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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 519 insertions, 0 deletions

diff --git a/src/opengl/gl2paintengineex/qglengineshadersource_p.h b/src/opengl/gl2paintengineex/qglengineshadersource_p.h
new file mode 100644
index 0000000000..fc8b9ef4db
--- /dev/null
+++ b/src/opengl/gl2paintengineex/qglengineshadersource_p.h
@@ -0,0 +1,519 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+
+#ifndef QGL_ENGINE_SHADER_SOURCE_H
+#define QGL_ENGINE_SHADER_SOURCE_H
+
+#include "qglengineshadermanager_p.h"
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(OpenGL)
+
+
+static const char* const qglslMainVertexShader = "\n\
+    void setPosition(); \n\
+    void main(void) \n\
+    { \n\
+        setPosition(); \n\
+    }\n";
+
+static const char* const qglslMainWithTexCoordsVertexShader = "\n\
+    attribute highp   vec2      textureCoordArray; \n\
+    varying   highp   vec2      textureCoords; \n\
+    void setPosition(); \n\
+    void main(void) \n\
+    { \n\
+        setPosition(); \n\
+        textureCoords = textureCoordArray; \n\
+    }\n";
+
+static const char* const qglslMainWithTexCoordsAndOpacityVertexShader = "\n\
+    attribute highp   vec2      textureCoordArray; \n\
+    attribute lowp    float     opacityArray; \n\
+    varying   highp   vec2      textureCoords; \n\
+    varying   lowp    float     opacity; \n\
+    void setPosition(); \n\
+    void main(void) \n\
+    { \n\
+        setPosition(); \n\
+        textureCoords = textureCoordArray; \n\
+        opacity = opacityArray; \n\
+    }\n";
+
+// NOTE: We let GL do the perspective correction so texture lookups in the fragment
+//       shader are also perspective corrected.
+static const char* const qglslPositionOnlyVertexShader = "\n\
+    attribute highp   vec2      vertexCoordsArray; \n\
+    attribute highp   vec3      pmvMatrix1; \n\
+    attribute highp   vec3      pmvMatrix2; \n\
+    attribute highp   vec3      pmvMatrix3; \n\
+    void setPosition(void) \n\
+    { \n\
+        highp mat3 pmvMatrix = mat3(pmvMatrix1, pmvMatrix2, pmvMatrix3); \n\
+        vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \n\
+        gl_Position = vec4(transformedPos.xy, 0.0, transformedPos.z); \n\
+    }\n";
+
+static const char* const qglslComplexGeometryPositionOnlyVertexShader = "\n\
+    uniform highp mat3 matrix; \n\
+    attribute highp vec2 vertexCoordsArray; \n\
+    void setPosition(void) \n\
+    { \n\
+      gl_Position = vec4(matrix * vec3(vertexCoordsArray, 1), 1);\n\
+    } \n";
+
+static const char* const qglslUntransformedPositionVertexShader = "\n\
+    attribute highp   vec4      vertexCoordsArray; \n\
+    void setPosition(void) \n\
+    { \n\
+        gl_Position = vertexCoordsArray; \n\
+    }\n";
+
+// Pattern Brush - This assumes the texture size is 8x8 and thus, the inverted size is 0.125
+static const char* const qglslPositionWithPatternBrushVertexShader = "\n\
+    attribute highp   vec2      vertexCoordsArray; \n\
+    attribute highp   vec3      pmvMatrix1; \n\
+    attribute highp   vec3      pmvMatrix2; \n\
+    attribute highp   vec3      pmvMatrix3; \n\
+    uniform   mediump vec2      halfViewportSize; \n\
+    uniform   highp   vec2      invertedTextureSize; \n\
+    uniform   highp   mat3      brushTransform; \n\
+    varying   highp   vec2      patternTexCoords; \n\
+    void setPosition(void) \n\
+    { \n\
+        highp mat3 pmvMatrix = mat3(pmvMatrix1, pmvMatrix2, pmvMatrix3); \n\
+        vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \n\
+        gl_Position.xy = transformedPos.xy / transformedPos.z; \n\
+        mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \n\
+        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1.0); \n\
+        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \n\
