Re: [GD-DEVEL] gdImageCopyResampled issue under XP

The attachement is too big so you'll find the images at the following urls :

http://floyanami.free.fr/images/CopyResampled_debug.png
http://floyanami.free.fr/images/CopyResampled_release.png

Florent

----- Original Message ----- 
From: "Pierre" <[email protected]>
To: "Florent Lejeune" <[email protected]>; <[email protected]>
Sent: Friday, June 29, 2007 6:26 PM
Subject: Re: [GD-DEVEL] gdImageCopyResampled issue under XP


> Hello,
>
> On 6/29/07, Florent Lejeune <[email protected]> wrote:
>> Hi,
>>
>> I'm using gd 2.0.34 with VS 2005 under Windows XP.
>> I have a problem with the gdImageCopyResampled function which doesn't 
>> produce the same result when my project is compiled in debug and when 
>> it's compiled in release : in debug the final png image is fine but in 
>> release some colors are degraded (see the 2 images attached).
>
> Can you upload them somewhere or use our issues tracker to post them
> (within a new issue)?
>
>>
>> Here is my test code :
>>
>> void bugcopyresample()
>> {
>>   FILE *outpng,*inpng;
>>   int white;
>>   gdImagePtr dst,src;
>>   // build dst image
>>   dst = gdImageCreateTrueColor(100,100);
>>   white = gdImageColorAllocate(dst,255,255,255);
>>   gdImageAlphaBlending(dst,0);
>>   gdImageFill(dst, 0, 0, white);
>>   // open src image
>>   inpng = fopen("testimage.png", "rb");
>>   if (inpng!=NULL)
>>   {
>>     src=gdImageCreateFromPng(inpng);
>>     fclose(inpng);
>>   }
>>   if (src!=NULL)
>>   {
>> 
>> gdImageCopyResampled(dst,src,0,0,0,0,dst->sx,dst->sy,src->sx,src->sy);
>>     // SAVE TO PNG
>>     outpng = fopen("bugCopyResampled.png","wb");
>>     if (outpng!=NULL)
>>     {
>>       gdImagePng(dst,outpng);
>>       fclose(outpng);
>>     }
>>     gdImageDestroy(src);
>>   }
>>   gdImageDestroy(dst);
>> }
>>
>> Is there a solution or will there be a patch ?
>
> Surely, I receiven a couple of suspect reports this week. It is time
> to take a deep look at this function.
>
> --Pierre
>
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