QMaterial¶
Provides an abstract class that should be the base of all material component classes in a scene. More…
Inherited by: QDiffuseMapMaterial, QDiffuseSpecularMapMaterial, QDiffuseSpecularMaterial, QGoochMaterial, QMetalRoughMaterial, QMorphPhongMaterial, QNormalDiffuseMapAlphaMaterial, QNormalDiffuseMapMaterial, QNormalDiffuseSpecularMapMaterial, QPerVertexColorMaterial, QPhongAlphaMaterial, QPhongMaterial, QTextureMaterial
Synopsis¶
Functions¶
def
addParameter
(parameter)def
effect
()def
parameters
()def
removeParameter
(parameter)
Slots¶
def
setEffect
(effect)
Signals¶
def
effectChanged
(effect)
Detailed Description¶
QMaterial
provides a way to specify the rendering of anentity
. Any aspect can define its own subclass ofQMaterial
so that a Material can be used to describe a visual element; for example, the way sound should reflect off an element, the temperature of a surface, and so on.In itself, a
QMaterial
doesn’t do anything. It’s only when it references aQEffect
node that aQMaterial
becomes useful.In practice, it often happens that a single
QEffect
is being referenced by severalQMaterial
components. This allows to only create the effect, techniques, passes and shaders once while allowing to specify the material by addingQParameter
instances.A
QParameter
defined on aQMaterial
overrides parameter (of the same name) defined in aQEffect
,QTechnique
andQRenderPass
, but are overridden by parameter inQRenderPassFilter
andQTechniqueFilter
.QMaterial *material1 = new QMaterial(); QMaterial *material2 = new QMaterial(); // Create effect, technique, render pass and shader QEffect *effect = new QEffect(); QTechnique *gl3Technique = new QTechnique(); QRenderPass *gl3Pass = new QRenderPass(); QShaderProgram *glShader = new QShaderProgram(); // Set the shader on the render pass gl3Pass->setShaderProgram(glShader); // Add the pass to the technique gl3Technique->addRenderPass(gl3Pass); // Set the targeted GL version for the technique gl3Technique->graphicsApiFilter()->setApi(QGraphicsApiFilter::OpenGL); gl3Technique->graphicsApiFilter()->setMajorVersion(3); gl3Technique->graphicsApiFilter()->setMinorVersion(1); gl3Technique->graphicsApiFilter()->setProfile(QGraphicsApiFilter::CoreProfile); // Add the technique to the effect effect->addTechnique(gl3Technique); // Set the effect on the materials material1->setEffect(effect); material2->setEffect(effect); // Set different parameters on the materials const QString parameterName = QStringLiteral("color"); material1->addParameter(new QParameter(parameterName, QColor::fromRgbF(0.0f, 1.0f, 0.0f, 1.0f); material2->addParameter(new QParameter(parameterName, QColor::fromRgbF(1.0f, 1.0f, 1.0f, 1.0f);See also
QEffect
QTechnique
QParameter
- class PySide2.Qt3DRender.Qt3DRender.QMaterial([parent=None])¶
- Parameters:
parent –
PySide2.Qt3DCore.Qt3DCore.QNode
- PySide2.Qt3DRender.Qt3DRender.QMaterial.addParameter(parameter)¶
- Parameters:
parameter –
PySide2.Qt3DRender.Qt3DRender.QParameter
Add a
parameter
to the material’s parameters.
- PySide2.Qt3DRender.Qt3DRender.QMaterial.effect()¶
- Return type:
Specifies the effect to be used with the material.
- PySide2.Qt3DRender.Qt3DRender.QMaterial.effectChanged(effect)¶
- Parameters:
- PySide2.Qt3DRender.Qt3DRender.QMaterial.parameters()¶
- Return type:
Returns a vector of the material’s current parameters
- PySide2.Qt3DRender.Qt3DRender.QMaterial.removeParameter(parameter)¶
- Parameters:
parameter –
PySide2.Qt3DRender.Qt3DRender.QParameter
Remove a
parameter
from the material’s parameters.
- PySide2.Qt3DRender.Qt3DRender.QMaterial.setEffect(effect)¶
- Parameters:
Specifies the effect to be used with the material.
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