QOpenGLFunctions

The QOpenGLFunctions class provides cross-platform access to the OpenGL ES 2.0 API. More

Inheritance diagram of PySide6.QtGui.QOpenGLFunctions

Inherited by: QOpenGLExtraFunctions

New in version 5.0.

Synopsis

Functions

Detailed Description

OpenGL ES 2.0 defines a subset of the OpenGL specification that is common across many desktop and embedded OpenGL implementations. However, it can be difficult to use the functions from that subset because they need to be resolved manually on desktop systems.

QOpenGLFunctions provides a guaranteed API that is available on all OpenGL systems and takes care of function resolution on systems that need it. The recommended way to use QOpenGLFunctions is by direct inheritance:

class MyGLWindow(QWindow, QOpenGLFunctions):

    Q_OBJECT
# public
    MyGLWindow = explicit(QScreen screen = None)
protected:
    def initializeGL():
    def paintGL():
    m_context = QOpenGLContext()

def __init__(self, screen):
    QWindow.__init__(self, screen)

    setSurfaceType(OpenGLSurface)
    create()
    # Create an OpenGL context
    m_context = QOpenGLContext
    m_context.create()
    # Setup scene and render it
    initializeGL()
    paintGL()

def initializeGL(self):

    m_context.makeCurrent(self)
    initializeOpenGLFunctions()

The paintGL() function can then use any of the OpenGL ES 2.0 functions without explicit resolution, such as glActiveTexture() in the following example:

def paintGL(self):

    m_context.makeCurrent(self)
    glActiveTexture(GL_TEXTURE1)
    glBindTexture(GL_TEXTURE_2D, textureId)
    # ...
    m_context.swapBuffers(self)
    m_context.doneCurrent()

QOpenGLFunctions can also be used directly for ad-hoc invocation of OpenGL ES 2.0 functions on all platforms:

def glFuncs(QOpenGLContext.currentContext()):
glFuncs.glActiveTexture(GL_TEXTURE1)

An alternative approach is to query the context’s associated QOpenGLFunctions instance. This is somewhat faster than the previous approach due to avoiding the creation of a new instance, but the difference is fairly small since the internal data structures are shared, and function resolving happens only once for a given context, regardless of the number of QOpenGLFunctions instances initialized for it.

glFuncs = QOpenGLContext.currentContext().functions()
glFuncs.glActiveTexture(GL_TEXTURE1)

QOpenGLFunctions provides wrappers for all OpenGL ES 2.0 functions, including the common subset of OpenGL 1.x and ES 2.0. While such functions, for example glClear() or glDrawArrays() , can be called also directly, as long as the application links to the platform-specific OpenGL library, calling them via QOpenGLFunctions enables the possibility of dynamically loading the OpenGL implementation.

The hasOpenGLFeature() and openGLFeatures() functions can be used to determine if the OpenGL implementation has a major OpenGL ES 2.0 feature. For example, the following checks if non power of two textures are available:

def funcs(QOpenGLContext.currentContext()):
npot = funcs.hasOpenGLFeature(QOpenGLFunctions.NPOTTextures)
class PySide6.QtGui.QOpenGLFunctions

PySide6.QtGui.QOpenGLFunctions(context)

Parameters

contextPySide6.QtGui.QOpenGLContext

Constructs a default function resolver. The resolver cannot be used until initializeOpenGLFunctions() is called to specify the context.

Constructs a function resolver for context. If context is None, then the resolver will be created for the current QOpenGLContext .

The context or another context in the group must be current.

An object constructed in this way can only be used with context and other contexts that share with it. Use initializeOpenGLFunctions() to change the object’s context association.

PySide6.QtGui.QOpenGLFunctions.OpenGLFeature

This enum defines OpenGL and OpenGL ES features whose presence may depend on the implementation.

Constant

Description

QOpenGLFunctions.Multitexture

glActiveTexture() function is available.

QOpenGLFunctions.Shaders

Shader functions are available.

QOpenGLFunctions.Buffers

Vertex and index buffer functions are available.

QOpenGLFunctions.Framebuffers

Framebuffer object functions are available.

QOpenGLFunctions.BlendColor

glBlendColor() is available.

QOpenGLFunctions.BlendEquation

glBlendEquation() is available.

QOpenGLFunctions.BlendEquationSeparate

glBlendEquationSeparate() is available.

QOpenGLFunctions.BlendEquationAdvanced

Advanced blend equations are available.

QOpenGLFunctions.BlendFuncSeparate

glBlendFuncSeparate() is available.

QOpenGLFunctions.BlendSubtract

Blend subtract mode is available.

QOpenGLFunctions.CompressedTextures

Compressed texture functions are available.

QOpenGLFunctions.Multisample

glSampleCoverage() function is available.

QOpenGLFunctions.StencilSeparate

Separate stencil functions are available.

QOpenGLFunctions.NPOTTextures

Non power of two textures are available.

QOpenGLFunctions.NPOTTextureRepeat

Non power of two textures can use GL_REPEAT as wrap parameter.

QOpenGLFunctions.FixedFunctionPipeline

The fixed function pipeline is available.