+        gl_Position = vec4(gl_Position.xy * invertedHTexCoordsZ, 0.0, invertedHTexCoordsZ); \n\
+        patternTexCoords.xy = (hTexCoords.xy * 0.125) * invertedHTexCoordsZ; \n\
+    }\n";
+
+static const char* const qglslAffinePositionWithPatternBrushVertexShader
+                 = qglslPositionWithPatternBrushVertexShader;
+
+static const char* const qglslPatternBrushSrcFragmentShader = "\n\
+    uniform           sampler2D brushTexture; \n\
+    uniform   lowp    vec4      patternColor; \n\
+    varying   highp   vec2      patternTexCoords;\n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        return patternColor * (1.0 - texture2D(brushTexture, patternTexCoords).r); \n\
+    }\n";
+
+
+// Linear Gradient Brush
+static const char* const qglslPositionWithLinearGradientBrushVertexShader = "\n\
+    attribute highp   vec2      vertexCoordsArray; \n\
+    attribute highp   vec3      pmvMatrix1; \n\
+    attribute highp   vec3      pmvMatrix2; \n\
+    attribute highp   vec3      pmvMatrix3; \n\
+    uniform   mediump vec2      halfViewportSize; \n\
+    uniform   highp   vec3      linearData; \n\
+    uniform   highp   mat3      brushTransform; \n\
+    varying   mediump float     index; \n\
+    void setPosition() \n\
+    { \n\
+        highp mat3 pmvMatrix = mat3(pmvMatrix1, pmvMatrix2, pmvMatrix3); \n\
+        vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \n\
+        gl_Position.xy = transformedPos.xy / transformedPos.z; \n\
+        mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \n\
+        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \n\
+        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \n\
+        gl_Position = vec4(gl_Position.xy * invertedHTexCoordsZ, 0.0, invertedHTexCoordsZ); \n\
+        index = (dot(linearData.xy, hTexCoords.xy) * linearData.z) * invertedHTexCoordsZ; \n\
+    }\n";
+
+static const char* const qglslAffinePositionWithLinearGradientBrushVertexShader
+                 = qglslPositionWithLinearGradientBrushVertexShader;
+
+static const char* const qglslLinearGradientBrushSrcFragmentShader = "\n\
+    uniform           sampler2D brushTexture; \n\
+    varying   mediump float     index; \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        mediump vec2 val = vec2(index, 0.5); \n\
+        return texture2D(brushTexture, val); \n\
+    }\n";
+
+
+// Conical Gradient Brush
+static const char* const qglslPositionWithConicalGradientBrushVertexShader = "\n\
+    attribute highp   vec2      vertexCoordsArray; \n\
+    attribute highp   vec3      pmvMatrix1; \n\
+    attribute highp   vec3      pmvMatrix2; \n\
+    attribute highp   vec3      pmvMatrix3; \n\
+    uniform   mediump vec2      halfViewportSize; \n\
+    uniform   highp   mat3      brushTransform; \n\
+    varying   highp   vec2      A; \n\
+    void setPosition(void) \n\
+    { \n\
+        highp mat3 pmvMatrix = mat3(pmvMatrix1, pmvMatrix2, pmvMatrix3); \n\
+        vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \n\
+        gl_Position.xy = transformedPos.xy / transformedPos.z; \n\
+        mediump vec2  viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \n\
+        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \n\
+        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \n\
+        gl_Position = vec4(gl_Position.xy * invertedHTexCoordsZ, 0.0, invertedHTexCoordsZ); \n\
+        A = hTexCoords.xy * invertedHTexCoordsZ; \n\
+    }\n";
+
+static const char* const qglslAffinePositionWithConicalGradientBrushVertexShader
+                 = qglslPositionWithConicalGradientBrushVertexShader;
+
+static const char* const qglslConicalGradientBrushSrcFragmentShader = "\n\
+    #define INVERSE_2PI 0.1591549430918953358 \n\
+    uniform           sampler2D brushTexture; \n\
+    uniform   mediump float     angle; \n\
