Qt.git - Qt s a cross-platform application framework that is used for developing application software that can be run on various software and hardware platforms with little or no change in the underlying codebase, while still being a native application with native capabilities and speed.

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d---------	qtablewidget	130	const qreal pixelSize = ti.fontEngine->fontDef.pixelSize; if (pixelSize * pixelSize * qAbs(det) >= 64 * 64 \|\| det < 0.25f \|\| det > 4.f) drawCached = false; QFontEngineGlyphCache::Type glyphType = ti.fontEngine->glyphFormat >= 0 ? QFontEngineGlyphCache::Type(ti.fontEngine->glyphFormat) : d->glyphCacheType; if (glyphType == QFontEngineGlyphCache::Raster_RGBMask) { if (d->device->alphaRequested() \|\| txtype > QTransform::TxTranslate \|\| (state()->composition_mode != QPainter::CompositionMode_Source && state()->composition_mode != QPainter::CompositionMode_SourceOver)) { glyphType = QFontEngineGlyphCache::Raster_A8; } } if (drawCached) { QVarLengthArray<QFixedPoint> positions; QVarLengthArray<glyph_t> glyphs; QTransform matrix = QTransform::fromTranslate(p.x(), p.y()); ti.fontEngine->getGlyphPositions(ti.glyphs, matrix, ti.flags, glyphs, positions); { QStaticTextItem staticTextItem; staticTextItem.chars = const_cast<QChar >(ti.chars); staticTextItem.fontEngine = ti.fontEngine; staticTextItem.glyphs = glyphs.data(); staticTextItem.numChars = ti.num_chars; staticTextItem.numGlyphs = glyphs.size(); staticTextItem.glyphPositions = positions.data(); d->drawCachedGlyphs(glyphType, &staticTextItem); } return; } QPaintEngineEx::drawTextItem(p, ti); } namespace { class QOpenGLStaticTextUserData: public QStaticTextUserData { public: QOpenGLStaticTextUserData() : QStaticTextUserData(OpenGLUserData) { } ~QOpenGLStaticTextUserData() { } QGL2PEXVertexArray vertexCoordinateArray; QGL2PEXVertexArray textureCoordinateArray; }; } // #define QT_OPENGL_DRAWCACHEDGLYPHS_INDEX_ARRAY_VBO void QGL2PaintEngineExPrivate::drawCachedGlyphs(QFontEngineGlyphCache::Type glyphType, QStaticTextItem staticTextItem) { Q_Q(QGL2PaintEngineEx); QOpenGL2PaintEngineState s = q->state(); QGLTextureGlyphCache cache = (QGLTextureGlyphCache ) staticTextItem->fontEngine->glyphCache(ctx, glyphType, QTransform()); if (!cache \|\| cache->cacheType() != glyphType) { cache = new QGLTextureGlyphCache(ctx, glyphType, QTransform()); staticTextItem->fontEngine->setGlyphCache(ctx, cache); } cache->setPaintEnginePrivate(this); cache->populate(staticTextItem->fontEngine, staticTextItem->numGlyphs, staticTextItem->glyphs, staticTextItem->glyphPositions); if (cache->width() == 0 \|\| cache->height() == 0) return; transferMode(TextDrawingMode); int margin = cache->glyphMargin(); GLfloat dx = 1.0 / cache->width(); GLfloat dy = 1.0 / cache->height(); bool recreateVertexArrays = false; if (staticTextItem->userDataNeedsUpdate) recreateVertexArrays = true; else if (staticTextItem->userData == 0) recreateVertexArrays = true; else if (staticTextItem->userData->type != QStaticTextUserData::OpenGLUserData) recreateVertexArrays = true; // Use global arrays by default QGL2PEXVertexArray vertexCoordinates = &vertexCoordinateArray; QGL2PEXVertexArray textureCoordinates = &textureCoordinateArray; if (staticTextItem->useBackendOptimizations) { QOpenGLStaticTextUserData userData = 0; if (staticTextItem->userData == 0 \|\| staticTextItem->userData->type != QStaticTextUserData::OpenGLUserData) { userData = new QOpenGLStaticTextUserData(); staticTextItem->setUserData(userData); } else { userData = static_cast<QOpenGLStaticTextUserData>(staticTextItem->userData); } // Use cache if backend optimizations is turned on vertexCoordinates = &userData->vertexCoordinateArray; textureCoordinates = &userData->textureCoordinateArray; } if (recreateVertexArrays) { vertexCoordinates->clear(); textureCoordinates->clear(); for (int i=0; i<staticTextItem->numGlyphs; ++i) { const QTextureGlyphCache::Coord &c = cache->coords.value(staticTextItem->glyphs[i]); int x = staticTextItem->glyphPositions[i].x.toInt() + c.baseLineX - margin; int y = staticTextItem->glyphPositions[i].y.toInt() - c.baseLineY - margin; vertexCoordinates->addQuad(QRectF(x, y, c.w, c.h)); textureCoordinates->addQuad(QRectF(c.xdx, c.ydy, c.w dx, c.h * dy)); } staticTextItem->userDataNeedsUpdate = false; } if (elementIndices.size() < staticTextItem->numGlyphs6) { Q_ASSERT(elementIndices.size() % 6 == 0); int j = elementIndices.size() / 6 4; while (j < staticTextItem->numGlyphs4) { elementIndices.append(j + 0); elementIndices.append(j + 0); elementIndices.append(j + 1); elementIndices.append(j + 2); elementIndices.append(j + 3); elementIndices.append(j + 3); j += 4; } #if defined(QT_OPENGL_DRAWCACHEDGLYPHS_INDEX_ARRAY_VBO) if (elementIndicesVBOId == 0) glGenBuffers(1, &elementIndicesVBOId); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, elementIndicesVBOId); glBufferData(GL_ELEMENT_ARRAY_BUFFER, elementIndices.size() sizeof(GLushort), elementIndices.constData(), GL_STATIC_DRAW); #endif } else { #if defined(QT_OPENGL_DRAWCACHEDGLYPHS_INDEX_ARRAY_VBO) glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, elementIndicesVBOId); #endif } setVertexAttributePointer(QT_VERTEX_COORDS_ATTR, (GLfloat)vertexCoordinates->data()); setVertexAttributePointer(QT_TEXTURE_COORDS_ATTR, (GLfloat)textureCoordinates->data()); if (addOffset) { addOffset = false; matrixDirty = true; } if (!snapToPixelGrid) { snapToPixelGrid = true; matrixDirty = true; } QBrush pensBrush = q->state()->pen.brush(); setBrush(pensBrush); if (glyphType == QFontEngineGlyphCache::Raster_RGBMask) { // Subpixel antialiasing without gamma correction QPainter::CompositionMode compMode = q->state()->composition_mode; Q_ASSERT(compMode == QPainter::CompositionMode_Source \|\| compMode == QPainter::CompositionMode_SourceOver); shaderManager->setMaskType(QGLEngineShaderManager::SubPixelMaskPass1); if (pensBrush.style() == Qt::SolidPattern) { // Solid patterns can get away with only one pass. QColor c = pensBrush.color(); qreal oldOpacity = q->state()->opacity; if (compMode == QPainter::CompositionMode_Source) { c = qt_premultiplyColor(c, q->state()->opacity); q->state()->opacity = 1; opacityUniformDirty = true; } compositionModeDirty = false; // I can handle this myself, thank you very much prepareForDraw(false); // Text always causes src pixels to be transparent // prepareForDraw() have set the opacity on the current shader, so the opacity state can now be reset. if (compMode == QPainter::CompositionMode_Source) { q->state()->opacity = oldOpacity; opacityUniformDirty = true; } glEnable(GL_BLEND); glBlendFunc(GL_CONSTANT_COLOR, GL_ONE_MINUS_SRC_COLOR); glBlendColor(c.redF(), c.greenF(), c.blueF(), c.alphaF()); } else { // Other brush styles need two passes. qreal oldOpacity = q->state()->opacity; if (compMode == QPainter::CompositionMode_Source) { q->state()->opacity = 1; opacityUniformDirty = true; pensBrush = Qt::white; setBrush(pensBrush); } compositionModeDirty = false; // I can handle this myself, thank you very much prepareForDraw(false); // Text always causes src pixels to be transparent glEnable(GL_BLEND); glBlendFunc(GL_ZERO, GL_ONE_MINUS_SRC_COLOR); glActiveTexture(GL_TEXTURE0 + QT_MASK_TEXTURE_UNIT); glBindTexture(GL_TEXTURE_2D, cache->texture()); updateTextureFilter(GL_TEXTURE_2D, GL_REPEAT, false); shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::MaskTexture), QT_MASK_TEXTURE_UNIT); #if defined(QT_OPENGL_DRAWCACHEDGLYPHS_INDEX_ARRAY_VBO) glDrawElements(GL_TRIANGLE_STRIP, 6 * staticTextItem->numGlyphs, GL_UNSIGNED_SHORT, 0); #else glDrawElements(GL_TRIANGLE_STRIP, 6 * staticTextItem->numGlyphs, GL_UNSIGNED_SHORT, elementIndices.data()); #endif shaderManager->setMaskType(QGLEngineShaderManager::SubPixelMaskPass2); if (compMode == QPainter::CompositionMode_Source) { q->state()->opacity = oldOpacity; opacityUniformDirty = true; pensBrush = q->state()->pen.brush(); setBrush(pensBrush); } compositionModeDirty = false; prepareForDraw(false); // Text always causes src pixels to be transparent glEnable(GL_BLEND); glBlendFunc(GL_ONE, GL_ONE); } compositionModeDirty = true; } else { // Greyscale/mono glyphs shaderManager->setMaskType(QGLEngineShaderManager::PixelMask); prepareForDraw(false); // Text always causes src pixels to be transparent } //### TODO: Gamma correction glActiveTexture(GL_TEXTURE0 + QT_MASK_TEXTURE_UNIT); if (lastMaskTextureUsed != cache->texture()) { glBindTexture(GL_TEXTURE_2D, cache->texture()); lastMaskTextureUsed = cache->texture(); } updateTextureFilter(GL_TEXTURE_2D, GL_REPEAT, s->matrix.type() > QTransform::TxTranslate); shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::MaskTexture), QT_MASK_TEXTURE_UNIT); #if defined(QT_OPENGL_DRAWCACHEDGLYPHS_INDEX_ARRAY_VBO) glDrawElements(GL_TRIANGLE_STRIP, 6 * staticTextItem->numGlyphs, GL_UNSIGNED_SHORT, 0); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); #else glDrawElements(GL_TRIANGLE_STRIP, 6 * staticTextItem->numGlyphs, GL_UNSIGNED_SHORT, elementIndices.data()); #endif } void QGL2PaintEngineEx::drawPixmapFragments(const QPainter::PixmapFragment fragments, int fragmentCount, const QPixmap &pixmap, QPainter::PixmapFragmentHints hints) { Q_D(QGL2PaintEngineEx); // Use fallback for extended composition modes. if (state()->composition_mode > QPainter::CompositionMode_Plus) { QPaintEngineEx::drawPixmapFragments(fragments, fragmentCount, pixmap, hints); return; } ensureActive(); d->drawPixmapFragments(fragments, fragmentCount, pixmap, hints); } void QGL2PaintEngineExPrivate::drawPixmapFragments(const QPainter::PixmapFragment fragments, int fragmentCount, const QPixmap &pixmap, QPainter::PixmapFragmentHints hints) { GLfloat dx = 1.0f / pixmap.size().width(); GLfloat dy = 1.0f / pixmap.size().height(); vertexCoordinateArray.clear(); textureCoordinateArray.clear(); opacityArray.reset(); if (addOffset) { addOffset = false; matrixDirty = true; } if (snapToPixelGrid) { snapToPixelGrid = false; matrixDirty = true; } bool allOpaque = true; for (int i = 0; i < fragmentCount; ++i) { qreal s = 0; qreal c = 1; if (fragments[i].rotation != 0) { s = qFastSin(fragments[i].rotation * Q_PI / 180); c = qFastCos(fragments[i].rotation * Q_PI / 180); } qreal right = 0.5 * fragments[i].scaleX * fragments[i].width; qreal bottom = 0.5 * fragments[i].scaleY * fragments[i].height; QGLPoint bottomRight(right * c - bottom * s, right * s + bottom * c); QGLPoint bottomLeft(-right * c - bottom * s, -right * s + bottom * c); vertexCoordinateArray.addVertex(bottomRight.x + fragments[i].x, bottomRight.y + fragments[i].y); vertexCoordinateArray.addVertex(-bottomLeft.x + fragments[i].x, -bottomLeft.y + fragments[i].y); vertexCoordinateArray.addVertex(-bottomRight.x + fragments[i].x, -bottomRight.y + fragments[i].y); vertexCoordinateArray.addVertex(-bottomRight.x + fragments[i].x, -bottomRight.y + fragments[i].y); vertexCoordinateArray.addVertex(bottomLeft.x + fragments[i].x, bottomLeft.y + fragments[i].y); vertexCoordinateArray.addVertex(bottomRight.x + fragments[i].x, bottomRight.y + fragments[i].y); QGLRect src(fragments[i].sourceLeft * dx, fragments[i].sourceTop * dy, (fragments[i].sourceLeft + fragments[i].width) * dx, (fragments[i].sourceTop + fragments[i].height) * dy); textureCoordinateArray.addVertex(src.right, src.bottom); textureCoordinateArray.addVertex(src.right, src.top); textureCoordinateArray.addVertex(src.left, src.top); textureCoordinateArray.addVertex(src.left, src.top); textureCoordinateArray.addVertex(src.left, src.bottom); textureCoordinateArray.addVertex(src.right, src.bottom); qreal opacity = fragments[i].opacity * q->state()->opacity; opacityArray << opacity << opacity << opacity << opacity << opacity << opacity; allOpaque &= (opacity >= 0.99f); } glActiveTexture(GL_TEXTURE0 + QT_IMAGE_TEXTURE_UNIT); QGLTexture texture = ctx->d_func()->bindTexture(pixmap, GL_TEXTURE_2D, GL_RGBA, QGLContext::InternalBindOption \| QGLContext::CanFlipNativePixmapBindOption); if (texture->options & QGLContext::InvertedYBindOption) { // Flip texture y-coordinate. QGLPoint data = textureCoordinateArray.data(); for (int i = 0; i < 6 * fragmentCount; ++i) data[i].y = 1 - data[i].y; } transferMode(ImageArrayDrawingMode); bool isBitmap = pixmap.isQBitmap(); bool isOpaque = !isBitmap && (!pixmap.hasAlphaChannel() \|\| (hints & QPainter::OpaqueHint)) && allOpaque; updateTextureFilter(GL_TEXTURE_2D, GL_CLAMP_TO_EDGE, q->state()->renderHints & QPainter::SmoothPixmapTransform, texture->id); // Setup for texture drawing currentBrush = noBrush; shaderManager->setSrcPixelType(isBitmap ? QGLEngineShaderManager::PatternSrc : QGLEngineShaderManager::ImageSrc); if (prepareForDraw(isOpaque)) shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::ImageTexture), QT_IMAGE_TEXTURE_UNIT); if (isBitmap) { QColor col = qt_premultiplyColor(q->state()->pen.color(), (GLfloat)q->state()->opacity); shaderManager->currentProgram()->setUniformValue(location(QGLEngineShaderManager::PatternColor), col); } glDrawArrays(GL_TRIANGLES, 0, 6 * fragmentCount); } bool QGL2PaintEngineEx::begin(QPaintDevice pdev) { Q_D(QGL2PaintEngineEx); // qDebug("QGL2PaintEngineEx::begin()"); if (pdev->devType() == QInternal::OpenGL) d->device = static_cast<QGLPaintDevice>(pdev); else d->device = QGLPaintDevice::getDevice(pdev); if (!d->device) return false; d->ctx = d->device->context(); d->ctx->d_ptr->active_engine = this; const QSize sz = d->device->size(); d->width = sz.width(); d->height = sz.height(); d->mode = BrushDrawingMode; d->brushTextureDirty = true; d->brushUniformsDirty = true; d->matrixUniformDirty = true; d->matrixDirty = true; d->compositionModeDirty = true; d->opacityUniformDirty = true; d->needsSync = true; d->useSystemClip = !systemClip().isEmpty(); d->currentBrush = QBrush(); d->dirtyStencilRegion = QRect(0, 0, d->width, d->height); d->stencilClean = true; // Calling begin paint should make the correct context current. So, any // code which calls into GL or otherwise needs a current context must // go after beginPaint: d->device->beginPaint(); #if !defined(QT_OPENGL_ES_2) bool success = qt_resolve_version_2_0_functions(d->ctx) && qt_resolve_buffer_extensions(d->ctx); Q_ASSERT(success); Q_UNUSED(success); #endif d->shaderManager = new QGLEngineShaderManager(d->ctx); glDisable(GL_STENCIL_TEST); glDisable(GL_DEPTH_TEST); glDisable(GL_SCISSOR_TEST); #if !defined(QT_OPENGL_ES_2) glDisable(GL_MULTISAMPLE); #endif d->glyphCacheType = QFontEngineGlyphCache::Raster_A8; #if !defined(QT_OPENGL_ES_2) #if defined(Q_WS_WIN) if (qt_cleartype_enabled) #endif d->glyphCacheType = QFontEngineGlyphCache::Raster_RGBMask; #endif #if defined(QT_OPENGL_ES_2) // OpenGL ES can't switch MSAA off, so if the gl paint device is // multisampled, it's always multisampled. d->multisamplingAlwaysEnabled = d->device->format().sampleBuffers(); #else d->multisamplingAlwaysEnabled = false; #endif return true; } bool QGL2PaintEngineEx::end() { Q_D(QGL2PaintEngineEx); QGLContext ctx = d->ctx; glUseProgram(0); d->transferMode(BrushDrawingMode); d->device->endPaint(); #if defined(Q_WS_X11) // On some (probably all) drivers, deleting an X pixmap which has been bound to a texture // before calling glFinish/swapBuffers renders garbage. Presumably this is because X deletes // the pixmap behind the driver's back before it's had a chance to use it. To fix this, we // reference all QPixmaps which have been bound to stop them being deleted and only deref // them here, after swapBuffers, where they can be safely deleted. ctx->d_func()->boundPixmaps.clear(); #endif d->ctx->d_ptr->active_engine = 0; d->resetGLState(); delete d->shaderManager; d->shaderManager = 0; d->currentBrush = QBrush(); #ifdef QT_OPENGL_CACHE_AS_VBOS if (!d->unusedVBOSToClean.isEmpty()) { glDeleteBuffers(d->unusedVBOSToClean.size(), d->unusedVBOSToClean.constData()); d->unusedVBOSToClean.clear(); } if (!d->unusedIBOSToClean.isEmpty()) { glDeleteBuffers(d->unusedIBOSToClean.size(), d->unusedIBOSToClean.constData()); d->unusedIBOSToClean.clear(); } #endif return false; } void QGL2PaintEngineEx::ensureActive() { Q_D(QGL2PaintEngineEx); QGLContext ctx = d->ctx; if (isActive() && ctx->d_ptr->active_engine != this) { ctx->d_ptr->active_engine = this; d->needsSync = true; } d->device->ensureActiveTarget(); if (d->needsSync) { d->transferMode(BrushDrawingMode); glViewport(0, 0, d->width, d->height); d->needsSync = false; d->lastMaskTextureUsed = 0; d->shaderManager->setDirty(); d->ctx->d_func()->syncGlState(); for (int i = 0; i < 3; ++i) d->vertexAttribPointers[i] = (GLfloat)-1; // Assume the pointers are clobbered setState(state()); } } void QGL2PaintEngineExPrivate::updateClipScissorTest() { Q_Q(QGL2PaintEngineEx); if (q->state()->clipTestEnabled) { glEnable(GL_STENCIL_TEST); glStencilFunc(GL_LEQUAL, q->state()->currentClip, ~GL_STENCIL_HIGH_BIT); } else { glDisable(GL_STENCIL_TEST); glStencilFunc(GL_ALWAYS, 0, 0xff); } #ifdef QT_GL_NO_SCISSOR_TEST currentScissorBounds = QRect(0, 0, width, height); #else QRect bounds = q->state()->rectangleClip; if (!q->state()->clipEnabled) { if (useSystemClip) bounds = systemClip.boundingRect(); else bounds = QRect(0, 0, width, height); } else { if (useSystemClip) bounds = bounds.intersected(systemClip.boundingRect()); else bounds = bounds.intersected(QRect(0, 0, width, height)); } currentScissorBounds = bounds; if (bounds == QRect(0, 0, width, height)) { glDisable(GL_SCISSOR_TEST); } else { glEnable(GL_SCISSOR_TEST); setScissor(bounds); } #endif } void QGL2PaintEngineExPrivate::setScissor(const QRect &rect) { const int left = rect.left(); const int width = rect.width(); const int bottom = height - (rect.top() + rect.height()); const int height = rect.height(); glScissor(left, bottom, width, height); } void QGL2PaintEngineEx::clipEnabledChanged() { Q_D(QGL2PaintEngineEx); state()->clipChanged = true; if (painter()->hasClipping()) d->regenerateClip(); else d->systemStateChanged(); } void QGL2PaintEngineExPrivate::clearClip(uint value) { dirtyStencilRegion -= currentScissorBounds; glStencilMask(0xff); glClearStencil(value); glClear(GL_STENCIL_BUFFER_BIT); glStencilMask(0x0); q->state()->needsClipBufferClear = false; } void QGL2PaintEngineExPrivate::writeClip(const QVectorPath &path, uint value) { transferMode(BrushDrawingMode); if (addOffset) { addOffset = false; matrixDirty = true; } if (snapToPixelGrid) { snapToPixelGrid = false; matrixDirty = true; } if (matrixDirty) updateMatrix(); stencilClean = false; const bool singlePass = !path.hasWindingFill() && (((q->state()->currentClip == maxClip - 1) && q->state()->clipTestEnabled) \|\| q->state()->needsClipBufferClear); const uint referenceClipValue = q->state()->needsClipBufferClear ? 1 : q->state()->currentClip; if (q->state()->needsClipBufferClear) clearClip(1); if (path.isEmpty()) { glEnable(GL_STENCIL_TEST); glStencilFunc(GL_LEQUAL, value, ~GL_STENCIL_HIGH_BIT); return; } if (q->state()->clipTestEnabled) glStencilFunc(GL_LEQUAL, q->state()->currentClip, ~GL_STENCIL_HIGH_BIT); else glStencilFunc(GL_ALWAYS, 0, 0xff); vertexCoordinateArray.clear(); vertexCoordinateArray.addPath(path, inverseScale, false); if (!singlePass) fillStencilWithVertexArray(vertexCoordinateArray, path.hasWindingFill()); glColorMask(false, false, false, false); glEnable(GL_STENCIL_TEST); useSimpleShader(); if (singlePass) { // Under these conditions we can set the new stencil value in a single // pass, by using the current value and the "new value" as the toggles