class QOpenGLShader

The QOpenGLShader class allows OpenGL shaders to be compiled. More…

Synopsis

Methods

• def __init__()

• def compileSourceCode()

• def compileSourceFile()

• def isCompiled()

• def log()

• def shaderId()

• def shaderType()

• def sourceCode()

Static functions

• def hasOpenGLShaders()

Note

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Detailed Description

This class supports shaders 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.

See also

QOpenGLShaderProgram

class ShaderTypeBit

(inherits enum.Flag) This enum specifies the type of QOpenGLShader that is being created.

Constant	Description
QOpenGLShader.Vertex	Vertex shader written in the OpenGL Shading Language (GLSL).
QOpenGLShader.Fragment	Fragment shader written in the OpenGL Shading Language (GLSL).
QOpenGLShader.Geometry	Geometry shaders written in the OpenGL Shading Language (GLSL) (requires OpenGL >= 3.2 or OpenGL ES >= 3.2).
QOpenGLShader.TessellationControl	Tessellation control shaders written in the OpenGL shading language (GLSL) (requires OpenGL >= 4.0 or OpenGL ES >= 3.2).
QOpenGLShader.TessellationEvaluation	Tessellation evaluation shaders written in the OpenGL shading language (GLSL) (requires OpenGL >= 4.0 or OpenGL ES >= 3.2).
QOpenGLShader.Compute	Compute shaders written in the OpenGL shading language (GLSL) (requires OpenGL >= 4.3 or OpenGL ES >= 3.1).

__init__(type[, parent=None])

Parameters:

• type – Combination of ShaderTypeBit

• parent – QObject

Constructs a new QOpenGLShader object of the specified type and attaches it to parent. If shader programs are not supported, hasOpenGLShaderPrograms() will return false.

This constructor is normally followed by a call to compileSourceCode() or compileSourceFile() .

The shader will be associated with the current QOpenGLContext.

See also

compileSourceCode() compileSourceFile()

compileSourceCode(source)

Parameters:

source – QByteArray

Return type:

bool

This is an overloaded function.

Sets the source code for this shader and compiles it. Returns true if the source was successfully compiled, false otherwise.

See also

compileSourceFile()

compileSourceCode(source)

Parameters:

source – str

Return type:

bool

This is an overloaded function.

Sets the source code for this shader and compiles it. Returns true if the source was successfully compiled, false otherwise.

See also

compileSourceFile()

compileSourceCode(source)

Parameters:

source – str

Return type:

bool

Sets the source code for this shader and compiles it. Returns true if the source was successfully compiled, false otherwise.

See also

compileSourceFile()

compileSourceFile(fileName)

Parameters:

fileName – str

Return type:

bool

Sets the source code for this shader to the contents of fileName and compiles it. Returns true if the file could be opened and the source compiled, false otherwise.

See also

compileSourceCode()

static hasOpenGLShaders(type[, context=None])

Parameters:

• type – Combination of ShaderTypeBit

• context – QOpenGLContext

Return type:

bool

Returns true if shader programs of type type are supported on this system; false otherwise.

The context is used to resolve the GLSL extensions. If context is None, then QOpenGLContext::currentContext() is used.

isCompiled()

Return type:

bool

Returns true if this shader has been compiled; false otherwise.

See also

compileSourceCode() compileSourceFile()

log()

Return type:

str

Returns the errors and warnings that occurred during the last compile.

See also

compileSourceCode() compileSourceFile()

shaderId()

Return type:

int

Returns the OpenGL identifier associated with this shader.

See also

programId()

shaderType()

Return type:

Combination of ShaderTypeBit

Returns the type of this shader.

sourceCode()

Return type:

QByteArray

Returns the source code for this shader.

See also

compileSourceCode()