diff options
Diffstat (limited to 'canvas/opengl')
7 files changed, 254 insertions, 0 deletions
diff --git a/canvas/opengl/dummyVertexShader.glsl b/canvas/opengl/dummyVertexShader.glsl new file mode 100644 index 000000000..2948ee9b5 --- /dev/null +++ b/canvas/opengl/dummyVertexShader.glsl @@ -0,0 +1,17 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +varying vec2 v_textureCoords2d; +void main(void) +{ + gl_Position = ftransform(); + v_textureCoords2d = gl_MultiTexCoord0.st; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ diff --git a/canvas/opengl/linearMultiColorGradientFragmentShader.glsl b/canvas/opengl/linearMultiColorGradientFragmentShader.glsl new file mode 100644 index 000000000..7ad881368 --- /dev/null +++ b/canvas/opengl/linearMultiColorGradientFragmentShader.glsl @@ -0,0 +1,52 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +#version 120 + +uniform int i_nColors; +uniform sampler1D t_colorArray4d; +uniform sampler1D t_stopArray1d; +uniform mat3x2 m_transform; +varying vec2 v_textureCoords2d; + +int max(int x, int y) +{ + if(x > y) + return x; + return y; +} + +int findBucket(float t) +{ + int nMinBucket=0; + while( nMinBucket < i_nColors && + texture1D(t_stopArray1d, nMinBucket).s < t ) + ++nMinBucket; + return max(nMinBucket-1,0); +} + +void main(void) +{ + float fAlpha = + clamp( (m_transform * vec3(v_textureCoords2d,1)).s, + 0.0, 1.0 ); + + int nMinBucket = findBucket( fAlpha ); + + float fLerp = + (fAlpha-texture1D(t_stopArray1d, nMinBucket).s) / + (texture1D(t_stopArray1d, nMinBucket+1).s - + texture1D(t_stopArray1d, nMinBucket).s); + + gl_FragColor = mix(texture1D(t_colorArray4d, nMinBucket), + texture1D(t_colorArray4d, nMinBucket+1), + fLerp); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ diff --git a/canvas/opengl/linearTwoColorGradientFragmentShader.glsl b/canvas/opengl/linearTwoColorGradientFragmentShader.glsl new file mode 100644 index 000000000..8659bfd11 --- /dev/null +++ b/canvas/opengl/linearTwoColorGradientFragmentShader.glsl @@ -0,0 +1,26 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +#version 120 + +uniform vec4 v_startColor4d; +uniform vec4 v_endColor4d; +uniform mat3x2 m_transform; +varying vec2 v_textureCoords2d; + +void main(void) +{ + gl_FragColor = mix(v_startColor4d, + v_endColor4d, + clamp( + (m_transform * vec3(v_textureCoords2d,1)).s, + 0.0, 1.0)); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ diff --git a/canvas/opengl/radialMultiColorGradientFragmentShader.glsl b/canvas/opengl/radialMultiColorGradientFragmentShader.glsl new file mode 100644 index 000000000..ebc6d6f5f --- /dev/null +++ b/canvas/opengl/radialMultiColorGradientFragmentShader.glsl @@ -0,0 +1,55 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +#version 120 + +uniform int i_nColors; +uniform sampler1D t_colorArray4d; +uniform sampler1D t_stopArray1d; +uniform mat3x2 m_transform; +varying vec2 v_textureCoords2d; +const vec2 v_center2d = vec2(0,0); + +int max(int x, int y) +{ + if(x > y) + return x; + return y; +} + +int findBucket(float t) +{ + int nMinBucket=0; + while( nMinBucket < i_nColors && + texture1D(t_stopArray1d, nMinBucket).s < t ) + ++nMinBucket; + return max(nMinBucket-1,0); +} + +void main(void) +{ + float fAlpha = + clamp( 1.0 - distance( + vec2( m_transform * vec3(v_textureCoords2d,1)), + v_center2d), + 0.0, 1.0 ); + + int nMinBucket=findBucket( fAlpha ); + + float fLerp = + (fAlpha-texture1D(t_stopArray1d, nMinBucket).s) / + (texture1D(t_stopArray1d, nMinBucket+1).s - + texture1D(t_stopArray1d, nMinBucket).s); + + gl_FragColor = mix(texture1D(t_colorArray4d, nMinBucket), + texture1D(t_colorArray4d, nMinBucket+1), + fLerp); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ diff --git a/canvas/opengl/radialTwoColorGradientFragmentShader.glsl b/canvas/opengl/radialTwoColorGradientFragmentShader.glsl new file mode 100644 index 000000000..a5d613454 --- /dev/null +++ b/canvas/opengl/radialTwoColorGradientFragmentShader.glsl @@ -0,0 +1,28 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +#version 120 + +uniform vec4 v_startColor4d; +uniform vec4 v_endColor4d; +uniform mat3x2 m_transform; +varying vec2 v_textureCoords2d; +const vec2 v_center2d = vec2(0,0); + +void main(void) +{ + gl_FragColor = mix(v_startColor4d, + v_endColor4d, + 1.0 - distance( + vec2( + m_transform * vec3(v_textureCoords2d,1)), + v_center2d)); + } + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ diff --git a/canvas/opengl/rectangularMultiColorGradientFragmentShader.glsl b/canvas/opengl/rectangularMultiColorGradientFragmentShader.glsl new file mode 100644 index 000000000..ea17565c1 --- /dev/null +++ b/canvas/opengl/rectangularMultiColorGradientFragmentShader.glsl @@ -0,0 +1,51 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +#version 120 + +uniform int i_nColors; +uniform sampler1D t_colorArray4d; +uniform sampler1D t_stopArray1d; +uniform mat3x2 m_transform; +varying vec2 v_textureCoords2d; + +int max(int x, int y) +{ + if(x > y) + return x; + return y; +} + +int findBucket(float t) +{ + int nMinBucket=0; + while( nMinBucket < i_nColors && + texture1D(t_stopArray1d, nMinBucket).s < t ) + ++nMinBucket; + return max(nMinBucket-1,0); +} + +void main(void) +{ + vec2 v = abs( vec2(m_transform * vec3(v_textureCoords2d,1)) ); + float fAlpha = 1 - max(v.x, v.y); + + int nMinBucket=findBucket( fAlpha ); + + float fLerp = + (fAlpha-texture1D(t_stopArray1d, nMinBucket).s) / + (texture1D(t_stopArray1d, nMinBucket+1).s - + texture1D(t_stopArray1d, nMinBucket).s); + + gl_FragColor = mix(texture1D(t_colorArray4d, nMinBucket), + texture1D(t_colorArray4d, nMinBucket+1), + fLerp); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ diff --git a/canvas/opengl/rectangularTwoColorGradientFragmentShader.glsl b/canvas/opengl/rectangularTwoColorGradientFragmentShader.glsl new file mode 100644 index 000000000..038cdffd2 --- /dev/null +++ b/canvas/opengl/rectangularTwoColorGradientFragmentShader.glsl @@ -0,0 +1,25 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +#version 120 + +uniform vec4 v_startColor4d; +uniform vec4 v_endColor4d; +uniform mat3x2 m_transform; +varying vec2 v_textureCoords2d; +void main(void) +{ + vec2 v = abs( vec2(m_transform * vec3(v_textureCoords2d,1)) ); + float t = max(v.x, v.y); + gl_FragColor = mix(v_startColor4d, + v_endColor4d, + 1.0-t); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |