diff options
Diffstat (limited to 'src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp')
| -rw-r--r-- | src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp | 33 |
1 files changed, 22 insertions, 11 deletions
diff --git a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp index f702f13359..fa8b0d0612 100644 --- a/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp +++ b/src/opengl/gl2paintengineex/qpaintengineex_opengl2.cpp @@ -1436,19 +1436,30 @@ void QGL2PaintEngineEx::drawStaticTextItem(QStaticTextItem *textItem) ensureActive(); - QFontEngineGlyphCache::Type glyphType = textItem->fontEngine()->glyphFormat >= 0 - ? QFontEngineGlyphCache::Type(textItem->fontEngine()->glyphFormat) - : d->glyphCacheType; - if (glyphType == QFontEngineGlyphCache::Raster_RGBMask) { - if (d->device->alphaRequested() || state()->matrix.type() > QTransform::TxTranslate - || (state()->composition_mode != QPainter::CompositionMode_Source - && state()->composition_mode != QPainter::CompositionMode_SourceOver)) - { - glyphType = QFontEngineGlyphCache::Raster_A8; + QPainterState *s = state(); + float det = s->matrix.determinant(); + + // don't try to cache huge fonts or vastly transformed fonts + QFontEngine *fontEngine = textItem->fontEngine(); + const qreal pixelSize = fontEngine->fontDef.pixelSize; + if (pixelSize * pixelSize * qAbs(det) < QT_MAX_CACHED_GLYPH_SIZE * QT_MAX_CACHED_GLYPH_SIZE || + det < 0.25f || det > 4.f) { + QFontEngineGlyphCache::Type glyphType = fontEngine->glyphFormat >= 0 + ? QFontEngineGlyphCache::Type(textItem->fontEngine()->glyphFormat) + : d->glyphCacheType; + if (glyphType == QFontEngineGlyphCache::Raster_RGBMask) { + if (d->device->alphaRequested() || s->matrix.type() > QTransform::TxTranslate + || (s->composition_mode != QPainter::CompositionMode_Source + && s->composition_mode != QPainter::CompositionMode_SourceOver)) + { + glyphType = QFontEngineGlyphCache::Raster_A8; + } } - } - d->drawCachedGlyphs(glyphType, textItem); + d->drawCachedGlyphs(glyphType, textItem); + } else { + QPaintEngineEx::drawStaticTextItem(textItem); + } } bool QGL2PaintEngineEx::drawTexture(const QRectF &dest, GLuint textureId, const QSize &size, const QRectF &src) |