sdl-ios-xcode: src/video/SDL

annotate src/video/SDL_draw.h @ 3473:7bdc10624cba

This is terrible, but the OpenGL standard says that lines are half open, which means that one endpoint is not covered so adjoining lines don't overlap. It also doesn't define which end is open, and indeed Mac OS X and Linux differ. Mac OS X seems to leave the second endpoint open, but Linux uses the right-most endpoint for x major lines and the bottom-most endpoint for y major lines.

author	Sam Lantinga <slouken@libsdl.org>
date	Sat, 21 Nov 2009 07:14:21 +0000
parents	9f2482d6662c
children	0267b8b1595c

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
2901 133601e3b255 Added RenderPiont() API Sam Lantinga <slouken@libsdl.org> parents: 2900 diff changeset	32 #define DRAW_FASTSETPIXEL(x, y, type, bpp, color) \
2918 bd518fc76f28 Updated to build on Windows Sam Lantinga <slouken@libsdl.org> parents: 2903 diff changeset	33 (type )((Uint8 )dst->pixels + y dst->pitch + x * bpp) = (type) color
2901 133601e3b255 Added RenderPiont() API Sam Lantinga <slouken@libsdl.org> parents: 2900 diff changeset	34
133601e3b255 Added RenderPiont() API Sam Lantinga <slouken@libsdl.org> parents: 2900 diff changeset	35 #define DRAW_FASTSETPIXEL1(x, y) DRAW_FASTSETPIXEL(x, y, Uint8, 1, color);
133601e3b255 Added RenderPiont() API Sam Lantinga <slouken@libsdl.org> parents: 2900 diff changeset	36 #define DRAW_FASTSETPIXEL2(x, y) DRAW_FASTSETPIXEL(x, y, Uint16, 2, color);
133601e3b255 Added RenderPiont() API Sam Lantinga <slouken@libsdl.org> parents: 2900 diff changeset	37 #define DRAW_FASTSETPIXEL4(x, y) DRAW_FASTSETPIXEL(x, y, Uint32, 4, color);
133601e3b255 Added RenderPiont() API Sam Lantinga <slouken@libsdl.org> parents: 2900 diff changeset	38
2898 e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	39 #define DRAW_SETPIXEL(setpixel) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	40 do { \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	41 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	42 setpixel; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	43 } while (0)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	44
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	45 #define DRAW_SETPIXEL_BLEND(getpixel, setpixel) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	46 do { \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	47 unsigned sr, sg, sb, sa; sa; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	48 getpixel; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	49 sr = DRAW_MUL(inva, sr) + r; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	50 sg = DRAW_MUL(inva, sg) + g; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	51 sb = DRAW_MUL(inva, sb) + b; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	52 setpixel; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	53 } while (0)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	54
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	55 #define DRAW_SETPIXEL_ADD(getpixel, setpixel) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	56 do { \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	57 unsigned sr, sg, sb, sa; sa; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	58 getpixel; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	59 sr += r; if (sr > 0xff) sr = 0xff; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	60 sg += g; if (sg > 0xff) sg = 0xff; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	61 sb += b; if (sb > 0xff) sb = 0xff; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	62 setpixel; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	63 } while (0)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	64
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	65 #define DRAW_SETPIXEL_MOD(getpixel, setpixel) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	66 do { \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	67 unsigned sr, sg, sb, sa; sa; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	68 getpixel; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	69 sr = DRAW_MUL(sr, r); \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	70 sg = DRAW_MUL(sg, g); \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	71 sb = DRAW_MUL(sb, b); \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	72 setpixel; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	73 } while (0)
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_SETPIXELXY(x, y, type, bpp, op) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	76 do { \
2918 bd518fc76f28 Updated to build on Windows Sam Lantinga <slouken@libsdl.org> parents: 2903 diff changeset	77 type pixel = (type )((Uint8 )dst->pixels + y dst->pitch + x * bpp); \
2898 e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	78 op; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	79 } while (0)
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 /*
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	82 * Define draw operators for RGB555
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	83 */
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_RGB555 \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	86 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	87
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	88 #define DRAW_SETPIXEL_BLEND_RGB555 \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	89 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	90 RGB555_FROM_RGB(*pixel, sr, sg, sb))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	91
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	92 #define DRAW_SETPIXEL_ADD_RGB555 \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	93 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	94 RGB555_FROM_RGB(*pixel, sr, sg, sb))
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_SETPIXEL_MOD_RGB555 \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	97 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	98 RGB555_FROM_RGB(*pixel, sr, sg, sb))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	99
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	100 #define DRAW_SETPIXELXY_RGB555(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	101 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	102
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	103 #define DRAW_SETPIXELXY_BLEND_RGB555(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	104 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	105
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	106 #define DRAW_SETPIXELXY_ADD_RGB555(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	107 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	108
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	109 #define DRAW_SETPIXELXY_MOD_RGB555(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	110 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	111
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	112 /*
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	113 * Define draw operators for RGB565
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	114 */
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_RGB565 \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	117 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	118
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	119 #define DRAW_SETPIXEL_BLEND_RGB565 \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	120 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	121 RGB565_FROM_RGB(*pixel, sr, sg, sb))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	122
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	123 #define DRAW_SETPIXEL_ADD_RGB565 \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	124 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	125 RGB565_FROM_RGB(*pixel, sr, sg, sb))
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_SETPIXEL_MOD_RGB565 \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	128 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	129 RGB565_FROM_RGB(*pixel, sr, sg, sb))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	130
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	131 #define DRAW_SETPIXELXY_RGB565(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	132 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	133
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	134 #define DRAW_SETPIXELXY_BLEND_RGB565(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	135 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	136
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	137 #define DRAW_SETPIXELXY_ADD_RGB565(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	138 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	139
