sdl-ios-xcode: src/video/SDL

author	Sam Lantinga <slouken@libsdl.org>
date	Sun, 21 Dec 2008 08:28:25 +0000
parents
children	a0c837a16e4c

rev	line source
2898 e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1 /*
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2 SDL - Simple DirectMedia Layer
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	3 Copyright (C) 1997-2009 Sam Lantinga
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5 This library is free software; you can redistribute it and/or
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	6 modify it under the terms of the GNU Lesser General Public
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	7 License as published by the Free Software Foundation; either
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	8 version 2.1 of the License, or (at your option) any later version.
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	9
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	10 This library is distributed in the hope that it will be useful,
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	11 but WITHOUT ANY WARRANTY; without even the implied warranty of
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	13 Lesser General Public License for more details.
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	14
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	15 You should have received a copy of the GNU Lesser General Public
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	16 License along with this library; if not, write to the Free Software
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	18
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	19 Sam Lantinga
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	20 slouken@libsdl.org
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	21 */
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	22 #include "SDL_config.h"
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	23
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	24 #include "SDL_blit.h"
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	25
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	26 /* This code assumes that r, g, b, a are the source color,
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	27 * and in the blend and add case, the RGB values are premultiplied by a.
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	28 */
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	29
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	30 #define DRAW_MUL(_a, _b) (((unsigned)(_a)*(_b))/255)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	31
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	32 #define DRAW_SETPIXEL(setpixel) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	33 do { \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	34 unsigned sr = r, sg = g, sb = b, sa = a; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	35 setpixel; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	36 } while (0)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	37
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	38 #define DRAW_SETPIXEL_BLEND(getpixel, setpixel) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	39 do { \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	40 unsigned sr, sg, sb, sa; sa; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	41 getpixel; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	42 sr = DRAW_MUL(inva, sr) + r; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	43 sg = DRAW_MUL(inva, sg) + g; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	44 sb = DRAW_MUL(inva, sb) + b; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	45 setpixel; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	46 } while (0)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	47
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	48 #define DRAW_SETPIXEL_ADD(getpixel, setpixel) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	49 do { \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	50 unsigned sr, sg, sb, sa; sa; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	51 getpixel; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	52 sr += r; if (sr > 0xff) sr = 0xff; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	53 sg += g; if (sg > 0xff) sg = 0xff; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	54 sb += b; if (sb > 0xff) sb = 0xff; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	55 setpixel; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	56 } while (0)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	57
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	58 #define DRAW_SETPIXEL_MOD(getpixel, setpixel) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	59 do { \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	60 unsigned sr, sg, sb, sa; sa; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	61 getpixel; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	62 sr = DRAW_MUL(sr, r); \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	63 sg = DRAW_MUL(sg, g); \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	64 sb = DRAW_MUL(sb, b); \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	65 setpixel; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	66 } while (0)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	67
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	68 #define DRAW_SETPIXELXY(x, y, type, bpp, op) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	69 do { \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	70 type pixel = (type )(dst->pixels + y * dst->pitch + x * bpp); \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	71 op; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	72 } while (0)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	73
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	74 /*
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	75 * Define draw operators for RGB555
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	76 */
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	77
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	78 #define DRAW_SETPIXEL_RGB555 \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	79 DRAW_SETPIXEL(RGB555_FROM_RGB(*pixel, sr, sg, sb))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	80
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	81 #define DRAW_SETPIXEL_BLEND_RGB555 \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	82 DRAW_SETPIXEL_BLEND(RGB_FROM_RGB555(*pixel, sr, sg, sb), \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	83 RGB555_FROM_RGB(*pixel, sr, sg, sb))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	84
