内容

• 公共函数
• 静态公共成员
• 详细描述
• 介绍
• 编写便携式着色器
• 简单着色器范例
• 二进制着色器和程序

QOpenGLShaderProgram 类

The QOpenGLShaderProgram class allows OpenGL shader programs to be linked and used. 更多...

头：	#include <QOpenGLShaderProgram>
qmake:	QT += gui
Since:	Qt 5.0
继承：	QObject

• 所有成员列表，包括继承成员
• 过时成员

公共函数

	QOpenGLShaderProgram (QObject * parent = nullptr)
virtual	~QOpenGLShaderProgram ()
bool	addCacheableShaderFromSourceCode (QOpenGLShader::ShaderType type , const char * source )
bool	addCacheableShaderFromSourceCode (QOpenGLShader::ShaderType type , const QByteArray & source )
bool	addCacheableShaderFromSourceCode (QOpenGLShader::ShaderType type , const QString & source )
bool	addCacheableShaderFromSourceFile (QOpenGLShader::ShaderType type , const QString & fileName )
bool	addShader (QOpenGLShader * shader )
bool	addShaderFromSourceCode (QOpenGLShader::ShaderType type , const char * source )
bool	addShaderFromSourceCode (QOpenGLShader::ShaderType type , const QByteArray & source )
bool	addShaderFromSourceCode (QOpenGLShader::ShaderType type , const QString & source )
bool	addShaderFromSourceFile (QOpenGLShader::ShaderType type , const QString & fileName )
int	attributeLocation (const char * name ) const
int	attributeLocation (const QByteArray & name ) const
int	attributeLocation (const QString & name ) const
bool	bind ()
void	bindAttributeLocation (const char * name , int location )
void	bindAttributeLocation (const QByteArray & name , int location )
void	bindAttributeLocation (const QString & name , int location )
bool	create ()
QVector<float>	defaultInnerTessellationLevels () const
QVector<float>	defaultOuterTessellationLevels () const
void	disableAttributeArray (int location )
void	disableAttributeArray (const char * name )
void	enableAttributeArray (int location )
void	enableAttributeArray (const char * name )
bool	isLinked () const
virtual bool	link ()
QString	log () const
int	maxGeometryOutputVertices () const
int	patchVertexCount () const
GLuint	programId () const
void	release ()
void	removeAllShaders ()
void	removeShader (QOpenGLShader * shader )
void	setAttributeArray (int location , const GLfloat * 值 , int tupleSize , int stride = 0)
void	setAttributeArray (int location , const QVector2D * 值 , int stride = 0)
void	setAttributeArray (int location , const QVector3D * 值 , int stride = 0)
void	setAttributeArray (int location , const QVector4D * 值 , int stride = 0)
void	setAttributeArray (int location , GLenum type , const void * 值 , int tupleSize , int stride = 0)
void	setAttributeArray (const char * name , const GLfloat * 值 , int tupleSize , int stride = 0)
void	setAttributeArray (const char * name , const QVector2D * 值 , int stride = 0)
void	setAttributeArray (const char * name , const QVector3D * 值 , int stride = 0)
void	setAttributeArray (const char * name , const QVector4D * 值 , int stride = 0)
void	setAttributeArray (const char * name , GLenum type , const void * 值 , int tupleSize , int stride = 0)
void	setAttributeBuffer (int location , GLenum type , int offset , int tupleSize , int stride = 0)
void	setAttributeBuffer (const char * name , GLenum type , int offset , int tupleSize , int stride = 0)
void	setAttributeValue (int location , GLfloat value )
void	setAttributeValue (int location , GLfloat x , GLfloat y )
void	setAttributeValue (int location , GLfloat x , GLfloat y , GLfloat z )
void	setAttributeValue (int location , GLfloat x , GLfloat y , GLfloat z , GLfloat w )
void	setAttributeValue (int location , const QVector2D & value )
void	setAttributeValue (int location , const QVector3D & value )
void	setAttributeValue (int location , const QVector4D & value )
void	setAttributeValue (int location , const QColor & value )
void	setAttributeValue (int location , const GLfloat * 值 , int columns , int rows )
void	setAttributeValue (const char * name , GLfloat value )
void	setAttributeValue (const char * name , GLfloat x , GLfloat y )
void	setAttributeValue (const char * name , GLfloat x , GLfloat y , GLfloat z )
void	setAttributeValue (const char * name , GLfloat x , GLfloat y , GLfloat z , GLfloat w )
void	setAttributeValue (const char * name , const QVector2D & value )
void	setAttributeValue (const char * name , const QVector3D & value )
void	setAttributeValue (const char * name , const QVector4D & value )
void	setAttributeValue (const char * name , const QColor & value )
void	setAttributeValue (const char * name , const GLfloat * 值 , int columns , int rows )
void	setDefaultInnerTessellationLevels (const QVector<float> & levels )
void	setDefaultOuterTessellationLevels (const QVector<float> & levels )
void	setPatchVertexCount (int count )
void	setUniformValue (int location , GLfloat value )
void	setUniformValue (int location , GLint value )
void	setUniformValue (const char * name , const QColor & color )
void	setUniformValue (const char * name , const QPoint & point )
void	setUniformValue (const char * name , const QPointF & point )
void	setUniformValue (const char * name , const QSize & size )
void	setUniformValue (const char * name , const QSizeF & size )
void	setUniformValue (const char * name , const QMatrix2x2 & value )
void	setUniformValue (const char * name , const QMatrix2x3 & value )
void	setUniformValue (const char * name , const QMatrix2x4 & value )
void	setUniformValue (const char * name , const QMatrix3x2 & value )
void	setUniformValue (const char * name , const QMatrix3x3 & value )
void	setUniformValue (const char * name , const QMatrix3x4 & value )
void	setUniformValue (const char * name , const QMatrix4x2 & value )
void	setUniformValue (const char * name , const QMatrix4x3 & value )
void	setUniformValue (const char * name , const QMatrix4x4 & value )
void	setUniformValue (const char * name , const GLfloat [2][2] value = 2)
void	setUniformValue (const char * name , const GLfloat [3][3] value = 3)
void	setUniformValue (const char * name , const GLfloat [4][4] value = 4)
void	setUniformValue (const char * name , const QTransform & value )
void	setUniformValue (int location , GLuint value )
void	setUniformValue (int location , GLfloat x , GLfloat y )
void	setUniformValue (int location , GLfloat x , GLfloat y , GLfloat z )
void	setUniformValue (int location , GLfloat x , GLfloat y , GLfloat z , GLfloat w )
void	setUniformValue (int location , const QVector2D & value )
void	setUniformValue (int location , const QVector3D & value )
void	setUniformValue (int location , const QVector4D & value )
void	setUniformValue (int location , const QColor & color )
void	setUniformValue (int location , const QPoint & point )
void	setUniformValue (int location , const QPointF & point )
void	setUniformValue (int location , const QSize & size )
void	setUniformValue (int location , const QSizeF & size )
void	setUniformValue (int location , const QMatrix2x2 & value )
void	setUniformValue (int location , const QMatrix2x3 & value )
void	setUniformValue (int location , const QMatrix2x4 & value )
void	setUniformValue (int location , const QMatrix3x2 & value )
void	setUniformValue (int location , const QMatrix3x3 & value )
void	setUniformValue (int location , const QMatrix3x4 & value )
void	setUniformValue (int location , const QMatrix4x2 & value )
void	setUniformValue (int location , const QMatrix4x3 & value )
void	setUniformValue (int location , const QMatrix4x4 & value )
void	setUniformValue (int location , const GLfloat [2][2] value = 2)
void	setUniformValue (int location , const GLfloat [3][3] value = 3)
void	setUniformValue (int location , const GLfloat [4][4] value = 4)
void	setUniformValue (int location , const QTransform & value )
void	setUniformValue (const char * name , GLfloat value )
void	setUniformValue (const char * name , GLint value )
void	setUniformValue (const char * name , GLuint value )
void	setUniformValue (const char * name , GLfloat x , GLfloat y )
void	setUniformValue (const char * name , GLfloat x , GLfloat y , GLfloat z )
void	setUniformValue (const char * name , GLfloat x , GLfloat y , GLfloat z , GLfloat w )
void	setUniformValue (const char * name , const QVector2D & value )
void	setUniformValue (const char * name , const QVector3D & value )
void	setUniformValue (const char * name , const QVector4D & value )
void	setUniformValueArray (int location , const GLfloat * 值 , int count , int tupleSize )
void	setUniformValueArray (int location , const GLint * 值 , int count )
void	setUniformValueArray (int location , const GLuint * 值 , int count )
void	setUniformValueArray (int location , const QVector2D * 值 , int count )
void	setUniformValueArray (int location , const QVector3D * 值 , int count )
void	setUniformValueArray (int location , const QVector4D * 值 , int count )
void	setUniformValueArray (int location , const QMatrix2x2 * 值 , int count )
void	setUniformValueArray (int location , const QMatrix2x3 * 值 , int count )
void	setUniformValueArray (int location , const QMatrix2x4 * 值 , int count )
void	setUniformValueArray (int location , const QMatrix3x2 * 值 , int count )
void	setUniformValueArray (int location , const QMatrix3x3 * 值 , int count )
void	setUniformValueArray (int location , const QMatrix3x4 * 值 , int count )
void	setUniformValueArray (int location , const QMatrix4x2 * 值 , int count )
void	setUniformValueArray (int location , const QMatrix4x3 * 值 , int count )
void	setUniformValueArray (int location , const QMatrix4x4 * 值 , int count )
void	setUniformValueArray (const char * name , const GLfloat * 值 , int count , int tupleSize )
void	setUniformValueArray (const char * name , const GLint * 值 , int count )
void	setUniformValueArray (const char * name , const GLuint * 值 , int count )
void	setUniformValueArray (const char * name , const QVector2D * 值 , int count )
void	setUniformValueArray (const char * name , const QVector3D * 值 , int count )
void	setUniformValueArray (const char * name , const QVector4D * 值 , int count )
void	setUniformValueArray (const char * name , const QMatrix2x2 * 值 , int count )
void	setUniformValueArray (const char * name , const QMatrix2x3 * 值 , int count )
void	setUniformValueArray (const char * name , const QMatrix2x4 * 值 , int count )
void	setUniformValueArray (const char * name , const QMatrix3x2 * 值 , int count )
void	setUniformValueArray (const char * name , const QMatrix3x3 * 值 , int count )
void	setUniformValueArray (const char * name , const QMatrix3x4 * 值 , int count )
void	setUniformValueArray (const char * name , const QMatrix4x2 * 值 , int count )
void	setUniformValueArray (const char * name , const QMatrix4x3 * 值 , int count )
void	setUniformValueArray (const char * name , const QMatrix4x4 * 值 , int count )
QList<QOpenGLShader *>	shaders () const
int	uniformLocation (const char * name ) const
int	uniformLocation (const QByteArray & name ) const
int	uniformLocation (const QString & name ) const

