From patchwork Thu Nov 9 13:59:23 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Michael Tokarev X-Patchwork-Id: 1862097 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4SR3pH5hVdz1yRQ for ; Fri, 10 Nov 2023 01:13:27 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1r15gk-0008S1-Ri; Thu, 09 Nov 2023 09:07:19 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1r15eI-0001EE-3q; Thu, 09 Nov 2023 09:04:46 -0500 Received: from isrv.corpit.ru ([86.62.121.231]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1r15eD-0007LQ-Hz; Thu, 09 Nov 2023 09:04:43 -0500 Received: from tsrv.corpit.ru (tsrv.tls.msk.ru [192.168.177.2]) by isrv.corpit.ru (Postfix) with ESMTP id 607AD31BEF; Thu, 9 Nov 2023 16:59:58 +0300 (MSK) Received: from tls.msk.ru (mjt.wg.tls.msk.ru [192.168.177.130]) by tsrv.corpit.ru (Postfix) with SMTP id 6A5F034526; Thu, 9 Nov 2023 16:59:50 +0300 (MSK) Received: (nullmailer pid 1462946 invoked by uid 1000); Thu, 09 Nov 2023 13:59:47 -0000 From: Michael Tokarev To: qemu-devel@nongnu.org Cc: qemu-stable@nongnu.org, Antonio Caggiano , =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , Michael Tokarev Subject: [Stable-7.2.7 55/62] ui/gtk-egl: Check EGLSurface before doing scanout Date: Thu, 9 Nov 2023 16:59:23 +0300 Message-Id: <20231109135933.1462615-55-mjt@tls.msk.ru> X-Mailer: git-send-email 2.39.2 In-Reply-To: References: MIME-Version: 1.0 Received-SPF: pass client-ip=86.62.121.231; envelope-from=mjt@tls.msk.ru; helo=isrv.corpit.ru X-Spam_score_int: -68 X-Spam_score: -6.9 X-Spam_bar: ------ X-Spam_report: (-6.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_HI=-5, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Antonio Caggiano The first time gd_egl_scanout_texture() is called, there's a possibility that the GTK drawing area might not be realized yet, in which case its associated GdkWindow is NULL. This means gd_egl_init() was also skipped and the EGLContext and EGLSurface stored in the VirtualGfxConsole are not valid yet. Continuing with the scanout in this conditions would result in hitting an assert in libepoxy: "Couldn't find current GLX or EGL context". A possible workaround is to just ignore the scanout request, giving the the GTK drawing area some time to finish its realization. At that point, the gd_egl_init() will succeed and the EGLContext and EGLSurface stored in the VirtualGfxConsole will be valid. Signed-off-by: Antonio Caggiano Reviewed-by: Marc-André Lureau Message-Id: <20231016123215.2699269-1-quic_acaggian@quicinc.com> (cherry picked from commit 6f189a08c1b0085808af1bfbf4567f0da193ecc1) Signed-off-by: Michael Tokarev diff --git a/ui/gtk-egl.c b/ui/gtk-egl.c index 52c6246a33..17755b1185 100644 --- a/ui/gtk-egl.c +++ b/ui/gtk-egl.c @@ -234,12 +234,19 @@ void gd_egl_scanout_texture(DisplayChangeListener *dcl, vc->gfx.h = h; vc->gfx.y0_top = backing_y_0_top; - eglMakeCurrent(qemu_egl_display, vc->gfx.esurface, - vc->gfx.esurface, vc->gfx.ectx); + if (!vc->gfx.esurface) { + gd_egl_init(vc); + if (!vc->gfx.esurface) { + return; + } - gtk_egl_set_scanout_mode(vc, true); - egl_fb_setup_for_tex(&vc->gfx.guest_fb, backing_width, backing_height, - backing_id, false); + eglMakeCurrent(qemu_egl_display, vc->gfx.esurface, + vc->gfx.esurface, vc->gfx.ectx); + + gtk_egl_set_scanout_mode(vc, true); + egl_fb_setup_for_tex(&vc->gfx.guest_fb, backing_width, backing_height, + backing_id, false); + } } void gd_egl_scanout_dmabuf(DisplayChangeListener *dcl,