diff options
author | Oswald Buddenhagen <oswald.buddenhagen@qt.io> | 2017-10-06 11:49:09 +0000 |
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committer | Oswald Buddenhagen <oswald.buddenhagen@qt.io> | 2017-10-06 16:58:43 +0200 |
commit | 07840524085bd1785b8f9142b03d942f678c5c51 (patch) | |
tree | 499c1674fdd1b3e0c07688d8e4e56748dfea2ca3 /src/Runtime/res/effectlib/flakeNoiseBumpTexture.glsllib |
Initial import
Diffstat (limited to 'src/Runtime/res/effectlib/flakeNoiseBumpTexture.glsllib')
-rw-r--r-- | src/Runtime/res/effectlib/flakeNoiseBumpTexture.glsllib | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/src/Runtime/res/effectlib/flakeNoiseBumpTexture.glsllib b/src/Runtime/res/effectlib/flakeNoiseBumpTexture.glsllib new file mode 100644 index 00000000..6bd5f7e4 --- /dev/null +++ b/src/Runtime/res/effectlib/flakeNoiseBumpTexture.glsllib @@ -0,0 +1,46 @@ +/**************************************************************************** +** +** Copyright (C) 2014 NVIDIA Corporation. +** Copyright (C) 2017 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of Qt 3D Studio. +** +** $QT_BEGIN_LICENSE:GPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3 or (at your option) any later version +** approved by the KDE Free Qt Foundation. The licenses are as published by +** the Free Software Foundation and appearing in the file LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +vec3 flakeNoiseBumpTexture( in texture_coordinate_info uvw, in float scale, in float strength, in vec3 normal ) +{ + vec3 tex = uvw.position / scale; + vec3 grad = miNoise( tex ).xyz; + + // displace coordinate according to noise value + tex += 2.0f * grad; + + // then use only integer coordinates, to make flakes transients harder and not wobbly + grad = miNoise( round( tex ) ).xyz; + + vec3 n = normalize(vec3(strength * grad.x, strength * grad.y, 1.0)); + n = n.x*uvw.tangent_u + n.y*uvw.tangent_v + n.z*normal; + return normalize(normal + n); +} + |