Hello.
My name is David Jenkins and I've been a professional engineer for over a decade now. I'd generally personalize my proposals heavily based on the project's description, but your write-up is rather vague.
To hopefully encapsulate the project requirements that I do understand - I started programming in C & C++ nearly 14 years ago, and have a very firm grasp of OpenGL's available APIs for those languages. I also have a clear understanding of how to correctly work with most GL systems.
If you could answer a few questions for me, that would help me better understand the project, and help me to edit my bid accordingly:
1.) What exactly are you looking for in the sample code - what should it render/do?
2.) What are the target platforms for this code? Windows, MacOS, Linux? Perhaps a smartphone OS like Android or iOS?
3.) What is your preferred deadline for the project? And, are there any hard deadlines that MUST be met?
Thank you for the additional details and I look forward to speaking with you shortly!