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Tsirkin" , Paolo Bonzini , Yiwei Zhang , Sergio Lopez Pascual Cc: Gert Wollny , qemu-devel@nongnu.org, Gurchetan Singh , Alyssa Ross , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Alex Deucher , Stefano Stabellini , =?UTF-8?q?Christian=20K=C3=B6nig?= , Xenia Ragiadakou , Honglei Huang , Julia Zhang , Chen Jiqian , Rob Clark , Robert Beckett Subject: [PATCH v18 06/19] ui/gdk: Unset context after GL operations Date: Wed, 18 Feb 2026 00:49:15 +0300 Message-ID: <20260217214928.2970885-7-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260217214928.2970885-1-dmitry.osipenko@collabora.com> References: <20260217214928.2970885-1-dmitry.osipenko@collabora.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=136.143.188.112; envelope-from=dmitry.osipenko@collabora.com; helo=sender4-pp-f112.zoho.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity dmitry.osipenko@collabora.com) X-ZM-MESSAGEID: 1771365194701158500 Content-Type: text/plain; charset="utf-8" VirtIO-GPU commands may be processed outside of main-loop, from a CPU thread. This results in GL context switch failure because context is held by main-loop thread when GL is invoked from CPU thread. Always release GL context after performing GL operations such that other threads could take over the context. Signed-off-by: Dmitry Osipenko --- ui/gtk-gl-area.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/ui/gtk-gl-area.c b/ui/gtk-gl-area.c index c709b2ce0f63..4d8ccb605f17 100644 --- a/ui/gtk-gl-area.c +++ b/ui/gtk-gl-area.c @@ -140,6 +140,8 @@ void gd_gl_area_draw(VirtualConsole *vc) surface_gl_setup_viewport(vc->gfx.gls, vc->gfx.ds, pw, ph); surface_gl_render_texture(vc->gfx.gls, vc->gfx.ds); } + + gdk_gl_context_clear_current(); } =20 void gd_gl_area_update(DisplayChangeListener *dcl, @@ -201,6 +203,8 @@ void gd_gl_area_refresh(DisplayChangeListener *dcl) vc->gfx.glupdates =3D 0; gtk_gl_area_queue_render(GTK_GL_AREA(vc->gfx.drawing_area)); } + + gdk_gl_context_clear_current(); } =20 void gd_gl_area_switch(DisplayChangeListener *dcl, @@ -227,6 +231,8 @@ void gd_gl_area_switch(DisplayChangeListener *dcl, if (resized) { gd_update_windowsize(vc); } + + gdk_gl_context_clear_current(); } =20 static int gd_cmp_gl_context_version(int major, int minor, QEMUGLParams *p= arams) @@ -325,6 +331,8 @@ void gd_gl_area_scanout_texture(DisplayChangeListener *= dcl, gtk_gl_area_set_scanout_mode(vc, true); egl_fb_setup_for_tex(&vc->gfx.guest_fb, backing_width, backing_height, backing_id, false); + + gdk_gl_context_clear_current(); } =20 void gd_gl_area_scanout_disable(DisplayChangeListener *dcl) @@ -378,6 +386,8 @@ void gd_gl_area_scanout_dmabuf(DisplayChangeListener *d= cl, if (qemu_dmabuf_get_allow_fences(dmabuf)) { vc->gfx.guest_fb.dmabuf =3D dmabuf; } + + gdk_gl_context_clear_current(); #endif } =20 @@ -389,6 +399,11 @@ void gtk_gl_area_init(void) int gd_gl_area_make_current(DisplayGLCtx *dgc, QEMUGLContext ctx) { - gdk_gl_context_make_current(ctx); + if (ctx) { + gdk_gl_context_make_current(ctx); + } else { + gdk_gl_context_clear_current(); + } + return 0; } --=20 2.52.0