QOpenGLFunctions.TextureRGFormats

The GL_RED and GL_RG texture formats are available.

QOpenGLFunctions.MultipleRenderTargets

Multiple color attachments to framebuffer objects are available.

PySide6.QtGui.QOpenGLFunctions.glActiveTexture(texture)
Parameters

texture – int

Convenience function that calls (texture).

For more information, see the OpenGL ES 3.X documentation for glActiveTexture() .

PySide6.QtGui.QOpenGLFunctions.glAttachShader(program, shader)
Parameters
  • program – int

  • shader – int

Convenience function that calls (program, shader).

For more information, see the OpenGL ES 3.X documentation for glAttachShader() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glBindAttribLocation(program, index, name)
Parameters
  • program – int

  • index – int

  • name – str

Convenience function that calls (program, index, name).

For more information, see the OpenGL ES 3.X documentation for glBindAttribLocation() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glBindBuffer(target, buffer)
Parameters
  • target – int

  • buffer – int

Convenience function that calls (target, buffer).

For more information, see the OpenGL ES 3.X documentation for glBindBuffer() .

PySide6.QtGui.QOpenGLFunctions.glBindFramebuffer(target, framebuffer)
Parameters
  • target – int

  • framebuffer – int

Convenience function that calls (target, framebuffer).

Note that Qt will translate a framebuffer argument of 0 to the currently bound QOpenGLContext ‘s defaultFramebufferObject().

For more information, see the OpenGL ES 3.X documentation for glBindFramebuffer() .

PySide6.QtGui.QOpenGLFunctions.glBindRenderbuffer(target, renderbuffer)
Parameters
  • target – int

  • renderbuffer – int

Convenience function that calls (target, renderbuffer).

For more information, see the OpenGL ES 3.X documentation for glBindRenderbuffer() .

PySide6.QtGui.QOpenGLFunctions.glBindTexture(target, texture)
Parameters
  • target – int

  • texture – int

Convenience function that calls (target, texture).

For more information, see the OpenGL ES 3.X documentation for glBindTexture() .

PySide6.QtGui.QOpenGLFunctions.glBlendColor(red, green, blue, alpha)
Parameters
  • red – float

  • green – float

  • blue – float

  • alpha – float

Convenience function that calls (red, green, blue, alpha).

For more information, see the OpenGL ES 3.X documentation for glBlendColor() .

PySide6.QtGui.QOpenGLFunctions.glBlendEquation(mode)
Parameters

mode – int

Convenience function that calls (mode).

For more information, see the OpenGL ES 3.X documentation for glBlendEquation() .

PySide6.QtGui.QOpenGLFunctions.glBlendEquationSeparate(modeRGB, modeAlpha)
Parameters
  • modeRGB – int

  • modeAlpha – int

Convenience function that calls (modeRGB, modeAlpha).

For more information, see the OpenGL ES 3.X documentation for glBlendEquationSeparate() .

PySide6.QtGui.QOpenGLFunctions.glBlendFunc(sfactor, dfactor)
Parameters
  • sfactor – int

  • dfactor – int

Convenience function that calls (sfactor, dfactor).

For more information, see the OpenGL ES 3.X documentation for glBlendFunc() .

PySide6.QtGui.QOpenGLFunctions.glBlendFuncSeparate(srcRGB, dstRGB, srcAlpha, dstAlpha)
Parameters
  • srcRGB – int

  • dstRGB – int

  • srcAlpha – int

  • dstAlpha – int

Convenience function that calls (srcRGB, dstRGB, srcAlpha, dstAlpha).

For more information, see the OpenGL ES 3.X documentation for glBlendFuncSeparate() .

PySide6.QtGui.QOpenGLFunctions.glCheckFramebufferStatus(target)
Parameters

target – int

Return type

int

Convenience function that calls (target).

For more information, see the OpenGL ES 3.X documentation for glCheckFramebufferStatus() .

PySide6.QtGui.QOpenGLFunctions.glClear(mask)
Parameters

mask – int

Convenience function that calls (mask).

For more information, see the OpenGL ES 3.X documentation for glClear() .

PySide6.QtGui.QOpenGLFunctions.glClearColor(red, green, blue, alpha)
Parameters
  • red – float

  • green – float

  • blue – float

  • alpha – float

Convenience function that calls (red, green, blue, alpha).

For more information, see the OpenGL ES 3.X documentation for glClearColor() .

PySide6.QtGui.QOpenGLFunctions.glClearDepthf(depth)
Parameters

depth – float

Convenience function that calls glClearDepth(depth) on desktop OpenGL systems and (depth) on embedded OpenGL ES systems.

For more information, see the OpenGL ES 3.X documentation for glClearDepthf() .

PySide6.QtGui.QOpenGLFunctions.glClearStencil(s)
Parameters

s – int

Convenience function that calls (s).

For more information, see the OpenGL ES 3.X documentation for glClearStencil() .

PySide6.QtGui.QOpenGLFunctions.glColorMask(red, green, blue, alpha)
Parameters
  • red – int

  • green – int

  • blue – int

  • alpha – int

Convenience function that calls (red, green, blue, alpha).

