QOpenGLFunctions

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

Inheritance diagram of PySide2.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 : public QWindow, protected QOpenGLFunctions
{
    Q_OBJECT
public:
    MyGLWindow(QScreen *screen = 0);

protected:
    void initializeGL();
    void paintGL();

    QOpenGLContext *m_context;
};

MyGLWindow(QScreen *screen)
  : QWindow(screen), QOpenGLWidget(parent)
{
    setSurfaceType(OpenGLSurface);
    create();

    // Create an OpenGL context
    m_context = new QOpenGLContext;
    m_context->create();

    // Setup scene and render it
    initializeGL();
    paintGL();
}

void MyGLWindow::initializeGL()
{
    m_context->makeCurrent(this);
    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:

void MyGLWindow::paintGL()
{
    m_context->makeCurrent(this);
    glActiveTexture(GL_TEXTURE1);
    glBindTexture(GL_TEXTURE_2D, textureId);
    ...
    m_context->swapBuffers(this);
    m_context->doneCurrent();
}

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

QOpenGLFunctions 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.

QOpenGLFunctions *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:

QOpenGLFunctions funcs(QOpenGLContext::currentContext());
bool npot = funcs.hasOpenGLFeature(QOpenGLFunctions::NPOTTextures);
class QOpenGLFunctions

QOpenGLFunctions(context)

param context

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.

PySide2.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.

PySide2.QtGui.QOpenGLFunctions.glActiveTexture(texture)
Parameters

textureGLenum

Convenience function that calls (texture ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glAttachShader(program, shader)
Parameters
  • programGLuint

  • shaderGLuint

Convenience function that calls (program , shader ).

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glBindAttribLocation(program, index, name)
Parameters
  • programGLuint

  • indexGLuint

  • name – str

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glBindBuffer(target, buffer)
Parameters
  • targetGLenum

  • bufferGLuint

Convenience function that calls (target , buffer ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glBindFramebuffer(target, framebuffer)
Parameters
  • targetGLenum

  • framebufferGLuint

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 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glBindRenderbuffer(target, renderbuffer)
Parameters
  • targetGLenum

  • renderbufferGLuint

Convenience function that calls (target , renderbuffer ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glBindTexture(target, texture)
Parameters
  • targetGLenum

  • textureGLuint

Convenience function that calls (target , texture ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glBlendColor(red, green, blue, alpha)
Parameters
  • redGLclampf

  • greenGLclampf

  • blueGLclampf

  • alphaGLclampf

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glBlendEquation(mode)
Parameters

modeGLenum

Convenience function that calls (mode ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glBlendEquationSeparate(modeRGB, modeAlpha)
Parameters
  • modeRGBGLenum

  • modeAlphaGLenum

Convenience function that calls (modeRGB , modeAlpha ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glBlendFunc(sfactor, dfactor)
Parameters
  • sfactorGLenum

  • dfactorGLenum

Convenience function that calls (sfactor , dfactor ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glBlendFuncSeparate(srcRGB, dstRGB, srcAlpha, dstAlpha)
Parameters
  • srcRGBGLenum

  • dstRGBGLenum

  • srcAlphaGLenum

  • dstAlphaGLenum

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glCheckFramebufferStatus(target)
Parameters

targetGLenum

Return type

GLenum

Convenience function that calls (target ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glClear(mask)
Parameters

maskGLbitfield

Convenience function that calls (mask ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glClearColor(red, green, blue, alpha)
Parameters
  • redGLclampf

  • greenGLclampf

  • blueGLclampf

  • alphaGLclampf

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glClearDepthf(depth)
Parameters

depthGLclampf

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glClearStencil(s)
Parameters

sGLint

Convenience function that calls (s ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glColorMask(red, green, blue, alpha)
Parameters
  • redGLboolean

  • greenGLboolean

  • blueGLboolean

  • alphaGLboolean

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glCompileShader(shader)
Parameters

shaderGLuint

Convenience function that calls (shader ).

