From 6c8378eaf1edbbefe6aaa3672b0127816a004fd7 Mon Sep 17 00:00:00 2001 From: Kent Hansen Date: Wed, 23 Nov 2011 15:14:07 +0100 Subject: Say hello to QtQuick module This change moves the QtQuick 2 types and C++ API (including SceneGraph) to a new module (AKA library), QtQuick. 99% of this change is moving files from src/declarative to src/quick, and from tests/auto/declarative to tests/auto/qtquick2. The loading of QtQuick 2 ("import QtQuick 2.0") is now delegated to a plugin, src/imports/qtquick2, just like it's done for QtQuick 1. All tools, examples, and tests that use QtQuick C++ API have gotten "QT += quick" or "QT += quick-private" added to their .pro file. A few additional internal QtDeclarative classes had to be exported (via Q_DECLARATIVE_PRIVATE_EXPORT) since they're needed by the QtQuick 2 implementation. The old header locations (e.g. QtDeclarative/qquickitem.h) will still be supported for some time, but will produce compile-time warnings. (To avoid the QtQuick implementation using the compatibility headers (since QtDeclarative's includepath comes first), a few include statements were modified, e.g. from "#include " to "#include ".) There's a change in qtbase that automatically adds QtQuick to the module list if QtDeclarative is used. Together with the compatibility headers, this should help reduce the migration pain for existing projects. In theory, simply getting an existing QtDeclarative-based project to compile and link shouldn't require any changes for now -- but porting to the new scheme is of course recommended, and will eventually become mandatory. Task-number: QTBUG-22889 Reviewed-by: Lars Knoll Change-Id: Ia52be9373172ba2f37e7623231ecb060316c96a7 Reviewed-by: Kent Hansen Reviewed-by: Sergio Ahumada --- .../qsgdefaultdistancefieldglyphcache.cpp | 324 +++++++++++++++++++++ 1 file changed, 324 insertions(+) create mode 100644 src/quick/scenegraph/qsgdefaultdistancefieldglyphcache.cpp (limited to 'src/quick/scenegraph/qsgdefaultdistancefieldglyphcache.cpp') diff --git a/src/quick/scenegraph/qsgdefaultdistancefieldglyphcache.cpp b/src/quick/scenegraph/qsgdefaultdistancefieldglyphcache.cpp new file mode 100644 index 0000000000..95ccc8f437 --- /dev/null +++ b/src/quick/scenegraph/qsgdefaultdistancefieldglyphcache.cpp @@ -0,0 +1,324 @@ +/**************************************************************************** +** +** 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. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** 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. +** +** 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. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qsgdefaultdistancefieldglyphcache_p.h" + +#include +#include + +QT_BEGIN_NAMESPACE + +QHash QSGDefaultDistanceFieldGlyphCache::m_textures_data; + +QSGDefaultDistanceFieldGlyphCache::DistanceFieldTextureData *QSGDefaultDistanceFieldGlyphCache::textureData(QOpenGLContext *c) +{ + QString key = QString::fromLatin1("%1_%2_%3_%4") + .arg(font().familyName()) + .arg(font().styleName()) + .arg(font().weight()) + .arg(font().style()); + return m_textures_data[key].value(c); +} + +QSGDefaultDistanceFieldGlyphCache::QSGDefaultDistanceFieldGlyphCache(QSGDistanceFieldGlyphCacheManager *man, QOpenGLContext *c, const QRawFont &font) + : QSGDistanceFieldGlyphCache(man, c, font) + , m_maxTextureSize(0) +{ + m_textureData = textureData(c); +} + +void QSGDefaultDistanceFieldGlyphCache::requestGlyphs(const QVector &glyphs) +{ + int count = glyphs.count(); + + // Avoid useless and costly glyph re-generation + if (cacheIsFull() && !m_textureData->unusedGlyphs.isEmpty()) { + for (int i = 0; i < count; ++i) { + glyph_t glyphIndex = glyphs.at(i); + if (containsGlyph(glyphIndex) && m_textureData->unusedGlyphs.contains(glyphIndex)) + m_textureData->unusedGlyphs.remove(glyphIndex); + } + } + + QList glyphPositions; + QVector glyphsToRender; + + for (int i = 0; i < count; ++i) { + glyph_t glyphIndex = glyphs.at(i); + + if (++m_textureData->glyphRefCount[glyphIndex] == 1) + m_textureData->unusedGlyphs.remove(glyphIndex); + + if (cacheIsFull() && m_textureData->unusedGlyphs.isEmpty()) + continue; + + GlyphPosition p; + p.glyph = glyphIndex; + p.position = QPointF(m_textureData->currX, m_textureData->currY); + + if (!cacheIsFull()) { + m_textureData->currX += QT_DISTANCEFIELD_TILESIZE(doubleGlyphResolution()); + if (m_textureData->currX >= maxTextureSize()) { + m_textureData->currX = 0; + m_textureData->currY += QT_DISTANCEFIELD_TILESIZE(doubleGlyphResolution()); + } + } else { + // Recycle glyphs + if (!m_textureData->unusedGlyphs.isEmpty()) { + glyph_t unusedGlyph = *m_textureData->unusedGlyphs.constBegin(); + TexCoord unusedCoord = glyphTexCoord(unusedGlyph); + p.position = QPointF(unusedCoord.x, unusedCoord.y); + m_textureData->unusedGlyphs.remove(unusedGlyph); + removeGlyph(unusedGlyph); + } + } + + if (p.position.y() < maxTextureSize()) { + glyphPositions.append(p); + glyphsToRender.append(glyphIndex); + } + } + + addGlyphPositions(glyphPositions); + markGlyphsToRender(glyphsToRender); +} + +void QSGDefaultDistanceFieldGlyphCache::storeGlyphs(const QHash &glyphs) +{ + int requiredWidth = maxTextureSize(); + int rows = 128 / (requiredWidth / QT_DISTANCEFIELD_TILESIZE(doubleGlyphResolution())); // Enough rows to fill the latin1 set by default.. + int requiredHeight = qMin(maxTextureSize(), + qMax(m_textureData->currY + QT_DISTANCEFIELD_TILESIZE(doubleGlyphResolution()), + QT_DISTANCEFIELD_TILESIZE(doubleGlyphResolution()) * rows)); + + resizeTexture((requiredWidth), (requiredHeight)); + glBindTexture(GL_TEXTURE_2D, m_textureData->texture); + + QVector glyphTextures; + + QHash::const_iterator it; + for (it = glyphs.constBegin(); it != glyphs.constEnd(); ++it) { + glyph_t glyphIndex = it.key(); + TexCoord c = glyphTexCoord(glyphIndex); + + glyphTextures.append(glyphIndex); + + QImage glyph = it.value(); + + if (useWorkaroundBrokenFBOReadback()) { + uchar *inBits = glyph.scanLine(0); + uchar *outBits = m_textureData->image.scanLine(int(c.y)) + int(c.x); + for (int y = 0; y < glyph.height(); ++y) { + qMemCopy(outBits, inBits, glyph.width()); + inBits += glyph.bytesPerLine(); + outBits += m_textureData->image.bytesPerLine(); + } + } + + glTexSubImage2D(GL_TEXTURE_2D, 0, c.x, c.y, glyph.width(), glyph.height(), GL_ALPHA, GL_UNSIGNED_BYTE, glyph.constBits()); + } + + Texture t; + t.textureId = m_textureData->texture; + t.size = m_textureData->size; + addGlyphTextures(glyphTextures, t); +} + +void QSGDefaultDistanceFieldGlyphCache::releaseGlyphs(const QVector &glyphs) +{ + int count = glyphs.count(); + for (int i = 0; i < count; ++i) { + glyph_t glyphIndex = glyphs.at(i); + if (--m_textureData->glyphRefCount[glyphIndex] == 0 && !glyphTexCoord(glyphIndex).isNull()) + m_textureData->unusedGlyphs.insert(glyphIndex); + } +} + +void QSGDefaultDistanceFieldGlyphCache::createTexture(int width, int height) +{ + if (useWorkaroundBrokenFBOReadback() && m_textureData->image.isNull()) + m_textureData->image = QImage(width, height, QImage::Format_Indexed8); + + while (glGetError() != GL_NO_ERROR) { } + + glGenTextures(1, &m_textureData->texture); + glBindTexture(GL_TEXTURE_2D, m_textureData->texture); + + glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, width, height, 0, GL_ALPHA, GL_UNSIGNED_BYTE, 0); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); + + m_textureData->size = QSize(width, height); + + GLuint error = glGetError(); + if (error != GL_NO_ERROR) { + glBindTexture(GL_TEXTURE_2D, 0); + glDeleteTextures(1, &m_textureData->texture); + m_textureData->texture = 0; + } + +} + +void QSGDefaultDistanceFieldGlyphCache::resizeTexture(int width, int height) +{ + int oldWidth = m_textureData->size.width(); + int oldHeight = m_textureData->size.height(); + if (width == oldWidth && height == oldHeight) + return; + + GLuint