QShaderProgramBuilder Class

class Qt3DRender ::QShaderProgramBuilder

Generates a Shader Program content from loaded graphs. 更多...

头：	#include <QShaderProgramBuilder>
qmake:	QT += 3drender
Since:	Qt 5.10
实例化：	ShaderProgramBuilder
继承：	Qt3DCore::QNode

该类在 Qt 5.10 引入。

所有成员列表，包括继承成员

特性

computeShaderCode : const QByteArray
computeShaderGraph : QUrl
enabledLayers : QStringList
fragmentShaderCode : const QByteArray
fragmentShaderGraph : QUrl
geometryShaderCode : const QByteArray
geometryShaderGraph : QUrl

shaderProgram : Qt3DRender::QShaderProgram*
tessellationControlShaderCode : const QByteArray
tessellationControlShaderGraph : QUrl
tessellationEvaluationShaderCode : const QByteArray
tessellationEvaluationShaderGraph : QUrl
vertexShaderCode : const QByteArray
vertexShaderGraph : QUrl

公共函数

QByteArray	computeShaderCode () const
QUrl	computeShaderGraph () const
QStringList	enabledLayers () const
QByteArray	fragmentShaderCode () const
QUrl	fragmentShaderGraph () const
QByteArray	geometryShaderCode () const
QUrl	geometryShaderGraph () const
Qt3DRender::QShaderProgram *	shaderProgram () const
QByteArray	tessellationControlShaderCode () const
QUrl	tessellationControlShaderGraph () const
QByteArray	tessellationEvaluationShaderCode () const
QUrl	tessellationEvaluationShaderGraph () const
QByteArray	vertexShaderCode () const
QUrl	vertexShaderGraph () const

公共槽

void	setComputeShaderGraph (const QUrl & computeShaderGraph )
void	setEnabledLayers (const QStringList & layers )
void	setFragmentShaderGraph (const QUrl & fragmentShaderGraph )
void	setGeometryShaderGraph (const QUrl & geometryShaderGraph )
void	setShaderProgram (Qt3DRender::QShaderProgram * program )
void	setTessellationControlShaderGraph (const QUrl & tessellationControlShaderGraph )
void	setTessellationEvaluationShaderGraph (const QUrl & tessellationEvaluationShaderGraph )
void	setVertexShaderGraph (const QUrl & vertexShaderGraph )

信号

void	computeShaderCodeChanged (const QByteArray & computeShaderCode )
void	computeShaderGraphChanged (const QUrl & computeShaderGraph )
void	enabledLayersChanged (const QStringList & layers )
void	fragmentShaderCodeChanged (const QByteArray & fragmentShaderCode )
void	fragmentShaderGraphChanged (const QUrl & fragmentShaderGraph )
void	geometryShaderCodeChanged (const QByteArray & geometryShaderCode )
void	geometryShaderGraphChanged (const QUrl & geometryShaderGraph )
void	shaderProgramChanged (Qt3DRender::QShaderProgram * shaderProgram )
void	tessellationControlShaderCodeChanged (const QByteArray & tessellationControlShaderCode )
void	tessellationControlShaderGraphChanged (const QUrl & tessellationControlShaderGraph )
void	tessellationEvaluationShaderCodeChanged (const QByteArray & tessellationEvaluationShaderCode )
void	tessellationEvaluationShaderGraphChanged (const QUrl & tessellationEvaluationShaderGraph )
void	vertexShaderCodeChanged (const QByteArray & vertexShaderCode )
void	vertexShaderGraphChanged (const QUrl & vertexShaderGraph )

详细描述

A shader program builder consists of several different shader graphs used to generate shader code.

A cache of generated shader code is maintained. Generated shaders are by defaults saved in QStandardPaths::writableLocation ( QStandardPaths::TempLocation )). This path can be overridden by setting environment variable QT3D_WRITABLE_CACHE_PATH to a valid writable path.

The use of the cache can be disabled by setting environment variable QT3D_DISABLE_SHADER_CACHE.

In most cases, changes made to a graph are detected by Qt 3D and a new cache entry will be generated. One case were this will not happen is when code snippets included by a graphs are changed. To work around that, clearing the cache directory or setting environment variable QT3D_REBUILD_SHADER_CACHE can be used to force shader code to be generated again.

特性文档编制

computeShaderCode : const QByteArray

Holds the generate compute shader code.

