Hello! I'm creating a game and I don't use OpenGl , DirectX or any other engine. I'm drawing the images on canvas. I want to know what you think about that kind of game development? (the graphic can be realy nice..) Have a nice day David

what do you mean by drawing the images on canvas? How do you do it? I suppose you'll still have to use the sprite concept anyway!!

I'm delphi programmer!
I'm not using image and image and another image. I'm using one main image and one tbitmap image. I open one image in tbitamp and edit it (with codes) and then draw that bitamp on main canvas.
Is here anyone that use DElphiGl - Opengl for delphi or DelphiX..

another thing is can we program a 2D game using OpenGL, i.e can we use normal sprites in OpenGL as we do in DX and how?

If you use GDI for games (which is, I suspect what Delphi's Canvas uses), you will discover that it has very poor performance. This is because it has to make a lot of unnecessary function calls to do stuff like SelectObject().

Using a direct rendering library like Allegro will give you a relatively high performance software rendering system which can render to off-screen buffers then blit in.

Using DX or OpenGL will give you the ability to use hardware acceleration, which is generally extremely beneficial to performance (although is fairly complex).

You CAN do 2d graphics with Direct3d or OpenGL. But the video card still considers them 3d really - they just happen to be aligned with the screen and use a non-perspective projection. Generally any feature can be turned on or off as required.

Drawing sprites with OpenGL generally involves EITHER drawing quads with a (possibly transparent) texture, or using (one of the) point sprite extensions, which might help slightly if you have a huge number of them (less geometry hits the pipeline apparently)

Mark