src/opengl/gl2paintengineex/qglengineshadersource_p.h
author Alex Gilkes <alex.gilkes@nokia.com>
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/****************************************************************************
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**
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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtOpenGL module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights.  These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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//
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//  W A R N I N G
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//  -------------
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//
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// This file is not part of the Qt API.  It exists purely as an
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// implementation detail.  This header file may change from version to
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// version without notice, or even be removed.
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//
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// We mean it.
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//
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#ifndef QGL_ENGINE_SHADER_SOURCE_H
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#define QGL_ENGINE_SHADER_SOURCE_H
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#include "qglengineshadermanager_p.h"
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QT_BEGIN_HEADER
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QT_BEGIN_NAMESPACE
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QT_MODULE(OpenGL)
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static const char* const qglslMainVertexShader = "\
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    uniform   highp float   depth;\
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    void setPosition();\
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    void main(void)\
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    {\
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            setPosition();\
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            gl_Position.z = depth * gl_Position.w;\
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    }";
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static const char* const qglslMainWithTexCoordsVertexShader = "\
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    attribute highp  vec2 textureCoordArray; \
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    varying   highp  vec2 textureCoords; \
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    uniform   highp float   depth;\
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    void setPosition();\
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    void main(void) \
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    {\
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            setPosition();\
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            gl_Position.z = depth * gl_Position.w;\
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            textureCoords = textureCoordArray; \
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    }";
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static const char* const qglslMainWithTexCoordsAndOpacityVertexShader = "\
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    attribute highp vec2  textureCoordArray; \
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    attribute lowp  float opacityArray; \
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    varying   highp vec2  textureCoords; \
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    varying   lowp  float opacity; \
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    uniform   highp float depth; \
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    void setPosition(); \
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    void main(void) \
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    { \
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            setPosition(); \
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            gl_Position.z = depth * gl_Position.w; \
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            textureCoords = textureCoordArray; \
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            opacity = opacityArray; \
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    }";
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static const char* const qglslPositionOnlyVertexShader = "\
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    attribute highp vec4    vertexCoordsArray;\
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    uniform   highp mat4    pmvMatrix;\
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    void setPosition(void)\
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    {\
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            gl_Position = pmvMatrix * vertexCoordsArray;\
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    }";
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static const char* const qglslUntransformedPositionVertexShader = "\
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    attribute highp vec4    vertexCoordsArray;\
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    void setPosition(void)\
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    {\
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            gl_Position = vertexCoordsArray;\
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    }";
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// Pattern Brush - This assumes the texture size is 8x8 and thus, the inverted size is 0.125
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static const char* const qglslPositionWithPatternBrushVertexShader = "\
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    attribute highp   vec4  vertexCoordsArray; \
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    uniform   highp   mat4  pmvMatrix; \
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    uniform   mediump vec2  halfViewportSize; \
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    uniform   highp   vec2  invertedTextureSize; \
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    uniform   highp   mat3  brushTransform; \
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    varying   highp   vec2  patternTexCoords; \
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    void setPosition(void) { \
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            gl_Position = pmvMatrix * vertexCoordsArray;\
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            gl_Position.xy = gl_Position.xy / gl_Position.w; \
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            mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \
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            mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \
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            mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \
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            gl_Position.xy = gl_Position.xy * invertedHTexCoordsZ; \
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            gl_Position.w = invertedHTexCoordsZ; \
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            patternTexCoords.xy = (hTexCoords.xy * 0.125) * invertedHTexCoordsZ; \
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    }";
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static const char* const qglslAffinePositionWithPatternBrushVertexShader
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                 = qglslPositionWithPatternBrushVertexShader;
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static const char* const qglslPatternBrushSrcFragmentShader = "\
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    uniform lowp    sampler2D brushTexture;\
