Game not responding on different computer with Intel graphics

Question

I have a game that uses SDL2 and OpenGL 3.3 with Visual Studio. It runs fine on the computer that built it, but it did not work on other Windows computers.

Initially, it would complain about missing DLLs from the VC++ runtime. I solved the first issue by statically linking the runtime libraries into the EXE.

However, the second issue was that the program freezes right before it could call OpenGL functions to generate vertex buffer and vertex array objects. Of note, not all of the OpenGL functions freeze the program, since glClear appears to work.

I then noticed that some computers with dedicated graphics cards and up-to-date drivers can successfully play the game, but the computers with integrated graphics cards such as Intel HD 4000 still froze up in the same place. This is puzzling, since the specifications for Intel HD 4000 state that OpenGL 3.3 should be supported.

The computers I have tested with all managed to generate an OpenGL context with SDL2 and load OpenGL functions with GL3W without any errors, though some of the unsuccessful ones had a zero-bit depth buffer.

Does anyone know what might be causing the issue?

Answer 1

After I gave my rendering code another look, I noticed that I was using glCreateVertexArrays and glCreateBuffers instead of glGenVertexArrays and glGenVertexBuffers.

While they do the same thing, glCreateVertexArrays and glCreateBuffers were introduced in OpenGL 4.5, which is why my program choked on hardware that did not support that version of OpenGL. Since I am targeting OpenGL 3.3, that is a problem.

After replacing those two function calls, my code runs on the Intel graphics cards just fine.