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	85 #define DRAW_SETPIXEL_ADD_RGB555 \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	86 DRAW_SETPIXEL_ADD(RGB_FROM_RGB555(*pixel, sr, sg, sb), \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	87 RGB555_FROM_RGB(*pixel, sr, sg, sb))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	88
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	89 #define DRAW_SETPIXEL_MOD_RGB555 \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	90 DRAW_SETPIXEL_MOD(RGB_FROM_RGB555(*pixel, sr, sg, sb), \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	91 RGB555_FROM_RGB(*pixel, sr, sg, sb))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	92
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	93 #define DRAW_SETPIXELXY_RGB555(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	94 DRAW_SETPIXELXY(x, y, Uint16, 2, DRAW_SETPIXEL_RGB555)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	95
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	96 #define DRAW_SETPIXELXY_BLEND_RGB555(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	97 DRAW_SETPIXELXY(x, y, Uint16, 2, DRAW_SETPIXEL_BLEND_RGB555)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	98
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	99 #define DRAW_SETPIXELXY_ADD_RGB555(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	100 DRAW_SETPIXELXY(x, y, Uint16, 2, DRAW_SETPIXEL_ADD_RGB555)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	101
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	102 #define DRAW_SETPIXELXY_MOD_RGB555(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	103 DRAW_SETPIXELXY(x, y, Uint16, 2, DRAW_SETPIXEL_MOD_RGB555)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	104
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	105 /*
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	106 * Define draw operators for RGB565
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	107 */
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	108
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	109 #define DRAW_SETPIXEL_RGB565 \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	110 DRAW_SETPIXEL(RGB565_FROM_RGB(*pixel, sr, sg, sb))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	111
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	112 #define DRAW_SETPIXEL_BLEND_RGB565 \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	113 DRAW_SETPIXEL_BLEND(RGB_FROM_RGB565(*pixel, sr, sg, sb), \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	114 RGB565_FROM_RGB(*pixel, sr, sg, sb))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	115
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	116 #define DRAW_SETPIXEL_ADD_RGB565 \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	117 DRAW_SETPIXEL_ADD(RGB_FROM_RGB565(*pixel, sr, sg, sb), \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	118 RGB565_FROM_RGB(*pixel, sr, sg, sb))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	119
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	120 #define DRAW_SETPIXEL_MOD_RGB565 \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	121 DRAW_SETPIXEL_MOD(RGB_FROM_RGB565(*pixel, sr, sg, sb), \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	122 RGB565_FROM_RGB(*pixel, sr, sg, sb))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	123
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	124 #define DRAW_SETPIXELXY_RGB565(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	125 DRAW_SETPIXELXY(x, y, Uint16, 2, DRAW_SETPIXEL_RGB565)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	126
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	127 #define DRAW_SETPIXELXY_BLEND_RGB565(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	128 DRAW_SETPIXELXY(x, y, Uint16, 2, DRAW_SETPIXEL_BLEND_RGB565)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	129
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	130 #define DRAW_SETPIXELXY_ADD_RGB565(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	131 DRAW_SETPIXELXY(x, y, Uint16, 2, DRAW_SETPIXEL_ADD_RGB565)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	132
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	133 #define DRAW_SETPIXELXY_MOD_RGB565(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	134 DRAW_SETPIXELXY(x, y, Uint16, 2, DRAW_SETPIXEL_MOD_RGB565)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	135
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	136 /*
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	137 * Define draw operators for RGB888
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	138 */
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	139
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	140 #define DRAW_SETPIXEL_RGB888 \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	141 DRAW_SETPIXEL(RGB888_FROM_RGB(*pixel, sr, sg, sb))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	142
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	143 #define DRAW_SETPIXEL_BLEND_RGB888 \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	144 DRAW_SETPIXEL_BLEND(RGB_FROM_RGB888(*pixel, sr, sg, sb), \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	145 RGB888_FROM_RGB(*pixel, sr, sg, sb))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	146
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	147 #define DRAW_SETPIXEL_ADD_RGB888 \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	148 DRAW_SETPIXEL_ADD(RGB_FROM_RGB888(*pixel, sr, sg, sb), \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	149 RGB888_FROM_RGB(*pixel, sr, sg, sb))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	150
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	151 #define DRAW_SETPIXEL_MOD_RGB888 \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	152 DRAW_SETPIXEL_MOD(RGB_FROM_RGB888(*pixel, sr, sg, sb), \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	153 RGB888_FROM_RGB(*pixel, sr, sg, sb))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	154
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	155 #define DRAW_SETPIXELXY_RGB888(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	156 DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_RGB888)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	157
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	158 #define DRAW_SETPIXELXY_BLEND_RGB888(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	159 DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_BLEND_RGB888)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	160