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    uniform lowp    vec4      patternColor; \
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    varying highp   vec2      patternTexCoords;\
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    lowp vec4 srcPixel() { \
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        return patternColor * (1.0 - texture2D(brushTexture, patternTexCoords).r); \
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    }\n";
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// Linear Gradient Brush
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static const char* const qglslPositionWithLinearGradientBrushVertexShader = "\
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    attribute highp   vec4  vertexCoordsArray; \
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    uniform   highp   mat4  pmvMatrix; \
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    uniform   mediump vec2  halfViewportSize; \
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    uniform   highp   vec3  linearData; \
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    uniform   highp   mat3  brushTransform; \
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    varying   mediump float index; \
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    void setPosition() { \
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        gl_Position = pmvMatrix * vertexCoordsArray;\
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        gl_Position.xy = gl_Position.xy / gl_Position.w; \
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        mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \
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        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \
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        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \
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        gl_Position.xy = gl_Position.xy * invertedHTexCoordsZ; \
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        gl_Position.w = invertedHTexCoordsZ; \
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        index = (dot(linearData.xy, hTexCoords.xy) * linearData.z) * invertedHTexCoordsZ; \
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    }";
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static const char* const qglslAffinePositionWithLinearGradientBrushVertexShader
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                 = qglslPositionWithLinearGradientBrushVertexShader;
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static const char* const qglslLinearGradientBrushSrcFragmentShader = "\
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    uniform lowp    sampler2D   brushTexture; \
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    varying mediump float       index; \
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    lowp vec4 srcPixel() { \
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        mediump vec2 val = vec2(index, 0.5); \
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        return texture2D(brushTexture, val); \
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    }\n";
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// Conical Gradient Brush
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static const char* const qglslPositionWithConicalGradientBrushVertexShader = "\
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    attribute highp   vec4  vertexCoordsArray;\
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    uniform   highp   mat4  pmvMatrix;\
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    uniform   mediump vec2  halfViewportSize; \
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    uniform   highp   mat3  brushTransform; \
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    varying   highp   vec2  A; \
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    void setPosition(void)\
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    {\
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        gl_Position = pmvMatrix * vertexCoordsArray;\
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        gl_Position.xy = gl_Position.xy / gl_Position.w; \
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        mediump vec2  viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \
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        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \
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        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \
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        gl_Position.xy = gl_Position.xy * invertedHTexCoordsZ; \
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        gl_Position.w = invertedHTexCoordsZ; \
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        A = hTexCoords.xy * invertedHTexCoordsZ; \
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    }";
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static const char* const qglslAffinePositionWithConicalGradientBrushVertexShader
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                 = qglslPositionWithConicalGradientBrushVertexShader;
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static const char* const qglslConicalGradientBrushSrcFragmentShader = "\n\
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    #define INVERSE_2PI 0.1591549430918953358 \n\
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    uniform lowp    sampler2D   brushTexture; \n\
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    uniform mediump float       angle; \
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    varying highp   vec2        A; \
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    lowp vec4 srcPixel() { \
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        highp float t; \
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        if (abs(A.y) == abs(A.x)) \
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            t = (atan(-A.y + 0.002, A.x) + angle) * INVERSE_2PI; \
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        else \
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            t = (atan(-A.y, A.x) + angle) * INVERSE_2PI; \
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        return texture2D(brushTexture, vec2(t - floor(t), 0.5)); \
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    }";
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// Radial Gradient Brush
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static const char* const qglslPositionWithRadialGradientBrushVertexShader = "\
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    attribute highp   vec4 vertexCoordsArray;\
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    uniform   highp   mat4 pmvMatrix;\
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    uniform   mediump vec2 halfViewportSize; \
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    uniform   highp   mat3 brushTransform; \
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    uniform   highp   vec2 fmp; \
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    varying   highp   float b; \
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    varying   highp   vec2  A; \
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    void setPosition(void) \
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    {\
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        gl_Position = pmvMatrix * vertexCoordsArray;\
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        gl_Position.xy = gl_Position.xy / gl_Position.w; \
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        mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \
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        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \
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        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \
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        gl_Position.xy = gl_Position.xy * invertedHTexCoordsZ; \