For more information, see the OpenGL ES 3.X documentation for glColorMask() .

PySide6.QtGui.QOpenGLFunctions.glCompileShader(shader)
Parameters

shader – int

Convenience function that calls (shader).

For more information, see the OpenGL ES 3.X documentation for glCompileShader() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glCompressedTexImage2D(target, level, internalformat, width, height, border, imageSize, data)
Parameters
  • target – int

  • level – int

  • internalformat – int

  • width – int

  • height – int

  • border – int

  • imageSize – int

  • datavoid

Convenience function that calls (target, level, internalformat, width, height, border, imageSize, data).

For more information, see the OpenGL ES 3.X documentation for glCompressedTexImage2D() .

PySide6.QtGui.QOpenGLFunctions.glCompressedTexSubImage2D(target, level, xoffset, yoffset, width, height, format, imageSize, data)
Parameters
  • target – int

  • level – int

  • xoffset – int

  • yoffset – int

  • width – int

  • height – int

  • format – int

  • imageSize – int

  • datavoid

Convenience function that calls (target, level, xoffset, yoffset, width, height, format, imageSize, data).

For more information, see the OpenGL ES 3.X documentation for glCompressedTexSubImage2D() .

PySide6.QtGui.QOpenGLFunctions.glCopyTexImage2D(target, level, internalformat, x, y, width, height, border)
Parameters
  • target – int

  • level – int

  • internalformat – int

  • x – int

  • y – int

  • width – int

  • height – int

  • border – int

Convenience function that calls (target, level, internalformat, x, y, width, height, border).

For more information, see the OpenGL ES 3.X documentation for glCopyTexImage2D() .

PySide6.QtGui.QOpenGLFunctions.glCopyTexSubImage2D(target, level, xoffset, yoffset, x, y, width, height)
Parameters
  • target – int

  • level – int

  • xoffset – int

  • yoffset – int

  • x – int

  • y – int

  • width – int

  • height – int

Convenience function that calls (target, level, xoffset, yoffset, x, y, width, height).

For more information, see the OpenGL ES 3.X documentation for glCopyTexSubImage2D() .

PySide6.QtGui.QOpenGLFunctions.glCreateProgram()
Return type

int

Convenience function that calls .

For more information, see the OpenGL ES 3.X documentation for glCreateProgram() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glCreateShader(type)
Parameters

type – int

Return type

int

Convenience function that calls (type).

For more information, see the OpenGL ES 3.X documentation for glCreateShader() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glCullFace(mode)
Parameters

mode – int

Convenience function that calls (mode).

For more information, see the OpenGL ES 3.X documentation for glCullFace() .

PySide6.QtGui.QOpenGLFunctions.glDeleteBuffers(n, buffers)
Parameters
  • n – int

  • buffers – int

Convenience function that calls (n, buffers).

For more information, see the OpenGL ES 3.X documentation for glDeleteBuffers() .

PySide6.QtGui.QOpenGLFunctions.glDeleteFramebuffers(n, framebuffers)
Parameters
  • n – int

  • framebuffers – int

Convenience function that calls (n, framebuffers).

For more information, see the OpenGL ES 3.X documentation for glDeleteFramebuffers() .

PySide6.QtGui.QOpenGLFunctions.glDeleteProgram(program)
Parameters

program – int

Convenience function that calls (program).

For more information, see the OpenGL ES 3.X documentation for glDeleteProgram() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glDeleteRenderbuffers(n, renderbuffers)
Parameters
  • n – int

  • renderbuffers – int

Convenience function that calls (n, renderbuffers).

For more information, see the OpenGL ES 3.X documentation for glDeleteRenderbuffers() .

PySide6.QtGui.QOpenGLFunctions.glDeleteShader(shader)
Parameters

shader – int

Convenience function that calls (shader).

For more information, see the OpenGL ES 3.X documentation for glDeleteShader() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glDeleteTextures(n, textures)
Parameters
  • n – int

  • textures – int

Convenience function that calls (n, textures).

For more information, see the OpenGL ES 3.X documentation for glDeleteTextures() .

PySide6.QtGui.QOpenGLFunctions.glDepthFunc(func)
Parameters

func – int

Convenience function that calls (func).

For more information, see the OpenGL ES 3.X documentation for glDepthFunc() .

PySide6.QtGui.QOpenGLFunctions.glDepthMask(flag)
Parameters

flag – int

Convenience function that calls (flag).

For more information, see the OpenGL ES 3.X documentation for glDepthMask() .

PySide6.QtGui.QOpenGLFunctions.glDepthRangef(zNear, zFar)
Parameters
  • zNear – float

  • zFar – float

Convenience function that calls glDepthRange(zNear, zFar) on desktop OpenGL systems and (zNear, zFar) on embedded OpenGL ES systems.

For more information, see the OpenGL ES 3.X documentation for glDepthRangef() .

PySide6.QtGui.QOpenGLFunctions.glDetachShader(program, shader)
Parameters
  • program – int

  • shader – int

Convenience function that calls (program, shader).

