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08053a30a5
2001-11-19 Daniel Egger <degger@fhm.edu> * app/paint-funcs/paint-funcs-mmx.h * app/paint-funcs/paint-funcs.c: Fixed typoes and brought the code back to compileland. Now the code IS tested. :)
115 lines
3.2 KiB
C
115 lines
3.2 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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#ifdef HAVE_ASM_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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/* A drawable has an alphachannel if contains either 4 or 2 bytes data
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* aka GRAYA and RGBA and thus the macro below works. This will have
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* to change if we support bigger formats. We'll do it so for now because
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* masking is always cheaper than passing parameters over the stack. */
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#define HAS_ALPHA(bytes) (~##bytes & 1)
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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 /* HAVE_ASM_MMX */
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#endif /* __PAINT_FUNCS_MMX_H__ */
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