Hi,
Daniel Egger <[EMAIL PROTECTED]> writes:
> Am 04 Sep 2001 15:51:34 +0200 schrieb Sven Neumann:
>
> > you certainly can process several 8 bit channels in one operation without
> > special support from the processor and I would like to contribute such
> > code to The GIMP
>
> Uii, now I'm
Sven Neumann <[EMAIL PROTECTED]> wrote:
> __u32 __rb = (((color.r)<<16) | (color.b));
> __u32 __g = ((color.g)<<8);
>
> switch (a) {\
> case 0xff: *(d) = (0xff00 | __rb | __g); \
> case 0: break; \
> default: {\
> __u32 pixel = *(d);\
> __u16 s = (a)+
Am 05 Sep 2001 13:49:17 +0200 schrieb Sven Neumann:
> you need to do some masking and shifting. Well, you asked for it, here's
> the code we use in DirectFB to blend 'color' with opacity 'a' to destination
> pixel 'd' (RGB32). This code handles the red and blue channels in one
> multiplication. T
The GIMP currently does something a bit peculiar - it calls
gdk_get_use_xshm() and then passes the values it gets from this
to plugins, which call gdk_set_use_xshm().
I suppose the reasoning here is to propagate the command line
--no-xshm to each plugin. If GTK+ is autodetecting the value of
gd
Hi Owen,
Owen Taylor <[EMAIL PROTECTED]> writes:
> The GIMP currently does something a bit peculiar - it calls
> gdk_get_use_xshm() and then passes the values it gets from this
> to plugins, which call gdk_set_use_xshm().
>
> I suppose the reasoning here is to propagate the command line
> --no
Hi,
"Mattias Engdegård" <[EMAIL PROTECTED]> writes:
> I don't think they are that bad --- the readability of the above code
> merely suffers from a pollution of backslashes and underscores.
I took this code out of a macro and forgot to remove the backslashes.
Also we'd use different types sinc
Hi,
Daniel Egger <[EMAIL PROTECTED]> writes:
> Okay, so you work on 2 pixels concurrently by using corresping masks.
read the code (and my mail) again. I'm not doing operations on 2 pixels.
The code is combining the multiplications done on 2 channels of the
same pixel into one. Also it is also
Am 05 Sep 2001 21:34:21 +0200 schrieb Sven Neumann:
> > Okay, so you work on 2 pixels concurrently by using corresping masks.
> read the code (and my mail) again. I'm not doing operations on 2 pixels.
> The code is combining the multiplications done on 2 channels of the
> same pixel into one.
Hi,
Daniel Egger <[EMAIL PROTECTED]> writes:
> Of course I meant channels instead pixels... However for simple
> mainpulations the shifting and masking is much more work than simply
> operating on one channel at once, especially since those simple
> operations have a much higher chance to be sch
"Rebecca J. Walter" <[EMAIL PROTECTED]> writes:
> it might be useful if the color to alpha filter could a) interact with
That reminds me: I'd like to use the color to alpha filter for
chroma-keying. That is, stand the subject in front of a blue screen
and use color-to-alpha to remove all the b
10 matches
Mail list logo
