SDL: gpu/vulkan renderer: Reconfigure the window on renderer creation if it has the OpenGL flag

SDL Commits
1 
From e26370810b74c3d154d42092431242f457f9fb2b Mon Sep 17 00:00:00 2001
From: Frank Praznik <[EMAIL REDACTED]>
Date: Fri, 19 Jun 2026 13:29:13 -0400
Subject: [PATCH] gpu/vulkan renderer: Reconfigure the window on renderer
 creation if it has the OpenGL flag

In some cases, conflicts can occur at the platform or driver level if a window initially configured for OpenGL is then used with a Vulkan-based renderer. Try to reconfigure or recreate the window in the unlikely event that it has the OpenGL flag set when initializing the Vulkan or GPU renderer to remove any platform or driver-specific OpenGL objects and properties.
---
 src/render/gpu/SDL_render_gpu.c       | 8 ++++++++
 src/render/vulkan/SDL_render_vulkan.c | 7 +++++++
 2 files changed, 15 insertions(+)

diff --git a/src/render/gpu/SDL_render_gpu.c b/src/render/gpu/SDL_render_gpu.c
index 62184b2b312f8..4bee1a243671f 100644
--- a/src/render/gpu/SDL_render_gpu.c
+++ b/src/render/gpu/SDL_render_gpu.c
@@ -24,6 +24,7 @@
 
 #include "../../events/SDL_windowevents_c.h"
 #include "../../video/SDL_pixels_c.h"
+#include "../../video/SDL_sysvideo.h"
 #include "../SDL_d3dmath.h"
 #include "../SDL_sysrender.h"
 #include "SDL_gpu_util.h"
@@ -1745,6 +1746,13 @@ static bool GPU_CreateRenderer(SDL_Renderer *renderer, SDL_Window *window, SDL_P
 {
     GPU_RenderData *data = NULL;
 
+    // Clear any OpenGL properties on the window to avoid potential driver conflicts.
+    SDL_WindowFlags flags = SDL_GetWindowFlags(window);
+    if (flags & SDL_WINDOW_OPENGL) {
+        flags &= ~SDL_WINDOW_OPENGL;
+        SDL_ReconfigureWindow(window, flags);
+    }
+
     SDL_SetupRendererColorspace(renderer, create_props);
 
     if (renderer->output_colorspace != SDL_COLORSPACE_SRGB &&
diff --git a/src/render/vulkan/SDL_render_vulkan.c b/src/render/vulkan/SDL_render_vulkan.c
index 5bfce7e38fe85..077c4764122ef 100644
--- a/src/render/vulkan/SDL_render_vulkan.c
+++ b/src/render/vulkan/SDL_render_vulkan.c
@@ -4549,6 +4549,13 @@ static bool VULKAN_CreateRenderer(SDL_Renderer *renderer, SDL_Window *window, SD
 {
     VULKAN_RenderData *rendererData;
 
+    // Clear any OpenGL properties on the window to avoid potential driver conflicts.
+    SDL_WindowFlags flags = SDL_GetWindowFlags(window);
+    if (flags & SDL_WINDOW_OPENGL) {
+        flags &= ~SDL_WINDOW_OPENGL;
+        SDL_ReconfigureWindow(window, flags);
+    }
+
     SDL_SetupRendererColorspace(renderer, create_props);
 
     if (renderer->output_colorspace != SDL_COLORSPACE_SRGB &&