diff options
Diffstat (limited to 'src/declarative/scenegraph/adaptationlayers/distancefield_glyphnode_p.cpp')
| -rw-r--r-- | src/declarative/scenegraph/adaptationlayers/distancefield_glyphnode_p.cpp | 482 |
1 files changed, 0 insertions, 482 deletions
diff --git a/src/declarative/scenegraph/adaptationlayers/distancefield_glyphnode_p.cpp b/src/declarative/scenegraph/adaptationlayers/distancefield_glyphnode_p.cpp deleted file mode 100644 index 7c34bc9073..0000000000 --- a/src/declarative/scenegraph/adaptationlayers/distancefield_glyphnode_p.cpp +++ /dev/null @@ -1,482 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the QtDeclarative 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. -** -** -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "distancefield_glyphnode_p.h" -#include "distancefieldglyphcache_p.h" -#include <qsgtexture_p.h> -#include <qmath.h> - -QT_BEGIN_NAMESPACE - -class DistanceFieldTextMaterialShader : public AbstractMaterialShader -{ -public: - DistanceFieldTextMaterialShader(); - - virtual void updateState(Renderer *renderer, AbstractMaterial *newEffect, AbstractMaterial *oldEffect, Renderer::Updates updates); - virtual char const *const *attributeNames() const; - -protected: - virtual void initialize(); - virtual const char *vertexShader() const; - virtual const char *fragmentShader() const; - - void updateAlphaRange(); - - qreal m_fontScale; - qreal m_matrixScale; - - int m_matrix_id; - int m_textureScale_id; - int m_alphaMin_id; - int m_alphaMax_id; - int m_color_id; -}; - -const char *DistanceFieldTextMaterialShader::vertexShader() const { - return - "uniform highp mat4 matrix; \n" - "uniform highp vec2 textureScale; \n" - "attribute highp vec4 vCoord; \n" - "attribute highp vec2 tCoord; \n" - "varying highp vec2 sampleCoord; \n" - "void main() { \n" - " sampleCoord = tCoord * textureScale; \n" - " gl_Position = matrix * vCoord; \n" - "}"; -} - -const char *DistanceFieldTextMaterialShader::fragmentShader() const { - return - "varying highp vec2 sampleCoord; \n" - "uniform sampler2D texture; \n" - "uniform lowp vec4 color; \n" - "uniform highp float alphaMin; \n" - "uniform highp float alphaMax; \n" - "void main() { \n" - " gl_FragColor = color * smoothstep(alphaMin, \n" - " alphaMax, \n" - " texture2D(texture, sampleCoord).a); \n" - "}"; -} - -char const *const *DistanceFieldTextMaterialShader::attributeNames() const { - static char const *const attr[] = { "vCoord", "tCoord", 0 }; - return attr; -} - -DistanceFieldTextMaterialShader::DistanceFieldTextMaterialShader() - : m_fontScale(1.0) - , m_matrixScale(1.0) -{ -} - -void DistanceFieldTextMaterialShader::updateAlphaRange() -{ - qreal combinedScale = m_fontScale * m_matrixScale; - qreal alphaMin = qMax(0.0, 0.5 - 0.07 / combinedScale); - qreal alphaMax = qMin(0.5 + 0.07 / combinedScale, 1.0); - m_program.setUniformValue(m_alphaMin_id, GLfloat(alphaMin)); - m_program.setUniformValue(m_alphaMax_id, GLfloat(alphaMax)); -} - -void DistanceFieldTextMaterialShader::initialize() -{ - AbstractMaterialShader::initialize(); - m_matrix_id = m_program.uniformLocation("matrix"); - m_textureScale_id = m_program.uniformLocation("textureScale"); - m_color_id = m_program.uniformLocation("color"); - m_alphaMin_id = m_program.uniformLocation("alphaMin"); - m_alphaMax_id = m_program.uniformLocation("alphaMax"); -} - -void DistanceFieldTextMaterialShader::updateState(Renderer *renderer, AbstractMaterial *newEffect, AbstractMaterial *oldEffect, Renderer::Updates updates) -{ - Q_ASSERT(oldEffect == 0 || newEffect->type() == oldEffect->type()); - DistanceFieldTextMaterial *material = static_cast<DistanceFieldTextMaterial *>(newEffect); - DistanceFieldTextMaterial *oldMaterial = static_cast<DistanceFieldTextMaterial *>(oldEffect); - - if (oldMaterial == 0 - || material->color() != oldMaterial->color() - || (updates & Renderer::UpdateOpacity)) { - QVector4D color(material->color().redF(), material->color().greenF(), - material->color().blueF(), material->color().alphaF()); - color *= renderer->renderOpacity(); - m_program.setUniformValue(m_color_id, color); - } - - bool updateRange = false; - if (oldMaterial == 0 - || material->glyphCache()->fontScale() != oldMaterial->glyphCache()->fontScale()) { - m_fontScale = material->glyphCache()->fontScale(); - updateRange = true; - } - if (updates & Renderer::UpdateMatrices) { - m_program.setUniformValue(m_matrix_id, renderer->combinedMatrix()); - m_matrixScale = qSqrt(renderer->modelViewMatrix().top().determinant()); - updateRange = true; - } - if (updateRange) - updateAlphaRange(); - - bool updated = material->updateTexture(); - Q_ASSERT(!material->texture().isNull()); - - Q_ASSERT(oldMaterial == 0 || !oldMaterial->texture().isNull()); - if (updated - || oldMaterial == 0 - || oldMaterial->texture()->textureId() != material->texture()->textureId()) { - m_program.setUniformValue(m_textureScale_id, QVector2D(1.0 / material->glyphCache()->textureSize().width(), - 1.0 / material->glyphCache()->textureSize().height())); - renderer->setTexture(0, material->texture()); - - if (updated) { - // Set the mag/min filters to be linear. We only need to do this when the texture - // has been recreated. - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); - glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); - } - } -} - -DistanceFieldTextMaterial::DistanceFieldTextMaterial() - : m_texture(0), m_glyph_cache(0) -{ - setFlag(Blending, true); -} - -DistanceFieldTextMaterial::~DistanceFieldTextMaterial() -{ -} - -AbstractMaterialType *DistanceFieldTextMaterial::type() const -{ - static AbstractMaterialType type; - return &type; -} - -AbstractMaterialShader *DistanceFieldTextMaterial::createShader() const -{ - return new DistanceFieldTextMaterialShader; -} - -bool DistanceFieldTextMaterial::updateTexture() -{ - QSize glyphCacheSize = m_glyph_cache->textureSize(); - if (glyphCacheSize != m_size) { - QSGPlainTexture *t = new QSGPlainTexture; - t->setTextureId(m_glyph_cache->texture()); - t->setTextureSize(glyphCacheSize); - t->setOwnsTexture(false); - m_texture = QSGTextureRef(t); - - m_size = glyphCacheSize; - - return true; - } else { - return false; - } -} - -int DistanceFieldTextMaterial::compare(const AbstractMaterial *o) const -{ - Q_ASSERT(o && type() == o->type()); - const DistanceFieldTextMaterial *other = static_cast<const DistanceFieldTextMaterial *>(o); - if (m_glyph_cache->fontScale() != other->m_glyph_cache->fontScale()) { - qreal s1 = m_glyph_cache->fontScale(); - qreal s2 = other->m_glyph_cache->fontScale(); - return int(s2 < s1) - int(s1 < s2); - } - QRgb c1 = m_color.rgba(); - QRgb c2 = other->m_color.rgba(); - return int(c2 < c1) - int(c1 < c2); -} - - -class DistanceFieldStyledTextMaterialShader : public DistanceFieldTextMaterialShader -{ -public: - DistanceFieldStyledTextMaterialShader(); - - virtual void updateState(Renderer *renderer, AbstractMaterial *newEffect, AbstractMaterial *oldEffect, Renderer::Updates updates); - -protected: - virtual void initialize(); - virtual const char *fragmentShader() const = 0; - - int m_styleColor_id; -}; - -DistanceFieldStyledTextMaterialShader::DistanceFieldStyledTextMaterialShader() - : DistanceFieldTextMaterialShader() -{ -} - -void DistanceFieldStyledTextMaterialShader::initialize() -{ - DistanceFieldTextMaterialShader::initialize(); - m_styleColor_id = m_program.uniformLocation("styleColor"); -} - -void DistanceFieldStyledTextMaterialShader::updateState(Renderer *renderer, AbstractMaterial *newEffect, AbstractMaterial *oldEffect, Renderer::Updates updates) -{ - DistanceFieldTextMaterialShader::updateState(renderer, newEffect, oldEffect, updates); - - DistanceFieldStyledTextMaterial *material = static_cast<DistanceFieldStyledTextMaterial *>(newEffect); - DistanceFieldStyledTextMaterial *oldMaterial = static_cast<DistanceFieldStyledTextMaterial *>(oldEffect); - - if (oldMaterial == 0 - || material->styleColor() != oldMaterial->styleColor() - || (updates & Renderer::UpdateOpacity)) { - QVector4D color(material->styleColor().redF(), material->styleColor().greenF(), - material->styleColor().blueF(), material->styleColor().alphaF()); - color *= renderer->renderOpacity(); - m_program.setUniformValue(m_styleColor_id, color); - } -} - -DistanceFieldStyledTextMaterial::DistanceFieldStyledTextMaterial() - : DistanceFieldTextMaterial() -{ -} - -DistanceFieldStyledTextMaterial::~DistanceFieldStyledTextMaterial() -{ -} - -int DistanceFieldStyledTextMaterial::compare(const AbstractMaterial *o) const -{ - Q_ASSERT(o && type() == o->type()); - const DistanceFieldStyledTextMaterial *other = static_cast<const DistanceFieldStyledTextMaterial *>(o); - if (m_styleColor != other->m_styleColor) { - QRgb c1 = m_styleColor.rgba(); - QRgb c2 = other->m_styleColor.rgba(); - return int(c2 < c1) - int(c1 < c2); - } - return DistanceFieldTextMaterial::compare(o); -} - - -class DistanceFieldOutlineTextMaterialShader : public DistanceFieldStyledTextMaterialShader -{ -public: - DistanceFieldOutlineTextMaterialShader(); - - virtual void updateState(Renderer *renderer, AbstractMaterial *newEffect, AbstractMaterial *oldEffect, Renderer::Updates updates); - -protected: - virtual void initialize(); - virtual const char *fragmentShader() const; - - void updateOutlineAlphaRange(); - - int m_outlineAlphaMax0_id; - int m_outlineAlphaMax1_id; -}; - -const char *DistanceFieldOutlineTextMaterialShader::fragmentShader() const { - return - "varying highp vec2 sampleCoord; \n" - "uniform sampler2D texture; \n" - "uniform lowp vec4 color; \n" - "uniform lowp vec4 styleColor; \n" - "uniform highp float alphaMin; \n" - "uniform highp float alphaMax; \n" - "uniform highp float outlineAlphaMax0; \n" - "uniform highp float outlineAlphaMax1; \n" - "void main() { \n" - " mediump float d = texture2D(texture, sampleCoord).a; \n" - " gl_FragColor = mix(styleColor, color, smoothstep(alphaMin, alphaMax, d)) \n" - " * smoothstep(outlineAlphaMax0, outlineAlphaMax1, d); \n" - "}"; -} - -DistanceFieldOutlineTextMaterialShader::DistanceFieldOutlineTextMaterialShader() - : DistanceFieldStyledTextMaterialShader() -{ -} - -void DistanceFieldOutlineTextMaterialShader::initialize() -{ - DistanceFieldStyledTextMaterialShader::initialize(); - m_outlineAlphaMax0_id = m_program.uniformLocation("outlineAlphaMax0"); - m_outlineAlphaMax1_id = m_program.uniformLocation("outlineAlphaMax1"); -} - -void DistanceFieldOutlineTextMaterialShader::updateOutlineAlphaRange() -{ - qreal outlineLimit = qMax(qreal(0.1), qreal(0.5 - 0.1 / m_fontScale)); - - qreal combinedScale = m_fontScale * m_matrixScale; - qreal alphaMin = qMax(0.0, 0.5 - 0.07 / combinedScale); - qreal styleAlphaMin0 = qMax(0.0, outlineLimit - 0.07 / combinedScale); - qreal styleAlphaMin1 = qMin(qreal(outlineLimit + 0.07 / combinedScale), alphaMin); - m_program.setUniformValue(m_outlineAlphaMax0_id, GLfloat(styleAlphaMin0)); - m_program.setUniformValue(m_outlineAlphaMax1_id, GLfloat(styleAlphaMin1)); -} - -void DistanceFieldOutlineTextMaterialShader::updateState(Renderer *renderer, AbstractMaterial *newEffect, AbstractMaterial *oldEffect, Renderer::Updates updates) -{ - DistanceFieldStyledTextMaterialShader::updateState(renderer, newEffect, oldEffect, updates); - - DistanceFieldOutlineTextMaterial *material = static_cast<DistanceFieldOutlineTextMaterial *>(newEffect); - DistanceFieldOutlineTextMaterial *oldMaterial = static_cast<DistanceFieldOutlineTextMaterial *>(oldEffect); - - if (oldMaterial == 0 - || material->glyphCache()->fontScale() != oldMaterial->glyphCache()->fontScale() - || updates & Renderer::UpdateMatrices) - updateOutlineAlphaRange(); -} - - -DistanceFieldOutlineTextMaterial::DistanceFieldOutlineTextMaterial() - : DistanceFieldStyledTextMaterial() -{ -} - -DistanceFieldOutlineTextMaterial::~DistanceFieldOutlineTextMaterial() -{ -} - -AbstractMaterialType *DistanceFieldOutlineTextMaterial::type() const -{ - static AbstractMaterialType type; - return &type; -} - -AbstractMaterialShader *DistanceFieldOutlineTextMaterial::createShader() const -{ - return new DistanceFieldOutlineTextMaterialShader; -} - - -class DistanceFieldShiftedStyleTextMaterialShader : public DistanceFieldStyledTextMaterialShader -{ -public: - DistanceFieldShiftedStyleTextMaterialShader(); - - virtual void updateState(Renderer *renderer, AbstractMaterial *newEffect, AbstractMaterial *oldEffect, Renderer::Updates updates); - -protected: - virtual void initialize(); - virtual const char *fragmentShader() const; - - void updateShift(const DistanceFieldGlyphCache *cache, const QPointF& shift); - - int m_shift_id; -}; - -DistanceFieldShiftedStyleTextMaterialShader::DistanceFieldShiftedStyleTextMaterialShader() - : DistanceFieldStyledTextMaterialShader() -{ -} - -void DistanceFieldShiftedStyleTextMaterialShader::initialize() -{ - DistanceFieldStyledTextMaterialShader::initialize(); - m_shift_id = m_program.uniformLocation("shift"); -} - -void DistanceFieldShiftedStyleTextMaterialShader::updateState(Renderer *renderer, AbstractMaterial *newEffect, AbstractMaterial *oldEffect, Renderer::Updates updates) -{ - DistanceFieldStyledTextMaterialShader::updateState(renderer, newEffect, oldEffect, updates); - - DistanceFieldShiftedStyleTextMaterial *material = static_cast<DistanceFieldShiftedStyleTextMaterial *>(newEffect); - DistanceFieldShiftedStyleTextMaterial *oldMaterial = static_cast<DistanceFieldShiftedStyleTextMaterial *>(oldEffect); - - if (oldMaterial == 0 - || oldMaterial->glyphCache()->fontScale() != material->glyphCache()->fontScale() - || oldMaterial->shift() != material->shift() - || oldMaterial->texture()->textureSize() != material->texture()->textureSize()) { - updateShift(material->glyphCache(), material->shift()); - } -} - -void DistanceFieldShiftedStyleTextMaterialShader::updateShift(const DistanceFieldGlyphCache *cache, const QPointF &shift) -{ - QPointF texel(1.0 / cache->fontScale() / cache->textureSize().width() * shift.x(), - 1.0 / cache->fontScale() / cache->textureSize().height() * shift.y()); - m_program.setUniformValue(m_shift_id, texel); -} - -const char *DistanceFieldShiftedStyleTextMaterialShader::fragmentShader() const { - return - "varying highp vec2 sampleCoord; \n" - "uniform sampler2D texture; \n" - "uniform lowp vec4 color; \n" - "uniform lowp vec4 styleColor; \n" - "uniform highp float alphaMin; \n" - "uniform highp float alphaMax; \n" - "uniform highp vec2 shift; \n" - "void main() { \n" - " highp float a = smoothstep(alphaMin, alphaMax, texture2D(texture, sampleCoord).a);\n" - " highp vec4 glyph = color * a; \n" - " highp vec4 shifted = styleColor * smoothstep(alphaMin, \n" - " alphaMax, \n" - " texture2D(texture, sampleCoord - shift).a); \n" - " gl_FragColor = vec4(shifted.rgb * (1.0 - a) + glyph.rgb, \n" - " shifted.a * (1.0 - a) + glyph.a); \n" - "}"; -} - -DistanceFieldShiftedStyleTextMaterial::DistanceFieldShiftedStyleTextMaterial() - : DistanceFieldStyledTextMaterial() -{ -} - -DistanceFieldShiftedStyleTextMaterial::~DistanceFieldShiftedStyleTextMaterial() -{ -} - -AbstractMaterialType *DistanceFieldShiftedStyleTextMaterial::type() const -{ - static AbstractMaterialType type; - return &type; -} - -AbstractMaterialShader *DistanceFieldShiftedStyleTextMaterial::createShader() const -{ - return new DistanceFieldShiftedStyleTextMaterialShader; -} - -QT_END_NAMESPACE |