For more information, see the OpenGL ES 3.X documentation for glDetachShader() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glDisable(cap)
Parameters

cap – int

Convenience function that calls (cap).

For more information, see the OpenGL ES 3.X documentation for glDisable() .

PySide6.QtGui.QOpenGLFunctions.glDisableVertexAttribArray(index)
Parameters

index – int

Convenience function that calls (index).

For more information, see the OpenGL ES 3.X documentation for glDisableVertexAttribArray() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glDrawArrays(mode, first, count)
Parameters
  • mode – int

  • first – int

  • count – int

Convenience function that calls (mode, first, count).

For more information, see the OpenGL ES 3.X documentation for glDrawArrays() .

PySide6.QtGui.QOpenGLFunctions.glDrawElements(mode, count, type, indices)
Parameters
  • mode – int

  • count – int

  • type – int

  • indicesvoid

Convenience function that calls (mode, count, type, indices).

For more information, see the OpenGL ES 3.X documentation for glDrawElements() .

PySide6.QtGui.QOpenGLFunctions.glEnable(cap)
Parameters

cap – int

Convenience function that calls (cap).

For more information, see the OpenGL ES 3.X documentation for glEnable() .

PySide6.QtGui.QOpenGLFunctions.glEnableVertexAttribArray(index)
Parameters

index – int

Convenience function that calls (index).

For more information, see the OpenGL ES 3.X documentation for glEnableVertexAttribArray() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glFinish()

Convenience function that calls .

For more information, see the OpenGL ES 3.X documentation for glFinish() .

PySide6.QtGui.QOpenGLFunctions.glFlush()

Convenience function that calls .

For more information, see the OpenGL ES 3.X documentation for glFlush() .

PySide6.QtGui.QOpenGLFunctions.glFramebufferRenderbuffer(target, attachment, renderbuffertarget, renderbuffer)
Parameters
  • target – int

  • attachment – int

  • renderbuffertarget – int

  • renderbuffer – int

Convenience function that calls (target, attachment, renderbuffertarget, renderbuffer).

For more information, see the OpenGL ES 3.X documentation for glFramebufferRenderbuffer() .

PySide6.QtGui.QOpenGLFunctions.glFramebufferTexture2D(target, attachment, textarget, texture, level)
Parameters
  • target – int

  • attachment – int

  • textarget – int

  • texture – int

  • level – int

Convenience function that calls (target, attachment, textarget, texture, level).

For more information, see the OpenGL ES 3.X documentation for glFramebufferTexture2D() .

PySide6.QtGui.QOpenGLFunctions.glFrontFace(mode)
Parameters

mode – int

Convenience function that calls (mode).

For more information, see the OpenGL ES 3.X documentation for glFrontFace() .

PySide6.QtGui.QOpenGLFunctions.glGenBuffers(n, buffers)
Parameters
  • n – int

  • buffers – int

Convenience function that calls (n, buffers).

For more information, see the OpenGL ES 3.X documentation for glGenBuffers() .

PySide6.QtGui.QOpenGLFunctions.glGenFramebuffers(n, framebuffers)
Parameters
  • n – int

  • framebuffers – int

Convenience function that calls (n, framebuffers).

For more information, see the OpenGL ES 3.X documentation for glGenFramebuffers() .

PySide6.QtGui.QOpenGLFunctions.glGenRenderbuffers(n, renderbuffers)
Parameters
  • n – int

  • renderbuffers – int

Convenience function that calls (n, renderbuffers).

For more information, see the OpenGL ES 3.X documentation for glGenRenderbuffers() .

PySide6.QtGui.QOpenGLFunctions.glGenTextures(n, textures)
Parameters
  • n – int

  • textures – int

Convenience function that calls (n, textures).

For more information, see the OpenGL ES 3.X documentation for glGenTextures() .

PySide6.QtGui.QOpenGLFunctions.glGenerateMipmap(target)
Parameters

target – int

Convenience function that calls (target).

For more information, see the OpenGL ES 3.X documentation for glGenerateMipmap() .

PySide6.QtGui.QOpenGLFunctions.glGetAttachedShaders(program, maxcount, count, shaders)
Parameters
  • program – int

  • maxcount – int

  • count – int

  • shaders – int

Convenience function that calls (program, maxcount, count, shaders).

For more information, see the OpenGL ES 3.X documentation for glGetAttachedShaders() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glGetAttribLocation(program, name)
Parameters
  • program – int

  • name – str

Return type

int

Convenience function that calls (program, name).

For more information, see the OpenGL ES 3.X documentation for glGetAttribLocation() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glGetBufferParameteriv(target, pname, params)
Parameters
  • target – int

  • pname – int

  • params – int

Convenience function that calls (target, pname, params).

For more information, see the OpenGL ES 3.X documentation for glGetBufferParameteriv() .

PySide6.QtGui.QOpenGLFunctions.glGetError()
Return type

int

Convenience function that calls .

For more information, see the OpenGL ES 3.X documentation for glGetError() .

