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7836563081
* configure.in: GIMP_ENABLE_MMX => 0, disabling symbol * app/paint-funcs/paint-funcs-mmx.h: disabled *_mmx() functions *app/paint-funcs/paint-funcs.c: disabled update of layer_mode_funcs table
138 lines
5.1 KiB
C
138 lines
5.1 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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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 2 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/*
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* This file is supposed to contain the MMX implementation of the
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* pixelfiddeling paint-functions.
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*/
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#ifndef __PAINT_FUNCS_MMX_H__
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#define __PAINT_FUNCS_MMX_H__
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/* FIXME: Needs a bigger overhaul. Maybe inline assembly would be better?
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* 'bigger overhaul' indeed, but let's not talk about assembly language now (Nov-03-2002)
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* This code is being disabled to address Bug #86290; point your favorite browser to
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* http://bugzilla.gnome.org/show_bug.cgi?id=86290 for the reason this is being done.
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* Presuming you've read the "Additional Comments" there, and really, really, think that
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* Gimp ought to have this MMX code, RIGHT NOW (!) then this is what I believe you have to do:
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* 1. Be aware that the MMX code is incomplete; the macro USE_MMX_PIXEL_OP_3A_1A has been
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* written the way it has so that the MMX code is invoked only on region depths it knows
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* how to handle. In that case, the MMX code executes and the macro performs a return to
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* caller. Otherwise, it DOES NOT DO ANYTHING, and the macro ought to be followed by
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* code that had better do something. Check out an archival app/paint_funcs/paint_funcs.c
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* say, CVS version 1.98 (Nov 2, 2001) and study how USE_MMX_PIXEL_OP_3A_1A was used there;
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* you'll discover that it must have some kind of alternate code following in case program
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* flow does not return to the caller inside the macro.
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* 2a. For this reason, you have to pretty much undo the separation of 'generic C' and 'mmx' code at
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* at the heart of Nov-18-2001, Nov-19-2001 check-ins (See Daniel Egger's comments in
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* ChangeLog). That, or replicate the 'generic C' in the various *_mmx functions implemented
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* in this header file, below. Not only would that make the separation effort rather pointless, but
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* the replication of functionality creates a maintenance problem.
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* 2b. Alternatively, you can finish the MMX code so that it handles all cases that the generic
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* C does. This is ideal, and makes sensible the separation effort, for then USE_MMX_PIXEL_OP_3A_1A
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* need not have any additional implementation following. For that matter, you'd likely not
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* even need the macro. You'd also be a better man than I am, Gunga Din.
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* Whatever you do, proceed carefully and keep fresh batteries in your electric torch: there be monsters here.
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* grosgood@rcn.com
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*/
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#ifdef HAVE_ASM_MMX
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#if GIMP_ENABLE_MMX
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#define MMX_PIXEL_OP(x) \
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void \
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x( \
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const guchar *src1, \
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const guchar *src2, \
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guint count, \
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guchar *dst) __attribute((regparm(3)));
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#define MMX_PIXEL_OP_3A_1A(op) \
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MMX_PIXEL_OP(op##_pixels_3a_3a) \
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MMX_PIXEL_OP(op##_pixels_1a_1a)
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#define USE_MMX_PIXEL_OP_3A_1A(op) \
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if (HAS_ALPHA (alms->bytes1) && HAS_ALPHA (alms->bytes2)) \
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{ \
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if (alms->bytes1==2 && alms->bytes2==2) \
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return op##_pixels_1a_1a(alms->src1, alms->src2, alms->length, *(alms->dest)); \
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if (alms->bytes1==4 && alms->bytes2==4) \
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return op##_pixels_3a_3a(alms->src1, alms->src2, alms->length, *(alms->dest)); \
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}
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MMX_PIXEL_OP_3A_1A(multiply);
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static void
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layer_multiply_mode_mmx (struct apply_layer_mode_struct *alms)
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{
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USE_MMX_PIXEL_OP_3A_1A(multiply);
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}
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MMX_PIXEL_OP_3A_1A(screen);
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static void
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layer_screen_mode_mmx (struct apply_layer_mode_struct *alms)
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{
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USE_MMX_PIXEL_OP_3A_1A(screen);
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}
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MMX_PIXEL_OP_3A_1A(overlay);
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static void
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layer_overlay_mode_mmx (struct apply_layer_mode_struct *alms)
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{
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USE_MMX_PIXEL_OP_3A_1A(overlay);
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}
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MMX_PIXEL_OP_3A_1A(difference);
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static void
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layer_difference_mode_mmx (struct apply_layer_mode_struct *alms)
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{
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USE_MMX_PIXEL_OP_3A_1A(difference);
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}
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MMX_PIXEL_OP_3A_1A(add);
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static void
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layer_addition_mode_mmx (struct apply_layer_mode_struct *alms)
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{
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USE_MMX_PIXEL_OP_3A_1A(add);
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}
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MMX_PIXEL_OP_3A_1A(substract);
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static void
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layer_subtract_mode_mmx (struct apply_layer_mode_struct *alms)
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{
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USE_MMX_PIXEL_OP_3A_1A(substract);
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}
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MMX_PIXEL_OP_3A_1A(darken);
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static void
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layer_darken_only_mode_mmx (struct apply_layer_mode_struct *alms)
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{
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USE_MMX_PIXEL_OP_3A_1A(darken);
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}
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MMX_PIXEL_OP_3A_1A(lighten);
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static void
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layer_lighten_only_mode_mmx (struct apply_layer_mode_struct *alms)
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{
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USE_MMX_PIXEL_OP_3A_1A(lighten);
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}
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#endif /* GIMP_ENABLE_MMX */
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#endif /* HAVE_ASM_MMX */
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#endif /* __PAINT_FUNCS_MMX_H__ */
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