3D Game Programming - Episode 4.5 - How Rendering Works

Key Takeaways

what is up guys my name is jonah and welcome to episode 4.5 of 3d java game programming okay um yeah this is sort of like a bonus sort of episode where i um really wanted to sort of focus on one thing it's going to be a really short video and that is the way that this works because um i don't feel that i explained it well and you know i've got messages saying um could you explain it better so um i think that the best way to explain this is to actually demonstrate so um this is sort of what we had and um the way that it renders the way that it draws how does all this code work okay um the best way i think to explain it is to simply add you know system.out.printline into this for loop um in the render class print line and we're just going to print x um plus x plus and i'll explain this in a minute why plus y okay so what what it's doing is it's printing like a string of text says x and it's printing the x variable uh so what you can see is if i go into the console and i run this save it okay let's exit out of this and let's sort of and enlarge this console and take a look at this um and we'll also take a look at paint.net because paint.net is fast becoming my favorite way to explain pixels to people with this little grid thing the grid is awesome okay so we can say that you know at y when y is 108 it's creating all these x values so say that this um say that this pixel is number 108 down yeah for each 108 it's creating the entire range of all these pixels across x and it will stop at 255. well it's technically 256. if we saw if we oh we don't have that but you can see that it starts at 0.1 because that's the way the java works so yeah it's printing 256 because 256 is the amount that we've specified in our screen class so 256 basically fills up this y value because it's render.height so yeah that's that's how it works i hope that this will sort of help you explain um more things and you know when y when the y pixel number is 109 it will render all of the x pixels across so it's effectively rendering um in lines like this you know it'll render this one first then it'll go on to this one then it will render this one and so on and so forth so it's running it's rendering that way across the screen um hopefully those sound effects helps you guys out okay so that's a really quick episode um don't worry episode five where we actually move on to animating stuff animating the pixels and i'll actually actually fix a lot of bugs as well because i've already recorded episode five um that will that will be up today that'll be that that will be up a few hours after this video so don't worry you're still getting a full episode today i just really wanted to put this in okay see you guys later bye you