,7 @@ Device::Device(VkInstance instance_, vk::PhysicalDevice physical_, VkSurfaceKHR
     : instance{instance_}, dld{dld_}, physical{physical_},
     format_properties(GetFormatProperties(physical)) {
     // Get suitability and device properties.
-    const bool is_suitable = GetSuitability(surface != nullptr);
+    const bool is_suitable = GetSuitability(surface != VkSurfaceKHR{});
 
     const VkDriverId driver_id = properties.driver.driverID;
 
diff --git a/src/video_core/vulkan_common/vulkan_surface.cpp b/src/video_core/vulkan_common/vulkan_surface.cpp
index dc65d3960a..761b7759c8 100644
--- a/src/video_core/vulkan_common/vulkan_surface.cpp
+++ b/src/video_core/vulkan_common/vulkan_surface.cpp
@@ -15,7 +15,7 @@ vk::SurfaceKHR CreateSurface(
     const vk::Instance& instance,
     [[maybe_unused]] const Core::Frontend::EmuWindow::WindowSystemInfo& window_info) {
     [[maybe_unused]] const vk::InstanceDispatch& dld = instance.Dispatch();
-    VkSurfaceKHR unsafe_surface = nullptr;
+    VkSurfaceKHR unsafe_surface = VkSurfaceKHR{};
 
 #ifdef _WIN32
     if (window_info.type == Core::Frontend::WindowSystemType::Windows) {
diff --git a/src/video_core/vulkan_common/vulkan_wrapper.h b/src/video_core/vulkan_common/vulkan_wrapper.h
index 5c04132f7b..872fbd858e 100644
--- a/src/video_core/vulkan_common/vulkan_wrapper.h
+++ b/src/video_core/vulkan_common/vulkan_wrapper.h
@@ -404,13 +404,13 @@ public:
 
     /// Construct a handle transferring the ownership from another handle.
     Handle(Handle&& rhs) noexcept
-        : handle{std::exchange(rhs.handle, nullptr)}, owner{rhs.owner}, dld{rhs.dld} {}
+        : handle{std::exchange(rhs.handle, Type{})}, owner{rhs.owner}, dld{rhs.dld} {}
 
     /// Assign the current handle transferring the ownership from another handle.
     /// Destroys any previously held object.
     Handle& operator=(Handle&& rhs) noexcept {
         Release();
-        handle = std::exchange(rhs.handle, nullptr);
+        handle = std::exchange(rhs.handle, Type{});
         owner = rhs.owner;
         dld = rhs.dld;
         return *this;
@@ -424,7 +424,7 @@ public:
     /// Destroys any held object.
     void reset() noexcept {
         Release();
-        handle = nullptr;
+        handle = Type{};
     }
 
     /// Returns the address of the held object.
@@ -440,7 +440,7 @@ public:
 
     /// Returns true when there's a held object.
     explicit operator bool() const noexcept {
-        return handle != nullptr;
+        return handle != Type{};
     }
 
 #ifndef ANDROID
@@ -455,7 +455,7 @@ public:
 #endif
 
 protected:
-    Type handle = nullptr;
+    Type handle{};
     OwnerType owner = nullptr;
     const Dispatch* dld = nullptr;
 
@@ -463,7 +463,7 @@ private:
     /// Destroys the held object if it exists.
     void Release() noexcept {
         if (handle) {
-            Destroy(owner, handle, *dld);
+            Destroy(OwnerType(owner), Type(handle), *dld);
         }
     }
 };
@@ -506,7 +506,7 @@ public:
     /// Destroys any held object.
     void reset() noexcept {
         Release();
-        handle = nullptr;
+        handle = {};
     }
 
     /// Returns the address of the held object.
@@ -522,7 +522,7 @@ public:
 
     /// Returns true when there's a held object.
     explicit operator bool() const noexcept {
-        return handle != nullptr;
+        return handle != Type{};
     }
 
