Lower the precision further, we're still doing it at higher precision than
8bit but since GIMP itself is still only dealing with 8bit data we can permit
these shortcuts for adding and removing gamma without affecting the fidelity
of the produced results.
GIMP was doing evil hacks lying to GEGL about it's pixels being in a linear
color space when they are not. This causes incorrect rendering, makes gaussian
blur misbehave etc.
The legacy projection modes should be implemented using the same 2.2 gamma
formats that are correct to specify for sRGB data. (for proper color
management in higher bitdepths; icc backend babl formats should be used.)
For the old image modes correct babl formats are:
R'G'B'A u8 - 8 bit RGB with 2.2 gamma (sRGB) with linear alpha component
R'G'B' u8 - 8 bit RGB with 2.2 gamma (sRGB)
Y'A u8 - 8 bit Grayscale with 2.2 gamma with linear alpha component
Y' u8 - 8 bit Grayscale with 2.2 gamma
Y u8 - 8 bit linear data, used for masks/channels
A u8 - 8 bit linear alpha
-----------------------------------------------
RGBA float - 32bit floating point linear light RGB
RaGaBaA float - 32bit floating point linear light RGB, premultiplied alpha
to be used for processing that needs to scale by the alpha,
(blurs, resampling etc)
R'G'B'A float - 32bit floating point sRGB with gamma, to be used where
the result depends on being closer to perceptual when
processing, can be used a cheaper alternative to CIE Lab
based modes.
-----------------------------------------------
The legacy layer modes should use the formats with gamma 2.2 only for loading
and rendering legacy XCF files correctly, in the brave new world compositing
should most likely be done in linear light with "RGBA float" and even better
"RaGaBaA float" like GEGL does for porter duff and other compositing modes.
The ability to chose the legacy layer modes should probably be hidden from the
user unless an old .xcf has been opened.
as long as it has the same number of bytes. Add
gimp_tile_manager_create_buffer_with_format() for that purpose,
register a format that contains's only a u8 alpha byte, and use that
to extract alpha from drawables.
2009-01-17 Michael Natterer <mitch@gimp.org>
* all files with a GPL header and all COPYING files:
Change licence to GPLv3 (and to LGPLv3 for libgimp).
Cleaned up some copyright headers and regenerated the parsers in
the ImageMap plugin.
svn path=/trunk/; revision=27913
2008-11-16 Sven Neumann <sven@gimp.org>
* app/app.c
* app/gegl/gimp-gegl.[ch] (gimp_gegl_init): set the GEGL cache
size
as large as the GIMP tile-cache.
svn path=/trunk/; revision=27669
* app/gegl/gimpoperationlayermode.[ch]: Rename to
* app/gegl/gimpoperationpointlayermode.[ch]: so that we can later
create a common GimpOperationLayerMode class/interface for
non-point layer modes like GimpOperationDissolveLayerMode.
* app/gegl/Makefile.am
* app/gegl/gimp-gegl.c
* app/gegl/gegl-types.h: Adjust accordingly.
svn path=/trunk/; revision=27401
GimpOperationLayerMode instantiable and add a GimpLayerModeEffects
property to it that we check in ::process() to blend pixels
together.
* app/gegl/gimpoperationlayermode.[ch]: Do the change described
above. Currently only Normal and Addition are implemented. Normal
so that we don't need a special case for the gegl:normal op. Also,
the Dissolve layer mode is not a point op and needs to be
implemented elsewhere.
* app/gegl/gimpoperation*mode.c: Removed.
* app/gegl/gimp-gegl-utils.[ch]: Removed
gimp_layer_mode_to_gegl_operation().
* app/core/gimplayer.c
* app/gegl/Makefile.am
* app/gegl/gimp-gegl.c: Adapt.
svn path=/trunk/; revision=27400
2008-10-11 Michael Natterer <mitch@gimp.org>
* app/gegl/gimpoperationpointcomposer.[ch]: add an empty abstract
GeglOperationPointComposer subclass which can be used to hook in
common debug or test or whatever code for below layer modes.
* app/gegl/gimpoperation*mode.[ch]: add empty stubs of layer mode
operations which do nothing but copying input to output.
* app/gegl/Makefile.am
* app/gegl/gegl-types.h: add them here and reordered things a bit.
* app/gegl/gimp-gegl.c (gimp_gegl_init): register the new
operations.
* app/gegl/gimp-gegl-utils.c (gimp_layer_mode_to_gegl_operation):
return the new operations.
svn path=/trunk/; revision=27239
2008-06-04 Sven Neumann <sven@gimp.org>
* INSTALL: updated GEGL version and also mention babl.
