get_arg_float
Description:
Gets the value of the uniform idx
in the args
block.
Note:
GTK's new Vulkan-focused rendering does not support this feature. Use [GtkGLArea](../gtk4/class.GLArea.html) for OpenGL rendering.
The uniform must be of float type.
Parameters:
this |
a `GskGLShader` |
args |
uniform arguments |
idx |
index of the uniform |
Returns:
The value |