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AppGameKit Classic Chat / Add text and change background color on SetRenderToImage

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CodeTrasher
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Joined: 18th Jul 2012
Location: Tampere, Finland
Posted: 16th Jul 2016 21:22
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As the subject says, I want to create an image with text and different background color. I understand the basic idea of rendering to image instead of the screen but I'm a bit confused what drawing commands I can or I'm allowed to use. Do I need to manually call Swap(), Update() or Render() commands or can I even create text with SetRenderToImage command? If some one else has more experience on this regard, I'd be very happy if you shared your knowledge with me. Thank you.
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BatVink
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Joined: 4th Apr 2003
Location: Gods own County, UK
Posted: 17th Jul 2016 08:49
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With SetRenderToImage, you can draw anything you would normally do rendering to the screen.
Call it before you draw anything.
Then ClearScreen()
You can now drawSprite() etc.
When you have finished drawing, SetRenderToScreen()

You don't need to Swap(), Update() or Render()
For your text, you probably need to save it to a sprite so you can DrawSprite(). I haven't tried text on a Render Image, there may be a better way.
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Markus
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Joined: 10th Apr 2004
Location: Germany
Posted: 17th Jul 2016 09:13
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everything what not paint direct in this "buffer" will be painted with the call of Render() command. Render using lists orderd by depth value, like Sprites,GUI

Update() updates the input cycle or physics.

Swap() exchange the back/front buffer pointer and clears the "backbuffer" for next painting.

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CodeTrasher
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Joined: 18th Jul 2012
Location: Tampere, Finland
Posted: 18th Jul 2016 21:32
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Alright, thank you both for your help. I'll have to try and see further what approach suits my needs best.
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BatVink
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Posted: 19th Jul 2016 08:21
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Markus' approach is better
I have never used it this way, but in the future I will.
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