diff options
author | Pasi Keränen <pasi.keranen@qt.io> | 2019-06-06 16:22:02 +0300 |
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committer | Pasi Keränen <pasi.keranen@qt.io> | 2019-06-07 13:52:44 +0300 |
commit | b4954701093739e7a4e54a0669f306922d0d4605 (patch) | |
tree | 73d71319a921234f6b507c9098fdc842f7fe06dc /res/effectlib/gles2/monoChannel.glsllib | |
parent | 8548a5f5579e3eee7e5ae6b1f6901dcc8bfee19e (diff) |
Long live the slayer!
Initial commit of OpenGL Runtime to repository.
Based on SHA1 61823aaccc6510699a54b34a2fe3f7523dab3b4e
of qt3dstudio repository.
Task-number: QT3DS-3600
Change-Id: Iaeb80237399f0e5656a19ebec9d1ab3a681d8832
Reviewed-by: Pasi Keränen <pasi.keranen@qt.io>
Diffstat (limited to 'res/effectlib/gles2/monoChannel.glsllib')
-rw-r--r-- | res/effectlib/gles2/monoChannel.glsllib | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/res/effectlib/gles2/monoChannel.glsllib b/res/effectlib/gles2/monoChannel.glsllib new file mode 100644 index 0000000..ca682d6 --- /dev/null +++ b/res/effectlib/gles2/monoChannel.glsllib @@ -0,0 +1,58 @@ +/**************************************************************************** +** +** 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. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef MONO_CHANNEL_GLSLLIB +#define MONO_CHANNEL_GLSLLIB + +#ifdef QT3DS_DEFINE_API +#define mono_alpha 0 +#define mono_average 1 +#define mono_luminance 2 +#define mono_maximum 3 +#endif + +float monoChannel( in vec4 t, const in int monoSource ) +{ + if ( monoSource == mono_alpha ) + return( t.w ); + + if ( monoSource == mono_average ) + return( ( t.x + t.y + t.z ) / 3.0 ); + + if ( monoSource == mono_luminance ) + return( luminance( t.xyz ) ); + + if ( monoSource == mono_maximum ) + return( max( t.x, max( t.y, t.z ) ) ); + + return( 1.0 ); +} + +#endif |