src/shader/program.jl - early call to glUseProgram causes GL_INVALID_OPERATION

[karna48]

I was trying to use NVIDIA Nsight Gaphics to debug my appliaction and I discovered that function Program calls glUseProgram right after glCreateProrgam which sets the error on GL_INVALID_OPERATION.

https://registry.khronos.org/OpenGL-Refpages/gl4/html/glUseProgram.xhtml
GL_INVALID_OPERATION is generated if program could not be made part of current state.

I think ti means glUseProgram can be only done with a fully linked program.