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        gl_Position.w = invertedHTexCoordsZ; \
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        A = hTexCoords.xy * invertedHTexCoordsZ; \
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        b = 2.0 * dot(A, fmp); \
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    }";
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static const char* const qglslAffinePositionWithRadialGradientBrushVertexShader
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                 = qglslPositionWithRadialGradientBrushVertexShader;
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static const char* const qglslRadialGradientBrushSrcFragmentShader = "\
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    uniform lowp    sampler2D   brushTexture; \
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    uniform highp   float       fmp2_m_radius2; \
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    uniform highp   float       inverse_2_fmp2_m_radius2; \
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    varying highp   float       b; \
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    varying highp   vec2        A; \
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    lowp vec4 srcPixel() { \
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        highp float c = -dot(A, A); \
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        highp vec2 val = vec2((-b + sqrt(b*b - 4.0*fmp2_m_radius2*c)) * inverse_2_fmp2_m_radius2, 0.5); \
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        return texture2D(brushTexture, val); \
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    }";
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// Texture Brush
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static const char* const qglslPositionWithTextureBrushVertexShader = "\
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    attribute highp   vec4  vertexCoordsArray; \
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    uniform   highp   mat4  pmvMatrix; \
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    uniform   mediump vec2  halfViewportSize; \
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    uniform   highp   vec2  invertedTextureSize; \
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    uniform   highp   mat3  brushTransform; \
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    varying   highp   vec2  brushTextureCoords; \
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    void setPosition(void) { \
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            gl_Position = pmvMatrix * vertexCoordsArray;\
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            gl_Position.xy = gl_Position.xy / gl_Position.w; \
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            mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \
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            mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \
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            mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \
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            gl_Position.xy = gl_Position.xy * invertedHTexCoordsZ; \
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            gl_Position.w = invertedHTexCoordsZ; \
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            brushTextureCoords.xy = (hTexCoords.xy * invertedTextureSize) * gl_Position.w; \
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    }";
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static const char* const qglslAffinePositionWithTextureBrushVertexShader
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                 = qglslPositionWithTextureBrushVertexShader;
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#if defined(QT_OPENGL_ES_2)
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// OpenGL ES does not support GL_REPEAT wrap modes for NPOT textures. So instead,
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// we emulate GL_REPEAT by only taking the fractional part of the texture coords.
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// TODO: Special case POT textures which don't need this emulation
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static const char* const qglslTextureBrushSrcFragmentShader = "\
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    varying highp   vec2      brushTextureCoords; \
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    uniform lowp    sampler2D brushTexture; \
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    lowp vec4 srcPixel() { \
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        return texture2D(brushTexture, fract(brushTextureCoords)); \
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    }";
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#else
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static const char* const qglslTextureBrushSrcFragmentShader = "\
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    varying highp   vec2      brushTextureCoords; \
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    uniform lowp    sampler2D brushTexture; \
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    lowp vec4 srcPixel() { \
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        return texture2D(brushTexture, brushTextureCoords); \
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    }";
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#endif
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static const char* const qglslTextureBrushSrcWithPatternFragmentShader = "\
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    varying highp   vec2      brushTextureCoords; \
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    uniform lowp    vec4      patternColor; \
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    uniform lowp    sampler2D brushTexture; \
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    lowp vec4 srcPixel() { \
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        return patternColor * (1.0 - texture2D(brushTexture, brushTextureCoords).r); \
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    }";
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// Solid Fill Brush
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   304
static const char* const qglslSolidBrushSrcFragmentShader = "\
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   305
    uniform lowp vec4 fragmentColor; \
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   306
    lowp vec4 srcPixel() { \
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   307
        return fragmentColor; \
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diff changeset
   308
    }";
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   309
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   310
static const char* const qglslImageSrcFragmentShader = "\
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   311
    varying highp   vec2    textureCoords; \
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   312
    uniform lowp  sampler2D imageTexture; \
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   313
    lowp vec4 srcPixel() { \
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   314
        return texture2D(imageTexture, textureCoords); \
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parents:
diff changeset
   315
    }";
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   316
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   317
static const char* const qglslCustomSrcFragmentShader = "\
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   318
    varying highp vec2      textureCoords; \
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   319
    uniform lowp  sampler2D imageTexture; \
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diff changeset
   320
    lowp vec4 customShader(lowp sampler2D texture, highp vec2 coords); \
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diff changeset
   321