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	161 #define DRAW_SETPIXELXY_ADD_RGB888(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	162 DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_ADD_RGB888)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	163
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	164 #define DRAW_SETPIXELXY_MOD_RGB888(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	165 DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_MOD_RGB888)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	166
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	167 /*
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	168 * Define draw operators for general RGB
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	169 */
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	170
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	171 #define DRAW_SETPIXEL_RGB \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	172 DRAW_SETPIXEL(PIXEL_FROM_RGB(*pixel, fmt, sr, sg, sb))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	173
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	174 #define DRAW_SETPIXEL_BLEND_RGB \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	175 DRAW_SETPIXEL_BLEND(RGB_FROM_PIXEL(*pixel, fmt, sr, sg, sb), \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	176 PIXEL_FROM_RGB(*pixel, fmt, sr, sg, sb))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	177
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	178 #define DRAW_SETPIXEL_ADD_RGB \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	179 DRAW_SETPIXEL_ADD(RGB_FROM_PIXEL(*pixel, fmt, sr, sg, sb), \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	180 PIXEL_FROM_RGB(*pixel, fmt, sr, sg, sb))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	181
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	182 #define DRAW_SETPIXEL_MOD_RGB \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	183 DRAW_SETPIXEL_MOD(RGB_FROM_PIXEL(*pixel, fmt, sr, sg, sb), \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	184 PIXEL_FROM_RGB(*pixel, fmt, sr, sg, sb))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	185
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	186 #define DRAW_SETPIXELXY2_RGB(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	187 DRAW_SETPIXELXY(x, y, Uint16, 2, DRAW_SETPIXEL_RGB)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	188
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	189 #define DRAW_SETPIXELXY4_RGB(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	190 DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_RGB)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	191
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	192 #define DRAW_SETPIXELXY2_BLEND_RGB(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	193 DRAW_SETPIXELXY(x, y, Uint16, 2, DRAW_SETPIXEL_BLEND_RGB)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	194
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	195 #define DRAW_SETPIXELXY4_BLEND_RGB(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	196 DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_BLEND_RGB)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	197
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	198 #define DRAW_SETPIXELXY2_ADD_RGB(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	199 DRAW_SETPIXELXY(x, y, Uint16, 2, DRAW_SETPIXEL_ADD_RGB)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	200
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	201 #define DRAW_SETPIXELXY4_ADD_RGB(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	202 DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_ADD_RGB)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	203
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	204 #define DRAW_SETPIXELXY2_MOD_RGB(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	205 DRAW_SETPIXELXY(x, y, Uint16, 2, DRAW_SETPIXEL_MOD_RGB)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	206
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	207 #define DRAW_SETPIXELXY4_MOD_RGB(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	208 DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_MOD_RGB)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	209
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	210
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	211 /*
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	212 * Define draw operators for general RGBA
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	213 */
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	214
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	215 #define DRAW_SETPIXEL_RGBA \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	216 DRAW_SETPIXEL(PIXEL_FROM_RGBA(*pixel, fmt, sr, sg, sb, sa))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	217
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	218 #define DRAW_SETPIXEL_BLEND_RGBA \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	219 DRAW_SETPIXEL_BLEND(RGBA_FROM_PIXEL(*pixel, fmt, sr, sg, sb, sa), \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	220 PIXEL_FROM_RGBA(*pixel, fmt, sr, sg, sb, sa))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	221
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	222 #define DRAW_SETPIXEL_ADD_RGBA \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	223 DRAW_SETPIXEL_ADD(RGBA_FROM_PIXEL(*pixel, fmt, sr, sg, sb, sa), \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	224 PIXEL_FROM_RGBA(*pixel, fmt, sr, sg, sb, sa))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	225
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	226 #define DRAW_SETPIXEL_MOD_RGBA \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	227 DRAW_SETPIXEL_MOD(RGBA_FROM_PIXEL(*pixel, fmt, sr, sg, sb, sa), \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	228 PIXEL_FROM_RGBA(*pixel, fmt, sr, sg, sb, sa))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	229
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	230 #define DRAW_SETPIXELXY4_RGBA(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	231 DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_RGBA)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	232
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	233 #define DRAW_SETPIXELXY4_BLEND_RGBA(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	234 DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_BLEND_RGBA)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	235
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	236 #define DRAW_SETPIXELXY4_ADD_RGBA(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	237 DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_ADD_RGBA)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	238
