71bbd88e00
Commit 3635cf04ab moved the special
handling of bottom-layer compositing to GimpOperationLayerMode.
This required giving the op more control over the process()
function of its subclasses. As a temporary workaround, the commit
bypassed the subclasses entirely, using "gimp:layer-mode" for all
modes. This is the reckoning :)
Add a process() virtual function to GimpOperationLayerMode, which
its subclasses should override instead of
GeglOperationPointComposer3's process() functions. Reinstate the
subclasses (by returning the correct op in
gimp_layer_mode_get_oepration()), and have them override this
function.
Improve the way gimp_operation_layer_mode_process() dispatches to
the actual process function, to slightly lower its overhead and
fix some thread-safety issues.
Remove the "function" field of the layer-mode info array, and have
gimp_layer_mode_get_function() return the
GimpOperationLayerMode::process() function of the corresponding
op's class (caching the result, to keep it cheap.) This reduces
redundancy, allows us to make the ops' process() functions private,
and simplifies SSE dispatching (only used by NORMAL mode,
currently.)
Move the blend and composite functions of the non-specialized
layer modes to gimpoperationlayermode-{blend,composite}.[hc],
respectively, to improve code organization.
Move the SSE2 composite functions to a separate file, so that they
can be built as part of libapplayermodes_sse2, allowing
libapplayermodes to be built without SSE2 compiler flags. This
allows building GIMP with SSE acceleration enabled, while running
the resulting binary on a target with no SSE accelration.
Add a "blend_function" field to the layer-mode info array, and use
it to specify the blend function for the non-specialized modes.
This replaces the separate switch() statement that we used
previously.
Remove the "affected_region" field of the layer-mode info array.
We don't need it anymore, since we can go back to using
GimpOperationLayerMode's virtual get_affected_region() function.
Last but not least, a bunch of code cleanups and consistency
adjustments.
71 lines
3.9 KiB
C
71 lines
3.9 KiB
C
/* GIMP - The GNU Image Manipulation Program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* gimp-layer-modes.h
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* Copyright (C) 2017 Michael Natterer <mitch@gimp.org>
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* Øyvind Kolås <pippin@gimp.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __GIMP_LAYER_MODES_H__
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#define __GIMP_LAYER_MODES_H__
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void gimp_layer_modes_init (void);
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gboolean gimp_layer_mode_is_legacy (GimpLayerMode mode);
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gboolean gimp_layer_mode_is_blend_space_mutable (GimpLayerMode mode);
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gboolean gimp_layer_mode_is_composite_space_mutable (GimpLayerMode mode);
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gboolean gimp_layer_mode_is_composite_mode_mutable (GimpLayerMode mode);
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gboolean gimp_layer_mode_is_subtractive (GimpLayerMode mode);
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GimpLayerColorSpace gimp_layer_mode_get_blend_space (GimpLayerMode mode);
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GimpLayerColorSpace gimp_layer_mode_get_composite_space (GimpLayerMode mode);
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GimpLayerCompositeMode gimp_layer_mode_get_composite_mode (GimpLayerMode mode);
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GimpLayerCompositeMode gimp_layer_mode_get_paint_composite_mode (GimpLayerMode mode);
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const gchar * gimp_layer_mode_get_operation (GimpLayerMode mode);
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GimpLayerModeFunc gimp_layer_mode_get_function (GimpLayerMode mode);
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GimpLayerModeBlendFunc gimp_layer_mode_get_blend_function (GimpLayerMode mode);
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GimpLayerModeContext gimp_layer_mode_get_context (GimpLayerMode mode);
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GimpLayerMode * gimp_layer_mode_get_context_array (GimpLayerMode mode,
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GimpLayerModeContext context,
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gint *n_modes);
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GimpLayerModeGroup gimp_layer_mode_get_group (GimpLayerMode mode);
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const GimpLayerMode * gimp_layer_mode_get_group_array (GimpLayerModeGroup group,
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gint *n_modes);
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gboolean gimp_layer_mode_get_for_group (GimpLayerMode old_mode,
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GimpLayerModeGroup new_group,
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GimpLayerMode *new_mode);
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const Babl * gimp_layer_mode_get_format (GimpLayerMode mode,
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GimpLayerColorSpace composite_space,
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GimpLayerColorSpace blend_space,
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const Babl *preferred_format);
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GimpLayerCompositeRegion gimp_layer_mode_get_included_region (GimpLayerMode mode,
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GimpLayerCompositeMode composite_mode);
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#endif /* __GIMP_LAYER_MODES_H__ */
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