From 0bf8ccfb60b828ec6e3451efbf307c45336000da Mon Sep 17 00:00:00 2001
From: Ethan Lee <[EMAIL REDACTED]>
Date: Tue, 8 Feb 2022 22:15:11 -0500
Subject: [PATCH] video: Add a hint to allow Vulkan surfaces on foreign windows
---
include/SDL_hints.h | 11 +++++++++++
src/video/SDL_video.c | 10 ++++++++++
2 files changed, 21 insertions(+)
diff --git a/include/SDL_hints.h b/include/SDL_hints.h
index 384320e0665..ec228fb27fd 100644
--- a/include/SDL_hints.h
+++ b/include/SDL_hints.h
@@ -1453,6 +1453,17 @@ extern "C" {
*/
#define SDL_HINT_VIDEO_WINDOW_SHARE_PIXEL_FORMAT "SDL_VIDEO_WINDOW_SHARE_PIXEL_FORMAT"
+/**
+ * \brief When calling SDL_CreateWindowFrom(), make the window compatible with Vulkan.
+ *
+ * This variable can be set to the following values:
+ * "0" - Don't add any graphics flags to the SDL_WindowFlags
+ * "1" - Add SDL_WINDOW_VULKAN to the SDL_WindowFlags
+ *
+ * By default SDL will not make the foreign window compatible with Vulkan.
+ */
+#define SDL_HINT_VIDEO_FOREIGN_WINDOW_VULKAN "SDL_VIDEO_FOREIGN_WINDOW_VULKAN"
+
/**
* \brief A variable specifying which shader compiler to preload when using the Chrome ANGLE binaries
*
diff --git a/src/video/SDL_video.c b/src/video/SDL_video.c
index 2648c44c6e4..6fd668c8d47 100644
--- a/src/video/SDL_video.c
+++ b/src/video/SDL_video.c
@@ -1703,6 +1703,16 @@ SDL_CreateWindowFrom(const void *data)
}
_this->windows = window;
+#if SDL_VIDEO_VULKAN
+ if (SDL_GetHintBoolean(SDL_HINT_VIDEO_FOREIGN_WINDOW_VULKAN, SDL_FALSE)) {
+ window->flags |= SDL_WINDOW_VULKAN;
+ if (SDL_Vulkan_LoadLibrary(NULL) < 0) {
+ SDL_DestroyWindow(window);
+ return NULL;
+ }
+ }
+#endif
+
if (_this->CreateSDLWindowFrom(_this, window, data) < 0) {
SDL_DestroyWindow(window);
return NULL;