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	239 #define DRAW_SETPIXELXY4_MOD_RGBA(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	240 DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_MOD_RGBA)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	241
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	242 /*
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	243 * Define line drawing macro
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	244 */
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	245
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	246 #define ABS(_x) ((_x) < 0 ? -(_x) : (_x))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	247
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	248 #define SWAP(_x, _y) do { int tmp; tmp = _x; _x = _y; _y = tmp; } while (0)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	249
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	250 #define BRESENHAM(x0, y0, x1, y1, op) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	251 { \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	252 int deltax, deltay, steep, error, xstep, ystep, x, y; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	253 \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	254 deltax = ABS(x1 - x0); \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	255 deltay = ABS(y1 - y0); \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	256 steep = (deltay > deltax); \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	257 if (steep) { \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	258 SWAP(x0, y0); \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	259 SWAP(x1, y1); \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	260 SWAP(deltax, deltay); \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	261 } \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	262 error = (x1 - x0) / 2; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	263 y = y0; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	264 if (x0 > x1) { \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	265 xstep = -1; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	266 } else { \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	267 xstep = 1; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	268 } \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	269 if (y0 < y1) { \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	270 ystep = 1; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	271 } else { \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	272 ystep = -1; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	273 } \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	274 if (!steep) { \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	275 for (x = x0; x != x1; x += xstep) { \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	276 op(x, y); \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	277 error -= deltay; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	278 if (error < 0) { \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	279 y += ystep; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	280 error += deltax; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	281 } \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	282 } \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	283 } else { \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	284 for (x = x0; x != x1; x += xstep) { \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	285 op(y, x); \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	286 error -= deltay; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	287 if (error < 0) { \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	288 y += ystep; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	289 error += deltax; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	290 } \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	291 } \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	292 } \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	293 }
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	294
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	295 /*
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	296 * Define blend fill macro
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	297 */
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	298
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	299 #define BLENDRECT(type, op) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	300 do { \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	301 int w; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	302 int width = dstrect->w; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	303 int height = dstrect->h; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	304 int pitch = (dst->pitch / dst->format->BytesPerPixel); \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	305 int skip = pitch - width; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	306 type pixel = (type )dst->pixels + dstrect->y * pitch + dstrect->x; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	307 while (height--) { \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	308 { int n = (width+3)/4; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	309 switch (width & 3) { \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	310 case 0: do { op; pixel++; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	311 case 3: op; pixel++; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	312 case 2: op; pixel++; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	313 case 1: op; pixel++; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	314 } while ( --n > 0 ); \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	315 } \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	316 } \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	317 pixel += skip; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	318 } \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	319 } while (0)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	320
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	321 /*
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	322 * Define blend line macro
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	323 */
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	324
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	325 /* vi: set ts=4 sw=4 expandtab: */

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e40448bc7727 Share code between fill and line drawing