PySide6.QtGui.QOpenGLFunctions.glGetFloatv(pname, params)
Parameters
  • pname – int

  • params – float

Convenience function that calls (pname, params).

For more information, see the OpenGL ES 3.X documentation for glGetFloatv() .

PySide6.QtGui.QOpenGLFunctions.glGetFramebufferAttachmentParameteriv(target, attachment, pname, params)
Parameters
  • target – int

  • attachment – int

  • pname – int

  • params – int

Convenience function that calls (target, attachment, pname, params).

For more information, see the OpenGL ES 3.X documentation for glGetFramebufferAttachmentParameteriv() .

PySide6.QtGui.QOpenGLFunctions.glGetIntegerv(pname, params)
Parameters
  • pname – int

  • params – int

Convenience function that calls (pname, params).

For more information, see the OpenGL ES 3.X documentation for glGetIntegerv() .

PySide6.QtGui.QOpenGLFunctions.glGetProgramiv(program, pname, params)
Parameters
  • program – int

  • pname – int

  • params – int

Convenience function that calls (program, pname, params).

For more information, see the OpenGL ES 3.X documentation for glGetProgramiv() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glGetRenderbufferParameteriv(target, pname, params)
Parameters
  • target – int

  • pname – int

  • params – int

Convenience function that calls (target, pname, params).

For more information, see the OpenGL ES 3.X documentation for glGetRenderbufferParameteriv() .

PySide6.QtGui.QOpenGLFunctions.glGetShaderPrecisionFormat(shadertype, precisiontype, range, precision)
Parameters
  • shadertype – int

  • precisiontype – int

  • range – int

  • precision – int

Convenience function that calls (shadertype, precisiontype, range, precision).

For more information, see the OpenGL ES 3.X documentation for glGetShaderPrecisionFormat() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glGetShaderSource(shader)
Parameters

shaderuint

Return type

str

PySide6.QtGui.QOpenGLFunctions.glGetShaderiv(shader, pname, params)
Parameters
  • shader – int

  • pname – int

  • params – int

Convenience function that calls (shader, pname, params).

For more information, see the OpenGL ES 3.X documentation for glGetShaderiv() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glGetString(name)
Parameters

name – int

Return type

QString

Convenience function that calls (name).

For more information, see the OpenGL ES 3.X documentation for glGetString() .

PySide6.QtGui.QOpenGLFunctions.glGetTexParameterfv(target, pname, params)
Parameters
  • target – int

  • pname – int

  • params – float

Convenience function that calls (target, pname, params).

For more information, see the OpenGL ES 3.X documentation for glGetTexParameterfv() .

PySide6.QtGui.QOpenGLFunctions.glGetTexParameteriv(target, pname, params)
Parameters
  • target – int

  • pname – int

  • params – int

Convenience function that calls (target, pname, params).

For more information, see the OpenGL ES 3.X documentation for glGetTexParameteriv() .

PySide6.QtGui.QOpenGLFunctions.glGetUniformLocation(program, name)
Parameters
  • program – int

  • name – str

Return type

int

Convenience function that calls (program, name).

For more information, see the OpenGL ES 3.X documentation for glGetUniformLocation() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glGetUniformfv(program, location, params)
Parameters
  • program – int

  • location – int

  • params – float

Convenience function that calls (program, location, params).

For more information, see the OpenGL ES 3.X documentation for glGetUniformfv() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glGetUniformiv(program, location, params)
Parameters
  • program – int

  • location – int

  • params – int

Convenience function that calls (program, location, params).

For more information, see the OpenGL ES 3.X documentation for glGetUniformiv() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glGetVertexAttribfv(index, pname, params)
Parameters
  • index – int

  • pname – int

  • params – float

Convenience function that calls (index, pname, params).

For more information, see the OpenGL ES 3.X documentation for glGetVertexAttribfv() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glGetVertexAttribiv(index, pname, params)
Parameters
  • index – int

  • pname – int

  • params – int

Convenience function that calls (index, pname, params).

For more information, see the OpenGL ES 3.X documentation for glGetVertexAttribiv() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glHint(target, mode)
Parameters
  • target – int

  • mode – int

Convenience function that calls (target, mode).

For more information, see the OpenGL ES 3.X documentation for glHint() .

PySide6.QtGui.QOpenGLFunctions.glIsBuffer(buffer)
Parameters

buffer – int

Return type

int

Convenience function that calls (buffer).

For more information, see the OpenGL ES 3.X documentation for glIsBuffer() .

PySide6.QtGui.QOpenGLFunctions.glIsEnabled(cap)
Parameters

cap – int

Return type

int

Convenience function that calls (cap).

For more information, see the OpenGL ES 3.X documentation for glIsEnabled() .

PySide6.QtGui.QOpenGLFunctions.glIsFramebuffer(framebuffer)
Parameters

framebuffer – int

Return type

int

Convenience function that calls (framebuffer).

For more information, see the OpenGL ES 3.X documentation for glIsFramebuffer() .

PySide6.QtGui.QOpenGLFunctions.glIsProgram(program)
Parameters

program – int

Return type

int

Convenience function that calls (program).