• 31 公共函数继承自 QObject

静态公共成员

bool	hasOpenGLShaderPrograms (QOpenGLContext * context = nullptr)
const QMetaObject	staticMetaObject

• 9 静态公共成员继承自 QObject

额外继承成员

• 1 特性继承自 QObject
• 1 公共槽继承自 QObject
• 2 信号继承自 QObject
• 9 保护函数继承自 QObject

详细描述

The QOpenGLShaderProgram class allows OpenGL shader programs to be linked and used.

介绍

This class supports shader programs written in the OpenGL Shading Language (GLSL) and in the OpenGL/ES Shading Language (GLSL/ES).

QOpenGLShader and QOpenGLShaderProgram shelter the programmer from the details of compiling and linking vertex and fragment shaders.

The following example creates a vertex shader program using the supplied source code . Once compiled and linked, the shader program is activated in the current QOpenGLContext 通过调用 QOpenGLShaderProgram::bind ():

QOpenGLShader shader(QOpenGLShader::Vertex);
shader.compileSourceCode(code);
QOpenGLShaderProgram program(context);
program.addShader(&shader);
program.link();
program.bind();
					
					

编写便携式着色器

Shader programs can be difficult to reuse across OpenGL implementations because of varying levels of support for standard vertex attributes and uniform variables. In particular, GLSL/ES lacks all of the standard variables that are present on desktop OpenGL systems: gl_Vertex , gl_Normal , gl_Color , and so on. Desktop OpenGL lacks the variable qualifiers highp , mediump ，和 lowp .

The QOpenGLShaderProgram class makes the process of writing portable shaders easier by prefixing all shader programs with the following lines on desktop OpenGL:

#define highp
#define mediump
#define lowp
					

This makes it possible to run most GLSL/ES shader programs on desktop systems. The programmer should restrict themselves to just features that are present in GLSL/ES, and avoid standard variable names that only work on the desktop.

简单着色器范例

program.addShaderFromSourceCode(QOpenGLShader::Vertex,
    "attribute highp vec4 vertex;\n"
    "uniform highp mat4 matrix;\n"
    "void main(void)\n"
    "{\n"
    "   gl_Position = matrix * vertex;\n"
    "}");
program.addShaderFromSourceCode(QOpenGLShader::Fragment,
    "uniform mediump vec4 color;\n"
    "void main(void)\n"
    "{\n"
    "   gl_FragColor = color;\n"
    "}");
program.link();
program.bind();
int vertexLocation = program.attributeLocation("vertex");
int matrixLocation = program.uniformLocation("matrix");
int colorLocation = program.uniformLocation("color");
					

With the above shader program active, we can draw a green triangle as follows:

static GLfloat const triangleVertices[] = {
    60.0f,  10.0f,  0.0f,
    110.0f, 110.0f, 0.0f,
    10.0f,  110.0f, 0.0f
};
QColor color(0, 255, 0, 255);
QMatrix4x4 pmvMatrix;
pmvMatrix.ortho(rect());
program.enableAttributeArray(vertexLocation);
program.setAttributeArray(vertexLocation, triangleVertices, 3);
program.setUniformValue(matrixLocation, pmvMatrix);
program.setUniformValue(colorLocation, color);
glDrawArrays(GL_TRIANGLES, 0, 3);
program.disableAttributeArray(vertexLocation);
					
					

二进制着色器和程序

Binary shaders may be specified using glShaderBinary() on the return value from QOpenGLShader::shaderId ()。 QOpenGLShader instance containing the binary can then be added to the shader program with addShader () and linked in the usual fashion with link ().

Binary programs may be specified using glProgramBinaryOES() on the return value from programId (). Then the application should call link (), which will notice that the program has already been specified and linked, allowing other operations to be performed on the shader program. The shader program's id can be explicitly created using the create () 函数。

Caching Program Binaries

As of Qt 5.9, support for caching program binaries on disk is built in. To enable this, switch to using addCacheableShaderFromSourceCode () 和 addCacheableShaderFromSourceFile (). With an OpenGL ES 3.x context or support for GL_ARB_get_program_binary , this will transparently cache program binaries under QStandardPaths::GenericCacheLocation or QStandardPaths::CacheLocation . When support is not available, calling the cacheable function variants is equivalent to the normal ones.

