{"id":2221539,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2221539/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260409144639.3610-1-benno.fuenfstueck@neodyme.io/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/1.1/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20260409144639.3610-1-benno.fuenfstueck@neodyme.io>","date":"2026-04-09T14:46:39","name":"virtio-gpu: fix inverted mouse cursor","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"a4a487603b507d4f9c937b29971fc3f3162bb17a","submitter":{"id":93105,"url":"http://patchwork.ozlabs.org/api/1.1/people/93105/?format=json","name":"Benno Fünfstück","email":"benno.fuenfstueck@neodyme.io"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260409144639.3610-1-benno.fuenfstueck@neodyme.io/mbox/","series":[{"id":499333,"url":"http://patchwork.ozlabs.org/api/1.1/series/499333/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=499333","date":"2026-04-09T14:46:39","name":"virtio-gpu: fix inverted mouse cursor","version":1,"mbox":"http://patchwork.ozlabs.org/series/499333/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2221539/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2221539/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=neodyme.io header.i=@neodyme.io header.a=rsa-sha256\n header.s=google header.b=YjjEklQO;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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Tsirkin\" ,\n =?utf-8?q?Alex_Benn=C3=A9e?= ,\n Akihiko Odaki ,\n Dmitry Osipenko , =?utf-8?b?QmVubm8gRsO8bmZz?=\n\t=?utf-8?b?dMO8Y2s=?= ","Subject":"[PATCH] virtio-gpu: fix inverted mouse cursor","Date":"Thu, 9 Apr 2026 16:46:39 +0200","Message-ID":"<20260409144639.3610-1-benno.fuenfstueck@neodyme.io>","X-Mailer":"git-send-email 2.53.0","MIME-Version":"1.0","Content-Type":"text/plain; charset=\"UTF-8\"","Content-Transfer-Encoding":"quoted-printable","Received-SPF":"pass client-ip=2a00:1450:4864:20::331;\n envelope-from=benno.fuenfstueck@neodyme.io; helo=mail-wm1-x331.google.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,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001,\n SPF_PASS=-0.001 autolearn=ham autolearn_force=no","X-Spam_action":"no action","X-Mailman-Approved-At":"Thu, 09 Apr 2026 13:26:29 -0400","X-BeenThere":"qemu-devel@nongnu.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"qemu development ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"},"content":"From: Benno Fünfstück \n\nWhen using virtio-gpu-gl, if the guest uses hardware mouse cursor acceleration then the mouse cursor can end up being a resource with the flag Y_0_TOP set. In this case, we need to make sure to flip the cursor data such that display clients render it correctly.\n\nFor example, this fixes mouse cursor rendering for wlroots-based window managers (like Sway) in Linux guests.\n\nResolves: https://gitlab.com/qemu-project/qemu/-/work_items/2315\nSigned-off-by: Benno Fünfstück \n---\n hw/display/virtio-gpu-gl.c | 20 +++++++++++++++++++-\n 1 file changed, 19 insertions(+), 1 deletion(-)","diff":"diff --git a/hw/display/virtio-gpu-gl.c b/hw/display/virtio-gpu-gl.c\nindex 2b7a41c466..4562d3405e 100644\n--- a/hw/display/virtio-gpu-gl.c\n+++ b/hw/display/virtio-gpu-gl.c\n@@ -33,6 +33,9 @@ static void virtio_gpu_gl_update_cursor_data(VirtIOGPU *g,\n VirtIOGPUGL *gl = VIRTIO_GPU_GL(g);\n uint32_t width, height;\n uint32_t pixels, *data;\n+ bool y_0_top = true;\n+ int ret;\n+ struct virgl_renderer_resource_info info;\n \n if (gl->renderer_state != RS_INITED) {\n return;\n@@ -49,8 +52,23 @@ static void virtio_gpu_gl_update_cursor_data(VirtIOGPU *g,\n return;\n }\n \n+ memset(&info, 0, sizeof(info));\n+ ret = virgl_renderer_resource_get_info(resource_id, &info);\n+ if (ret == 0) {\n+ y_0_top = info.flags & VIRTIO_GPU_RESOURCE_FLAG_Y_0_TOP;\n+ }\n+\n pixels = s->current_cursor->width * s->current_cursor->height;\n- memcpy(s->current_cursor->data, data, pixels * sizeof(uint32_t));\n+ if (y_0_top) {\n+ memcpy(s->current_cursor->data, data, pixels * sizeof(uint32_t));\n+ } else {\n+ uint32_t *dst = s->current_cursor->data;\n+ for (uint32_t y = 0; y < height; y++) {\n+ memcpy(dst + y * width,\n+ data + (height - 1 - y) * width,\n+ width * sizeof(uint32_t));\n+ }\n+ }\n free(data);\n }\n \n","prefixes":[]}