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glCompressedTexImage2D(target, level, internalformat, width, height, border, imageSize, data)
Parameters
  • targetGLenum

  • levelGLint

  • internalformatGLenum

  • widthGLsizei

  • heightGLsizei

  • borderGLint

  • imageSizeGLsizei

  • datavoid

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glCompressedTexSubImage2D(target, level, xoffset, yoffset, width, height, format, imageSize, data)
Parameters
  • targetGLenum

  • levelGLint

  • xoffsetGLint

  • yoffsetGLint

  • widthGLsizei

  • heightGLsizei

  • formatGLenum

  • imageSizeGLsizei

  • datavoid

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glCopyTexImage2D(target, level, internalformat, x, y, width, height, border)
Parameters
  • targetGLenum

  • levelGLint

  • internalformatGLenum

  • xGLint

  • yGLint

  • widthGLsizei

  • heightGLsizei

  • borderGLint

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glCopyTexSubImage2D(target, level, xoffset, yoffset, x, y, width, height)
Parameters
  • targetGLenum

  • levelGLint

  • xoffsetGLint

  • yoffsetGLint

  • xGLint

  • yGLint

  • widthGLsizei

  • heightGLsizei

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glCreateProgram()
Return type

GLuint

Convenience function that calls .

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glCreateShader(type)
Parameters

typeGLenum

Return type

GLuint

Convenience function that calls (type ).

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glCullFace(mode)
Parameters

modeGLenum

Convenience function that calls (mode ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glDeleteBuffers(n, buffers)
Parameters
  • nGLsizei

  • buffersGLuint

Convenience function that calls (n , buffers ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glDeleteFramebuffers(n, framebuffers)
Parameters
  • nGLsizei

  • framebuffersGLuint

Convenience function that calls (n , framebuffers ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glDeleteProgram(program)
Parameters

programGLuint

Convenience function that calls (program ).

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glDeleteRenderbuffers(n, renderbuffers)
Parameters
  • nGLsizei

  • renderbuffersGLuint

Convenience function that calls (n , renderbuffers ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glDeleteShader(shader)
Parameters

shaderGLuint

Convenience function that calls (shader ).

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glDeleteTextures(n, textures)
Parameters
  • nGLsizei

  • texturesGLuint

Convenience function that calls (n , textures ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glDepthFunc(func)
Parameters

funcGLenum

Convenience function that calls (func ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glDepthMask(flag)
Parameters

flagGLboolean

Convenience function that calls (flag ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glDepthRangef(zNear, zFar)
Parameters
  • zNearGLclampf

  • zFarGLclampf

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 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glDetachShader(program, shader)
Parameters
  • programGLuint

  • shaderGLuint

Convenience function that calls (program , shader ).

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glDisable(cap)
Parameters

capGLenum

Convenience function that calls (cap ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glDisableVertexAttribArray(index)
Parameters

indexGLuint

Convenience function that calls (index ).

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glDrawArrays(mode, first, count)
Parameters
  • modeGLenum

  • firstGLint

  • countGLsizei

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glDrawElements(mode, count, type, indices)
Parameters
  • modeGLenum

  • countGLsizei

  • typeGLenum

  • indicesvoid

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glEnable(cap)
Parameters

capGLenum

Convenience function that calls (cap ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glEnableVertexAttribArray(index)
Parameters

indexGLuint

Convenience function that calls (index ).

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glFinish()

Convenience function that calls .

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glFlush()

Convenience function that calls .

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glFramebufferRenderbuffer(target, attachment, renderbuffertarget, renderbuffer)
Parameters
  • targetGLenum

  • attachmentGLenum

  • renderbuffertargetGLenum

  • renderbufferGLuint

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glFramebufferTexture2D(target, attachment, textarget, texture, level)
Parameters
  • targetGLenum

  • attachmentGLenum

  • textargetGLenum

  • textureGLuint

  • levelGLint

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glFrontFace(mode)
Parameters

modeGLenum

Convenience function that calls (mode ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glGenBuffers(n, buffers)
Parameters
  • nGLsizei

  • buffersGLuint

Convenience function that calls (n , buffers ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glGenFramebuffers(n, framebuffers)
Parameters
  • nGLsizei