注意： Some drivers do not have any binary formats available, even though they advertise the extension or offer OpenGL ES 3.0. In this case program binary support will be disabled.

另请参阅 QOpenGLShader .

成员函数文档编制

QOpenGLShaderProgram:: QOpenGLShaderProgram ( QObject * parent = nullptr)

Constructs a new shader program and attaches it to parent . The program will be invalid until addShader () 被调用。

The shader program will be associated with the current QOpenGLContext .

另请参阅 addShader ().

[虚拟] QOpenGLShaderProgram:: ~QOpenGLShaderProgram ()

Deletes this shader program.

bool QOpenGLShaderProgram:: addCacheableShaderFromSourceCode ( QOpenGLShader::ShaderType type , const char * source )

Registers the shader of the specified type and source to this program. Unlike addShaderFromSourceCode (), this function does not perform compilation. Compilation is deferred to link (), and may not happen at all, because link () may potentially use a program binary from Qt's shader disk cache. This will typically lead to a significant increase in performance.

Returns true if the shader has been registered or, in the non-cached case, compiled successfully; false if there was an error. The compilation error messages can be retrieved via log ().

When the disk cache is disabled, via Qt::AA_DisableShaderDiskCache for example, or the OpenGL context has no support for context binaries, calling this function is equivalent to addShaderFromSourceCode ().

该函数在 Qt 5.9 引入。

另请参阅 addShaderFromSourceCode () 和 addCacheableShaderFromSourceFile ().

bool QOpenGLShaderProgram:: addCacheableShaderFromSourceCode ( QOpenGLShader::ShaderType type , const QByteArray & source )

这是重载函数。

Registers the shader of the specified type and source to this program. Unlike addShaderFromSourceCode (), this function does not perform compilation. Compilation is deferred to link (), and may not happen at all, because link () may potentially use a program binary from Qt's shader disk cache. This will typically lead to a significant increase in performance.

Returns true if the shader has been registered or, in the non-cached case, compiled successfully; false if there was an error. The compilation error messages can be retrieved via log ().

When the disk cache is disabled, via Qt::AA_DisableShaderDiskCache for example, or the OpenGL context has no support for context binaries, calling this function is equivalent to addShaderFromSourceCode ().

该函数在 Qt 5.9 引入。

另请参阅 addShaderFromSourceCode () 和 addCacheableShaderFromSourceFile ().

bool QOpenGLShaderProgram:: addCacheableShaderFromSourceCode ( QOpenGLShader::ShaderType type , const QString & source )

这是重载函数。

Registers the shader of the specified type and source to this program. Unlike addShaderFromSourceCode (), this function does not perform compilation. Compilation is deferred to link (), and may not happen at all, because link () may potentially use a program binary from Qt's shader disk cache. This will typically lead to a significant increase in performance.

When the disk cache is disabled, via Qt::AA_DisableShaderDiskCache for example, or the OpenGL context has no support for context binaries, calling this function is equivalent to addShaderFromSourceCode ().

该函数在 Qt 5.9 引入。

另请参阅 addShaderFromSourceCode () 和 addCacheableShaderFromSourceFile ().

bool QOpenGLShaderProgram:: addCacheableShaderFromSourceFile ( QOpenGLShader::ShaderType type , const QString & fileName )

Registers the shader of the specified type and fileName to this program. Unlike addShaderFromSourceFile (), this function does not perform compilation. Compilation is deferred to link (), and may not happen at all, because link () may potentially use a program binary from Qt's shader disk cache. This will typically lead to a significant increase in performance.

Returns true if the file has been read successfully, false if the file could not be opened or the normal, non-cached compilation of the shader has failed. The compilation error messages can be retrieved via log ().

When the disk cache is disabled, via Qt::AA_DisableShaderDiskCache for example, or the OpenGL context has no support for context binaries, calling this function is equivalent to addShaderFromSourceFile ().

该函数在 Qt 5.9 引入。

另请参阅 addShaderFromSourceFile () 和 addCacheableShaderFromSourceCode ().

bool QOpenGLShaderProgram:: addShader ( QOpenGLShader * shader )

Adds a compiled shader to this shader program. Returns true if the shader could be added, or false otherwise.

Ownership of the shader object remains with the caller. It will not be deleted when this QOpenGLShaderProgram instance is deleted. This allows the caller to add the same shader to multiple shader programs.

另请参阅 addShaderFromSourceCode (), addShaderFromSourceFile (), removeShader (), link ()，和 removeAllShaders ().

bool QOpenGLShaderProgram:: addShaderFromSourceCode ( QOpenGLShader::ShaderType type , const char * source )

Compiles source as a shader of the specified type and adds it to this shader program. Returns true if compilation was successful, false otherwise. The compilation errors and warnings will be made available via log ().

This function is intended to be a short-cut for quickly adding vertex and fragment shaders to a shader program without creating an instance of QOpenGLShader 首先。

另请参阅 addShader (), addShaderFromSourceFile (), removeShader (), link (), log ()，和 removeAllShaders ().

bool QOpenGLShaderProgram:: addShaderFromSourceCode ( QOpenGLShader::ShaderType type , const QByteArray & source )

这是重载函数。

Compiles source as a shader of the specified type and adds it to this shader program. Returns true if compilation was successful, false otherwise. The compilation errors and warnings will be made available via log ().

This function is intended to be a short-cut for quickly adding vertex and fragment shaders to a shader program without creating an instance of QOpenGLShader 首先。

另请参阅 addShader (), addShaderFromSourceFile (), removeShader (), link (), log ()，和 removeAllShaders ().

bool QOpenGLShaderProgram:: addShaderFromSourceCode ( QOpenGLShader::ShaderType type , const QString & source )

这是重载函数。

Compiles source as a shader of the specified type and adds it to this shader program. Returns true if compilation was successful, false otherwise. The compilation errors and warnings will be made available via log ().

This function is intended to be a short-cut for quickly adding vertex and fragment shaders to a shader program without creating an instance of QOpenGLShader 首先。

另请参阅 addShader (), addShaderFromSourceFile (), removeShader (), link (), log ()，和 removeAllShaders ().

bool QOpenGLShaderProgram:: addShaderFromSourceFile ( QOpenGLShader::ShaderType type , const QString & fileName )

Compiles the contents of fileName as a shader of the specified type and adds it to this shader program. Returns true if compilation was successful, false otherwise. The compilation errors and warnings will be made available via log ().

This function is intended to be a short-cut for quickly adding vertex and fragment shaders to a shader program without creating an instance of QOpenGLShader 首先。

另请参阅 addShader () 和 addShaderFromSourceCode ().

int QOpenGLShaderProgram:: attributeLocation (const char * name ) const

Returns the location of the attribute name within this shader program's parameter list. Returns -1 if name is not a valid attribute for this shader program.

另请参阅 uniformLocation () 和 bindAttributeLocation ().

int QOpenGLShaderProgram:: attributeLocation (const QByteArray & name ) const

这是重载函数。

Returns the location of the attribute name within this shader program's parameter list. Returns -1 if name is not a valid attribute for this shader program.

另请参阅 uniformLocation () 和 bindAttributeLocation ().

int QOpenGLShaderProgram:: attributeLocation (const QString & name ) const

这是重载函数。

Returns the location of the attribute name within this shader program's parameter list. Returns -1 if name is not a valid attribute for this shader program.