For more information, see the OpenGL ES 3.X documentation for glIsProgram() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glIsRenderbuffer(renderbuffer)
Parameters

renderbuffer – int

Return type

int

Convenience function that calls (renderbuffer).

For more information, see the OpenGL ES 3.X documentation for glIsRenderbuffer() .

PySide6.QtGui.QOpenGLFunctions.glIsShader(shader)
Parameters

shader – int

Return type

int

Convenience function that calls (shader).

For more information, see the OpenGL ES 3.X documentation for glIsShader() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glIsTexture(texture)
Parameters

texture – int

Return type

int

Convenience function that calls (texture).

For more information, see the OpenGL ES 3.X documentation for glIsTexture() .

PySide6.QtGui.QOpenGLFunctions.glLineWidth(width)
Parameters

width – float

Convenience function that calls (width).

For more information, see the OpenGL ES 3.X documentation for glLineWidth() .

PySide6.QtGui.QOpenGLFunctions.glLinkProgram(program)
Parameters

program – int

Convenience function that calls (program).

For more information, see the OpenGL ES 3.X documentation for glLinkProgram() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glPixelStorei(pname, param)
Parameters
  • pname – int

  • param – int

Convenience function that calls (pname, param).

For more information, see the OpenGL ES 3.X documentation for glPixelStorei() .

PySide6.QtGui.QOpenGLFunctions.glPolygonOffset(factor, units)
Parameters
  • factor – float

  • units – float

Convenience function that calls (factor, units).

For more information, see the OpenGL ES 3.X documentation for glPolygonOffset() .

PySide6.QtGui.QOpenGLFunctions.glReadPixels(x, y, width, height, format, type, pixels)
Parameters
  • x – int

  • y – int

  • width – int

  • height – int

  • format – int

  • type – int

  • pixelsvoid

Convenience function that calls (x, y, width, height, format, type, pixels).

For more information, see the OpenGL ES 3.X documentation for glReadPixels() .

PySide6.QtGui.QOpenGLFunctions.glReleaseShaderCompiler()

Convenience function that calls .

For more information, see the OpenGL ES 3.X documentation for glReleaseShaderCompiler() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glRenderbufferStorage(target, internalformat, width, height)
Parameters
  • target – int

  • internalformat – int

  • width – int

  • height – int

Convenience function that calls (target, internalformat, width, height).

For more information, see the OpenGL ES 3.X documentation for glRenderbufferStorage() .

PySide6.QtGui.QOpenGLFunctions.glSampleCoverage(value, invert)
Parameters
  • value – float

  • invert – int

Convenience function that calls (value, invert).

For more information, see the OpenGL ES 3.X documentation for glSampleCoverage() .

PySide6.QtGui.QOpenGLFunctions.glScissor(x, y, width, height)
Parameters
  • x – int

  • y – int

  • width – int

  • height – int

Convenience function that calls (x, y, width, height).

For more information, see the OpenGL ES 3.X documentation for glScissor() .

PySide6.QtGui.QOpenGLFunctions.glShaderBinary(n, shaders, binaryformat, binary, length)
Parameters
  • n – int

  • shaders – int

  • binaryformat – int

  • binaryvoid

  • length – int

Convenience function that calls (n, shaders, binaryformat, binary, length).

For more information, see the OpenGL ES 3.X documentation for glShaderBinary() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glShaderSource(shader, source)
Parameters
  • shaderuint

  • source – str

PySide6.QtGui.QOpenGLFunctions.glStencilFunc(func, ref, mask)
Parameters
  • func – int

  • ref – int

  • mask – int

Convenience function that calls (func, ref, mask).

For more information, see the OpenGL ES 3.X documentation for glStencilFunc() .

PySide6.QtGui.QOpenGLFunctions.glStencilFuncSeparate(face, func, ref, mask)
Parameters
  • face – int

  • func – int

  • ref – int

  • mask – int

Convenience function that calls (face, func, ref, mask).

For more information, see the OpenGL ES 3.X documentation for glStencilFuncSeparate() .

PySide6.QtGui.QOpenGLFunctions.glStencilMask(mask)
Parameters

mask – int

Convenience function that calls (mask).

For more information, see the OpenGL ES 3.X documentation for glStencilMask() .

PySide6.QtGui.QOpenGLFunctions.glStencilMaskSeparate(face, mask)
Parameters
  • face – int

  • mask – int

Convenience function that calls (face, mask).

For more information, see the OpenGL ES 3.X documentation for glStencilMaskSeparate() .

PySide6.QtGui.QOpenGLFunctions.glStencilOp(fail, zfail, zpass)
Parameters
  • fail – int

  • zfail – int

  • zpass – int

Convenience function that calls (fail, zfail, zpass).

For more information, see the OpenGL ES 3.X documentation for glStencilOp() .

PySide6.QtGui.QOpenGLFunctions.glStencilOpSeparate(face, fail, zfail, zpass)
Parameters
  • face – int

  • fail – int

  • zfail – int

  • zpass – int

Convenience function that calls (face, fail, zfail, zpass).

