QShaderProgram Class
(Qt3DRender::QShaderProgram)Encapsulates a Shader Program. More...
Header: | #include <QShaderProgram> |
qmake: | QT += 3drender |
Since: | Qt 5.5 |
Instantiated By: | ShaderProgram |
Inherits: | Qt3DCore::QNode |
Public Types
enum | ShaderType { Vertex, Fragment, TessellationControl, TessellationEvaluation, Geometry, Compute } |
enum | Status { NotReady, Ready, Error } |
Properties
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- 3 properties inherited from Qt3DCore::QNode
- 1 property inherited from QObject
Public Functions
QShaderProgram(Qt3DCore::QNode *parent = nullptr) | |
virtual | ~QShaderProgram() |
QByteArray | computeShaderCode() const |
QByteArray | fragmentShaderCode() const |
QByteArray | geometryShaderCode() const |
QString | log() const |
void | setShaderCode(Qt3DRender::QShaderProgram::ShaderType type, const QByteArray &shaderCode) |
QByteArray | shaderCode(Qt3DRender::QShaderProgram::ShaderType type) const |
Qt3DRender::QShaderProgram::Status | status() const |
QByteArray | tessellationControlShaderCode() const |
QByteArray | tessellationEvaluationShaderCode() const |
QByteArray | vertexShaderCode() const |
- 13 public functions inherited from Qt3DCore::QNode
- 31 public functions inherited from QObject
Public Slots
void | setComputeShaderCode(const QByteArray &computeShaderCode) |
void | setFragmentShaderCode(const QByteArray &fragmentShaderCode) |
void | setGeometryShaderCode(const QByteArray &geometryShaderCode) |
void | setTessellationControlShaderCode(const QByteArray &tessellationControlShaderCode) |
void | setTessellationEvaluationShaderCode(const QByteArray &tessellationEvaluationShaderCode) |
void | setVertexShaderCode(const QByteArray &vertexShaderCode) |
- 3 public slots inherited from Qt3DCore::QNode
- 1 public slot inherited from QObject
Signals
void | computeShaderCodeChanged(const QByteArray &computeShaderCode) |
void | fragmentShaderCodeChanged(const QByteArray &fragmentShaderCode) |
void | geometryShaderCodeChanged(const QByteArray &geometryShaderCode) |
void | logChanged(const QString &log) |
void | statusChanged(Qt3DRender::QShaderProgram::Status status) |
void | tessellationControlShaderCodeChanged(const QByteArray &tessellationControlShaderCode) |
void | tessellationEvaluationShaderCodeChanged(const QByteArray &tessellationEvaluationShaderCode) |
void | vertexShaderCodeChanged(const QByteArray &vertexShaderCode) |
- 4 signals inherited from Qt3DCore::QNode
- 2 signals inherited from QObject
Static Public Members
QByteArray | loadSource(const QUrl &sourceUrl) |
const QMetaObject | staticMetaObject |
- 9 static public members inherited from QObject
Reimplemented Protected Functions
virtual void | sceneChangeEvent(const Qt3DCore::QSceneChangePtr &change) override |
- 2 protected functions inherited from Qt3DCore::QNode
- 9 protected functions inherited from QObject
Detailed Description
Encapsulates a Shader Program.
A shader program consists of several different shaders, such as vertex and fragment shaders.
Qt3D will automatically populate a set of default uniforms if they are encountered during the shader instrospection phase.
Default Uniform | Associated Qt3D Parameter name | GLSL declaration | |||
---|---|---|---|---|---|
ModelMatrix | modelMatrix | uniform mat4 modelMatrix; | |||
ViewMatrix | viewMatrix | uniform mat4 viewMatrix; | |||
ProjectionMatrix | projectionMatrix | uniform mat4 projectionMatrix; | |||
ModelViewMatrix | modelView | uniform mat4 modelView; | |||
ViewProjectionMatrix | viewProjectionMatrix | uniform mat4 viewProjectionMatrix; | |||
ModelViewProjectionMatrix | modelViewProjection mvp | uniform mat4 modelViewProjection; uniform mat4 mvp; | |||
InverseModelMatrix | inverseModelMatrix | uniform mat4 inverseModelMatrix; | |||
InverseViewMatrix | inverseViewMatrix | uniform mat4 inverseViewMatrix; | |||
InverseProjectionMatrix | inverseProjectionMatrix | uniform mat4 inverseProjectionMatrix; | |||
InverseModelViewMatrix | inverseModelView | uniform mat4 inverseModelView; | |||
InverseViewProjectionMatrix | inverseViewProjectionMatrix | uniform mat4 inverseViewProjectionMatrix; | |||
InverseModelViewProjectionMatrix | inverseModelViewProjection | uniform mat4 inverseModelViewProjection; | |||
ModelNormalMatrix | modelNormalMatrix | uniform mat3 modelNormalMatrix; | |||
ModelViewNormalMatrix | modelViewNormal | uniform mat3 modelViewNormal; | |||
ViewportMatrix | viewportMatrix | uniform mat4 viewportMatrix; | |||
InverseViewportMatrix | inverseViewportMatrix | uniform mat4 inverseViewportMatrix; | |||
AspectRatio (surface width / surface height) | aspectRatio | uniform float aspectRatio; | |||
Exposure | exposure | uniform float exposure; | |||
Gamma | gamma | uniform float gamma; | |||
Time (in nano seconds) | time | uniform float time; | |||
EyePosition | eyePosition | uniform vec3 eyePosition; | |||
SkinningPalette | skinningPalette[0] | const int maxJoints = 100; uniform mat4 skinningPalette[maxJoints]; |
Member Type Documentation
enum QShaderProgram::ShaderType
This enum identifies the type of shader used.
