From 9f502500a282f6b6a7bda1bbd2b0230ddab48ede Mon Sep 17 00:00:00 2001
From: The Stickmahn <thestickmahn@proton.me>
Date: Sat, 30 May 2026 16:16:55 +0200
Subject: [PATCH] Added Windows support (untested though, sorry)

Added Windows support for WGPU, although it is untested since I don't
have a Windows machine to test it on.
---
 src/video/SDL_wgpu_defs.h           |  6 ++++
 src/video/windows/SDL_windowswgpu.c | 52 +++++++++++++++++++++++++++++
 src/video/windows/SDL_windowswgpu.h | 12 +++++++
 3 files changed, 70 insertions(+)
 create mode 100644 src/video/windows/SDL_windowswgpu.c
 create mode 100644 src/video/windows/SDL_windowswgpu.h

diff --git a/src/video/SDL_wgpu_defs.h b/src/video/SDL_wgpu_defs.h
index 19a584b357..72c2018485 100644
--- a/src/video/SDL_wgpu_defs.h
+++ b/src/video/SDL_wgpu_defs.h
@@ -96,6 +96,12 @@ typedef struct WGPUSurfaceSourceXlibWindow {
     uint64_t window;
 } WGPUSurfaceSourceXlibWindow;
 
+typedef struct WGPUSurfaceSourceWindowsHWND {
+    WGPUChainedStruct chain;
+    void * hinstance;
+    void * hwnd;
+} WGPUSurfaceSourceWindowsHWND;
+
 typedef WGPUSurface (*WGPUProcInstanceCreateSurface)(WGPUInstance instance, WGPUSurfaceDescriptor const *descriptor) WGPU_FUNCTION_ATTRIBUTE;
 
 #if defined(WGPU_STATIC)
diff --git a/src/video/windows/SDL_windowswgpu.c b/src/video/windows/SDL_windowswgpu.c
new file mode 100644
index 0000000000..6b1cba111d
--- /dev/null
+++ b/src/video/windows/SDL_windowswgpu.c
@@ -0,0 +1,52 @@
+
+#include "SDL_internal.h"
+
+#if defined(SDL_VIDEO_WGPU) && defined(SDL_VIDEO_DRIVER_WINDOWS)
+#include "SDL_windowsvideo.h"
+
+#include "../SDL_wgpu_defs.h"
+#include "SDL_windoiwswgpu.h"
+
+WGPUSurface WIN_WGPU_CreateSurface(SDL_VideoDevice *_this, SDL_Window *window, WGPUInstance instance)
+{
+    SDL_PropertiesID windowProperties = SDL_GetWindowProperties(window);
+
+    void *hwnd = SDL_GetPointerProperty(windowProperties, SDL_PROP_WINDOW_WIN32_HWND_POINTER, 0);
+    void *hinstance = SDL_GetPointerProperty(windowProperties, SDL_PROP_WINDOW_WIN32_INSTANCE_POINTER, 0);
+
+    WGPUSurfaceDescriptor desc;
+    WGPUSurfaceSourceWindowsHWND source;
+
+    source.hwnd = hwnd;
+    source.hinstance = hinstance;
+    source.chain.sType = WGPUSType_SurfaceSourceXlibWindow;
+    source.chain.next = NULL;
+
+    desc.label = (WGPUStringView){ NULL, WGPU_STRLEN };
+    desc.nextInChain = &source.chain;
+
+#if defined(WGPU_STATIC)
+    return wgpuInstanceCreateSurface(instance, &desc);
+#else
+    SDL_SharedObject *wgpuLib = SDL_LoadObject("libwgpu_native.so");
+
+    if (wgpuLib == NULL) {
+        SDL_SetError("Failed to load wgpu-native shared library 'libwgpu_native.so'");
+        goto fail;
+    }
+
+    WGPUProcInstanceCreateSurface proc = (WGPUProcInstanceCreateSurface)SDL_LoadFunction(wgpuLib, "wgpuInstanceCreateSurface");
+
+    if (proc == NULL) {
+        SDL_SetError("Failed to load function 'wgpuInstanceCreateSurface' from loaded wgpu-native library!");
+        goto fail;
+    }
+
+    return proc(instance, &desc);
+fail:
+    SDL_LogError(SDL_LOG_CATEGORY_VIDEO, "Failed to create WGPU surface: %s", SDL_GetError());
+    return NULL;
+#endif
+}
+
+#endif
diff --git a/src/video/windows/SDL_windowswgpu.h b/src/video/windows/SDL_windowswgpu.h
new file mode 100644
index 0000000000..be899ec27f
--- /dev/null
+++ b/src/video/windows/SDL_windowswgpu.h
@@ -0,0 +1,12 @@
+// NOTE: I don't have a Windows machine to test this on. - TheStickmahn
+
+#ifndef SDL_windowswgpu_h_
+#define SDL_windowswgpu_h_
+
+#include <SDL3/SDL_wgpu.h>
+
+#if defined(SDL_VIDEO_WGPU) && defined(SDL_VIDEO_DRIVER_WINDOWS)
+extern WGPUSurface WIN_WGPU_CreateSurface(SDL_VSDL_VideoDevice *_this, SDL_Window *window, WGPUInstance instance);
+#endif
+
+#endif // SDL_windowswgpu_h_