另请参阅 uniformLocation () 和 bindAttributeLocation ().

bool QOpenGLShaderProgram:: bind ()

Binds this shader program to the active QOpenGLContext and makes it the current shader program. Any previously bound shader program is released. This is equivalent to calling glUseProgram() on programId ()。返回 true if the program was successfully bound; false otherwise. If the shader program has not yet been linked, or it needs to be re-linked, this function will call link ().

另请参阅 link () 和 release ().

void QOpenGLShaderProgram:: bindAttributeLocation (const char * name , int location )

Binds the attribute name 到指定 location . This function can be called before or after the program has been linked. Any attributes that have not been explicitly bound when the program is linked will be assigned locations automatically.

When this function is called after the program has been linked, the program will need to be relinked for the change to take effect.

另请参阅 attributeLocation ().

void QOpenGLShaderProgram:: bindAttributeLocation (const QByteArray & name , int location )

这是重载函数。

Binds the attribute name 到指定 location . This function can be called before or after the program has been linked. Any attributes that have not been explicitly bound when the program is linked will be assigned locations automatically.

When this function is called after the program has been linked, the program will need to be relinked for the change to take effect.

另请参阅 attributeLocation ().

void QOpenGLShaderProgram:: bindAttributeLocation (const QString & name , int location )

这是重载函数。

Binds the attribute name 到指定 location . This function can be called before or after the program has been linked. Any attributes that have not been explicitly bound when the program is linked will be assigned locations automatically.

When this function is called after the program has been linked, the program will need to be relinked for the change to take effect.

另请参阅 attributeLocation ().

bool QOpenGLShaderProgram:: create ()

Requests the shader program's id to be created immediately. Returns true if successful; false 否则。

This function is primarily useful when combining QOpenGLShaderProgram with other OpenGL functions that operate directly on the shader program id, like GL_OES_get_program_binary .

When the shader program is used normally, the shader program's id will be created on demand.

该函数在 Qt 5.3 引入。

另请参阅 programId ().

QVector < float > QOpenGLShaderProgram:: defaultInnerTessellationLevels () const

Returns the default inner tessellation levels to be used by the tessellation primitive generator in the event that the tessellation control shader does not output them. For more details on OpenGL and Tessellation shaders see OpenGL Tessellation Shaders .

返回 QVector of floats describing the inner tessellation levels. The vector will always have two elements but not all of them make sense for every mode of tessellation.

注意： This returns the global OpenGL state value. It is not specific to this QOpenGLShaderProgram 实例。

注意： This function is only supported with OpenGL >= 4.0 and will not return valid results with OpenGL ES 3.2.

另请参阅 setDefaultInnerTessellationLevels () 和 defaultOuterTessellationLevels ().

QVector < float > QOpenGLShaderProgram:: defaultOuterTessellationLevels () const

Returns the default outer tessellation levels to be used by the tessellation primitive generator in the event that the tessellation control shader does not output them. For more details on OpenGL and Tessellation shaders see OpenGL Tessellation Shaders .

返回 QVector of floats describing the outer tessellation levels. The vector will always have four elements but not all of them make sense for every mode of tessellation.

注意： This returns the global OpenGL state value. It is not specific to this QOpenGLShaderProgram 实例。

注意： This function is only supported with OpenGL >= 4.0 and will not return valid results with OpenGL ES 3.2.

另请参阅 setDefaultOuterTessellationLevels () 和 defaultInnerTessellationLevels ().

void QOpenGLShaderProgram:: disableAttributeArray ( int location )

Disables the vertex array at location in this shader program that was enabled by a previous call to enableAttributeArray ().

另请参阅 enableAttributeArray (), setAttributeArray (), setAttributeValue ()，和 setUniformValue ().

void QOpenGLShaderProgram:: disableAttributeArray (const char * name )

这是重载函数。

Disables the vertex array called name in this shader program that was enabled by a previous call to enableAttributeArray ().

另请参阅 enableAttributeArray (), setAttributeArray (), setAttributeValue ()，和 setUniformValue ().

void QOpenGLShaderProgram:: enableAttributeArray ( int location )

Enables the vertex array at location in this shader program so that the value set by setAttributeArray () 在 location will be used by the shader program.

另请参阅 disableAttributeArray (), setAttributeArray (), setAttributeValue ()，和 setUniformValue ().

void QOpenGLShaderProgram:: enableAttributeArray (const char * name )

这是重载函数。

Enables the vertex array called name in this shader program so that the value set by setAttributeArray () 在 name will be used by the shader program.

另请参阅 disableAttributeArray (), setAttributeArray (), setAttributeValue ()，和 setUniformValue ().

[static] bool QOpenGLShaderProgram:: hasOpenGLShaderPrograms ( QOpenGLContext * context = nullptr)

返回 true if shader programs written in the OpenGL Shading Language (GLSL) are supported on this system; false otherwise.

The context is used to resolve the GLSL extensions. If context is null, then QOpenGLContext::currentContext () is used.

bool QOpenGLShaderProgram:: isLinked () const

返回 true if this shader program has been linked; false otherwise.

另请参阅 link ().

[虚拟] bool QOpenGLShaderProgram:: link ()

Links together the shaders that were added to this program with addShader ()。返回 true if the link was successful or false otherwise. If the link failed, the error messages can be retrieved with log ().

Subclasses can override this function to initialize attributes and uniform variables for use in specific shader programs.

If the shader program was already linked, calling this function again will force it to be re-linked.

When shaders were added to this program via addCacheableShaderFromSourceCode () 或 addCacheableShaderFromSourceFile (), program binaries are supported, and a cached binary is available on disk, actual compilation and linking are skipped. Instead, link() will initialize the program with the binary blob via glProgramBinary(). If there is no cached version of the program or it was generated with a different driver version, the shaders will be compiled from source and the program will get linked normally. This allows seamless upgrading of the graphics drivers, without having to worry about potentially incompatible binary formats.

另请参阅 addShader () 和 log ().

QString QOpenGLShaderProgram:: log () const

Returns the errors and warnings that occurred during the last link () 或 addShader () with explicitly specified source code.

另请参阅 link ().

int QOpenGLShaderProgram:: maxGeometryOutputVertices () const

Returns the hardware limit for how many vertices a geometry shader can output.

int QOpenGLShaderProgram:: patchVertexCount () const

Returns the number of vertices per-patch to be used when rendering.

注意： This returns the global OpenGL state value. It is not specific to this QOpenGLShaderProgram 实例。

另请参阅 setPatchVertexCount ().

GLuint QOpenGLShaderProgram:: programId () const

Returns the OpenGL identifier associated with this shader program.

另请参阅 QOpenGLShader::shaderId ().

void QOpenGLShaderProgram:: release ()

Releases the active shader program from the current QOpenGLContext 。这相当于调用 glUseProgram(0) .

另请参阅 bind ().

void QOpenGLShaderProgram:: removeAllShaders ()

Removes all of the shaders that were added to this program previously. The QOpenGLShader objects for the shaders will not be deleted if they were constructed externally. QOpenGLShader objects that are constructed internally by QOpenGLShaderProgram will be deleted.

另请参阅 addShader () 和 removeShader ().

void QOpenGLShaderProgram:: removeShader ( QOpenGLShader * shader )

移除 shader from this shader program. The object is not deleted.

The shader program must be valid in the current QOpenGLContext .

另请参阅 addShader (), link ()，和 removeAllShaders ().

void QOpenGLShaderProgram:: setAttributeArray ( int location , const GLfloat * 值 , int tupleSize , int stride = 0)

Sets an array of vertex 值 on the attribute at location in this shader program. The tupleSize indicates the number of components per vertex (1, 2, 3, or 4), and the stride indicates the number of bytes between vertices. A default stride value of zero indicates that the vertices are densely packed in 值 .