glStencilFunc(GL_LEQUAL, referenceClipValue, ~GL_STENCIL_HIGH_BIT); glStencilOp(GL_KEEP, GL_INVERT, GL_INVERT); glStencilMask(value ^ referenceClipValue); drawVertexArrays(vertexCoordinateArray, GL_TRIANGLE_FAN); } else { glStencilOp(GL_KEEP, GL_REPLACE, GL_REPLACE); glStencilMask(0xff); if (!q->state()->clipTestEnabled && path.hasWindingFill()) { // Pass when any clip bit is set, set high bit glStencilFunc(GL_NOTEQUAL, GL_STENCIL_HIGH_BIT, ~GL_STENCIL_HIGH_BIT); composite(vertexCoordinateArray.boundingRect()); } // Pass when high bit is set, replace stencil value with new clip value glStencilFunc(GL_NOTEQUAL, value, GL_STENCIL_HIGH_BIT); composite(vertexCoordinateArray.boundingRect()); } glStencilFunc(GL_LEQUAL, value, ~GL_STENCIL_HIGH_BIT); glStencilMask(0); glColorMask(true, true, true, true); } void QGL2PaintEngineEx::clip(const QVectorPath &path, Qt::ClipOperation op) { // qDebug("QGL2PaintEngineEx::clip()"); Q_D(QGL2PaintEngineEx); state()->clipChanged = true; ensureActive(); if (op == Qt::ReplaceClip) { op = Qt::IntersectClip; if (d->hasClipOperations()) { d->systemStateChanged(); state()->canRestoreClip = false; } } #ifndef QT_GL_NO_SCISSOR_TEST if (!path.isEmpty() && op == Qt::IntersectClip && (path.shape() == QVectorPath::RectangleHint)) { const QPointF const points = reinterpret_cast<const QPointF>(path.points()); QRectF rect(points[0], points[2]); if (state()->matrix.type() <= QTransform::TxScale) { state()->rectangleClip = state()->rectangleClip.intersected(state()->matrix.mapRect(rect).toRect()); d->updateClipScissorTest(); return; } } #endif const QRect pathRect = state()->matrix.mapRect(path.controlPointRect()).toAlignedRect(); switch (op) { case Qt::NoClip: if (d->useSystemClip) { state()->clipTestEnabled = true; state()->currentClip = 1; } else { state()->clipTestEnabled = false; } state()->rectangleClip = QRect(0, 0, d->width, d->height); state()->canRestoreClip = false; d->updateClipScissorTest(); break; case Qt::IntersectClip: state()->rectangleClip = state()->rectangleClip.intersected(pathRect); d->updateClipScissorTest(); d->resetClipIfNeeded(); ++d->maxClip; d->writeClip(path, d->maxClip); state()->currentClip = d->maxClip; state()->clipTestEnabled = true; break; case Qt::UniteClip: { d->resetClipIfNeeded(); ++d->maxClip; if (state()->rectangleClip.isValid()) { QPainterPath path; path.addRect(state()->rectangleClip); // flush the existing clip rectangle to the depth buffer d->writeClip(qtVectorPathForPath(state()->matrix.inverted().map(path)), d->maxClip); } state()->clipTestEnabled = false; #ifndef QT_GL_NO_SCISSOR_TEST QRect oldRectangleClip = state()->rectangleClip; state()->rectangleClip = state()->rectangleClip.united(pathRect); d->updateClipScissorTest(); QRegion extendRegion = QRegion(state()->rectangleClip) - oldRectangleClip; if (!extendRegion.isEmpty()) { QPainterPath extendPath; extendPath.addRegion(extendRegion); // first clear the depth buffer in the extended region d->writeClip(qtVectorPathForPath(state()->matrix.inverted().map(extendPath)), 0); } #endif // now write the clip path d->writeClip(path, d->maxClip); state()->canRestoreClip = false; state()->currentClip = d->maxClip; state()->clipTestEnabled = true; break; } default: break; } } void QGL2PaintEngineExPrivate::regenerateClip() { systemStateChanged(); replayClipOperations(); } void