Constant | Value | Description |
---|---|---|
Qt3DRender::QShaderProgram::Vertex | 0 | Vertex shader |
Qt3DRender::QShaderProgram::Fragment | 1 | Fragment shader |
Qt3DRender::QShaderProgram::TessellationControl | 2 | Tesselation control shader |
Qt3DRender::QShaderProgram::TessellationEvaluation | 3 | Tesselation evaluation shader |
Qt3DRender::QShaderProgram::Geometry | 4 | Geometry shader |
Qt3DRender::QShaderProgram::Compute | 5 | Compute shader |
enum QShaderProgram::Status
This enum identifies the status of shader used.
Constant | Value | Description |
---|---|---|
Qt3DRender::QShaderProgram::NotReady | 0 | The shader hasn't been compiled and linked yet |
Qt3DRender::QShaderProgram::Ready | 1 | The shader was successfully compiled |
Qt3DRender::QShaderProgram::Error | 2 | An error occurred while compiling the shader |
Property Documentation
computeShaderCode : QByteArray
Holds the compute shader code used by this shader program.
Access functions:
QByteArray | computeShaderCode() const |
void | setComputeShaderCode(const QByteArray &computeShaderCode) |
Notifier signal:
void | computeShaderCodeChanged(const QByteArray &computeShaderCode) |
fragmentShaderCode : QByteArray
Holds the fragment shader code used by this shader program.
Access functions:
QByteArray | fragmentShaderCode() const |
void | setFragmentShaderCode(const QByteArray &fragmentShaderCode) |
Notifier signal:
void | fragmentShaderCodeChanged(const QByteArray &fragmentShaderCode) |
geometryShaderCode : QByteArray
Holds the geometry shader code used by this shader program.
Access functions:
QByteArray | geometryShaderCode() const |
void | setGeometryShaderCode(const QByteArray &geometryShaderCode) |
Notifier signal:
void | geometryShaderCodeChanged(const QByteArray &geometryShaderCode) |
log : const QString
Holds the log of the current shader program. This is useful to diagnose a compilation failure of the shader program.
Access functions:
QString | log() const |
Notifier signal:
void | logChanged(const QString &log) |
status : const Status
Holds the status of the current shader program.
Access functions:
Qt3DRender::QShaderProgram::Status | status() const |
Notifier signal:
void | statusChanged(Qt3DRender::QShaderProgram::Status status) |
tessellationControlShaderCode : QByteArray
Holds the tesselation control shader code used by this shader program.
Access functions:
QByteArray | tessellationControlShaderCode() const |
void | setTessellationControlShaderCode(const QByteArray &tessellationControlShaderCode) |
Notifier signal:
void | tessellationControlShaderCodeChanged(const QByteArray &tessellationControlShaderCode) |
tessellationEvaluationShaderCode : QByteArray
Holds the tesselation evaluation shader code used by this shader program.
Access functions:
QByteArray | tessellationEvaluationShaderCode() const |
void | setTessellationEvaluationShaderCode(const QByteArray &tessellationEvaluationShaderCode) |
Notifier signal:
void | tessellationEvaluationShaderCodeChanged(const QByteArray &tessellationEvaluationShaderCode) |
vertexShaderCode : QByteArray
Holds the vertex shader code used by this shader program.
Access functions:
QByteArray | vertexShaderCode() const |
void | setVertexShaderCode(const QByteArray &vertexShaderCode) |
Notifier signal:
void | vertexShaderCodeChanged(const QByteArray &vertexShaderCode) |
Member Function Documentation
QShaderProgram::QShaderProgram(Qt3DCore::QNode *parent = nullptr)
Default constructs an instance of QShaderProgram.
[virtual]
QShaderProgram::~QShaderProgram()
Destroys the instance of QShaderProgram. The destructor is virtual.
[static]
QByteArray QShaderProgram::loadSource(const QUrl &sourceUrl)
Returns the shader code loaded from sourceUrl.
Note: This function can be invoked via the meta-object system and from QML. See Q_INVOKABLE.
[override virtual protected]
void QShaderProgram::sceneChangeEvent(const Qt3DCore::QSceneChangePtr &change)
Reimplemented from QNode::sceneChangeEvent().
Posts a scene change with parameter change.
void QShaderProgram::setShaderCode(Qt3DRender::QShaderProgram::ShaderType type, const QByteArray &shaderCode)
Sets the shader code for type of shader to the shaderCode.
See also shaderCode().
QByteArray QShaderProgram::shaderCode(Qt3DRender::QShaderProgram::ShaderType type) const
Returns the shader code for type.
See also setShaderCode().
Qt3DRender::QShaderProgram::Status QShaderProgram::status() const
Returns the status of the current shader program.
Note: Getter function for property status.
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