 #ifndef ANDROID
@@ -537,7 +537,7 @@ public:
 #endif
 
 protected:
-    Type handle = nullptr;
+    Type handle{};
     const Dispatch* dld = nullptr;
 
 private:
@@ -607,7 +607,7 @@ private:
     std::unique_ptr<AllocationType[]> allocations;
     std::size_t num = 0;
     VkDevice device = nullptr;
-    PoolType pool = nullptr;
+    PoolType pool{};
     const DeviceDispatch* dld = nullptr;
 };
 
@@ -669,12 +669,12 @@ public:
     Image& operator=(const Image&) = delete;
 
     Image(Image&& rhs) noexcept
-        : handle{std::exchange(rhs.handle, nullptr)}, usage{rhs.usage}, owner{rhs.owner},
+        : handle{std::exchange(rhs.handle, VkImage{})}, usage{rhs.usage}, owner{rhs.owner},
           allocator{rhs.allocator}, allocation{rhs.allocation}, dld{rhs.dld} {}
 
     Image& operator=(Image&& rhs) noexcept {
         Release();
-        handle = std::exchange(rhs.handle, nullptr);
+        handle = std::exchange(rhs.handle, VkImage{});
         usage = rhs.usage;
         owner = rhs.owner;
         allocator = rhs.allocator;
@@ -693,11 +693,11 @@ public:
 
     void reset() noexcept {
         Release();
-        handle = nullptr;
+        handle = VkImage{};
     }
 
     explicit operator bool() const noexcept {
-        return handle != nullptr;
+        return handle != VkImage{};
     }
 
     void SetObjectNameEXT(const char* name) const;
@@ -709,7 +709,7 @@ public:
 private:
     void Release() const noexcept;
 
-    VkImage handle = nullptr;
+    VkImage handle{};
     VkImageUsageFlags usage{};
     VkDevice owner = nullptr;
     VmaAllocator allocator = nullptr;
@@ -730,13 +730,13 @@ public:
     Buffer& operator=(const Buffer&) = delete;
 
     Buffer(Buffer&& rhs) noexcept
-        : handle{std::exchange(rhs.handle, nullptr)}, owner{rhs.owner}, allocator{rhs.allocator},
+        : handle{std::exchange(rhs.handle, VkBuffer{})}, owner{rhs.owner}, allocator{rhs.allocator},
           allocation{rhs.allocation}, mapped{rhs.mapped},
           is_coherent{rhs.is_coherent}, dld{rhs.dld} {}
 
     Buffer& operator=(Buffer&& rhs) noexcept {
         Release();
-        handle = std::exchange(rhs.handle, nullptr);
+        handle = std::exchange(rhs.handle, VkBuffer{});
         owner = rhs.owner;
         allocator = rhs.allocator;
         allocation = rhs.allocation;
@@ -756,11 +756,11 @@ public:
 
     void reset() noexcept {
         Release();
-        handle = nullptr;
+        handle = VkBuffer{};
     }
 
     explicit operator bool() const noexcept {
-        return handle != nullptr;
+        return handle != VkBuffer{};
     }
 
     /// Returns the host mapped memory, an empty span otherwise.
@@ -786,7 +786,7 @@ public:
 private:
     void Release() const noexcept;
 
-    VkBuffer handle = nullptr;
+    VkBuffer handle{};
     VkDevice owner = nullptr;
     VmaAllocator allocator = nullptr;
     VmaAllocation allocation = nullptr;
@@ -1020,10 +1020,10 @@ public:
     [[nodiscard]] PipelineLayout CreatePipelineLayout(const VkPipelineLayoutCreateInfo& ci) const;
 
     [[nodiscard]] Pipeline CreateGraphicsPipeline(const VkGraphicsPipelineCreateInfo& ci,
-                                                  VkPipelineCache cache = nullptr) const;
+                                                  VkPipelineCache cache = {}) const;
 
     [[nodiscard]] Pipeline CreateComputePipeline(const VkComputePipelineCreateInfo& ci,
-                                                 VkPipelineCache cache = nullptr) const;
+                                                 VkPipelineCache cache = {}) const;
 
     [[nodiscard]] Sampler CreateSampler(const VkSamplerCreateInfo& ci) const;