For more information, see the OpenGL ES 3.X documentation for glStencilOpSeparate() .

PySide6.QtGui.QOpenGLFunctions.glTexImage2D(target, level, internalformat, width, height, border, format, type, pixels)
Parameters
  • target – int

  • level – int

  • internalformat – int

  • width – int

  • height – int

  • border – int

  • format – int

  • type – int

  • pixelsvoid

Convenience function that calls (target, level, internalformat, width, height, border, format, type, pixels).

For more information, see the OpenGL ES 3.X documentation for glTexImage2D() .

PySide6.QtGui.QOpenGLFunctions.glTexParameterf(target, pname, param)
Parameters
  • target – int

  • pname – int

  • param – float

Convenience function that calls (target, pname, param).

For more information, see the OpenGL ES 3.X documentation for glTexParameterf() .

PySide6.QtGui.QOpenGLFunctions.glTexParameterfv(target, pname, params)
Parameters
  • target – int

  • pname – int

  • params – float

Convenience function that calls (target, pname, params).

For more information, see the OpenGL ES 3.X documentation for glTexParameterfv() .

PySide6.QtGui.QOpenGLFunctions.glTexParameteri(target, pname, param)
Parameters
  • target – int

  • pname – int

  • param – int

Convenience function that calls (target, pname, param).

For more information, see the OpenGL ES 3.X documentation for glTexParameteri() .

PySide6.QtGui.QOpenGLFunctions.glTexParameteriv(target, pname, params)
Parameters
  • target – int

  • pname – int

  • params – int

Convenience function that calls (target, pname, params).

For more information, see the OpenGL ES 3.X documentation for glTexParameteriv() .

PySide6.QtGui.QOpenGLFunctions.glTexSubImage2D(target, level, xoffset, yoffset, width, height, format, type, pixels)
Parameters
  • target – int

  • level – int

  • xoffset – int

  • yoffset – int

  • width – int

  • height – int

  • format – int

  • type – int

  • pixelsvoid

Convenience function that calls (target, level, xoffset, yoffset, width, height, format, type, pixels).

For more information, see the OpenGL ES 3.X documentation for glTexSubImage2D() .

PySide6.QtGui.QOpenGLFunctions.glUniform1f(location, x)
Parameters
  • location – int

  • x – float

Convenience function that calls (location, x).

For more information, see the OpenGL ES 3.X documentation for glUniform1f() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glUniform1fv(location, count, v)
Parameters
  • location – int

  • count – int

  • v – float

Convenience function that calls (location, count, v).

For more information, see the OpenGL ES 3.X documentation for glUniform1fv() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glUniform1i(location, x)
Parameters
  • location – int

  • x – int

Convenience function that calls (location, x).

For more information, see the OpenGL ES 3.X documentation for glUniform1i() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glUniform1iv(location, count, v)
Parameters
  • location – int

  • count – int

  • v – int

Convenience function that calls (location, count, v).

For more information, see the OpenGL ES 3.X documentation for glUniform1iv() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glUniform2f(location, x, y)
Parameters
  • location – int

  • x – float

  • y – float

Convenience function that calls (location, x, y).

For more information, see the OpenGL ES 3.X documentation for glUniform2f() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glUniform2fv(location, count, v)
Parameters
  • location – int

  • count – int

  • v – float

Convenience function that calls (location, count, v).

For more information, see the OpenGL ES 3.X documentation for glUniform2fv() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glUniform2i(location, x, y)
Parameters
  • location – int

  • x – int

  • y – int

Convenience function that calls (location, x, y).

For more information, see the OpenGL ES 3.X documentation for glUniform2i() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glUniform2iv(location, count, v)
Parameters
  • location – int

  • count – int

  • v – int

Convenience function that calls (location, count, v).

For more information, see the OpenGL ES 3.X documentation for glUniform2iv() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glUniform3f(location, x, y, z)
Parameters
  • location – int

  • x – float

  • y – float

  • z – float

Convenience function that calls (location, x, y, z).

For more information, see the OpenGL ES 3.X documentation for glUniform3f() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glUniform3fv(location, count, v)
Parameters
  • location – int

  • count – int

  • v – float

Convenience function that calls (location, count, v).

For more information, see the OpenGL ES 3.X documentation for glUniform3fv() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glUniform3i(location, x, y, z)
Parameters
  • location – int

  • x – int

  • y – int

  • z – int

Convenience function that calls (location, x, y, z).

For more information, see the OpenGL ES 3.X documentation for glUniform3i() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glUniform3iv(location, count, v)
Parameters
  • location – int

  • count – int

  • v – int

Convenience function that calls (location, count, v).

For more information, see the OpenGL ES 3.X documentation for glUniform3iv() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glUniform4f(location, x, y, z, w)
Parameters
  • location – int

  • x – float

  • y – float

  • z – float

  • w – float

Convenience function that calls (location, x, y, z, w).

For more information, see the OpenGL ES 3.X documentation for glUniform4f() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glUniform4fv(location, count, v)
Parameters
  • location – int

  • count – int

  • v – float

Convenience function that calls (location, count, v).

