** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** from this software without specific prior written permission. ** contributors may be used to endorse or promote products derived ** * Neither the name of The Qt Company Ltd nor the names of its ** the documentation and/or other materials provided with the ** notice, this list of conditions and the following disclaimer in ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions of source code must retain the above copyright ** modification, are permitted provided that the following conditions are ** "Redistribution and use in source and binary forms, with or without ** Alternatively, you may use this file under the terms of the BSD license ** a written agreement between you and The Qt Company. ** Software or, alternatively, in accordance with the terms contained in ** accordance with the commercial license agreement provided with the ** Licensees holding valid commercial Qt licenses may use this file in ** This file is part of the QtCanvas3D module of the Qt Toolkit. ** Copyright (C) 2016 The Qt Company Ltd. I based my testcase on the textureandlight sample app bundled with Qt. GPU: Mobile Intel(R) 4 Series Express Chipset Family.Platform note: This has been tested only on one PC, with the following specs: Note that QML items other than the Canvas3D are rendered fine. completely buggy.Ĭhanging the 3.0 version I request to 2.0 fixes it, and, in my real app, and lets all other GL functionality work fine. The results is a window that alternates between all black and white (flickers) at a high frequency. In the Canvas3D code I first I setup all low-level stuff like shaders, vertex buffers and matrices. I've distilled this to a completely trivial testcase.
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