Qt3DRender::QAlphaCoverage Class
class Qt3DRender::QAlphaCoverage启用“透明度到覆盖率”多采样模式。更多...
| 标题： | #include <qalphacoverage.h> |
| CMake： | find_package(Qt6 REQUIRED COMPONENTS 3drender) target_link_libraries(mytarget PRIVATE Qt6::3drender) |
| qmake： | QT += 3drender |
| 在 QML 中： | AlphaCoverage |
| 继承自： | Qt3DRender::QRenderState |
| 状态： | 已弃用 |
该类已弃用。我们强烈建议不要在新代码中使用它。
公共函数
| QAlphaCoverage(Qt3DCore::QNode *parent = nullptr) |
详细说明
Qt3DRender::QAlphaCoverage 类可启用“Alpha转覆盖率”多采样模式。启用后，片段Alpha值将作为采样的覆盖率，并与片段覆盖率值相结合。若多采样功能已禁用，Qt3DRender::QAlphaCoverage 将不执行任何操作。“Alpha转覆盖率”在需要顺序无关混合时最为有用，例如渲染树叶、草丛及其他茂密的植被时。
可通过调用QRenderPass::addRenderState() 将其添加到QRenderPass 中：
QRenderPass *renderPass = new QRenderPass();
// Create a alpha coverage render state
QAlphaCoverage *alphaCoverage = new QAlphaCoverage();
QMultiSampleAntiAliasing *multiSampleAntialiasing = new QMultiSampleAntiAliasing();
// Add the render states to the render pass
renderPass->addRenderState(alphaCoverage);
renderPass->addRenderState(multiSampleAntialiasing);或者通过调用QRenderStateSet::addRenderState() 将其添加到QRenderStateSet 中：
QRenderStateSet *renderStateSet = new QRenderStateSet();
// Create a alpha coverage render state
QAlphaCoverage *alphaCoverage = new QAlphaCoverage();
QMultiSampleAntiAliasing *multiSampleAntialiasing = new QMultiSampleAntiAliasing();
// Add the render states to the render state set
renderStateSet->addRenderState(alphaCoverage);
renderStateSet->addRenderState(multiSampleAntialiasing);另请参阅 Qt3DRender::QMultiSampleAntiAliasing 。
成员函数文档
[explicit] QAlphaCoverage::QAlphaCoverage(Qt3DCore::QNode *parent = nullptr)
该构造函数会使用指定的parent 创建一个新的QAlphaCoverage::QAlphaCoverage 实例。
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