diff mbox series

[v1,1/6] ui/sdl2: Restore original context after new context creation

Message ID 20241006232350.3198759-2-dmitry.osipenko@collabora.com
State New
Headers show
Series Support virtio-gpu DRM native context | expand

Commit Message

Dmitry Osipenko Oct. 6, 2024, 11:23 p.m. UTC 
SDL API changes GL context to a newly created GL context, which differs
from other GL providers that don't switch context. Change SDL backend to
restore the original GL context. This allows Qemu's virtio-gpu to support
new virglrenderer async-fencing feature for Virgl context, otherwise it's
impossible for virglrenderer to switch GL context from a thread that waits
for async-fences.

Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
---
 ui/sdl2-gl.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

diff --git a/ui/sdl2-gl.c b/ui/sdl2-gl.c
index e01d9ab0c7bf..b1fe96d6af22 100644
--- a/ui/sdl2-gl.c
+++ b/ui/sdl2-gl.c
@@ -168,6 +168,9 @@  QEMUGLContext sdl2_gl_create_context(DisplayGLCtx *dgc,
                             SDL_GL_CONTEXT_PROFILE_ES);
         ctx = SDL_GL_CreateContext(scon->real_window);
     }
+
+    SDL_GL_MakeCurrent(scon->real_window, scon->winctx);
+
     return (QEMUGLContext)ctx;
 }