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3d_rendering.md
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@ -98,7 +98,7 @@ TODO: VoxelQuest has some innovative voxel rendering, check it out (https://www.
## 3D Rendering Basics For Nubs
If you're a complete noob and are asking what the essence of 3D is or just how to render simple 3Dish pictures for your game without needing a PhD, here's the very basics. Yes, you can use some 3D engine such as [Godot](godot.md) that has all the 3D rendering preprogrammed, but you you'll surrender to [bloat](bloat.md), you won't really know what's going on and your ability to tinker with the rendering or optimizing it will be basically zero... AND you'll miss on all the [fun](fun.md) :) So here we just foreshadow some concepts you should start with if you want to program your own 3D rendering.
If you're a complete noob and are asking what the essence of 3D is or just how to render simple 3Dish pictures for your game without needing a [PhD](phd.md), here's the very basics. Yes, you can use some 3D engine such as [Godot](godot.md) that has all the 3D rendering preprogrammed, but you you'll surrender to [bloat](bloat.md), you won't really know what's going on and your ability to tinker with the rendering or optimizing it will be basically zero... AND you'll miss on all the [fun](fun.md) :) So here we just foreshadow some concepts you should start with if you want to program your own 3D rendering.
The absolute basic thing in 3D is probably **[perspective](perspective.md)**, or the concept which says that "things further away look smaller". This is basically the number one thing you need to know and with which you can make simple 3D pictures, even though there are many more effects and concepts that "make pictures look 3D" and which you can potentially study later (lighting, shadows, [focus and blur](depth_of_field.md), [stereoscopy](stereo.md), [parallax](parallax.md), visibility/obstruction etc.). { It's probably possible to make something akin "3D" even without perspective, just with [orthographic](ortho.md) projection, but that's just getting to details now. Let's just suppose we need perspective. ~drummyfish }
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press key to animate
```
**PRO TIP**: It also help if you learn a bit about [photography](photo.md) because 3D usually tries to simulate [cameras](camera.md) and 3D programmers adopt many terms and concepts from photography. At least learn the very basics such as [focal length](focal_length.md), [pinhole camera](pinhole_camera.md), the "exposure triangle" (shutter speed, [aperture](aperture.md), [ISO](iso.md)) etc. You should know how focal length is related to [FOV](fov.md), what the "f number" means, how to use exposure settings to increase or decrease things like [motion blur](motion_blur.md) and [depth of field](depth_of_field.md), what [HDR](hdr.md) means etc.
## Mainstream Realtime 3D
You may have come here just to learn about the typical realtime 3D rendering used in today's [games](game.md) because aside from research and niche areas this kind of 3D is what we normally deal with in practice. This is what this section is about.