* app/gegl/gimp-gegl.c (gimp_gegl_init): configure the GEGL tile
size to match the GIMP tile size.
svn path=/trunk/; revision=25887
2008-04-25 Sven Neumann <sven@gimp.org>
* app/app.c
* app/gegl/gimp-gegl.c: reverted change from 2008-01-31. Use the
GEGL option group again now that GEGL provides some commmand-line
options.
svn path=/trunk/; revision=25524
2008-01-31 Sven Neumann <sven@gimp.org>
Delay GEGL initialisation until after the command-line parsing
so
that we can detect an already running GIMP instance and delegate
to that without going through the GEGL and babl initialisation.
* app/app.c (app_libs_init): don't add the GEGL options group
here. GEGL doesn't add any command-line options and it doesn't
look as if it would do that anytime soon.
* app/gegl/gimp-gegl.c (gimp_gegl_init): initialize GEGL here.
svn path=/trunk/; revision=24762
2008-01-23 Michael Natterer <mitch@gimp.org>
* app/gegl/Makefile.am
* app/gegl/gegl-types.h
* app/gegl/gimpcurvesconfig.[ch]
* app/gegl/gimpoperationcurves.[ch]: add curves operation and its
config object. Hack around badly to be able to use GimpCurve from
app/core.
* app/gegl/gimp-gegl.c: register the curves operation.
* app/tools/gimpcurvestool.[ch]: added get_operation() implemenetation
and use the new config object instead of keeping around 5 curves.
svn path=/trunk/; revision=24683
2008-01-16 Michael Natterer <mitch@gimp.org>
Fix gegl types and includes so we can include operations from
app/gegl in other gimp files (needed soon):
* app/gegl/gegl/gegl-types.h: not copied from gegl any longer.
Now contains only two typedefs needed by the copied operation
headers.
* app/gegl/gegl-types.h: include above types file.
* app/gegl/gimp-gegl.c
* app/gegl/gimpoperationcolorbalance.c
* app/gegl/gimpoperationcolorize.c
* app/gegl/gimpoperationdesaturate.c
* app/gegl/gimpoperationhuesaturation.c
* app/gegl/gimpoperationlevels.c
* app/gegl/gimpoperationposterize.c
* app/gegl/gimpoperationthreshold.c
* app/gegl/gimpoperationtilesink.c
* app/gegl/gimpoperationtilesource.c: include only <gegl.h> and
"gegl-types.h" from this directory, which is much more gimpish
now. Include "gegl/buffer/gegl-buffer.h" in the source and sink
operations.
* app/tools/gimpimagemaptool.h: warn about inclusion of <gegl.h>
only if it hasn't been included before, so it only warns in the
files where we still have to address this issue.
svn path=/trunk/; revision=24625
2008-01-14 Michael Natterer <mitch@gimp.org>
* app/gegl/Makefile.am
* app/gegl/gegl-types.h
* app/gegl/gimpoperationhuesaturation.[ch]: new operation.
* app/gegl/gimp-gegl.c: register it.
* app/tools/gimphuesaturationtool.c: use it.
svn path=/trunk/; revision=24608
2008-01-10 Michael Natterer <mitch@gimp.org>
* app/gegl/Makefile.am
* app/gegl/gegl-types.h
* app/gegl/gimpoperationcolorbalance.[ch]: new operator.
* app/gegl/gimp-gegl.c: register it.
* app/tools/gimpcolorbalancetool.c: use it.
svn path=/trunk/; revision=24587
2008-01-04 Michael Natterer <mitch@gimp.org>
* app/gegl/Makefile.am
* app/gegl/gegl-types.h
* app/gegl/gimpoperationcolorize.[ch]
* app/gegl/gimpoperationposterize.[ch]: new operators which still
use a lot of gimp stuff they shouldn't use, but at least the
infrastructure for improving them is there now.
* app/gegl/gimp-gegl.c: register them.
* app/tools/gimpcolorizetool.c
* app/tools/gimpposterizetool.c: use them.
svn path=/trunk/; revision=24528
2008-01-03 Michael Natterer <mitch@gimp.org>
* app/gegl/Makefile.am
* app/gegl/gegl-types.h
* app/gegl/gimpoperationthreshold.[ch]: gimpish threshold operator
which has "low" and "high" properties.
* app/gegl/gimp-gegl.c: register it.
* app/gegl/gimpoperationdesaturate.[ch]: fix copyright.
* app/tools/gimpthresholdtool.[ch]: use the new operator.
svn path=/trunk/; revision=24515
2008-01-03 Michael Natterer <mitch@gimp.org>
Some more gegl code to have some playground for experimenting.
* app/gegl/Makefile.am
* app/gegl/gegl-types.h
* app/gegl/gimpoperationdesaturate.[ch]: ported desaturate.
* app/gegl/gimp-gegl.c: register it.
* app/gegl/gimpoperationtilesink.h: fix name of parent class member.
* app/core/gimpdrawable-desaturate.c: use the new operator, but
keep the old code around (prepared for runtime switching).
* app/core/gimpdrawable-invert.c: prepare for runtime switching
here too.
svn path=/trunk/; revision=24514