oldTexture = m_textureData->texture; + createTexture(width, height); + + if (!oldTexture) + return; + + updateTexture(oldTexture, m_textureData->texture, m_textureData->size); + + if (useWorkaroundBrokenFBOReadback()) { + glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, oldWidth, oldHeight, GL_ALPHA, GL_UNSIGNED_BYTE, m_textureData->image.constBits()); + m_textureData->image = m_textureData->image.copy(0, 0, width, height); + glDeleteTextures(1, &oldTexture); + return; + } + + if (!m_textureData->blitProgram) + m_textureData->createBlitProgram(); + + Q_ASSERT(m_textureData->blitProgram); + + if (!m_textureData->fbo) + ctx->functions()->glGenFramebuffers(1, &m_textureData->fbo); + ctx->functions()->glBindFramebuffer(GL_FRAMEBUFFER, m_textureData->fbo); + + GLuint tmp_texture; + glGenTextures(1, &tmp_texture); + glBindTexture(GL_TEXTURE_2D, tmp_texture); + glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, oldWidth, oldHeight, 0, + GL_RGBA, GL_UNSIGNED_BYTE, NULL); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); + glBindTexture(GL_TEXTURE_2D, 0); + ctx->functions()->glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, + GL_TEXTURE_2D, tmp_texture, 0); + + ctx->functions()->glActiveTexture(GL_TEXTURE0); + glBindTexture(GL_TEXTURE_2D, oldTexture); + + // save current render states + GLboolean stencilTestEnabled; + GLboolean depthTestEnabled; + GLboolean scissorTestEnabled; + GLboolean blendEnabled; + GLint viewport[4]; + GLint oldProgram; + glGetBooleanv(GL_STENCIL_TEST, &stencilTestEnabled); + glGetBooleanv(GL_DEPTH_TEST, &depthTestEnabled); + glGetBooleanv(GL_SCISSOR_TEST, &scissorTestEnabled); + glGetBooleanv(GL_BLEND, &blendEnabled); + glGetIntegerv(GL_VIEWPORT, &viewport[0]); + glGetIntegerv(GL_CURRENT_PROGRAM, &oldProgram); + + glDisable(GL_STENCIL_TEST); + glDisable(GL_DEPTH_TEST); + glDisable(GL_SCISSOR_TEST); + glDisable(GL_BLEND); + + glViewport(0, 0, oldWidth, oldHeight); + + ctx->functions()->glVertexAttribPointer(QT_VERTEX_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, m_textureData->blitVertexCoordinateArray); + ctx->functions()->glVertexAttribPointer(QT_TEXTURE_COORDS_ATTR, 2, GL_FLOAT, GL_FALSE, 0, m_textureData->blitTextureCoordinateArray); + + m_textureData->blitProgram->bind(); + m_textureData->blitProgram->enableAttributeArray(int(QT_VERTEX_COORDS_ATTR)); + m_textureData->blitProgram->enableAttributeArray(int(QT_TEXTURE_COORDS_ATTR)); + m_textureData->blitProgram->disableAttributeArray(int(QT_OPACITY_ATTR)); + m_textureData->blitProgram->setUniformValue("imageTexture", GLuint(0)); + + glDrawArrays(GL_TRIANGLE_FAN, 0, 4); + + glBindTexture(GL_TEXTURE_2D, m_textureData->texture); + + glCopyTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, 0, 0, oldWidth, oldHeight); + + ctx->functions()->glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, + GL_RENDERBUFFER, 0); + glDeleteTextures(1, &tmp_texture); + glDeleteTextures(1, &oldTexture); + + ctx->functions()->glBindFramebuffer(GL_FRAMEBUFFER, 0); + + // restore render states + if (stencilTestEnabled) + glEnable(GL_STENCIL_TEST); + if (depthTestEnabled) + glEnable(GL_DEPTH_TEST); + if (scissorTestEnabled) + glEnable(GL_SCISSOR_TEST); + if (blendEnabled) + glEnable(GL_BLEND); + glViewport(viewport[0], viewport[1], viewport[2], viewport[3]); + ctx->functions()->glUseProgram(oldProgram); +} + +bool QSGDefaultDistanceFieldGlyphCache::useWorkaroundBrokenFBOReadback() const +{ + static bool set = false; + static bool useWorkaround = false; + if (!set) { + QOpenGLContextPrivate *ctx_p = static_cast(QOpenGLContextPrivate::get(ctx)); + useWorkaround = ctx_p->workaround_brokenFBOReadBack; + set = true; + } + return useWorkaround; +} + +int QSGDefaultDistanceFieldGlyphCache::maxTextureSize() const +{ + if (!m_maxTextureSize) + glGetIntegerv(GL_MAX_TEXTURE_SIZE, &m_maxTextureSize); + return m_maxTextureSize; +} + +QT_END_NAMESPACE -- cgit v1.2.3