The array will become active when enableAttributeArray () is called on the location . Otherwise the value specified with setAttributeValue () 对于 location 会被使用。

另请参阅 setAttributeValue (), setUniformValue (), enableAttributeArray ()，和 disableAttributeArray ().

void QOpenGLShaderProgram:: setAttributeArray ( int location , const QVector2D * 值 , int stride = 0)

Sets an array of 2D vertex 值 on the attribute at location in this shader program. The stride indicates the number of bytes between vertices. A default stride value of zero indicates that the vertices are densely packed in 值 .

The array will become active when enableAttributeArray () is called on the location . Otherwise the value specified with setAttributeValue () 对于 location 会被使用。

另请参阅 setAttributeValue (), setUniformValue (), enableAttributeArray ()，和 disableAttributeArray ().

void QOpenGLShaderProgram:: setAttributeArray ( int location , const QVector3D * 值 , int stride = 0)

Sets an array of 3D vertex 值 on the attribute at location in this shader program. The stride indicates the number of bytes between vertices. A default stride value of zero indicates that the vertices are densely packed in 值 .

The array will become active when enableAttributeArray () is called on the location . Otherwise the value specified with setAttributeValue () 对于 location 会被使用。

另请参阅 setAttributeValue (), setUniformValue (), enableAttributeArray ()，和 disableAttributeArray ().

void QOpenGLShaderProgram:: setAttributeArray ( int location , const QVector4D * 值 , int stride = 0)

Sets an array of 4D vertex 值 on the attribute at location in this shader program. The stride indicates the number of bytes between vertices. A default stride value of zero indicates that the vertices are densely packed in 值 .

The array will become active when enableAttributeArray () is called on the location . Otherwise the value specified with setAttributeValue () 对于 location 会被使用。

另请参阅 setAttributeValue (), setUniformValue (), enableAttributeArray ()，和 disableAttributeArray ().

void QOpenGLShaderProgram:: setAttributeArray ( int location , GLenum type , const void * 值 , int tupleSize , int stride = 0)

Sets an array of vertex 值 on the attribute at location in this shader program. The stride indicates the number of bytes between vertices. A default stride value of zero indicates that the vertices are densely packed in 值 .

The type indicates the type of elements in the 值 array, usually GL_FLOAT , GL_UNSIGNED_BYTE , etc. The tupleSize indicates the number of components per vertex: 1, 2, 3, or 4.

The array will become active when enableAttributeArray () is called on the location . Otherwise the value specified with setAttributeValue () 对于 location 会被使用。

The setAttributeBuffer () function can be used to set the attribute array to an offset within a vertex buffer.

注意： Normalization will be enabled. If this is not desired, call glVertexAttribPointer directly through QOpenGLFunctions .

另请参阅 setAttributeValue (), setUniformValue (), enableAttributeArray (), disableAttributeArray ()，和 setAttributeBuffer ().

void QOpenGLShaderProgram:: setAttributeArray (const char * name , const GLfloat * 值 , int tupleSize , int stride = 0)

这是重载函数。

Sets an array of vertex 值 on the attribute called name in this shader program. The tupleSize indicates the number of components per vertex (1, 2, 3, or 4), and the stride indicates the number of bytes between vertices. A default stride value of zero indicates that the vertices are densely packed in 值 .

The array will become active when enableAttributeArray () is called on name . Otherwise the value specified with setAttributeValue () 对于 name 会被使用。

另请参阅 setAttributeValue (), setUniformValue (), enableAttributeArray ()，和 disableAttributeArray ().

void QOpenGLShaderProgram:: setAttributeArray (const char * name , const QVector2D * 值 , int stride = 0)

这是重载函数。

Sets an array of 2D vertex 值 on the attribute called name in this shader program. The stride indicates the number of bytes between vertices. A default stride value of zero indicates that the vertices are densely packed in 值 .

The array will become active when enableAttributeArray () is called on name . Otherwise the value specified with setAttributeValue () 对于 name 会被使用。

另请参阅 setAttributeValue (), setUniformValue (), enableAttributeArray ()，和 disableAttributeArray ().

void QOpenGLShaderProgram:: setAttributeArray (const char * name , const QVector3D * 值 , int stride = 0)

这是重载函数。

Sets an array of 3D vertex 值 on the attribute called name in this shader program. The stride indicates the number of bytes between vertices. A default stride value of zero indicates that the vertices are densely packed in 值 .

The array will become active when enableAttributeArray () is called on name . Otherwise the value specified with setAttributeValue () 对于 name 会被使用。

另请参阅 setAttributeValue (), setUniformValue (), enableAttributeArray ()，和 disableAttributeArray ().

void QOpenGLShaderProgram:: setAttributeArray (const char * name , const QVector4D * 值 , int stride = 0)

这是重载函数。

Sets an array of 4D vertex 值 on the attribute called name in this shader program. The stride indicates the number of bytes between vertices. A default stride value of zero indicates that the vertices are densely packed in 值 .

The array will become active when enableAttributeArray () is called on name . Otherwise the value specified with setAttributeValue () 对于 name 会被使用。

另请参阅 setAttributeValue (), setUniformValue (), enableAttributeArray ()，和 disableAttributeArray ().

void QOpenGLShaderProgram:: setAttributeArray (const char * name , GLenum type , const void * 值 , int tupleSize , int stride = 0)

这是重载函数。

Sets an array of vertex 值 on the attribute called name in this shader program. The stride indicates the number of bytes between vertices. A default stride value of zero indicates that the vertices are densely packed in 值 .

The type indicates the type of elements in the 值 array, usually GL_FLOAT , GL_UNSIGNED_BYTE , etc. The tupleSize indicates the number of components per vertex: 1, 2, 3, or 4.

The array will become active when enableAttributeArray () is called on the name . Otherwise the value specified with setAttributeValue () 对于 name 会被使用。

The setAttributeBuffer () function can be used to set the attribute array to an offset within a vertex buffer.

另请参阅 setAttributeValue (), setUniformValue (), enableAttributeArray (), disableAttributeArray ()，和 setAttributeBuffer ().

void QOpenGLShaderProgram:: setAttributeBuffer ( int location , GLenum type , int offset , int tupleSize , int stride = 0)

Sets an array of vertex values on the attribute at location in this shader program, starting at a specific offset in the currently bound vertex buffer. The stride indicates the number of bytes between vertices. A default stride value of zero indicates that the vertices are densely packed in the value array.

The type indicates the type of elements in the vertex value array, usually GL_FLOAT , GL_UNSIGNED_BYTE , etc. The tupleSize indicates the number of components per vertex: 1, 2, 3, or 4.

The array will become active when enableAttributeArray () is called on the location . Otherwise the value specified with setAttributeValue () 对于 location 会被使用。

注意： Normalization will be enabled. If this is not desired, call glVertexAttribPointer directly through QOpenGLFunctions .

另请参阅 setAttributeArray ().

void QOpenGLShaderProgram:: setAttributeBuffer (const char * name , GLenum type , int offset , int tupleSize , int stride = 0)

这是重载函数。

Sets an array of vertex values on the attribute called name in this shader program, starting at a specific offset in the currently bound vertex buffer. The stride indicates the number of bytes between vertices. A default stride value of zero indicates that the vertices are densely packed in the value array.

The type indicates the type of elements in the vertex value array, usually GL_FLOAT , GL_UNSIGNED_BYTE , etc. The tupleSize indicates the number of components per vertex: 1, 2, 3, or 4.