该特性在 Qt 5.13 引入。

访问函数：

QByteArray

computeShaderCode () const

通知程序信号：

void	computeShaderCodeChanged (const QByteArray & computeShaderCode )

computeShaderGraph : QUrl

Holds the URL to the compute shader graph used by this shader program builder.

访问函数：

QUrl	computeShaderGraph () const
void	setComputeShaderGraph (const QUrl & computeShaderGraph )

通知程序信号：

void	computeShaderGraphChanged (const QUrl & computeShaderGraph )

enabledLayers : QStringList

Holds the list of layers this builder will activate on the shader graphs during code generation.

访问函数：

QStringList	enabledLayers () const
void	setEnabledLayers (const QStringList & layers )

通知程序信号：

void	enabledLayersChanged (const QStringList & layers )

fragmentShaderCode : const QByteArray

Holds the generate fragment shader code.

该特性在 Qt 5.13 引入。

访问函数：

QByteArray

fragmentShaderCode () const

通知程序信号：

void	fragmentShaderCodeChanged (const QByteArray & fragmentShaderCode )

fragmentShaderGraph : QUrl

Holds the URL to the fragment shader graph used by this shader program builder.

访问函数：

QUrl	fragmentShaderGraph () const
void	setFragmentShaderGraph (const QUrl & fragmentShaderGraph )

通知程序信号：

void	fragmentShaderGraphChanged (const QUrl & fragmentShaderGraph )

geometryShaderCode : const QByteArray

Holds the generate geometry shader code.

该特性在 Qt 5.13 引入。

访问函数：

QByteArray

geometryShaderCode () const

通知程序信号：

void	geometryShaderCodeChanged (const QByteArray & geometryShaderCode )

geometryShaderGraph : QUrl

Holds the URL to the geometry shader graph used by this shader program builder.

访问函数：

QUrl	geometryShaderGraph () const
void	setGeometryShaderGraph (const QUrl & geometryShaderGraph )

通知程序信号：

void	geometryShaderGraphChanged (const QUrl & geometryShaderGraph )

shaderProgram : Qt3DRender::QShaderProgram *

Holds the shader program on which this builder generates code.

访问函数：

Qt3DRender::QShaderProgram *	shaderProgram () const
void	setShaderProgram (Qt3DRender::QShaderProgram * program )

通知程序信号：

void	shaderProgramChanged (Qt3DRender::QShaderProgram * shaderProgram )

tessellationControlShaderCode : const QByteArray

Holds the generate tessellation control shader code.

该特性在 Qt 5.13 引入。

访问函数：

QByteArray

tessellationControlShaderCode () const

通知程序信号：

void	tessellationControlShaderCodeChanged (const QByteArray & tessellationControlShaderCode )

tessellationControlShaderGraph : QUrl

Holds the URL to the tesselation control shader graph used by this shader program builder.

访问函数：

QUrl	tessellationControlShaderGraph () const
void	setTessellationControlShaderGraph (const QUrl & tessellationControlShaderGraph )

通知程序信号：

void	tessellationControlShaderGraphChanged (const QUrl & tessellationControlShaderGraph )

tessellationEvaluationShaderCode : const QByteArray

Holds the generate tessellation evaluation shader code.

该特性在 Qt 5.13 引入。

访问函数：

QByteArray

tessellationEvaluationShaderCode () const

通知程序信号：

void	tessellationEvaluationShaderCodeChanged (const QByteArray & tessellationEvaluationShaderCode )

tessellationEvaluationShaderGraph : QUrl

Holds the URL to the tesselation evaluation shader graph used by this shader program builder.

访问函数：

QUrl	tessellationEvaluationShaderGraph () const
void	setTessellationEvaluationShaderGraph (const QUrl & tessellationEvaluationShaderGraph )

通知程序信号：

void	tessellationEvaluationShaderGraphChanged (const QUrl & tessellationEvaluationShaderGraph )

vertexShaderCode : const QByteArray

Holds the generate vertex shader code.

该特性在 Qt 5.13 引入。

访问函数：

QByteArray

vertexShaderCode () const

通知程序信号：

void	vertexShaderCodeChanged (const QByteArray & vertexShaderCode )

vertexShaderGraph : QUrl

Holds the URL to the vertex shader graph used by this shader program builder.

访问函数：

QUrl	vertexShaderGraph () const
void	setVertexShaderGraph (const QUrl & vertexShaderGraph )

通知程序信号：

void	vertexShaderGraphChanged (const QUrl & vertexShaderGraph )