    lowp vec4 srcPixel() { \
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   322
        return customShader(imageTexture, textureCoords); \
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diff changeset
   323
    }";
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   324
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   325
static const char* const qglslImageSrcWithPatternFragmentShader = "\
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   326
    varying highp vec2      textureCoords; \
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   327
    uniform lowp  vec4      patternColor; \
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   328
    uniform lowp  sampler2D imageTexture; \
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diff changeset
   329
    lowp vec4 srcPixel() { \
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   330
        return patternColor * (1.0 - texture2D(imageTexture, textureCoords).r); \
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   331
    }\n";
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   332
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   333
static const char* const qglslNonPremultipliedImageSrcFragmentShader = "\
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   334
    varying highp vec2      textureCoords; \
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   335
    uniform lowp  sampler2D imageTexture; \
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parents:
diff changeset
   336
    lowp vec4 srcPixel() { \
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   337
        lowp vec4 sample = texture2D(imageTexture, textureCoords); \
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   338
        sample.rgb = sample.rgb * sample.a; \
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   339
        return sample; \
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diff changeset
   340
    }";
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diff changeset
   341
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   342
static const char* const qglslShockingPinkSrcFragmentShader = "\
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Alex Gilkes <alex.gilkes@nokia.com>
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diff changeset
   343
    lowp vec4 srcPixel() { \
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diff changeset
   344
        return vec4(0.98, 0.06, 0.75, 1.0); \
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diff changeset
   345
    }";
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parents:
diff changeset
   346
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   347
static const char* const qglslMainFragmentShader_ImageArrays = "\
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   348
    varying lowp float opacity; \
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parents:
diff changeset
   349
    lowp vec4 srcPixel(); \
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parents:
diff changeset
   350
    void main() { \
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diff changeset
   351
        gl_FragColor = srcPixel() * opacity; \
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parents:
diff changeset
   352
    }";
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   353
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   354
static const char* const qglslMainFragmentShader_CMO = "\
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   355
    uniform lowp float globalOpacity; \
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   356
    lowp vec4 srcPixel(); \
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   357
    lowp vec4 applyMask(lowp vec4); \
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   358
    lowp vec4 compose(lowp vec4); \
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   359
    void main() { \
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   360
        gl_FragColor = applyMask(compose(srcPixel()*globalOpacity))); \
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   361
    }";
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   362
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Alex Gilkes <alex.gilkes@nokia.com>
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diff changeset
   363
static const char* const qglslMainFragmentShader_CM = "\
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   364
    lowp vec4 srcPixel(); \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   365
    lowp vec4 applyMask(lowp vec4); \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   366
    lowp vec4 compose(lowp vec4); \
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   367
    void main() { \
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parents:
diff changeset
   368
        gl_FragColor = applyMask(compose(srcPixel())); \
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   369
    }";
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parents:
diff changeset
   370
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   371
static const char* const qglslMainFragmentShader_MO = "\
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   372
    uniform lowp float globalOpacity; \
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   373
    lowp vec4 srcPixel(); \
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   374
    lowp vec4 applyMask(lowp vec4); \
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   375
    void main() { \
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   376
        gl_FragColor = applyMask(srcPixel()*globalOpacity); \
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   377
    }";
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parents:
diff changeset
   378
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Alex Gilkes <alex.gilkes@nokia.com>
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diff changeset
   379
static const char* const qglslMainFragmentShader_M = "\
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   380
    lowp vec4 srcPixel(); \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   381
    lowp vec4 applyMask(lowp vec4); \
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   382
    void main() { \
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   383
        gl_FragColor = applyMask(srcPixel()); \
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   384
    }";
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   385
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   386
static const char* const qglslMainFragmentShader_CO = "\
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   387
    uniform lowp float globalOpacity; \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   388
    lowp vec4 srcPixel(); \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   389
    lowp vec4 compose(lowp vec4); \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   390
    void main() { \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   391
        gl_FragColor = compose(srcPixel()*globalOpacity); \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   392
    }";
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   393
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   394
static const char* const qglslMainFragmentShader_C = "\
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   395
    lowp vec4 srcPixel(); \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   396
    lowp vec4 compose(lowp vec4); \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   397
    void main() { \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   398
        gl_FragColor = compose(srcPixel()); \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   399
    }";
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   400
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   401
static const char* const qglslMainFragmentShader_O = "\
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   402
    uniform lowp float globalOpacity; \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   403
    lowp vec4 srcPixel(); \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   404
