PNG importing appears to be broken ( was Re: [squeak-dev] Who understand bilinear interpolation for reducing image size?)

Sun Dec 14 15:52:10 UTC 2014

Hi,
There is no difference to appearance with or without you change set.

There is also some difference between little and big endian'nes  on Windows
8.1. Trunk latest.

http://imgur.com/LzBXR0R

Karl

On Sun, Dec 14, 2014 at 2:19 PM, J. Vuletich (mail lists) <
juanlists at jvuletich.org> wrote:
>
>  So, does my fix work for you?
>
> Cheers,
> Juan Vuletich
>
> Quoting karl ramberg <karlramberg at gmail.com>:
>
> There seem to be is some issues in Trunk on conversion between 32 bit and
> 16 bit display depth. Changing display depth shows the issue.
> When I open the monkey1.png it has transparent pixels in 32 bit but opaque
> white in 16.
>
>
>
> Karl
>
> On Fri, Dec 12, 2014 at 8:09 PM, tim Rowledge <tim at rowledge.org> wrote:
>>
>>
>> On 12-12-2014, at 3:04 AM, Bert Freudenberg <bert at freudenbergs.de> wrote:
>>
>> > On 12.12.2014, at 04:47, tim Rowledge <tim at rowledge.org> wrote:
>> >>
>> >> monkey1.png where the background should be transparent but appears as
>> white -https://copy.com/lgAtv9rDlTGaGb9m
>> >> bananas1.png (similar but different in detail) -
>> https://copy.com/Vsj8lgqtyQmwIerA
>> >
>> > Both work fine if I simply drop them into a 4.5 image. I can
>> move/rotate/scale no problem. Shadow rendering is not nice, but that's a
>> problem of the shadow renderer, not the bitmap itself.
>>
>> Sigh. It looks ok when used that way because the process makes a
>> SketchMorph which draws by use of blending. Which is pretty much exactly
>> what I said, though possibly rather long-windedly. Scratch has to use
>> paint. Well, it could of course be changed to use blend but as previously
>> explained that has a risk of messing up old projects and costing too much
>> time on slower machines.
>>
>> OK, I give up.
>>
>> tim
>> --
>> tim Rowledge; tim at rowledge.org; http://www.rowledge.org/tim
>> How do I set my laser printer on stun?
>>
>>
>>
>>
>
>
>
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