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	140 #define DRAW_SETPIXELXY_MOD_RGB565(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	141 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	142
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	143 /*
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	144 * Define draw operators for RGB888
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	145 */
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_RGB888 \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	148 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	149
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	150 #define DRAW_SETPIXEL_BLEND_RGB888 \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	151 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	152 RGB888_FROM_RGB(*pixel, sr, sg, sb))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	153
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	154 #define DRAW_SETPIXEL_ADD_RGB888 \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	155 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	156 RGB888_FROM_RGB(*pixel, sr, sg, sb))
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_SETPIXEL_MOD_RGB888 \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	159 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	160 RGB888_FROM_RGB(*pixel, sr, sg, sb))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	161
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	162 #define DRAW_SETPIXELXY_RGB888(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	163 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	164
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	165 #define DRAW_SETPIXELXY_BLEND_RGB888(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	166 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	167
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	168 #define DRAW_SETPIXELXY_ADD_RGB888(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	169 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	170
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	171 #define DRAW_SETPIXELXY_MOD_RGB888(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	172 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	173
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	174 /*
2899 a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	175 * Define draw operators for ARGB8888
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	176 */
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	177
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	178 #define DRAW_SETPIXEL_ARGB8888 \
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	179 DRAW_SETPIXEL(ARGB8888_FROM_RGBA(*pixel, sr, sg, sb, sa))
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	180
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	181 #define DRAW_SETPIXEL_BLEND_ARGB8888 \
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	182 DRAW_SETPIXEL_BLEND(RGBA_FROM_ARGB8888(*pixel, sr, sg, sb, sa), \
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	183 ARGB8888_FROM_RGBA(*pixel, sr, sg, sb, sa))
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	184
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	185 #define DRAW_SETPIXEL_ADD_ARGB8888 \
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	186 DRAW_SETPIXEL_ADD(RGBA_FROM_ARGB8888(*pixel, sr, sg, sb, sa), \
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	187 ARGB8888_FROM_RGBA(*pixel, sr, sg, sb, sa))
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	188
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	189 #define DRAW_SETPIXEL_MOD_ARGB8888 \
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	190 DRAW_SETPIXEL_MOD(RGBA_FROM_ARGB8888(*pixel, sr, sg, sb, sa), \
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	191 ARGB8888_FROM_RGBA(*pixel, sr, sg, sb, sa))
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	192
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	193 #define DRAW_SETPIXELXY_ARGB8888(x, y) \
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	194 DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_ARGB8888)
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	195
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	196 #define DRAW_SETPIXELXY_BLEND_ARGB8888(x, y) \
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	197 DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_BLEND_ARGB8888)
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	198
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	199 #define DRAW_SETPIXELXY_ADD_ARGB8888(x, y) \
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	200 DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_ADD_ARGB8888)
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	201
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	202 #define DRAW_SETPIXELXY_MOD_ARGB8888(x, y) \
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	203 DRAW_SETPIXELXY(x, y, Uint32, 4, DRAW_SETPIXEL_MOD_ARGB8888)
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	204
a0c837a16e4c Added ARGB optimized case for Mac OS X Sam Lantinga <slouken@libsdl.org> parents: 2898 diff changeset	205 /*
2898 e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	206 * Define draw operators for general RGB
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	207 */
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	208
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	209 #define DRAW_SETPIXEL_RGB \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	210 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	211
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	212 #define DRAW_SETPIXEL_BLEND_RGB \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	213 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	214 PIXEL_FROM_RGB(*pixel, fmt, sr, sg, sb))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	215
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	216 #define DRAW_SETPIXEL_ADD_RGB \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	217 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	218 PIXEL_FROM_RGB(*pixel, fmt, sr, sg, sb))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	219
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	220 #define DRAW_SETPIXEL_MOD_RGB \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	221 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	222 PIXEL_FROM_RGB(*pixel, fmt, sr, sg, sb))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	223
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	224 #define DRAW_SETPIXELXY2_RGB(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	225 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	226
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	227 #define DRAW_SETPIXELXY4_RGB(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	228 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	229
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	230 #define DRAW_SETPIXELXY2_BLEND_RGB(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	231 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	232
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	233 #define DRAW_SETPIXELXY4_BLEND_RGB(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_RGB)
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_SETPIXELXY2_ADD_RGB(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	237 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	238
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	239 #define DRAW_SETPIXELXY4_ADD_RGB(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_ADD_RGB)
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 #define DRAW_SETPIXELXY2_MOD_RGB(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	243 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	244
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	245 #define DRAW_SETPIXELXY4_MOD_RGB(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	246 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	247
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	248
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 draw operators for general RGBA
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
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	253 #define DRAW_SETPIXEL_RGBA \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	254 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	255
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	256 #define DRAW_SETPIXEL_BLEND_RGBA \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	257 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	258 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	259