+    varying   highp   vec2      A; \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        highp float t; \n\
+        if (abs(A.y) == abs(A.x)) \n\
+            t = (atan(-A.y + 0.002, A.x) + angle) * INVERSE_2PI; \n\
+        else \n\
+            t = (atan(-A.y, A.x) + angle) * INVERSE_2PI; \n\
+        return texture2D(brushTexture, vec2(t - floor(t), 0.5)); \n\
+    }\n";
+
+
+// Radial Gradient Brush
+static const char* const qglslPositionWithRadialGradientBrushVertexShader = "\n\
+    attribute highp   vec2      vertexCoordsArray;\n\
+    attribute highp   vec3      pmvMatrix1; \n\
+    attribute highp   vec3      pmvMatrix2; \n\
+    attribute highp   vec3      pmvMatrix3; \n\
+    uniform   mediump vec2      halfViewportSize; \n\
+    uniform   highp   mat3      brushTransform; \n\
+    uniform   highp   vec2      fmp; \n\
+    varying   highp   float     b; \n\
+    varying   highp   vec2      A; \n\
+    void setPosition(void) \n\
+    {\n\
+        highp mat3 pmvMatrix = mat3(pmvMatrix1, pmvMatrix2, pmvMatrix3); \n\
+        vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \n\
+        gl_Position.xy = transformedPos.xy / transformedPos.z; \n\
+        mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \n\
+        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \n\
+        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \n\
+        gl_Position = vec4(gl_Position.xy * invertedHTexCoordsZ, 0.0, invertedHTexCoordsZ); \n\
+        A = hTexCoords.xy * invertedHTexCoordsZ; \n\
+        b = 2.0 * dot(A, fmp); \n\
+    }\n";
+
+static const char* const qglslAffinePositionWithRadialGradientBrushVertexShader
+                 = qglslPositionWithRadialGradientBrushVertexShader;
+
+static const char* const qglslRadialGradientBrushSrcFragmentShader = "\n\
+    uniform           sampler2D brushTexture; \n\
+    uniform   highp   float     fmp2_m_radius2; \n\
+    uniform   highp   float     inverse_2_fmp2_m_radius2; \n\
+    varying   highp   float     b; \n\
+    varying   highp   vec2      A; \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        highp float c = -dot(A, A); \n\
+        highp vec2 val = vec2((-b + sqrt(b*b - 4.0*fmp2_m_radius2*c)) * inverse_2_fmp2_m_radius2, 0.5); \n\
+        return texture2D(brushTexture, val); \n\
+    }\n";
+
+
+// Texture Brush
+static const char* const qglslPositionWithTextureBrushVertexShader = "\n\
+    attribute highp   vec2      vertexCoordsArray; \n\
+    attribute highp   vec3      pmvMatrix1; \n\
+    attribute highp   vec3      pmvMatrix2; \n\
+    attribute highp   vec3      pmvMatrix3; \n\
+    uniform   mediump vec2      halfViewportSize; \n\
+    uniform   highp   vec2      invertedTextureSize; \n\
+    uniform   highp   mat3      brushTransform; \n\
+    varying   highp   vec2      brushTextureCoords; \n\
+    void setPosition(void) \n\
+    { \n\
+        highp mat3 pmvMatrix = mat3(pmvMatrix1, pmvMatrix2, pmvMatrix3); \n\
+        vec3 transformedPos = pmvMatrix * vec3(vertexCoordsArray.xy, 1.0); \n\
+        gl_Position.xy = transformedPos.xy / transformedPos.z; \n\
+        mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \n\
+        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \n\
+        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \n\
+        gl_Position = vec4(gl_Position.xy * invertedHTexCoordsZ, 0.0, invertedHTexCoordsZ); \n\
+        brushTextureCoords.xy = (hTexCoords.xy * invertedTextureSize) * gl_Position.w; \n\
+    }\n";
+
+static const char* const qglslAffinePositionWithTextureBrushVertexShader
+                 = qglslPositionWithTextureBrushVertexShader;
+
+#if defined(QT_OPENGL_ES_2)
+// OpenGL ES does not support GL_REPEAT wrap modes for NPOT textures. So instead,
+// we emulate GL_REPEAT by only taking the fractional part of the texture coords.