QGL2PaintEngineExPrivate::systemStateChanged() { Q_Q(QGL2PaintEngineEx); q->state()->clipChanged = true; if (systemClip.isEmpty()) { useSystemClip = false; } else { if (q->paintDevice()->devType() == QInternal::Widget && currentClipWidget) { QWidgetPrivate widgetPrivate = qt_widget_private(currentClipWidget->window()); useSystemClip = widgetPrivate->extra && widgetPrivate->extra->inRenderWithPainter; } else { useSystemClip = true; } } q->state()->clipTestEnabled = false; q->state()->needsClipBufferClear = true; q->state()->currentClip = 1; maxClip = 1; q->state()->rectangleClip = useSystemClip ? systemClip.boundingRect() : QRect(0, 0, width, height); updateClipScissorTest(); if (systemClip.rectCount() == 1) { if (systemClip.boundingRect() == QRect(0, 0, width, height)) useSystemClip = false; #ifndef QT_GL_NO_SCISSOR_TEST // scissoring takes care of the system clip return; #endif } if (useSystemClip) { clearClip(0); QPainterPath path; path.addRegion(systemClip); q->state()->currentClip = 0; writeClip(qtVectorPathForPath(q->state()->matrix.inverted().map(path)), 1); q->state()->currentClip = 1; q->state()->clipTestEnabled = true; } } void QGL2PaintEngineEx::setState(QPainterState new_state) { // qDebug("QGL2PaintEngineEx::setState()"); Q_D(QGL2PaintEngineEx); QOpenGL2PaintEngineState s = static_cast<QOpenGL2PaintEngineState >(new_state); QOpenGL2PaintEngineState old_state = state(); QPaintEngineEx::setState(s); if (s->isNew) { // Newly created state object. The call to setState() // will either be followed by a call to begin(), or we are // setting the state as part of a save(). s->isNew = false; return; } // Setting the state as part of a restore(). if (old_state == s \|\| old_state->renderHintsChanged) renderHintsChanged(); if (old_state == s \|\| old_state->matrixChanged) d->matrixDirty = true; if (old_state == s \|\| old_state->compositionModeChanged) d->compositionModeDirty = true; if (old_state == s \|\| old_state->opacityChanged) d->opacityUniformDirty = true; if (old_state == s \|\| old_state->clipChanged) { if (old_state && old_state != s && old_state->canRestoreClip) { d->updateClipScissorTest(); glDepthFunc(GL_LEQUAL); } else { d->regenerateClip(); } } } QPainterState QGL2PaintEngineEx::createState(QPainterState orig) const { if (orig) const_cast<QGL2PaintEngineEx >(this)->ensureActive(); QOpenGL2PaintEngineState s; if (!orig) s = new QOpenGL2PaintEngineState(); else s = new QOpenGL2PaintEngineState(static_cast<QOpenGL2PaintEngineState >(orig)); s->matrixChanged = false; s->compositionModeChanged = false; s->opacityChanged = false; s->renderHintsChanged = false; s->clipChanged = false; return s; } QOpenGL2PaintEngineState::QOpenGL2PaintEngineState(QOpenGL2PaintEngineState &other) : QPainterState(other) { isNew = true; needsClipBufferClear = other.needsClipBufferClear; clipTestEnabled = other.clipTestEnabled; currentClip = other.currentClip; canRestoreClip = other.canRestoreClip; rectangleClip = other.rectangleClip; } QOpenGL2PaintEngineState::QOpenGL2PaintEngineState() { isNew = true; needsClipBufferClear = true; clipTestEnabled = false; canRestoreClip = true; } QOpenGL2PaintEngineState::~QOpenGL2PaintEngineState() { } QT_END_NAMESPACE