Qt3DRender.QMultiSampleAntiAliasing ¶

详细描述 ¶

A QMultiSampleAntiAliasing class enables multisample antialiasing.

It can be added to a QRenderPass 通过调用 addRenderState() :

QRenderPass *renderPass = new QRenderPass();
QMultiSampleAntiAliasing *msaa = new QMultiSampleAntiAliasing();
renderPass->addRenderState(msaa);
											

Or a QRenderStateSet 通过调用 addRenderState() :

QRenderStateSet *renderStateSet = new QRenderStateSet();
QMultiSampleAntiAliasing *msaa = new QMultiSampleAntiAliasing();
renderStateSet->addRenderState(msaa);
											

For multisampling to take effect, the render target must have been allocated with multisampling enabled:

QTexture2DMultisample *colorTex = new QTexture2DMultisample;
colorTex->setFormat(QAbstractTexture::RGBA8_UNorm);
colorTex->setWidth(1024);
colorTex->setHeight(1024);
QRenderTargetOutput *color = new QRenderTargetOutput;
color->setAttachmentPoint(QRenderTargetOutput::Color0);
color->setTexture(colorTex);
QTexture2DMultisample *depthStencilTex = new QTexture2DMultisample;
depthStencilTex->setFormat(QAbstractTexture::RGBA8_UNorm);
depthStencilTex->setWidth(1024);
depthStencilTex->setHeight(1024);
QRenderTargetOutput *depthStencil = new QRenderTargetOutput;
depthStencil->setAttachmentPoint(QRenderTargetOutput::DepthStencil);
depthStencil->setTexture(depthStencilTex);
Qt3DRender::QRenderTarget *renderTarget = new Qt3DRender::QRenderTarget;
renderTarget->addOutput(color);
renderTarget->addOutput(depthStencil);
											

Further, the shader code must use multisampling sampler types and texelFetch() instead of texture().

For example, if you have code like

you can rewrite it as

注意

When using OpenGL as the graphics API, glEnable(GL_MULTISAMPLE) will be called if QMultiSampleAntiAliasing has been added to the render states.

class PySide2.Qt3DRender.Qt3DRender. QMultiSampleAntiAliasing ( [ parent=None ] ) ¶

param parent

QNode

The constructor creates a new QMultiSampleAntiAliasing instance with the specified parent .