+// TODO: Special case POT textures which don't need this emulation
+static const char* const qglslTextureBrushSrcFragmentShader = "\n\
+    varying highp   vec2      brushTextureCoords; \n\
+    uniform         sampler2D brushTexture; \n\
+    lowp vec4 srcPixel() { \n\
+        return texture2D(brushTexture, fract(brushTextureCoords)); \n\
+    }\n";
+#else
+static const char* const qglslTextureBrushSrcFragmentShader = "\n\
+    varying   highp   vec2      brushTextureCoords; \n\
+    uniform           sampler2D brushTexture; \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        return texture2D(brushTexture, brushTextureCoords); \n\
+    }\n";
+#endif
+
+static const char* const qglslTextureBrushSrcWithPatternFragmentShader = "\n\
+    varying   highp   vec2      brushTextureCoords; \n\
+    uniform   lowp    vec4      patternColor; \n\
+    uniform           sampler2D brushTexture; \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        return patternColor * (1.0 - texture2D(brushTexture, brushTextureCoords).r); \n\
+    }\n";
+
+// Solid Fill Brush
+static const char* const qglslSolidBrushSrcFragmentShader = "\n\
+    uniform   lowp    vec4      fragmentColor; \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        return fragmentColor; \n\
+    }\n";
+
+static const char* const qglslImageSrcFragmentShader = "\n\
+    varying   highp   vec2      textureCoords; \n\
+    uniform           sampler2D imageTexture; \n\
+    lowp vec4 srcPixel() \n\
+    { \n"
+        "return texture2D(imageTexture, textureCoords); \n"
+    "}\n";
+
+static const char* const qglslCustomSrcFragmentShader = "\n\
+    varying   highp   vec2      textureCoords; \n\
+    uniform           sampler2D imageTexture; \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        return customShader(imageTexture, textureCoords); \n\
+    }\n";
+
+static const char* const qglslImageSrcWithPatternFragmentShader = "\n\
+    varying   highp   vec2      textureCoords; \n\
+    uniform   lowp    vec4      patternColor; \n\
+    uniform           sampler2D imageTexture; \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        return patternColor * (1.0 - texture2D(imageTexture, textureCoords).r); \n\
+    }\n";
+
+static const char* const qglslNonPremultipliedImageSrcFragmentShader = "\n\
+    varying   highp   vec2      textureCoords; \n\
+    uniform          sampler2D imageTexture; \n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        lowp vec4 sample = texture2D(imageTexture, textureCoords); \n\
+        sample.rgb = sample.rgb * sample.a; \n\
+        return sample; \n\
+    }\n";
+
+static const char* const qglslShockingPinkSrcFragmentShader = "\n\
+    lowp vec4 srcPixel() \n\
+    { \n\
+        return vec4(0.98, 0.06, 0.75, 1.0); \n\
+    }\n";
+
+static const char* const qglslMainFragmentShader_ImageArrays = "\n\
+    varying   lowp    float     opacity; \n\
+    lowp vec4 srcPixel(); \n\
+    void main() \n\
+    { \n\
+        gl_FragColor = srcPixel() * opacity; \n\
+    }\n";
+
+static const char* const qglslMainFragmentShader_CMO = "\n\
+    uniform   lowp    float     globalOpacity; \n\
+    lowp vec4 srcPixel(); \n\
+    lowp vec4 applyMask(lowp vec4); \n\
+    lowp vec4 compose(lowp vec4); \n\
+    void main() \n\
+    { \n\
+        gl_FragColor = applyMask(compose(srcPixel()*globalOpacity))); \n\
+    }\n";
+
+static const char* const qglslMainFragmentShader_CM = "\n\
+    lowp vec4 srcPixel(); \n\
+    lowp vec4 applyMask(lowp vec4); \n\
+    lowp vec4 compose(lowp vec4); \n\
+    void main() \n\
+    { \n\
+        gl_FragColor = applyMask(compose(srcPixel())); \n\
+    }\n";
+
+static const char* const qglslMainFragmentShader_MO = "\n\
+    uniform   lowp    float     globalOpacity; \n\
+    lowp vec4 srcPixel(); \n\
