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Diton9000

dissolve effect in SDL

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I am trying to do a dissolve effect between two still screens in SDL (Myst clone). How should I do this? Also, is this effect even desirable?

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I just thought of a way, but it would be annoying to program.

Draw the first image, update the screen.

Draw the second image, update every other pixel using SDL_UpdateRects
Update the rest of the screen.

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