Clean up existing & implement missing GLSL for new shader manager

1 files changed, 385 insertions, 0 deletions

diff --git a/src/opengl/gl2paintengineex/qglengineshadersource_p.h b/src/opengl/gl2paintengineex/qglengineshadersource_p.h
new file mode 100644
index 0000000..945c56c
--- /dev/null
+++ b/src/opengl/gl2paintengineex/qglengineshadersource_p.h
@@ -0,0 +1,385 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@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 qglslSimpleVertexShader = "\
+    attribute highp vec4    inputVertex;\
+    uniform   highp mat4    pmvMatrix;\
+    void main(void)\
+    {\
+            gl_Position = pmvMatrix * inputVertex;\
+    }";
+
+static const char* const qglslMainVertexShader = "\
+    void setPosition();\
+    void main(void)\
+    {\
+            setPosition();\
+    }";
+
+static const char* const qglslMainWithTexCoordsVertexShader = "\
+    attribute lowp  vec2    textureCoord; \
+    varying   lowp  vec2    fragTextureCoord; \
+    void setPosition();\
+    void main(void) \
+    {\
+            setPosition();\
+            fragTextureCoord = textureCoord; \
+    }";
+
+
+static const char* const qglslPositionOnlyVertexShader = "\
+    attribute highp vec4    inputVertex;\
+    uniform   highp mat4    pmvMatrix;\
+    void setPosition(void)\
+    {\
+            gl_Position = pmvMatrix * inputVertex;\
+    }";
+
+
+// Pattern Brush - This assumes the texture size is 8x8 and thus, the inverted size is 0.125
+static const char* const qglslPositionWithPatternBrushVertexShader = "\
+    attribute highp   vec4  inputVertex; \
+    uniform   highp   mat4  pmvMatrix; \
+    uniform   mediump vec2  halfViewportSize; \
+    uniform   mediump vec2  invertedTextureSize; \
+    uniform   mediump mat3  brushTransform; \
+    varying   mediump vec2  patternTexCoords; \
+    void setPosition(void) { \
+            gl_Position = pmvMatrix * inputVertex;\
+            gl_Position.xy = gl_Position.xy / gl_Position.w; \
+            mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \
+            mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \
+            mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \
+            gl_Position.xy = gl_Position.xy * invertedHTexCoordsZ; \
+            gl_Position.w = invertedHTexCoordsZ; \
+            patternTexCoords.xy = (hTexCoords.xy * 0.125) * invertedHTexCoordsZ; \
+            patternTexCoords.y = -patternTexCoords.y; \
+    }";
+
+static const char* const qglslAffinePositionWithPatternBrushVertexShader
+                 = qglslPositionWithPatternBrushVertexShader;
+
+static const char* const qglslPatternBrushSrcFragmentShader = "\
+    uniform         sampler2D brushTexture;\
+    uniform lowp    vec4      patternColor; \
+    varying mediump vec2      patternTexCoords;\
+    lowp vec4 srcPixel() { \
+        return patternColor * texture2D(brushTexture, patternTexCoords).r; \
+    }\n";
+
+
+// Linear Gradient Brush
+static const char* const qglslPositionWithLinearGradientBrushVertexShader = "\
+    attribute highp   vec4  inputVertex; \
+    uniform   highp   mat4  pmvMatrix; \
+    uniform   mediump vec2  halfViewportSize; \
+    uniform   highp   vec3  linearData; \
+    uniform   highp   mat3  brushTransform; \
+    varying   mediump float index ; \
+    void setPosition() { \
+        gl_Position = pmvMatrix * inputVertex;\
+        gl_Position.xy = gl_Position.xy / gl_Position.w; \
+        mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \
+        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \
+        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \
+        gl_Position.xy = gl_Position.xy * invertedHTexCoordsZ; \
+        gl_Position.w = invertedHTexCoordsZ; \
+        index = (dot(linearData.xy, hTexCoords.xy) * linearData.z) * invertedHTexCoordsZ; \
+    }";
+
+static const char* const qglslAffinePositionWithLinearGradientBrushVertexShader
+                 = qglslPositionWithLinearGradientBrushVertexShader;
