Hardware acceleration is not enabled. Reinstall your GPU drivers (NVIDIA, AMD, or Intel).
Understanding wglgears.exe: The Windows Port of OpenGL’s Iconic Benchmark wglgears.exe
He tried to close the window. The "X" button vanished. He tried the Task Manager, but wglgears.exe wasn't listed. He pulled the power cord from the wall. The screen stayed on. Hardware acceleration is not enabled
As the demo came to an end, Emily turned to her grandfather with a newfound sense of appreciation. "Thanks for sharing this with me," she said, her eyes still shining with excitement. "I never knew how much history was hidden in this old file." The "X" button vanished
If you are an engineer looking to audit or build the application from source:
Resizing the window or running multiple instances allows you to see how your GPU scales under light loads. Is wglgears.exe Safe?