The array will become active when enableAttributeArray () is called on the name . Otherwise the value specified with setAttributeValue () 对于 name 会被使用。

另请参阅 setAttributeArray ().

void QOpenGLShaderProgram:: setAttributeValue ( int location , GLfloat value )

Sets the attribute at location in the current context to value .

另请参阅 setUniformValue ().

void QOpenGLShaderProgram:: setAttributeValue ( int location , GLfloat x , GLfloat y )

Sets the attribute at location in the current context to the 2D vector ( x , y ).

另请参阅 setUniformValue ().

void QOpenGLShaderProgram:: setAttributeValue ( int location , GLfloat x , GLfloat y , GLfloat z )

Sets the attribute at location in the current context to the 3D vector ( x , y , z ).

另请参阅 setUniformValue ().

void QOpenGLShaderProgram:: setAttributeValue ( int location , GLfloat x , GLfloat y , GLfloat z , GLfloat w )

Sets the attribute at location in the current context to the 4D vector ( x , y , z , w ).

另请参阅 setUniformValue ().

void QOpenGLShaderProgram:: setAttributeValue ( int location , const QVector2D & value )

Sets the attribute at location in the current context to value .

另请参阅 setUniformValue ().

void QOpenGLShaderProgram:: setAttributeValue ( int location , const QVector3D & value )

Sets the attribute at location in the current context to value .

另请参阅 setUniformValue ().

void QOpenGLShaderProgram:: setAttributeValue ( int location , const QVector4D & value )

Sets the attribute at location in the current context to value .

另请参阅 setUniformValue ().

void QOpenGLShaderProgram:: setAttributeValue ( int location , const QColor & value )

Sets the attribute at location in the current context to value .

另请参阅 setUniformValue ().

void QOpenGLShaderProgram:: setAttributeValue ( int location , const GLfloat * 值 , int columns , int rows )

Sets the attribute at location in the current context to the contents of 值 , which contains columns elements, each consisting of rows 元素。 rows value should be 1, 2, 3, or 4. This function is typically used to set matrix values and column vectors.

另请参阅 setUniformValue ().

void QOpenGLShaderProgram:: setAttributeValue (const char * name , GLfloat value )

这是重载函数。

Sets the attribute called name in the current context to value .

另请参阅 setUniformValue ().

void QOpenGLShaderProgram:: setAttributeValue (const char * name , GLfloat x , GLfloat y )

这是重载函数。

Sets the attribute called name in the current context to the 2D vector ( x , y ).

另请参阅 setUniformValue ().

void QOpenGLShaderProgram:: setAttributeValue (const char * name , GLfloat x , GLfloat y , GLfloat z )

这是重载函数。

Sets the attribute called name in the current context to the 3D vector ( x , y , z ).

另请参阅 setUniformValue ().

void QOpenGLShaderProgram:: setAttributeValue (const char * name , GLfloat x , GLfloat y , GLfloat z , GLfloat w )

这是重载函数。

Sets the attribute called name in the current context to the 4D vector ( x , y , z , w ).

另请参阅 setUniformValue ().

void QOpenGLShaderProgram:: setAttributeValue (const char * name , const QVector2D & value )

这是重载函数。

Sets the attribute called name in the current context to value .

另请参阅 setUniformValue ().

void QOpenGLShaderProgram:: setAttributeValue (const char * name , const QVector3D & value )

这是重载函数。

Sets the attribute called name in the current context to value .

另请参阅 setUniformValue ().

void QOpenGLShaderProgram:: setAttributeValue (const char * name , const QVector4D & value )

这是重载函数。

Sets the attribute called name in the current context to value .

另请参阅 setUniformValue ().

void QOpenGLShaderProgram:: setAttributeValue (const char * name , const QColor & value )

这是重载函数。

Sets the attribute called name in the current context to value .

另请参阅 setUniformValue ().

void QOpenGLShaderProgram:: setAttributeValue (const char * name , const GLfloat * 值 , int columns , int rows )

这是重载函数。

Sets the attribute called name in the current context to the contents of 值 , which contains columns elements, each consisting of rows 元素。 rows value should be 1, 2, 3, or 4. This function is typically used to set matrix values and column vectors.

另请参阅 setUniformValue ().

void QOpenGLShaderProgram:: setDefaultInnerTessellationLevels (const QVector < float > & levels )

Sets the default outer tessellation levels to be used by the tessellation primitive generator in the event that the tessellation control shader does not output them to levels . For more details on OpenGL and Tessellation shaders see OpenGL Tessellation Shaders .

The levels argument should be a QVector consisting of 2 floats. Not all of the values make sense for all tessellation modes. If you specify a vector with fewer than 2 elements, the remaining elements will be given a default value of 1.

注意： This modifies global OpenGL state and is not specific to this QOpenGLShaderProgram instance. You should call this in your render function when needed, as QOpenGLShaderProgram will not apply this for you. This is purely a convenience function.

注意： This function is only available with OpenGL >= 4.0 and is not supported with OpenGL ES 3.2.

另请参阅 defaultInnerTessellationLevels () 和 setDefaultOuterTessellationLevels ().

void QOpenGLShaderProgram:: setDefaultOuterTessellationLevels (const QVector < float > & levels )

Sets the default outer tessellation levels to be used by the tessellation primitive generator in the event that the tessellation control shader does not output them to levels . For more details on OpenGL and Tessellation shaders see OpenGL Tessellation Shaders .

The levels argument should be a QVector consisting of 4 floats. Not all of the values make sense for all tessellation modes. If you specify a vector with fewer than 4 elements, the remaining elements will be given a default value of 1.

注意： This modifies global OpenGL state and is not specific to this QOpenGLShaderProgram instance. You should call this in your render function when needed, as QOpenGLShaderProgram will not apply this for you. This is purely a convenience function.

注意： This function is only available with OpenGL >= 4.0 and is not supported with OpenGL ES 3.2.

另请参阅 defaultOuterTessellationLevels () 和 setDefaultInnerTessellationLevels ().

void QOpenGLShaderProgram:: setPatchVertexCount ( int count )

Use this function to specify to OpenGL the number of vertices in a patch to count . A patch is a custom OpenGL primitive whose interpretation is entirely defined by the tessellation shader stages. Therefore, calling this function only makes sense when using a QOpenGLShaderProgram containing tessellation stage shaders. When using OpenGL tessellation, the only primitive that can be rendered with glDraw*() functions is GL_PATCHES .

This is equivalent to calling glPatchParameteri(GL_PATCH_VERTICES, count).

注意： This modifies global OpenGL state and is not specific to this QOpenGLShaderProgram instance. You should call this in your render function when needed, as QOpenGLShaderProgram will not apply this for you. This is purely a convenience function.

另请参阅 patchVertexCount ().

void QOpenGLShaderProgram:: setUniformValue ( int location , GLfloat value )

Sets the uniform variable at location in the current context to value .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue ( int location , GLint value )

Sets the uniform variable at location in the current context to value .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue (const char * name , const QColor & color )

这是重载函数。

Sets the uniform variable called name in the current context to the red, green, blue, and alpha components of color .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue (const char * name , const QPoint & point )

这是重载函数。

Sets the uniform variable associated with name in the current context to the x and y coordinates of point .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue (const char * name , const QPointF & point )

这是重载函数。

Sets the uniform variable associated with name in the current context to the x and y coordinates of point .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue (const char * name , const QSize & size )

这是重载函数。

Sets the uniform variable associated with name in the current context to the width and height of the given size .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue (const char * name , const QSizeF & size )

这是重载函数。

Sets the uniform variable associated with name in the current context to the width and height of the given size .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue (const char * name , const QMatrix2x2 & value )

这是重载函数。

Sets the uniform variable called name in the current context to a 2x2 matrix value .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue (const char * name , const QMatrix2x3 & value )

这是重载函数。

Sets the uniform variable called name in the current context to a 2x3 matrix value .

