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
* app/gegl/gimpoperationlayermode.c: Make layer modes work on
premultiplied data. This makes compositing 40% faster on my test
image with 10 interlaced Normal and Addition mode layers.
* app/gegl/gimpoperationadditionmode.c: Switch to the
premultiplied algorithm and remove the experimental ones. The new
Addition mode has two important differences over the legacy
Addition mode:
o Addition mode now really is commutative as the GIMP
documentation says (this wasn't previously the case).
o Layers in Addition mode are just as opaque as Normal
layers. That is, their effect on the composite alpha channel
is the same. For discussion, refer to bug #387449.
svn path=/trunk/; revision=27396
* app/gegl/gimpoperationadditionmode.c: For alpha compositing
consistency, all layers should affect alpha in the same way
independent of layer mode. Replace the compositing algorithm with
a version without the flaws discovered so far in the previous
ones. Don't use it yet though as it requires premultiplied data.
svn path=/trunk/; revision=27382
* app/gegl/gimpoperationadditionmode.c: Refer to the input as 'in'
instead of 'src', the layer as 'layer' instead of 'aux', and the
result as 'out' instead of 'dest'. The old terminology clashes
with at least the SVG 1.2 compositing terminology [1] and there is
no reason for creating confusion.
[1] http://www.w3.org/TR/2004/WD-SVG12-20041027/rendering.html
svn path=/trunk/; revision=27321
* app/gegl/gimpoperationadditionmode.c: Use local variants of
channel offset defines, namely RED instead of RED_PIX etc, to
increase readability.
svn path=/trunk/; revision=27320
* app/gegl/gimpoperationadditionmode.c
(gimp_operation_addition_mode_process): Update with a new version
that is the best known so far (maybe it's even correct?).
svn path=/trunk/; revision=27269
2008-10-12 Michael Natterer <mitch@gimp.org>
* app/gegl/gimpoperationpointcomposer.[ch]: renamed this class...
* app/gegl/gimpoperationlayermode.[ch]: ...to this and add
an own process() virtual function so we are free to hack even
more badly in order to support legacy layer modes and proper
ones which do meningfiul things to alpha. Simply redirect
GeglOperationPointComposer's compose() calls to our own vfunc
for now.
* app/gegl/gegl-types.h
* app/gegl/Makefile.am: changed accordingly.
* app/gegl/gimpoperation*mode.[ch]: changed parent class and
implemented process() method accordingly.
svn path=/trunk/; revision=27251
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
Ville Sokk