How To Make A HD Minecraft Texture Pack (32x, 64x, 128x, 256x, 512x)
If you want to make a minecraft texture pack, but the default 16x textures aren't enough and you want to make an HD texture pack at 32x, 64, 128, 256x or even 512x, then this article will show you how.
The good news is that creating HD texture packs is easy. First of all you need to grab the terrain.png and items.png, and both of these can be found in your minecraft.jar. You'll also need an image editing program that is capable of handling transparency in images. Paint won't do the job, but Photoshop or Sumo Paint or one of the many opensource graphics editing programs probably will.
How To Patch Your Minecraft Install To HD
Remember, if you want to test / play with your new HD texture pack, you'll need to patch minecraft with Xau's HD Patcher. If you don't do this, you'll have many problems when you try to test your new HD texture pack.
How to Enlarge The Terrain.png
When you open the terrain.png, you'll see that it is a grid with all the textures for the various blocks laid out in it. The default size for each of the squares in the default terrain.png and items.png is 16 pixels by 16 pixels. Creating an HD texture pack is as simple as enlarging the entire image so you get the resolution you desire. If you want to go from 16 pixels to 32 pixels, double the size of the image. If you want to go from 16 pixels to 64 pixels, make it four times as large (and so on and so forth.) You'll also need to pay attention to the items.png and potentially armor and animal skins, if you're going all out on the HD textures.
How To Add Your New HD Textures
You'll discover when you enlarge the terrain.png that it didn't really want to be enlarged and is now going to put up much more of a fight in the editing process because everything looks blurry. It's not too late to go back to making a new default sized texture pack, but if you do want to press on in your HD quest, you must understand that now is the time for patience.
The easiest way I found to get new textures to the correct size is to create a new image at the right size. If you're making a 64x texture pack, create a new image sized 64 x 64. You can then work on each new texture individually before adding it to your texture pack.
How To Test Your Minecraft HD Texture Pack
You can test your new textures by saving your updated terrain.png and putting it in your minecraft.jar. This saves you actually assembling an entire new texture pack early on in the testing process. When you open minecraft, your tweaked terrain.png will be the default texture pack.