注意： This function is not aware of non square matrix support, that is, GLSL types like mat2x3, that is present in modern OpenGL versions. Instead, it treats the uniform as an array of vec3.

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue (const char * name , const QMatrix2x4 & value )

这是重载函数。

Sets the uniform variable called name in the current context to a 2x4 matrix value .

注意： This function is not aware of non square matrix support, that is, GLSL types like mat2x4, that is present in modern OpenGL versions. Instead, it treats the uniform as an array of vec4.

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue (const char * name , const QMatrix3x2 & value )

这是重载函数。

Sets the uniform variable called name in the current context to a 3x2 matrix value .

注意： This function is not aware of non square matrix support, that is, GLSL types like mat3x2, that is present in modern OpenGL versions. Instead, it treats the uniform as an array of vec2.

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue (const char * name , const QMatrix3x3 & value )

这是重载函数。

Sets the uniform variable called name in the current context to a 3x3 matrix value .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue (const char * name , const QMatrix3x4 & value )

这是重载函数。

Sets the uniform variable called name in the current context to a 3x4 matrix value .

注意： This function is not aware of non square matrix support, that is, GLSL types like mat3x4, that is present in modern OpenGL versions. Instead, it treats the uniform as an array of vec4.

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue (const char * name , const QMatrix4x2 & value )

这是重载函数。

Sets the uniform variable called name in the current context to a 4x2 matrix value .

注意： This function is not aware of non square matrix support, that is, GLSL types like mat4x2, that is present in modern OpenGL versions. Instead, it treats the uniform as an array of vec2.

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue (const char * name , const QMatrix4x3 & value )

这是重载函数。

Sets the uniform variable called name in the current context to a 4x3 matrix value .

注意： This function is not aware of non square matrix support, that is, GLSL types like mat4x3, that is present in modern OpenGL versions. Instead, it treats the uniform as an array of vec3.

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue (const char * name , const QMatrix4x4 & value )

这是重载函数。

Sets the uniform variable called name in the current context to a 4x4 matrix value .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue (const char * name , const GLfloat [ 2 ][ 2 ] value = 2)

这是重载函数。

Sets the uniform variable called name in the current context to a 2x2 matrix value . The matrix elements must be specified in column-major order.

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue (const char * name , const GLfloat [ 3 ][ 3 ] value = 3)

这是重载函数。

Sets the uniform variable called name in the current context to a 3x3 matrix value . The matrix elements must be specified in column-major order.

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue (const char * name , const GLfloat [ 4 ][ 4 ] value = 4)

这是重载函数。

Sets the uniform variable called name in the current context to a 4x4 matrix value . The matrix elements must be specified in column-major order.

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue (const char * name , const QTransform & value )

这是重载函数。

Sets the uniform variable called name in the current context to a 3x3 transformation matrix value that is specified as a QTransform 值。

To set a QTransform value as a 4x4 matrix in a shader, use setUniformValue(name, QMatrix4x4(value)) .

void QOpenGLShaderProgram:: setUniformValue ( int location , GLuint value )

Sets the uniform variable at location in the current context to value . This function should be used when setting sampler values.

注意： This function is not aware of unsigned int support in modern OpenGL versions and therefore treats value as a GLint and calls glUniform1i.

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue ( int location , GLfloat x , GLfloat y )

Sets the uniform variable at location in the current context to the 2D vector ( x , y ).

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue ( int location , GLfloat x , GLfloat y , GLfloat z )

Sets the uniform variable at location in the current context to the 3D vector ( x , y , z ).

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue ( int location , GLfloat x , GLfloat y , GLfloat z , GLfloat w )

Sets the uniform variable at location in the current context to the 4D vector ( x , y , z , w ).

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue ( int location , const QVector2D & value )

Sets the uniform variable at location in the current context to value .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue ( int location , const QVector3D & value )

Sets the uniform variable at location in the current context to value .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue ( int location , const QVector4D & value )

Sets the uniform variable at location in the current context to value .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue ( int location , const QColor & color )

Sets the uniform variable at location in the current context to the red, green, blue, and alpha components of color .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue ( int location , const QPoint & point )

Sets the uniform variable at location in the current context to the x and y coordinates of point .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue ( int location , const QPointF & point )

Sets the uniform variable at location in the current context to the x and y coordinates of point .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue ( int location , const QSize & size )

Sets the uniform variable at location in the current context to the width and height of the given size .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue ( int location , const QSizeF & size )

Sets the uniform variable at location in the current context to the width and height of the given size .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue ( int location , const QMatrix2x2 & value )

Sets the uniform variable at location in the current context to a 2x2 matrix value .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue ( int location , const QMatrix2x3 & value )

Sets the uniform variable at location in the current context to a 2x3 matrix value .

注意： This function is not aware of non square matrix support, that is, GLSL types like mat2x3, that is present in modern OpenGL versions. Instead, it treats the uniform as an array of vec3.

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue ( int location , const QMatrix2x4 & value )

Sets the uniform variable at location in the current context to a 2x4 matrix value .

注意： This function is not aware of non square matrix support, that is, GLSL types like mat2x4, that is present in modern OpenGL versions. Instead, it treats the uniform as an array of vec4.

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue ( int location , const QMatrix3x2 & value )

Sets the uniform variable at location in the current context to a 3x2 matrix value .

注意： This function is not aware of non square matrix support, that is, GLSL types like mat3x2, that is present in modern OpenGL versions. Instead, it treats the uniform as an array of vec2.

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue ( int location , const QMatrix3x3 & value )

Sets the uniform variable at location in the current context to a 3x3 matrix value .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue ( int location , const QMatrix3x4 & value )

Sets the uniform variable at location in the current context to a 3x4 matrix value .

注意： This function is not aware of non square matrix support, that is, GLSL types like mat3x4, that is present in modern OpenGL versions. Instead, it treats the uniform as an array of vec4.

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue ( int location , const QMatrix4x2 & value )

Sets the uniform variable at location in the current context to a 4x2 matrix value .

注意： This function is not aware of non square matrix support, that is, GLSL types like mat4x2, that is present in modern OpenGL versions. Instead, it treats the uniform as an array of vec2.

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue ( int location , const QMatrix4x3 & value )

Sets the uniform variable at location in the current context to a 4x3 matrix value .

注意： This function is not aware of non square matrix support, that is, GLSL types like mat4x3, that is present in modern OpenGL versions. Instead, it treats the uniform as an array of vec3.

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue ( int location , const QMatrix4x4 & value )

Sets the uniform variable at location in the current context to a 4x4 matrix value .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue ( int location , const GLfloat [ 2 ][ 2 ] value = 2)

这是重载函数。

Sets the uniform variable at location in the current context to a 2x2 matrix value . The matrix elements must be specified in column-major order.

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue ( int location , const GLfloat [ 3 ][ 3 ] value = 3)

这是重载函数。

Sets the uniform variable at location in the current context to a 3x3 matrix value . The matrix elements must be specified in column-major order.

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue ( int location , const GLfloat [ 4 ][ 4 ] value = 4)

这是重载函数。

Sets the uniform variable at location in the current context to a 4x4 matrix value . The matrix elements must be specified in column-major order.

