Gallery items

01 spots nothing

Sat, 08 Aug 2015 15:12:47 +0000

1. The first step is to build a skeleton driver. All it does is detect the GPU; it renders nothing.

02 spots justclear

Sat, 08 Aug 2015 15:12:49 +0000

2. Next, it's time to render something. The easiest render operation to start with is clearing the screen/window...

03 gears2 flat

Sat, 08 Aug 2015 15:12:51 +0000

3. Okay, it's time to render some 3D geometry. We're rendering it in white to keep things simple.

04 gears2 gouraud

Sat, 08 Aug 2015 15:13:03 +0000

4. Now, let's add some colour. The gear looks weird because the z-buffer isn't operational (that'll come later).

04 spots gouraud

Sat, 08 Aug 2015 15:13:12 +0000

4. At least the spots demo looks right now that colour has been added...

05a gears basictex

Sat, 08 Aug 2015 15:13:20 +0000

5. Implemented both z buffering and basic texturing. Now the gears demo finally looks 3D, even if the colours are wrong.

05b openarena basictex

Sat, 08 Aug 2015 15:13:25 +0000

5. OpenArena may look flat and ugly, but this is a proper 3D scene. We're making progress...

05c aquaria basictex

Sat, 08 Aug 2015 15:13:16 +0000

5. Aquaria still looks horrible, though. We need more features!

06 aquaria alphablend

Sat, 08 Aug 2015 15:13:27 +0000

6. That's better! Alpha blending makes all the difference.

06 openarena alphablend

Sat, 08 Aug 2015 15:13:34 +0000

6. OpenArena still looks rather flat, but alpha blending definitely helps.

07 openarena multitex

Sat, 08 Aug 2015 15:13:55 +0000

7. Up next: multitexturing support. Now OpenArena has the right atmosphere. Note the 4 fps in the top right corner. We'll improve that later...

08a openjk noalphatest

Sat, 08 Aug 2015 15:13:37 +0000

8. Square boxes galore in OpenJK. Clearly we still have work to do...

08b openjk alphatest

Sat, 08 Aug 2015 15:14:06 +0000

8. Alpha testing gets rid of those horrible squares. OpenJK looks a lot better now.

09a l26 reflections nostencil

Sat, 08 Aug 2015 15:14:12 +0000

9. The ball shouldn't be sticking out below the floor in this reflections demo...

09b l27 shadows nostencil

Sat, 08 Aug 2015 15:14:17 +0000

9. Likewise, we should see shadows on the walls, but the stencil buffer is missing.

09c l26 reflections stencil

Sat, 08 Aug 2015 15:14:15 +0000

9. So, we add stencil buffer support. Now the ball's reflection actually looks like a reflection...

09d l27 shadows stencil

Sat, 08 Aug 2015 15:14:20 +0000

9. Lo and behold; we have shadows!

10 openarena mipmapping aniso

Sat, 08 Aug 2015 15:14:22 +0000

10. Adding mipmapping and anisotropic filtering gets rid of aliasing artifacts. Did you notice that the fps have jumped from 4 to 32? An 8x boost thanks to optimizations. Not bad.

11 supertuxkart mipmapping aniso

Sat, 08 Aug 2015 15:14:26 +0000

11. That's it for now; time for the first public release. Enjoy!