Re: [SDL2] Texture with alpha and mouse cursor over it

I need highlight the object and handle click events. Images like buttons. But they not have rectangle forms.


Jonny D wrote:
> If the use is rare, like on user input, then the performance penalty of reading the pixels directly from the texture might be acceptable.
> 
> 
> It also depends on what you want to use this info for.  In some cases, you can do everything you need to do in a shader.
> 
> 
> 
> Jonny D
> 
> 
> 
> On Thu, Aug 25, 2016 at 12:43 PM, Rang <[email protected] ([email protected])> wrote:
> 
> >  	 	In this moment i use same method as you describe, but memory we use x2 (RAM + GPU). [Image: http://forums.libsdl.org/images/smiles/icon_sad.gif ]
> > 
> > I thought use SDL_Rect (or other structure) for saving borders\points of borders for visible part, but this is more complicated code.
> > I already have images, and need dynamicly creating this zones.
> > 	
> > 
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> > 
> > 
>

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