I have a small pyopengl piece of code that uses shaders. I get the following “info” log messages but have no idea what they mean and the documentation is poor — or I could not find it.
Anyone could clarify what those mean?
INFO [ MainThread::OpenGL.extensions] OpenGL Version: 3.3.0 NVIDIA 295.59
INFO [ MainThread::OpenGL.extensions] Chose alternate: glCreateShader from glCreateShader, glCreateShaderObjectARB
INFO [ MainThread::OpenGL.extensions] Chose alternate: glShaderSource from glShaderSource, glShaderSourceARB
INFO [ MainThread::OpenGL.extensions] Chose alternate: glCompileShader from glCompileShader, glCompileShaderARB
INFO [ MainThread::OpenGL.extensions] Chose alternate: glGetShaderiv from glGetShaderiv, glGetObjectParameterivARB
INFO [ MainThread::OpenGL.extensions] Chose alternate: glCreateProgram from glCreateProgram, glCreateProgramObjectARB
INFO [ MainThread::OpenGL.extensions] Chose alternate: glAttachShader from glAttachShader, glAttachObjectARB
INFO [ MainThread::OpenGL.extensions] Chose alternate: glLinkProgram from glLinkProgram, glLinkProgramARB
INFO [ MainThread::OpenGL.extensions] Chose alternate: glValidateProgram from glValidateProgram, glValidateProgramARB
INFO [ MainThread::OpenGL.extensions] Chose alternate: glGetProgramiv from glGetProgramiv, glGetObjectParameterivARB
INFO [ MainThread::OpenGL.extensions] Chose alternate: glDeleteShader from glDeleteShader, glDeleteObjectARB
INFO [ MainThread::OpenGL.extensions] Chose alternate: glUseProgram from glUseProgram, glUseProgramObjectARB
The import lines are:
from OpenGL.GL import *
from OpenGL.GLU import *
from OpenGL.GLUT import *
from OpenGL.GL.ARB.shader_objects import *
from OpenGL.GL.ARB.fragment_shader import *
from OpenGL.GL.ARB.vertex_shader import *
PyOpenGL can choose between the core GLSL versions of shader functions and their NVIDIA ARB equivalents if both are available. Your info log is telling you that your program chose the core versions when given a choice.