diff options
Diffstat (limited to 'src/quick/items/qquickitem.cpp')
-rw-r--r-- | src/quick/items/qquickitem.cpp | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/quick/items/qquickitem.cpp b/src/quick/items/qquickitem.cpp index f7b9a58329..22ee3f39e4 100644 --- a/src/quick/items/qquickitem.cpp +++ b/src/quick/items/qquickitem.cpp @@ -7865,6 +7865,7 @@ QQuickItemLayer::QQuickItemLayer(QQuickItem *item) , m_effect(0) , m_effectSource(0) , m_textureMirroring(QQuickShaderEffectSource::MirrorVertically) + , m_samples(0) { } @@ -7939,6 +7940,7 @@ void QQuickItemLayer::activate() m_effectSource->setWrapMode(m_wrapMode); m_effectSource->setFormat(m_format); m_effectSource->setTextureMirroring(m_textureMirroring); + m_effectSource->setSamples(m_samples); if (m_effectComponent) activateEffect(); @@ -8232,6 +8234,44 @@ void QQuickItemLayer::setTextureMirroring(QQuickShaderEffectSource::TextureMirro } /*! + \qmlproperty enumeration QtQuick::Item::layer.samples + \since 5.10 + + This property allows requesting multisampled rendering in the layer. + + By default multisampling is enabled whenever multisampling is + enabled for the entire window, assuming the scenegraph renderer in + use and the underlying graphics API supports this. + + By setting the value to 2, 4, etc. multisampled rendering can be requested + for a part of the scene without enabling multisampling for the entire + scene. This way multisampling is applied only to a given subtree, which can + lead to significant performance gains since multisampling is not applied to + other parts of the scene. + + \note Enabling multisampling can be potentially expensive regardless of the + layer's size, as it incurs a hardware and driver dependent performance and + memory cost. + + \note This property is only functional when support for multisample + renderbuffers and framebuffer blits is available. Otherwise the value is + silently ignored. + */ + +void QQuickItemLayer::setSamples(int count) +{ + if (m_samples == count) + return; + + m_samples = count; + + if (m_effectSource) + m_effectSource->setSamples(m_samples); + + emit samplesChanged(count); +} + +/*! \qmlproperty string QtQuick::Item::layer.samplerName Holds the name of the effect's source texture property. |