New answers tagged png
I think what Scott says in his comment is indeed what's happening. A guess... the alpha channel and the image are being anti-aliased differently. The green is not masked by the alpha channel, but rather aligns with it. When you scale, the alignment is thrown off. Here's how I fixed it. 1) Before loading the mask from the alpha channel, select the ...
Photoshops your best bet, although it doesn't like it if you use Save for Web on humongous images, you can just do a straight save if you want to keep your alpha channel. You don't say what the sprites are being used for but most game development API's support targeting one colour (say 255,255,0) as an alpha channel.
Adobe's Photoshop supports something like 300,000 pixel canvas's. It has a "Save for Web" feature that allows you to save a PNG24 file (which supports your alpha transparency). It too has all the functions you are looking for.
There is easier way - select the white background, invert it, define brush preset, create new file based transparent, grayscale - and this is. Select the brush, which is the last in the list and click once with black fourground swatch. Voila! Than you can save as web - png.
If you want a precise 256x256 pixel raster file containing a 1 pixel checkerboard pattern, you should definitely use a raster program (or program the exact output you want from a programing language). For example, if you use GIMP (which, as Inkscape is Free both as in Beer and as in Speech), you can simply create a new 256x256 pixel image, and select the ...
Top 50 recent answers are included