+    lowp vec4 applyMask(lowp vec4); \n\
+    void main() \n\
+    { \n\
+        gl_FragColor = applyMask(srcPixel()*globalOpacity); \n\
+    }\n";
+
+static const char* const qglslMainFragmentShader_M = "\n\
+    lowp vec4 srcPixel(); \n\
+    lowp vec4 applyMask(lowp vec4); \n\
+    void main() \n\
+    { \n\
+        gl_FragColor = applyMask(srcPixel()); \n\
+    }\n";
+
+static const char* const qglslMainFragmentShader_CO = "\n\
+    uniform   lowp    float     globalOpacity; \n\
+    lowp vec4 srcPixel(); \n\
+    lowp vec4 compose(lowp vec4); \n\
+    void main() \n\
+    { \n\
+        gl_FragColor = compose(srcPixel()*globalOpacity); \n\
+    }\n";
+
+static const char* const qglslMainFragmentShader_C = "\n\
+    lowp vec4 srcPixel(); \n\
+    lowp vec4 compose(lowp vec4); \n\
+    void main() \n\
+    { \n\
+        gl_FragColor = compose(srcPixel()); \n\
+    }\n";
+
+static const char* const qglslMainFragmentShader_O = "\n\
+    uniform   lowp    float     globalOpacity; \n\
+    lowp vec4 srcPixel(); \n\
+    void main() \n\
+    { \n\
+        gl_FragColor = srcPixel()*globalOpacity; \n\
+    }\n";
+
+static const char* const qglslMainFragmentShader = "\n\
+    lowp vec4 srcPixel(); \n\
+    void main() \n\
+    { \n\
+        gl_FragColor = srcPixel(); \n\
+    }\n";
+
+static const char* const qglslMaskFragmentShader = "\n\
+    varying   highp   vec2      textureCoords;\n\
+    uniform           sampler2D maskTexture;\n\
+    lowp vec4 applyMask(lowp vec4 src) \n\
+    {\n\
+        lowp vec4 mask = texture2D(maskTexture, textureCoords); \n\
+        return src * mask.a; \n\
+    }\n";
+
+// For source over with subpixel antialiasing, the final color is calculated per component as follows
+// (.a is alpha component, .c is red, green or blue component):
+// alpha = src.a * mask.c * opacity
+// dest.c = dest.c * (1 - alpha) + src.c * alpha
+//
+// In the first pass, calculate: dest.c = dest.c * (1 - alpha) with blend funcs: zero, 1 - source color
+// In the second pass, calculate: dest.c = dest.c + src.c * alpha with blend funcs: one, one
+//
+// If source is a solid color (src is constant), only the first pass is needed, with blend funcs: constant, 1 - source color
+
+// For source composition with subpixel antialiasing, the final color is calculated per component as follows:
+// alpha = src.a * mask.c * opacity
+// dest.c = dest.c * (1 - mask.c) + src.c * alpha
+//
+
+static const char* const qglslRgbMaskFragmentShaderPass1 = "\n\
+    varying   highp   vec2      textureCoords;\n\
+    uniform           sampler2D maskTexture;\n\
+    lowp vec4 applyMask(lowp vec4 src) \n\
+    { \n\
+        lowp vec4 mask = texture2D(maskTexture, textureCoords); \n\
+        return src.a * mask; \n\
+    }\n";
+
+static const char* const qglslRgbMaskFragmentShaderPass2 = "\n\
+    varying   highp   vec2      textureCoords;\n\
+    uniform           sampler2D maskTexture;\n\
+    lowp vec4 applyMask(lowp vec4 src) \n\
+    { \n\
+        lowp vec4 mask = texture2D(maskTexture, textureCoords); \n\
+        return src * mask; \n\
+    }\n";
+
+/*
+    Left to implement:
+        RgbMaskFragmentShader,
+        RgbMaskWithGammaFragmentShader,
+
+        MultiplyCompositionModeFragmentShader,
+        ScreenCompositionModeFragmentShader,
+        OverlayCompositionModeFragmentShader,
+        DarkenCompositionModeFragmentShader,
+        LightenCompositionModeFragmentShader,
+        ColorDodgeCompositionModeFragmentShader,
+        ColorBurnCompositionModeFragmentShader,
+        HardLightCompositionModeFragmentShader,
+        SoftLightCompositionModeFragmentShader,
+        DifferenceCompositionModeFragmentShader,
+        ExclusionCompositionModeFragmentShader,
+*/
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // GLGC_SHADER_SOURCE_H