For more information, see the OpenGL ES 3.X documentation for glUniform4fv() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glUniform4i(location, x, y, z, w)
Parameters
  • location – int

  • x – int

  • y – int

  • z – int

  • w – int

Convenience function that calls (location, x, y, z, w).

For more information, see the OpenGL ES 3.X documentation for glUniform4i() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glUniform4iv(location, count, v)
Parameters
  • location – int

  • count – int

  • v – int

Convenience function that calls (location, count, v).

For more information, see the OpenGL ES 3.X documentation for glUniform4iv() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glUniformMatrix2fv(location, count, transpose, value)
Parameters
  • location – int

  • count – int

  • transpose – int

  • value – float

Convenience function that calls (location, count, transpose, value).

For more information, see the OpenGL ES 3.X documentation for glUniformMatrix2fv() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glUniformMatrix3fv(location, count, transpose, value)
Parameters
  • location – int

  • count – int

  • transpose – int

  • value – float

Convenience function that calls (location, count, transpose, value).

For more information, see the OpenGL ES 3.X documentation for glUniformMatrix3fv() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glUniformMatrix4fv(location, count, transpose, value)
Parameters
  • location – int

  • count – int

  • transpose – int

  • value – float

Convenience function that calls (location, count, transpose, value).

For more information, see the OpenGL ES 3.X documentation for glUniformMatrix4fv() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glUseProgram(program)
Parameters

program – int

Convenience function that calls (program).

For more information, see the OpenGL ES 3.X documentation for glUseProgram() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glValidateProgram(program)
Parameters

program – int

Convenience function that calls (program).

For more information, see the OpenGL ES 3.X documentation for glValidateProgram() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glVertexAttrib1f(indx, x)
Parameters
  • indx – int

  • x – float

Convenience function that calls (indx, x).

For more information, see the OpenGL ES 3.X documentation for glVertexAttrib1f() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glVertexAttrib1fv(indx, values)
Parameters
  • indx – int

  • values – float

Convenience function that calls (indx, values).

For more information, see the OpenGL ES 3.X documentation for glVertexAttrib1fv() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glVertexAttrib2f(indx, x, y)
Parameters
  • indx – int

  • x – float

  • y – float

Convenience function that calls (indx, x, y).

For more information, see the OpenGL ES 3.X documentation for glVertexAttrib2f() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glVertexAttrib2fv(indx, values)
Parameters
  • indx – int

  • values – float

Convenience function that calls (indx, values).

For more information, see the OpenGL ES 3.X documentation for glVertexAttrib2fv() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glVertexAttrib3f(indx, x, y, z)
Parameters
  • indx – int

  • x – float

  • y – float

  • z – float

Convenience function that calls (indx, x, y, z).

For more information, see the OpenGL ES 3.X documentation for glVertexAttrib3f() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glVertexAttrib3fv(indx, values)
Parameters
  • indx – int

  • values – float

Convenience function that calls (indx, values).

For more information, see the OpenGL ES 3.X documentation for glVertexAttrib3fv() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glVertexAttrib4f(indx, x, y, z, w)
Parameters
  • indx – int

  • x – float

  • y – float

  • z – float

  • w – float

Convenience function that calls (indx, x, y, z, w).

For more information, see the OpenGL ES 3.X documentation for glVertexAttrib4f() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glVertexAttrib4fv(indx, values)
Parameters
  • indx – int

  • values – float

Convenience function that calls (indx, values).

For more information, see the OpenGL ES 3.X documentation for glVertexAttrib4fv() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glVertexAttribPointer(indx, size, type, normalized, stride, ptr)
Parameters
  • indx – int

  • size – int

  • type – int

  • normalized – int

  • stride – int

  • ptrvoid

Convenience function that calls (indx, size, type, normalized, stride, ptr).

For more information, see the OpenGL ES 3.X documentation for glVertexAttribPointer() .

This convenience function will do nothing on OpenGL ES 1.x systems.

PySide6.QtGui.QOpenGLFunctions.glViewport(x, y, width, height)
Parameters
  • x – int

  • y – int

  • width – int

  • height – int

Convenience function that calls (x, y, width, height).

For more information, see the OpenGL ES 3.X documentation for glViewport() .

PySide6.QtGui.QOpenGLFunctions.hasOpenGLFeature(feature)
Parameters

featureOpenGLFeature

Return type

bool

Returns true if feature is present on this system’s OpenGL implementation; false otherwise.

It is assumed that the QOpenGLContext associated with this function resolver is current.

See also

openGLFeatures()

PySide6.QtGui.QOpenGLFunctions.initializeOpenGLFunctions()

Initializes OpenGL function resolution for the current context.

After calling this function, the QOpenGLFunctions object can only be used with the current context and other contexts that share with it. Call again to change the object’s context association.

PySide6.QtGui.QOpenGLFunctions.openGLFeatures()
Return type

OpenGLFeatures

Returns the set of features that are present on this system’s OpenGL implementation.

It is assumed that the QOpenGLContext associated with this function resolver is current.