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue ( int location , const QTransform & value )

Sets the uniform variable at location in the current context to a 3x3 transformation matrix value that is specified as a QTransform 值。

To set a QTransform value as a 4x4 matrix in a shader, use setUniformValue(location, QMatrix4x4(value)) .

void QOpenGLShaderProgram:: setUniformValue (const char * name , GLfloat value )

这是重载函数。

Sets the uniform variable called name in the current context to value .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue (const char * name , GLint value )

这是重载函数。

Sets the uniform variable called name in the current context to value .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue (const char * name , GLuint value )

这是重载函数。

Sets the uniform variable called name in the current context to value . This function should be used when setting sampler values.

注意： This function is not aware of unsigned int support in modern OpenGL versions and therefore treats value as a GLint and calls glUniform1i.

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue (const char * name , GLfloat x , GLfloat y )

这是重载函数。

Sets the uniform variable called name in the current context to the 2D vector ( x , y ).

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue (const char * name , GLfloat x , GLfloat y , GLfloat z )

这是重载函数。

Sets the uniform variable called name in the current context to the 3D vector ( x , y , z ).

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue (const char * name , GLfloat x , GLfloat y , GLfloat z , GLfloat w )

这是重载函数。

Sets the uniform variable called name in the current context to the 4D vector ( x , y , z , w ).

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue (const char * name , const QVector2D & value )

这是重载函数。

Sets the uniform variable called name in the current context to value .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue (const char * name , const QVector3D & value )

这是重载函数。

Sets the uniform variable called name in the current context to value .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValue (const char * name , const QVector4D & value )

这是重载函数。

Sets the uniform variable called name in the current context to value .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray ( int location , const GLfloat * 值 , int count , int tupleSize )

Sets the uniform variable array at location in the current context to the count elements of 值 . Each element has tupleSize components. The tupleSize must be 1, 2, 3, or 4.

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray ( int location , const GLint * 值 , int count )

Sets the uniform variable array at location in the current context to the count elements of 值 .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray ( int location , const GLuint * 值 , int count )

Sets the uniform variable array at location in the current context to the count elements of 值 . This overload should be used when setting an array of sampler values.

注意： This function is not aware of unsigned int support in modern OpenGL versions and therefore treats 值 as a GLint and calls glUniform1iv.

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray ( int location , const QVector2D * 值 , int count )

Sets the uniform variable array at location in the current context to the count 2D vector elements of 值 .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray ( int location , const QVector3D * 值 , int count )

Sets the uniform variable array at location in the current context to the count 3D vector elements of 值 .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray ( int location , const QVector4D * 值 , int count )

Sets the uniform variable array at location in the current context to the count 4D vector elements of 值 .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray ( int location , const QMatrix2x2 * 值 , int count )

Sets the uniform variable array at location in the current context to the count 2x2 matrix elements of 值 .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray ( int location , const QMatrix2x3 * 值 , int count )

Sets the uniform variable array at location in the current context to the count 2x3 matrix elements of 值 .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray ( int location , const QMatrix2x4 * 值 , int count )

Sets the uniform variable array at location in the current context to the count 2x4 matrix elements of 值 .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray ( int location , const QMatrix3x2 * 值 , int count )

Sets the uniform variable array at location in the current context to the count 3x2 matrix elements of 值 .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray ( int location , const QMatrix3x3 * 值 , int count )

Sets the uniform variable array at location in the current context to the count 3x3 matrix elements of 值 .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray ( int location , const QMatrix3x4 * 值 , int count )

Sets the uniform variable array at location in the current context to the count 3x4 matrix elements of 值 .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray ( int location , const QMatrix4x2 * 值 , int count )

Sets the uniform variable array at location in the current context to the count 4x2 matrix elements of 值 .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray ( int location , const QMatrix4x3 * 值 , int count )

Sets the uniform variable array at location in the current context to the count 4x3 matrix elements of 值 .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray ( int location , const QMatrix4x4 * 值 , int count )

Sets the uniform variable array at location in the current context to the count 4x4 matrix elements of 值 .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray (const char * name , const GLfloat * 值 , int count , int tupleSize )

这是重载函数。

Sets the uniform variable array called name in the current context to the count elements of 值 . Each element has tupleSize components. The tupleSize must be 1, 2, 3, or 4.

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray (const char * name , const GLint * 值 , int count )

这是重载函数。

Sets the uniform variable array called name in the current context to the count elements of 值 .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray (const char * name , const GLuint * 值 , int count )

这是重载函数。

Sets the uniform variable array called name in the current context to the count elements of 值 . This overload should be used when setting an array of sampler values.

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray (const char * name , const QVector2D * 值 , int count )

这是重载函数。

Sets the uniform variable array called name in the current context to the count 2D vector elements of 值 .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray (const char * name , const QVector3D * 值 , int count )

这是重载函数。

Sets the uniform variable array called name in the current context to the count 3D vector elements of 值 .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray (const char * name , const QVector4D * 值 , int count )

这是重载函数。

Sets the uniform variable array called name in the current context to the count 4D vector elements of 值 .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray (const char * name , const QMatrix2x2 * 值 , int count )

这是重载函数。

Sets the uniform variable array called name in the current context to the count 2x2 matrix elements of 值 .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray (const char * name , const QMatrix2x3 * 值 , int count )

这是重载函数。

Sets the uniform variable array called name in the current context to the count 2x3 matrix elements of 值 .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray (const char * name , const QMatrix2x4 * 值 , int count )

这是重载函数。

Sets the uniform variable array called name in the current context to the count 2x4 matrix elements of 值 .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray (const char * name , const QMatrix3x2 * 值 , int count )

这是重载函数。

Sets the uniform variable array called name in the current context to the count 3x2 matrix elements of 值 .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray (const char * name , const QMatrix3x3 * 值 , int count )

这是重载函数。

Sets the uniform variable array called name in the current context to the count 3x3 matrix elements of 值 .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray (const char * name , const QMatrix3x4 * 值 , int count )

这是重载函数。

Sets the uniform variable array called name in the current context to the count 3x4 matrix elements of 值 .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray (const char * name , const QMatrix4x2 * 值 , int count )

这是重载函数。

Sets the uniform variable array called name in the current context to the count 4x2 matrix elements of 值 .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray (const char * name , const QMatrix4x3 * 值 , int count )

这是重载函数。

Sets the uniform variable array called name in the current context to the count 4x3 matrix elements of 值 .

另请参阅 setAttributeValue ().

void QOpenGLShaderProgram:: setUniformValueArray (const char * name , const QMatrix4x4 * 值 , int count )

这是重载函数。

Sets the uniform variable array called name in the current context to the count 4x4 matrix elements of 值 .

另请参阅 setAttributeValue ().

QList < QOpenGLShader *> QOpenGLShaderProgram:: shaders () const

Returns a list of all shaders that have been added to this shader program using addShader ().

另请参阅 addShader () 和 removeShader ().

int QOpenGLShaderProgram:: uniformLocation (const char * name ) const

Returns the location of the uniform variable name within this shader program's parameter list. Returns -1 if name is not a valid uniform variable for this shader program.

另请参阅 attributeLocation ().

int QOpenGLShaderProgram:: uniformLocation (const QByteArray & name ) const

这是重载函数。

Returns the location of the uniform variable name within this shader program's parameter list. Returns -1 if name is not a valid uniform variable for this shader program.

另请参阅 attributeLocation ().

int QOpenGLShaderProgram:: uniformLocation (const QString & name ) const

这是重载函数。

Returns the location of the uniform variable name within this shader program's parameter list. Returns -1 if name is not a valid uniform variable for this shader program.

另请参阅 attributeLocation ().