Using per-pixel and per-sprite alpha

SDL Development
1

For various reasons, I’d like to use per-sprite and per-pixel alphas.
(Surfaces have transparency not doable via colorkey, and I’d like to be
able to smoothly fade them in / out.) This is apparently not possible with
SDL 1.2. Has this been changed in SDL 2.0?

2

Yeah, you can use SDL_SetSurfaceAlphaMod() and SDL_SetTextureAlphaMod() to
modulate the alpha of a sprite in addition to its per-pixel alpha values.

Jonny DOn Thu, May 2, 2013 at 11:27 AM, Mark Tilford wrote:

For various reasons, I’d like to use per-sprite and per-pixel alphas.
(Surfaces have transparency not doable via colorkey, and I’d like to be
able to smoothly fade them in / out.) This is apparently not possible with
SDL 1.2. Has this been changed in SDL 2.0?

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