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	260 #define DRAW_SETPIXEL_ADD_RGBA \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	261 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	262 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	263
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	264 #define DRAW_SETPIXEL_MOD_RGBA \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	265 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	266 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	267
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	268 #define DRAW_SETPIXELXY4_RGBA(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	269 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	270
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	271 #define DRAW_SETPIXELXY4_BLEND_RGBA(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	272 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	273
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	274 #define DRAW_SETPIXELXY4_ADD_RGBA(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	275 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	276
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	277 #define DRAW_SETPIXELXY4_MOD_RGBA(x, y) \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	278 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	279
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	280 /*
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	281 * Define line drawing macro
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
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	284 #define ABS(_x) ((_x) < 0 ? -(_x) : (_x))
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	285
2903 e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	286 #define BRESENHAM(x1, y1, x2, y2, op) \
2898 e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	287 { \
2903 e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	288 int i, deltax, deltay, numpixels; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	289 int d, dinc1, dinc2; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	290 int x, xinc1, xinc2; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	291 int y, yinc1, yinc2; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	292 \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	293 deltax = ABS(x2 - x1); \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	294 deltay = ABS(y2 - y1); \
2898 e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	295 \
2903 e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	296 if (deltax >= deltay) { \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	297 numpixels = deltax + 1; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	298 d = (2 * deltay) - deltax; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	299 dinc1 = deltay * 2; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	300 dinc2 = (deltay - deltax) * 2; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	301 xinc1 = 1; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	302 xinc2 = 1; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	303 yinc1 = 0; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	304 yinc2 = 1; \
2898 e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	305 } else { \
2903 e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	306 numpixels = deltay + 1; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	307 d = (2 * deltax) - deltay; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	308 dinc1 = deltax * 2; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	309 dinc2 = (deltax - deltay) * 2; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	310 xinc1 = 0; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	311 xinc2 = 1; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	312 yinc1 = 1; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	313 yinc2 = 1; \
2898 e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	314 } \
2903 e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	315 \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	316 if (x1 > x2) { \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	317 xinc1 = -xinc1; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	318 xinc2 = -xinc2; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	319 } \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	320 if (y1 > y2) { \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	321 yinc1 = -yinc1; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	322 yinc2 = -yinc2; \
2898 e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	323 } \
2903 e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	324 \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	325 x = x1; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	326 y = y1; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	327 \
3063 9f2482d6662c Fixed off by one error in line drawing code Sam Lantinga <slouken@libsdl.org> parents: 2918 diff changeset	328 for (i = 0; i < numpixels; ++i) { \
2903 e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	329 op(x, y); \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	330 if (d < 0) { \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	331 d += dinc1; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	332 x += xinc1; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	333 y += yinc1; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	334 } else { \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	335 d += dinc2; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	336 x += xinc2; \
e426c4fc9cf7 Working Bresenham line drawing algorithm. We can optimize later, if needed. Sam Lantinga <slouken@libsdl.org> parents: 2901 diff changeset	337 y += yinc2; \
2898 e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	338 } \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	339 } \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	340 }
2900 3a9636c83849 Make it possible to switch algorithms in the future Sam Lantinga <slouken@libsdl.org> parents: 2899 diff changeset	341 #define DRAWLINE(x0, y0, x1, y1, op) BRESENHAM(x0, y0, x1, y1, op)
2898 e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	342
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	343 /*
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	344 * Define blend fill macro
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	345 */
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	346
2900 3a9636c83849 Make it possible to switch algorithms in the future Sam Lantinga <slouken@libsdl.org> parents: 2899 diff changeset	347 #define FILLRECT(type, op) \
2898 e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	348 do { \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	349 int width = dstrect->w; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	350 int height = dstrect->h; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	351 int pitch = (dst->pitch / dst->format->BytesPerPixel); \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	352 int skip = pitch - width; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	353 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	354 while (height--) { \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	355 { int n = (width+3)/4; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	356 switch (width & 3) { \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	357 case 0: do { op; pixel++; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	358 case 3: op; pixel++; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	359 case 2: op; pixel++; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	360 case 1: op; pixel++; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	361 } while ( --n > 0 ); \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	362 } \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	363 } \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	364 pixel += skip; \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	365 } \
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	366 } while (0)
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	367
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	368 /*
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	369 * Define blend line macro
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	370 */
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	371
e40448bc7727 Share code between fill and line drawing Sam Lantinga <slouken@libsdl.org> parents: diff changeset	372 /* vi: set ts=4 sw=4 expandtab: */

Mercurial > sdl-ios-xcode

annotate src/video/SDL_draw.h @ 3473:7bdc10624cba