+
+static const char* const qglslLinearGradientBrushSrcFragmentShader = "\
+    uniform         sampler2D   brushTexture; \
+    varying mediump float       index; \
+    lowp vec4 srcPixel() { \
+        mediump vec2 val = vec2(index, 0.5); \
+        return texture2D(brushTexture, val); \
+    }\n";
+
+
+// Conical Gradient Brush
+static const char* const qglslPositionWithConicalGradientBrushVertexShader = "\
+    attribute highp   vec4  inputVertex;\
+    uniform   highp   mat4  pmvMatrix;\
+    uniform   mediump vec2  halfViewportSize; \
+    uniform   highp   mat3  brushTransform; \
+    varying   highp   vec2  A; \
+    void setPosition(void)\
+    {\
+        gl_Position = pmvMatrix * inputVertex;\
+        gl_Position.xy = gl_Position.xy / gl_Position.w; \
+        mediump vec2  viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \
+        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \
+        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \
+        gl_Position.xy = gl_Position.xy * invertedHTexCoordsZ; \
+        gl_Position.w = invertedHTexCoordsZ; \
+        A = hTexCoords.xy * invertedHTexCoordsZ; \
+    }";
+
+static const char* const qglslAffinePositionWithConicalGradientBrushVertexShader
+                 = qglslPositionWithConicalGradientBrushVertexShader;
+
+static const char* const qglslConicalGradientBrushSrcFragmentShader = "\
+    #define INVERSE_2PI 0.1591549430918953358 \n\
+    uniform         sampler2D   brushTexture; \
+    uniform mediump float       angle; \
+    varying highp   vec2        A; \
+    lowp vec4 srcPixel() { \
+        if (abs(A.y) == abs(A.x)) \
+            A.y += 0.002; \
+        highp float t = (atan2(-A.y, A.x) + angle) * INVERSE_2PI; \
+        return texture2D(brushTexture, vec2(t - floor(t), 0.5)); \
+    }";
+
+
+// Radial Gradient Brush
+static const char* const qglslPositionWithRadialGradientBrushVertexShader = "\
+    attribute highp   vec4 inputVertex;\
+    uniform   highp   mat4 pmvMatrix;\
+    uniform   mediump vec2 halfViewportSize; \
+    uniform   highp   mat3 brushTransform; \
+    uniform   highp   vec2 fmp; \
+    varying   highp   float b; \
+    varying   highp   vec2  A; \
+    void setPosition(void) \
+    {\
+        gl_Position = pmvMatrix * inputVertex;\
+        gl_Position.xy = gl_Position.xy / gl_Position.w; \
+        mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \
+        mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \
+        mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \
+        gl_Position.xy = gl_Position.xy * invertedHTexCoordsZ; \
+        gl_Position.w = invertedHTexCoordsZ; \
+        A = hTexCoords.xy * invertedHTexCoordsZ; \
+        b = 2.0 * fmp * (A.x + A.y); \
+    }";
+
+static const char* const qglslAffinePositionWithRadialGradientBrushVertexShader
+                 = qglslPositionWithRadialGradientBrushVertexShader;
+
+static const char* const qglslRadialGradientBrushSrcFragmentShader = "\
+    uniform         sampler2D   brushTexture; \
+    uniform highp   float       fmp2_m_radius2; \
+    uniform highp   float       inverse_2_fmp2_m_radius2; \
+    varying highp   float       b; \
+    varying highp   vec2        A; \
+    lowp vec4 srcPixel() { \
+        highp float c = -dot(A, A); \
+        highp vec2 val = vec2((-b + sqrt(b*b - 4.0*fmp2_m_radius2*c)) * inverse_2_fmp2_m_radius2, 0.5); \
+        return texture2D(brushTexture, val); \
+    }";
+
+
+// Texture Brush
+static const char* const qglslPositionWithTextureBrushVertexShader = "\
+    attribute highp   vec4  inputVertex; \
+    uniform   highp   mat4  pmvMatrix; \
+    uniform   mediump vec2  halfViewportSize; \
+    uniform   mediump vec2  invertedTextureSize; \
+    uniform   mediump mat3  brushTransform; \
+    varying   mediump vec2  textureTexCoords; \
+    void setPosition(void) { \
+            gl_Position = pmvMatrix * inputVertex;\
+            gl_Position.xy = gl_Position.xy / gl_Position.w; \
