j riv questions

• What is gl_ModelViewMatrix and gl_ModelViewProjectionMatrix in modern OpenGL?
• How do we get Indices for glDrawElements()?
• What is Half vector in modern GLSL?
• How can you force recompilation of a single file in a Makefile?
• Is there a need to code a new 3D engine? [closed]
• Does GLSL utilize SLI? Does OpenCL? What is better, GLSL or OpenCL for multiple GPUs?
• git-gui reports it has 256 loose objects each time is run and suggests compression which goes fine. How to fix it?
• is VertexAttribPointer needed after each BindBuffer?
• Is it thread safe to call printf in threads that run simultaneously? [duplicate]
• What is a comma separated set of assignments?

j riv answers