  • framebuffersGLuint

Convenience function that calls (n , framebuffers ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glGenRenderbuffers(n, renderbuffers)
Parameters
  • nGLsizei

  • renderbuffersGLuint

Convenience function that calls (n , renderbuffers ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glGenTextures(n, textures)
Parameters
  • nGLsizei

  • texturesGLuint

Convenience function that calls (n , textures ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glGenerateMipmap(target)
Parameters

targetGLenum

Convenience function that calls (target ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glGetAttachedShaders(program, maxcount, count, shaders)
Parameters
  • programGLuint

  • maxcountGLsizei

  • countGLsizei

  • shadersGLuint

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glGetAttribLocation(program, name)
Parameters
  • programGLuint

  • name – str

Return type

GLint

Convenience function that calls (program , name ).

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glGetBufferParameteriv(target, pname, params)
Parameters
  • targetGLenum

  • pnameGLenum

  • paramsGLint

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glGetError()
Return type

GLenum

Convenience function that calls .

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glGetFloatv(pname, params)
Parameters
  • pnameGLenum

  • paramsGLfloat

Convenience function that calls (pname , params ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glGetFramebufferAttachmentParameteriv(target, attachment, pname, params)
Parameters
  • targetGLenum

  • attachmentGLenum

  • pnameGLenum

  • paramsGLint

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glGetIntegerv(pname, params)
Parameters
  • pnameGLenum

  • paramsGLint

Convenience function that calls (pname , params ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glGetProgramiv(program, pname, params)
Parameters
  • programGLuint

  • pnameGLenum

  • paramsGLint

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glGetRenderbufferParameteriv(target, pname, params)
Parameters
  • targetGLenum

  • pnameGLenum

  • paramsGLint

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glGetShaderPrecisionFormat(shadertype, precisiontype, range, precision)
Parameters
  • shadertypeGLenum

  • precisiontypeGLenum

  • rangeGLint

  • precisionGLint

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glGetShaderiv(shader, pname, params)
Parameters
  • shaderGLuint

  • pnameGLenum

  • paramsGLint

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glGetString(name)
Parameters

nameGLenum

Return type

GLubyte

Convenience function that calls (name ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glGetTexParameterfv(target, pname, params)
Parameters
  • targetGLenum

  • pnameGLenum

  • paramsGLfloat

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glGetTexParameteriv(target, pname, params)
Parameters
  • targetGLenum

  • pnameGLenum

  • paramsGLint

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glGetUniformLocation(program, name)
Parameters
  • programGLuint

  • name – str

Return type

GLint

Convenience function that calls (program , name ).

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glGetUniformfv(program, location, params)
Parameters
  • programGLuint

  • locationGLint

  • paramsGLfloat

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glGetUniformiv(program, location, params)
Parameters
  • programGLuint

  • locationGLint

  • paramsGLint

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glGetVertexAttribfv(index, pname, params)
Parameters
  • indexGLuint

  • pnameGLenum

  • paramsGLfloat

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glGetVertexAttribiv(index, pname, params)
Parameters
  • indexGLuint

  • pnameGLenum

  • paramsGLint

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glHint(target, mode)
Parameters
  • targetGLenum

  • modeGLenum

Convenience function that calls (target , mode ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glIsBuffer(buffer)
Parameters

bufferGLuint

Return type

GLboolean

Convenience function that calls (buffer ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glIsEnabled(cap)
Parameters

capGLenum

Return type

GLboolean

Convenience function that calls (cap ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glIsFramebuffer(framebuffer)
Parameters

framebufferGLuint

Return type

GLboolean

Convenience function that calls (framebuffer ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glIsProgram(program)
Parameters

programGLuint

Return type

GLboolean

Convenience function that calls (program ).

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glIsRenderbuffer(renderbuffer)
Parameters

renderbufferGLuint

Return type

GLboolean

Convenience function that calls (renderbuffer ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glIsShader(shader)
Parameters

shaderGLuint

Return type

GLboolean

Convenience function that calls (shader ).