    void main() { \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   405
        gl_FragColor = srcPixel()*globalOpacity; \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   406
    }";
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   407
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   408
static const char* const qglslMainFragmentShader = "\
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   409
    lowp vec4 srcPixel(); \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   410
    void main() { \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   411
        gl_FragColor = srcPixel(); \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   412
    }";
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   413
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   414
static const char* const qglslMaskFragmentShader = "\
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   415
    varying highp   vec2      textureCoords;\
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   416
    uniform lowp    sampler2D maskTexture;\
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   417
    lowp vec4 applyMask(lowp vec4 src) \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   418
    {\
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   419
        lowp vec4 mask = texture2D(maskTexture, textureCoords); \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   420
        return src * mask.a; \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   421
    }";
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   422
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   423
// For source over with subpixel antialiasing, the final color is calculated per component as follows
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   424
// (.a is alpha component, .c is red, green or blue component):
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   425
// alpha = src.a * mask.c * opacity
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   426
// dest.c = dest.c * (1 - alpha) + src.c * alpha
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   427
//
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   428
// In the first pass, calculate: dest.c = dest.c * (1 - alpha) with blend funcs: zero, 1 - source color
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   429
// In the second pass, calculate: dest.c = dest.c + src.c * alpha with blend funcs: one, one
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   430
//
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   431
// If source is a solid color (src is constant), only the first pass is needed, with blend funcs: constant, 1 - source color
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   432
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   433
// For source composition with subpixel antialiasing, the final color is calculated per component as follows:
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   434
// alpha = src.a * mask.c * opacity
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   435
// dest.c = dest.c * (1 - mask.c) + src.c * alpha
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   436
//
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   437
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   438
static const char* const qglslRgbMaskFragmentShaderPass1 = "\
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   439
    varying highp   vec2      textureCoords;\
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   440
    uniform lowp    sampler2D maskTexture;\
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   441
    lowp vec4 applyMask(lowp vec4 src) \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   442
    {\
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   443
        lowp vec4 mask = texture2D(maskTexture, textureCoords); \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   444
        return src.a * mask; \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   445
    }";
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   446
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   447
static const char* const qglslRgbMaskFragmentShaderPass2 = "\
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   448
    varying highp   vec2      textureCoords;\
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   449
    uniform lowp    sampler2D maskTexture;\
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   450
    lowp vec4 applyMask(lowp vec4 src) \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   451
    {\
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   452
        lowp vec4 mask = texture2D(maskTexture, textureCoords); \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   453
        return src * mask; \
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   454
    }";
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   455
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   456
/*
1918ee327afb Revision: 200952
Alex Gilkes <alex.gilkes@nokia.com>
parents:
diff changeset
   457
    Left to implement:
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parents:
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   458
        RgbMaskFragmentShader,
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parents:
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   459
        RgbMaskWithGammaFragmentShader,
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parents:
diff changeset
   460
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
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   461
        MultiplyCompositionModeFragmentShader,
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
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   462
        ScreenCompositionModeFragmentShader,
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
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   463
        OverlayCompositionModeFragmentShader,
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
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   464
        DarkenCompositionModeFragmentShader,
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parents:
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   465
        LightenCompositionModeFragmentShader,
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
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   466
        ColorDodgeCompositionModeFragmentShader,
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
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   467
        ColorBurnCompositionModeFragmentShader,
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
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   468
        HardLightCompositionModeFragmentShader,
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
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   469
        SoftLightCompositionModeFragmentShader,
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
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   470
        DifferenceCompositionModeFragmentShader,
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
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   471
        ExclusionCompositionModeFragmentShader,
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Alex Gilkes <alex.gilkes@nokia.com>
parents:
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   472
*/
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parents:
diff changeset
   473
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parents:
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   474
QT_END_NAMESPACE
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parents:
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   475
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parents:
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   476
QT_END_HEADER
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parents:
diff changeset
   477
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parents:
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   478
#endif // GLGC_SHADER_SOURCE_H