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QGLShaderProgram Class Reference

[ QtOpenGL module]

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

继承 QObject .

方法

Static Methods

详细描述

The QGLShaderProgram 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).

QGLShader and QGLShaderProgram 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 QGLContext 通过调用 QGLShaderProgram.bind (): 

 QGLShader shader(QGLShader.Vertex);
 shader.compileSourceCode(code);
 QGLShaderProgram program(context);
 program.addShader(shader);
 program.link();
 program.bind();

Writing portable shaders

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 QGLShaderProgram 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.

Simple shader example 

 program.addShaderFromSourceCode(QGLShader.Vertex,
     "attribute highp vec4 vertex;\n"
     "uniform highp mat4 matrix;\n"
     "void main(void)\n"
     "{\n"
     "   gl_Position = matrix * vertex;\n"
     "}");
 program.addShaderFromSourceCode(QGLShader.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);

Binary shaders and programs

Binary shaders may be specified using glShaderBinary() on the return value from QGLShader.shaderId ()。 QGLShader 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.

方法文档编制

QGLShaderProgram.__init__ ( self , QObject   parent  = None)

parent argument, if not None, causes self to be owned by Qt instead of PyQt.

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 QGLContext .

另请参阅 addShader ().

QGLShaderProgram.__init__ ( self , QGLContext   context , QObject   parent  = None)

parent argument, if not None, causes self to be owned by Qt instead of PyQt.

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 context .

另请参阅 addShader ().

bool QGLShaderProgram.addShader ( self , QGLShader   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 QGLShaderProgram 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 QGLShaderProgram.addShaderFromSourceCode ( self , QGLShader.ShaderType   type , QByteArray   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 QGLShader first.

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

bool QGLShaderProgram.addShaderFromSourceCode ( self , QGLShader.ShaderType   type , 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 QGLShader first.

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

bool QGLShaderProgram.addShaderFromSourceFile ( self , QGLShader.ShaderType   type , 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 QGLShader first.

另请参阅 addShader () 和 addShaderFromSourceCode ().

int QGLShaderProgram.attributeLocation ( self , QByteArray   name )

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 QGLShaderProgram.attributeLocation ( self , QString  name )

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 QGLShaderProgram.bind ( self )

Binds this shader program to the active QGLContext and makes it the current shader program. Any previously bound shader program is released. This is equivalent to calling glUseProgram() on programId (). Returns 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 () and release ().

QGLShaderProgram.bindAttributeLocation ( self , QByteArray   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 效果。

另请参阅 attributeLocation ().

QGLShaderProgram.bindAttributeLocation ( self , 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 效果。

另请参阅 attributeLocation ().

QGLShaderProgram.disableAttributeArray ( self , 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 (), and setUniformValue ().

QGLShaderProgram.disableAttributeArray ( self , str  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 (), and setUniformValue ().

QGLShaderProgram.enableAttributeArray ( self , int  location )

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

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

QGLShaderProgram.enableAttributeArray ( self , str  name )

这是重载函数。

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

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

int QGLShaderProgram.geometryInputType ( self )

Returns the geometry shader input type, if active.

This parameter takes effect the next time the program is linked.

该函数在 Qt 4.7 引入。

另请参阅 setGeometryInputType ().

int QGLShaderProgram.geometryOutputType ( self )

Returns the geometry shader output type, if active.

This parameter takes effect the next time the program is linked.

该函数在 Qt 4.7 引入。

另请参阅 setGeometryOutputType ().

int QGLShaderProgram.geometryOutputVertexCount ( self )

Returns the maximum number of vertices the current geometry shader program will produce, if active.

This parameter takes effect the ntext time the program is linked.

该函数在 Qt 4.7 引入。

另请参阅 setGeometryOutputVertexCount ().

bool QGLShaderProgram.hasOpenGLShaderPrograms ( QGLContext   context  = None)

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

context is used to resolve the GLSL extensions. If context is null, then QGLContext.currentContext () 被使用。

bool QGLShaderProgram.isLinked ( self )

Returns true if this shader program has been linked; false 否则。

另请参阅 link ().

bool QGLShaderProgram.link ( self )

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.

另请参阅 addShader () 和 log ().

QString QGLShaderProgram.log ( self )

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

另请参阅 link ().

int QGLShaderProgram.programId ( self )

Returns the OpenGL identifier associated with this shader program.

另请参阅 QGLShader.shaderId ().

QGLShaderProgram.release ( self )

Releases the active shader program from the current QGLContext . This is equivalent to calling glUseProgram(0) .

另请参阅 bind ().

QGLShaderProgram.removeAllShaders ( self )

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

另请参阅 addShader () 和 removeShader ().

QGLShaderProgram.removeShader ( self , QGLShader   shader )

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

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

QGLShaderProgram.setAttributeArray ( self , int  location , sequence  values )

Sets an array of vertex values 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 values .

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

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

QGLShaderProgram.setAttributeArray ( self , str  name , sequence  values )

Sets an array of 2D vertex values 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 values .

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

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

QGLShaderProgram.setAttributeBuffer ( self , int  location , int  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.

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 () for location 会被使用。

该函数在 Qt 4.7 引入。

另请参阅 setAttributeArray ().

QGLShaderProgram.setAttributeBuffer ( self , str  name , int  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.

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 () for name 会被使用。

该函数在 Qt 4.7 引入。

另请参阅 setAttributeArray ().

QGLShaderProgram.setAttributeValue ( self , int  location , float  value )

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

另请参阅 setUniformValue ().

QGLShaderProgram.setAttributeValue ( self , int  location , float  x , float  y )

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

另请参阅 setUniformValue ().

QGLShaderProgram.setAttributeValue ( self , int  location , float  x , float  y , float  z )

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

另请参阅 setUniformValue ().