+            mediump vec2 viewportCoords = (gl_Position.xy + 1.0) * halfViewportSize; \
+            mediump vec3 hTexCoords = brushTransform * vec3(viewportCoords, 1); \
+            mediump float invertedHTexCoordsZ = 1.0 / hTexCoords.z; \
+            gl_Position.xy = gl_Position.xy * invertedHTexCoordsZ; \
+            gl_Position.w = invertedHTexCoordsZ; \
+            textureTexCoords.xy = (hTexCoords.xy * invertedTextureSize) * gl_Position.w; \
+            textureTexCoords.y = -textureTexCoords.y; \
+    }";
+
+static const char* const qglslAffinePositionWithTextureBrushVertexShader
+                 = qglslPositionWithTextureBrushVertexShader;
+
+static const char* const qglslTextureBrushSrcFragmentShader = "\
+    varying mediump vec2      textureTexCoords; \
+    uniform         sampler2D brushTexture; \
+    lowp vec4 srcPixel() { \
+        return texture2D(brushTexture, textureTexCoords); \
+    }";
+
+
+// Solid Fill Brush
+static const char* const qglslSolidBrushSrcFragmentShader = "\
+    uniform lowp vec4 fragmentColor; \
+    lowp vec4 srcPixel() { \
+        return fragmentColor; \
+    }";
+
+static const char* const qglslImageSrcFragmentShader = "\
+    varying highp vec2      texCoord; \
+    uniform       sampler2D textureSampler; \
+    lowp vec4 srcPixel() { \
+        return texture2D(textureSampler, texCoord); \
+    }";
+
+static const char* const qglslNonPremultipliedImageSrcFragmentShader = "\
+    varying highp vec2      texCoord; \
+    uniform       sampler2D textureSampler; \
+    lowp vec4 srcPixel() { \
+        lowp vec4 sample = texture2D(textureSampler, texCoord); \
+        sample.rgb = sample.rgb * sample.a; \
+        return sample; \
+    }";
+
+
+static const char* const qglslMainFragmentShader_CMO = "\
+    uniform lowp float globalOpacity; \
+    lowp vec4 srcPixel(); \
+    lowp vec4 applyMask(lowp vec4); \
+    lowp vec4 compose(lowp vec4); \
+    void main() { \
+        gl_FragColor = compose(applyMask(srcPixel()*globalOpacity)); \
+    }";
+
+static const char* const qglslMainFragmentShader_CM = "\
+    lowp vec4 srcPixel(); \
+    lowp vec4 applyMask(lowp vec4); \
+    lowp vec4 compose(lowp vec4); \
+    void main() { \
+        gl_FragColor = compose(applyMask(srcPixel())); \
+    }";
+
+static const char* const qglslMainFragmentShader_MO = "\
+    uniform lowp float globalOpacity; \
+    lowp vec4 srcPixel(); \
+    lowp vec4 applyMask(lowp vec4); \
+    void main() { \
+        gl_FragColor = applyMask(srcPixel()*globalOpacity); \
+    }";
+
+static const char* const qglslMainFragmentShader_M = "\
+    lowp vec4 srcPixel(); \
+    lowp vec4 applyMask(lowp vec4); \
+    void main() { \
+        gl_FragColor = applyMask(srcPixel()); \
+    }";
+
+static const char* const qglslMainFragmentShader_CO = "\
+    uniform lowp float globalOpacity; \
+    lowp vec4 srcPixel(); \
+    lowp vec4 compose(lowp vec4); \
+    void main() { \
+        gl_FragColor = compose(srcPixel()*globalOpacity); \
+    }";
+
+static const char* const qglslMainFragmentShader_C = "\
+    lowp vec4 srcPixel(); \
+    lowp vec4 compose(lowp vec4); \
+    void main() { \
+        gl_FragColor = compose(srcPixel()); \
+    }";
+
+static const char* const qglslMainFragmentShader_O = "\
+    uniform lowp float globalOpacity; \
+    lowp vec4 srcPixel(); \
+    void main() { \
+        gl_FragColor = srcPixel()*globalOpacity; \
+    }";
+
+static const char* const qglslMainFragmentShader = "\
+    lowp vec4 srcPixel(); \
+    void main() { \
+        gl_FragColor = srcPixel(); \
+    }";
+
+
+static const char* const qglslMaskFragmentShader = "\
+    varying highp   vec2      texCoord;\
+    uniform         sampler2D maskTextureSampler;\
+    lowp vec4 applyMask(lowp vec4 src) \
+    {\
+        lowp vec4 mask = texture2D(maskTextureSampler, texCoord); \
+        return src * mask.a; \
+    }";
+
+/*
+    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