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glIsTexture(texture)
Parameters

textureGLuint

Return type

GLboolean

Convenience function that calls (texture ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glLineWidth(width)
Parameters

widthGLfloat

Convenience function that calls (width ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glLinkProgram(program)
Parameters

programGLuint

Convenience function that calls (program ).

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glPixelStorei(pname, param)
Parameters
  • pnameGLenum

  • paramGLint

Convenience function that calls (pname , param ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glPolygonOffset(factor, units)
Parameters
  • factorGLfloat

  • unitsGLfloat

Convenience function that calls (factor , units ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glReadPixels(x, y, width, height, format, type, pixels)
Parameters
  • xGLint

  • yGLint

  • widthGLsizei

  • heightGLsizei

  • formatGLenum

  • typeGLenum

  • pixelsvoid

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glReleaseShaderCompiler()

Convenience function that calls .

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glRenderbufferStorage(target, internalformat, width, height)
Parameters
  • targetGLenum

  • internalformatGLenum

  • widthGLsizei

  • heightGLsizei

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glSampleCoverage(value, invert)
Parameters
  • valueGLclampf

  • invertGLboolean

Convenience function that calls (value , invert ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glScissor(x, y, width, height)
Parameters
  • xGLint

  • yGLint

  • widthGLsizei

  • heightGLsizei

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glShaderBinary(n, shaders, binaryformat, binary, length)
Parameters
  • nGLint

  • shadersGLuint

  • binaryformatGLenum

  • binaryvoid

  • lengthGLint

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glStencilFunc(func, ref, mask)
Parameters
  • funcGLenum

  • refGLint

  • maskGLuint

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glStencilFuncSeparate(face, func, ref, mask)
Parameters
  • faceGLenum

  • funcGLenum

  • refGLint

  • maskGLuint

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glStencilMask(mask)
Parameters

maskGLuint

Convenience function that calls (mask ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glStencilMaskSeparate(face, mask)
Parameters
  • faceGLenum

  • maskGLuint

Convenience function that calls (face , mask ).

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glStencilOp(fail, zfail, zpass)
Parameters
  • failGLenum

  • zfailGLenum

  • zpassGLenum

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glStencilOpSeparate(face, fail, zfail, zpass)
Parameters
  • faceGLenum

  • failGLenum

  • zfailGLenum

  • zpassGLenum

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glTexImage2D(target, level, internalformat, width, height, border, format, type, pixels)
Parameters
  • targetGLenum

  • levelGLint

  • internalformatGLint

  • widthGLsizei

  • heightGLsizei

  • borderGLint

  • formatGLenum

  • typeGLenum

  • pixelsvoid

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glTexParameterf(target, pname, param)
Parameters
  • targetGLenum

  • pnameGLenum

  • paramGLfloat

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glTexParameterfv(target, pname, params)
Parameters
  • targetGLenum

  • pnameGLenum

  • paramsGLfloat

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glTexParameteri(target, pname, param)
Parameters
  • targetGLenum

  • pnameGLenum

  • paramGLint

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glTexParameteriv(target, pname, params)
Parameters
  • targetGLenum

  • pnameGLenum

  • paramsGLint

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glTexSubImage2D(target, level, xoffset, yoffset, width, height, format, type, pixels)
Parameters
  • targetGLenum

  • levelGLint

  • xoffsetGLint

  • yoffsetGLint

  • widthGLsizei

  • heightGLsizei

  • formatGLenum

  • typeGLenum

  • pixelsvoid

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.QtGui.QOpenGLFunctions.glUniform1f(location, x)
Parameters
  • locationGLint

  • xGLfloat

Convenience function that calls (location , x ).

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glUniform1fv(location, count, v)
Parameters
  • locationGLint

  • countGLsizei

  • vGLfloat

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glUniform1i(location, x)
Parameters
  • locationGLint

  • xGLint

Convenience function that calls (location , x ).