QGLShaderProgram.setAttributeValue ( self , int  location , float  x , float  y , float  z , float  w )

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

另请参阅 setUniformValue ().

QGLShaderProgram.setAttributeValue ( self , int  location , QVector2D   value )

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

另请参阅 setUniformValue ().

QGLShaderProgram.setAttributeValue ( self , int  location , QVector3D   value )

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

另请参阅 setUniformValue ().

QGLShaderProgram.setAttributeValue ( self , int  location , QVector4D   value )

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

另请参阅 setUniformValue ().

QGLShaderProgram.setAttributeValue ( self , int  location , QColor   value )

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

另请参阅 setUniformValue ().

QGLShaderProgram.setAttributeValue ( self , str  name , float  value )

Sets the attribute at location in the current context to the contents of values , 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 ().

QGLShaderProgram.setAttributeValue ( self , str  name , float  x , float  y )

这是重载函数。

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

另请参阅 setUniformValue ().

QGLShaderProgram.setAttributeValue ( self , str  name , float  x , float  y , float  z )

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 ().

QGLShaderProgram.setAttributeValue ( self , str  name , float  x , float  y , float  z , float  w )

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 ().

QGLShaderProgram.setAttributeValue ( self , str  name , QVector2D   value )

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 ().

QGLShaderProgram.setAttributeValue ( self , str  name , QVector3D   value )

这是重载函数。

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

另请参阅 setUniformValue ().

QGLShaderProgram.setAttributeValue ( self , str  name , QVector4D   value )

这是重载函数。

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

另请参阅 setUniformValue ().

QGLShaderProgram.setAttributeValue ( self , str  name , QColor   value )

这是重载函数。

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

另请参阅 setUniformValue ().

QGLShaderProgram.setGeometryInputType ( self , int  inputType )

Sets the input type from inputType .

This parameter takes effect the next time the program is linked.

另请参阅 geometryInputType ().

QGLShaderProgram.setGeometryOutputType ( self , int  outputType )

Sets the output type from the geometry shader, if active, to outputType .

This parameter takes effect the next time the program is linked.

该函数在 Qt 4.7 引入。

另请参阅 geometryOutputType ().

QGLShaderProgram.setGeometryOutputVertexCount ( self , int  count )

Sets the maximum number of vertices the current geometry shader program will produce, if active, to count .

This parameter takes effect the next time the program is linked.

该函数在 Qt 4.7 引入。

另请参阅 geometryOutputVertexCount ().

QGLShaderProgram.setUniformValue ( self , int  location , int  value )

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , int  location , float  value )

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , int  location , float  x , float  y )

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , int  location , float  x , float  y , float  z )

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , int  location , float  x , float  y , float  z , float  w )

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , int  location , QVector2D   value )

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , int  location , QVector3D   value )

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , int  location , QVector4D   value )

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , int  location , QColor   color )

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , int  location , QPoint   point )

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 ().

QGLShaderProgram.setUniformValue ( self , int  location , 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 ().

QGLShaderProgram.setUniformValue ( self , int  location , QSize   size )

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , int  location , 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 ().

QGLShaderProgram.setUniformValue ( self , int  location , QMatrix2x2   value )

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , int  location , QMatrix2x3   value )

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , int  location , QMatrix2x4   value )

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , int  location , QMatrix3x2   value )

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , int  location , QMatrix3x3   value )

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , int  location , QMatrix3x4   value )

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , int  location , QMatrix4x2   value )

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , int  location , QMatrix4x3   value )

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , int  location , QMatrix4x4   value )

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , int  location , QTransform   value )

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , str  name , int  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)) .

QGLShaderProgram.setUniformValue ( self , str  name , float  value )

这是重载函数。

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , str  name , float  x , float  y )

这是重载函数。

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , str  name , float  x , float  y , float  z )

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.

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , str  name , float  x , float  y , float  z , float  w )

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 ().

QGLShaderProgram.setUniformValue ( self , str  name , QVector2D   value )

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 ().

QGLShaderProgram.setUniformValue ( self , str  name , QVector3D   value )

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 ().

QGLShaderProgram.setUniformValue ( self , str  name , 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 ().

QGLShaderProgram.setUniformValue ( self , str  name , QColor   color )

这是重载函数。

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , str  name , QPoint   point )

这是重载函数。

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , str  name , QPointF   point )

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 ().

QGLShaderProgram.setUniformValue ( self , str  name , QSize   size )

这是重载函数。

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , str  name , QSizeF   size )

这是重载函数。

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , str  name , QMatrix2x2   value )

这是重载函数。

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , str  name , QMatrix2x3   value )

这是重载函数。

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , str  name , QMatrix2x4   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 ().

QGLShaderProgram.setUniformValue ( self , str  name , QMatrix3x2   value )

这是重载函数。

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , str  name , QMatrix3x3   value )

这是重载函数。

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , str  name , QMatrix3x4   value )

这是重载函数。

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , str  name , QMatrix4x2   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 ().

QGLShaderProgram.setUniformValue ( self , str  name , QMatrix4x3   value )

这是重载函数。

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , str  name , QMatrix4x4   value )

这是重载函数。

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValue ( self , str  name , QTransform   value )

这是重载函数。

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValueArray ( self , int  location , sequence  values )

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

另请参阅 setAttributeValue ().

QGLShaderProgram.setUniformValueArray ( self , str  name , sequence  values )

Sets the uniform variable array at location 在 current context to the count elements of values .

另请参阅 setAttributeValue ().

list-of-QGLShader QGLShaderProgram.shaders ( self )

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

另请参阅 addShader () 和 removeShader ().

int QGLShaderProgram.uniformLocation ( self , QByteArray   name )

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 QGLShaderProgram.uniformLocation ( self , QString  name )

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 ().

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