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Bug 1162 - Error calling SDL_RenderReadPixels() with format=0
Summary: Error calling SDL_RenderReadPixels() with format=0
Status: RESOLVED FIXED
Alias: None
Product: SDL
Classification: Unclassified
Component: video (show other bugs)
Version: HG 2.0
Hardware: x86_64 Linux
: P2 normal
Assignee: Sam Lantinga
QA Contact: Sam Lantinga
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2011-03-07 08:17 UTC by Marco Schulze
Modified: 2011-03-10 01:05 UTC (History)
0 users

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Description Marco Schulze 2011-03-07 08:17:16 UTC 
Contrary to the documentation, SDL_RenderReadPixels() fails if called with format=0. Tested with the OpenGL backend.
Comment 1 Sam Lantinga 2011-03-07 10:55:05 UTC 
That's because you pass in a void* pointer and a pitch value, but the API doesn't know what pixel format you're expecting.

What is your expected behavior?
Comment 2 Sam Lantinga 2011-03-07 10:56:00 UTC 
Oh, of course, 0 uses the format of the rendering target.

Is there actually any way to tell what that is?
Comment 3 Sam Lantinga 2011-03-07 10:58:57 UTC 
Sorry, it's Monday.

/reboot

Okay... I see the problem.  Thanks!
Comment 4 Sam Lantinga 2011-03-10 01:05:55 UTC 
This is fixed, thanks!
http://hg.libsdl.org/SDL/rev/46bd121b04a2

Please let me know if you have any troubles.