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glUniform1iv(location, count, v)
Parameters
  • locationGLint

  • countGLsizei

  • vGLint

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glUniform2f(location, x, y)
Parameters
  • locationGLint

  • xGLfloat

  • yGLfloat

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glUniform2fv(location, count, v)
Parameters
  • locationGLint

  • countGLsizei

  • vGLfloat

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glUniform2i(location, x, y)
Parameters
  • locationGLint

  • xGLint

  • yGLint

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glUniform2iv(location, count, v)
Parameters
  • locationGLint

  • countGLsizei

  • vGLint

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glUniform3f(location, x, y, z)
Parameters
  • locationGLint

  • xGLfloat

  • yGLfloat

  • zGLfloat

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glUniform3fv(location, count, v)
Parameters
  • locationGLint

  • countGLsizei

  • vGLfloat

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glUniform3i(location, x, y, z)
Parameters
  • locationGLint

  • xGLint

  • yGLint

  • zGLint

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glUniform3iv(location, count, v)
Parameters
  • locationGLint

  • countGLsizei

  • vGLint

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glUniform4f(location, x, y, z, w)
Parameters
  • locationGLint

  • xGLfloat

  • yGLfloat

  • zGLfloat

  • wGLfloat

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glUniform4fv(location, count, v)
Parameters
  • locationGLint

  • countGLsizei

  • vGLfloat

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glUniform4i(location, x, y, z, w)
Parameters
  • locationGLint

  • xGLint

  • yGLint

  • zGLint

  • wGLint

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glUniform4iv(location, count, v)
Parameters
  • locationGLint

  • countGLsizei

  • vGLint

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glUniformMatrix2fv(location, count, transpose, value)
Parameters
  • locationGLint

  • countGLsizei

  • transposeGLboolean

  • valueGLfloat

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glUniformMatrix3fv(location, count, transpose, value)
Parameters
  • locationGLint

  • countGLsizei

  • transposeGLboolean

  • valueGLfloat

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glUniformMatrix4fv(location, count, transpose, value)
Parameters
  • locationGLint

  • countGLsizei

  • transposeGLboolean

  • valueGLfloat

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glUseProgram(program)
Parameters

programGLuint

Convenience function that calls (program ).

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glValidateProgram(program)
Parameters

programGLuint

Convenience function that calls (program ).

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glVertexAttrib1f(indx, x)
Parameters
  • indxGLuint

  • xGLfloat

Convenience function that calls (indx , x ).

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glVertexAttrib1fv(indx, values)
Parameters
  • indxGLuint

  • valuesGLfloat

Convenience function that calls (indx , values ).

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glVertexAttrib2f(indx, x, y)
Parameters
  • indxGLuint

  • xGLfloat

  • yGLfloat

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glVertexAttrib2fv(indx, values)
Parameters
  • indxGLuint

  • valuesGLfloat

Convenience function that calls (indx , values ).

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glVertexAttrib3f(indx, x, y, z)
Parameters
  • indxGLuint

  • xGLfloat

  • yGLfloat

  • zGLfloat

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glVertexAttrib3fv(indx, values)
Parameters
  • indxGLuint

  • valuesGLfloat

Convenience function that calls (indx , values ).

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glVertexAttrib4f(indx, x, y, z, w)
Parameters
  • indxGLuint

  • xGLfloat

  • yGLfloat

  • zGLfloat

  • wGLfloat

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glVertexAttrib4fv(indx, values)
Parameters
  • indxGLuint

  • valuesGLfloat

Convenience function that calls (indx , values ).

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glVertexAttribPointer(indx, size, type, normalized, stride, ptr)
Parameters
  • indxGLuint

  • sizeGLint

  • typeGLenum

  • normalizedGLboolean

  • strideGLsizei

  • ptrvoid

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

For more information, see the OpenGL ES 2.0 documentation for .

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

PySide2.QtGui.QOpenGLFunctions.glViewport(x, y, width, height)
Parameters
  • xGLint

  • yGLint

  • widthGLsizei

  • heightGLsizei

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

For more information, see the OpenGL ES 2.0 documentation for .

PySide2.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()

PySide2.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.

PySide2.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.