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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/gradient3Recolor.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/gradient3Recolor.glsllib')
-rw-r--r-- | res/effectlib/gradient3Recolor.glsllib | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/res/effectlib/gradient3Recolor.glsllib b/res/effectlib/gradient3Recolor.glsllib new file mode 100644 index 0000000..ba7d593 --- /dev/null +++ b/res/effectlib/gradient3Recolor.glsllib @@ -0,0 +1,73 @@ +/**************************************************************************** +** +** 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. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +float gradientInterpolate( in int interpolationMode, in float value ) +{ + switch( interpolationMode ) + { + case gradient_interpolation_linear : + return( value ); + case gradient_interpolation_off : + return( 0.0 ); + case gradient_interpolation_ease_in : + return( 1.0 - pow( 1.0 - value, 2.0/3.0 ) ); + case gradient_interpolation_ease_out : + return( pow( value, 2.0/3.0 ) ); + case gradient_interpolation_ease_in_out : + return( ( value <= 0.5 ) + ? 0.5 * pow( 2.0 * value, 2.0/3.0 ) + : 0.5 + 0.5 * ( 1.0 - pow( 2.0 * ( 1.0 - value ), 2.0/3.0 ) ) ); + default: + return( value ); // default is linear + } +} + +texture_return gradient3Recolor( in float gradientPositions[3], in vec3 gradientColors[3], in int interpolationModes[3], in int monoSource, in float distortion, in float position ) +{ + texture_return tr; + float pos = position + distortion; + if ( pos <= gradientPositions[0] ) + { + tr.tint = gradientColors[0]; + } + else if ( pos >= gradientPositions[2] ) + { + tr.tint = gradientColors[2]; + } + else + { + int index = ( position < gradientPositions[1] ) ? 0 : 1; + float relPos = gradientInterpolate( interpolationModes[index], ( pos - gradientPositions[index] ) / ( gradientPositions[index+1] - gradientPositions[index] ) ); + tr.tint = mix( gradientColors[index], gradientColors[index+1], relPos ); + } + tr.mono = 0.0; + return( tr ); +} + |