OpenGL - 3D rendering overview

Рет қаралды 24,142

Brian Will

Күн бұрын

Part of a series covering OpenGL. (revision of an earlier video: some restructuring and narration fixes)

Пікірлер: 18

@freaper2048 Жыл бұрын

I already know OpenGL, doing this tutorial because I just love your voice.

@JannisAdmek 4 жыл бұрын

I newly discovered your content and oh boy, you have some quality videos right there, THANK YOU

@cmdlp4178 4 жыл бұрын

I used the view matrix to check if something cannot be seen. You multiply the coordinate in world space with the view matrix. If the z-coordinate is negative, the coordinate lies behind the camera and the object does not need to be rendered. (A part of the object might be in front of the camera, so instead check for each corner coordinate of the bounding box of the object. And render only when all coordinates are behind the camera)

@andreyprotsenko9855 4 жыл бұрын

Man, you're awesome! Thank you!

@Scarabola 3 жыл бұрын

Great voice, but things would be a lot clearer if there were more pictures to go along with the concepts you're talking about.

@TheUltimateLizard 4 жыл бұрын

Very nice tutorials

@ocrap7 4 жыл бұрын

How would transforming the world for the camera work for a multiplayer game?

@briantwill 4 жыл бұрын

Not sure I understand the question. Are you concerned that transforming objects for different cameras of different players would cause a conflict? First, modifying data on client doesn't change anything on server. Secondly, the local-to-world and camera transforms are applied to every object every frame to produce the vertices we want to render relative to the camera, but the transforms and the original mesh vertices remain unmodified: effectively, we're producing a copy of all the vertices every frame to render, and those copies are discarded after the frame is rendered.