On Thu, 11 Jun 2009 03:30:05 -0700, Ben Holm <benbe...@gmail.com> wrote:
> On 6/11/09, Luke Crook <l...@balooga.com> wrote: >> Can you attach the image? It will help with debugging. >> > > Here it is. I'm just prototyping ideas at this point, so it's not > too interesting. SDL does not support both per-pixel alpha and per-surface alpha blending. When both are specified then per-pixel alpha takes precedence. Your PNG image has a per-pixel alpha channel specified. To use per-surface alpha you will first need to strip away the per-pixel alpha channel. To do this you can create a new surface with :pixel-alpha NIL. Then blit the png to this new surface. For example; (setf png-image (sdl-image:load-image "base.png")) (setf image-new (sdl:create-surface (sdl:width png-image) (sdl:width png-image) :pixel-alpha nil :alpha 128)) (sdl:blit-surface png-image image-new) - Luke _______________________________________________ application-builder mailing list application-builder@lispniks.com http://www.lispniks.com/mailman/listinfo/application-builder
