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Bug 1408

Summary: RGBA->RGBA blit error
Product: SDL Reporter: Dimitris Zenios <dimitris.zenios>
Component: videoAssignee: Sam Lantinga <slouken>
Status: RESOLVED INVALID QA Contact: Sam Lantinga <slouken>
Severity: blocker    
Priority: P2 CC: gabomdq
Version: HG 2.0   
Hardware: x86_64   
OS: Linux   
Attachments: Source code and image

Description Dimitris Zenios 2012-02-01 08:48:22 UTC 
Created attachment 811 [details]
Source code and image

It seems there is a bug when blitting RGBA->RGBA.The final surface is
always blank.

Attached is the test application and the image used
Comment 1 Gabriel Jacobo 2012-02-01 18:27:32 UTC 
I think you are missing the alpha information on the "final_surface" surface...or should I say, the alpha channel is set entirely to zero, so the image doesn't show up.


Try adding:
SDL_FillRect(final_surface, NULL, SDL_MapRGBA(final_surface->format, 0, 0,0,255));

after 

/*Blit the surface to another surface o check for RGBA->RGBA*/
final_surface = surface_new(temp->w,temp->h);

And you'll see the test works fine.
Comment 2 Gabriel Jacobo 2012-02-06 07:10:39 UTC 
Closing as discussed with Dimitris