QOpenGLFunctions_4_5_Core static variables

[Pekoyo]

Having a
static QOpenGLFunctions_4_5_Core * GL;
struct Viewport : QOpenGLWindow, protected QOpenGLFunctions_4_5_Core {
Viewport() {
GL = this;
}
}

and maintaining a reference to

attempting to assign anything to a static GLuint fails / goes out of scope.
eg. creating a shader program or a VAO / VBO to a static variable the data is deleted instanly after being assigned.

The purpose is to have many classes that each render a different kind of primitive but managing context is confusing and each class instance should use the same shaderprogram. is there a way to maintain OpenGL variables inside static variables?

[jsulm]

@Pekoyo said in QOpenGLFunctions_4_5_Core static variables:

is there a way to maintain OpenGL variables inside static variables?

You should rather use a common base class for all these classes where you put that GLuint variable.

From your description it is also not clear how you're using that static variable.

[Pekoyo]

My other solution was not as ideal but putting the OpenGL variables inside an unordered_map in the QOpenGlWidget and using a static pointer to the viewport

[SGaist]

Hi,

You realize that using all this static stuff is a really good start to a pretty nightmarish maintenance and debugging experience ?