I'm doing a project in which i will be creating a 3D engine to create a small game. I will have lots of objects that will be shaded and possible texture mapped. I will not be using any API's, i will be programming all the matrix transformations and code to render and display the moving 3D scene.
My question is that i understand that without API's taking advantage of hardware acceleration, the game could be very sluggish due to the computational expense of everything that needs to be calculated to draw each frame. Will a smooth running game be feasable with no use of API's (i very much hope it will be!), and if so, will this be possible in Java, or will i have to use C or C++, or does it matter as long as i have optomised my code well?