{"author_name":"qualia","cat":"LD #22","comments":[{"author_name":"JohnBedlam","time":"December 18, 2011 11:49 am","epoch":1324226940,"text":"I had the exact same problem. It has to do with alpha channels being applied instead of blitted or something.","spam":"N"}],"epoch":1324225740,"likes":0,"metadata":{"p_key":"60818","p_author":"qualia","p_authorkey":"505362","p_urlkey":"96571","p_title":"Uh-oh","p_cat":"LD #22","p_event":"LD22","p_time":"1324225740","p_likes":"0","p_comments":"1","p_status":"UPD5","us_key":"505362","us_name":"qualia","us_username":"qualia","event_start":"1323993600","event_key":"8","event_name":"LD22"},"text":"

Hit a massive snag with sprite-loading. We’re using transparent PNG spritesheets. For, say, the font, the SDL_Surface* _font is loaded, and displays as transparent with no problems.<\/p>\n

When blitting parts of _font onto an empty SDL surface, there is no transparency:
\n SDL_Surface *surface = SDL_CreateRGBSurface(SDL_SWSURFACE | SDL_SRCALPHA, width, height, 32,0xff000000,0x00ff0000,0x0000ff00,0);<\/p>\n

SDL_BlitSurface(_font, &srcRect, surface, &destRect);<\/code>
\n results in:
\n \"\"<\/a><\/p>\n

I’ve tried every combination of masks imaginable, including _font->format->Rmask, etc., to no effect.<\/p>\n

If anyone has any idea what I’m doing wrong, I’d love to know, even though we’re very unlikely to make the jam deadline at this point.<\/p>","time":"December 18th, 2011 11:29 am","title":"Uh-oh"}