pygame: src/surface.h annotate

annotate src/surface.h @ 3194:9fcb7abf3185 default tip

Remove some gcc 4.7.2 compiler warnings

author	Lenard Lindstrom <len-l@telus.net>
date	Tue, 23 Apr 2013 19:53:36 -0700
parents	55d7ab7a344f
children

rev	line source
820 dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	1 /*
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	2 pygame - Python Game Library
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	3 Copyright (C) 2000-2001 Pete Shinners
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	4 Copyright (C) 2007 Marcus von Appen
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	5
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	6 This library is free software; you can redistribute it and/or
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	7 modify it under the terms of the GNU Library General Public
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	8 License as published by the Free Software Foundation; either
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	9 version 2 of the License, or (at your option) any later version.
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	10
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	11 This library is distributed in the hope that it will be useful,
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	12 but WITHOUT ANY WARRANTY; without even the implied warranty of
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	14 Library General Public License for more details.
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	15
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	16 You should have received a copy of the GNU Library General Public
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	17 License along with this library; if not, write to the Free
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	19
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	20 Pete Shinners
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	21 pete@shinners.org
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	22 */
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	23
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	24 #ifndef SURFACE_H
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	25 #define SURFACE_H
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	26
2075 38a814e12f12 Remove distracting '"_POSIX_C_SOURCE" redefined' GCC warnings from linux builds. Lenard Lindstrom <len-l@telus.net> parents: 1514 diff changeset	27 /* This is defined in SDL.h */
38a814e12f12 Remove distracting '"_POSIX_C_SOURCE" redefined' GCC warnings from linux builds. Lenard Lindstrom <len-l@telus.net> parents: 1514 diff changeset	28 #if defined(_POSIX_C_SOURCE)
38a814e12f12 Remove distracting '"_POSIX_C_SOURCE" redefined' GCC warnings from linux builds. Lenard Lindstrom <len-l@telus.net> parents: 1514 diff changeset	29 #undef _POSIX_C_SOURCE
38a814e12f12 Remove distracting '"_POSIX_C_SOURCE" redefined' GCC warnings from linux builds. Lenard Lindstrom <len-l@telus.net> parents: 1514 diff changeset	30 #endif
38a814e12f12 Remove distracting '"_POSIX_C_SOURCE" redefined' GCC warnings from linux builds. Lenard Lindstrom <len-l@telus.net> parents: 1514 diff changeset	31
820 dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	32 #include <SDL.h>
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	33 #include "pygame.h"
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	34
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	35 #define PYGAME_BLEND_ADD 0x1
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	36 #define PYGAME_BLEND_SUB 0x2
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	37 #define PYGAME_BLEND_MULT 0x3
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	38 #define PYGAME_BLEND_MIN 0x4
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	39 #define PYGAME_BLEND_MAX 0x5
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	40
1141 99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	41 #define PYGAME_BLEND_RGB_ADD 0x1
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	42 #define PYGAME_BLEND_RGB_SUB 0x2
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	43 #define PYGAME_BLEND_RGB_MULT 0x3
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	44 #define PYGAME_BLEND_RGB_MIN 0x4
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	45 #define PYGAME_BLEND_RGB_MAX 0x5
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	46
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	47 #define PYGAME_BLEND_RGBA_ADD 0x6
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	48 #define PYGAME_BLEND_RGBA_SUB 0x7
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	49 #define PYGAME_BLEND_RGBA_MULT 0x8
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	50 #define PYGAME_BLEND_RGBA_MIN 0x9
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	51 #define PYGAME_BLEND_RGBA_MAX 0x10
3095 549f3fb44e55 Add support for premultiplied alpha, necessary for integration with Cairo. David Turner <novalis@novalis.org> parents: 2075 diff changeset	52 #define PYGAME_BLEND_PREMULTIPLIED 0x11
1141 99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	53
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	54
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	55
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	56
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	57
1502 b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	58 #if SDL_BYTEORDER == SDL_LIL_ENDIAN
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	59 #define GET_PIXEL_24(b) (b[0] + (b[1] << 8) + (b[2] << 16))
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	60 #else
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	61 #define GET_PIXEL_24(b) (b[2] + (b[1] << 8) + (b[0] << 16))
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	62 #endif
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	63
820 dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	64 #define GET_PIXEL(pxl, bpp, source) \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	65 switch (bpp) \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	66 { \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	67 case 2: \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	68 pxl = ((Uint16 ) (source)); \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	69 break; \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	70 case 4: \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	71 pxl = ((Uint32 ) (source)); \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	72 break; \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	73 default: \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	74 { \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	75 Uint8 b = (Uint8 ) source; \
1502 b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	76 pxl = GET_PIXEL_24(b); \
820 dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	77 } \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	78 break; \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	79 }
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	80
1505 902b98865c6c fix per-pixel alpha bug involving pixel unpacking Lenard Lindstrom <len-l@telus.net> parents: 1504 diff changeset	81 #define GET_PIXELVALS(_sR, _sG, _sB, _sA, px, fmt, ppa) \
985 9799aebf78f9 Improved blit and fill macros for surface operations. marcus parents: 820 diff changeset	82 _sR = ((px & fmt->Rmask) >> fmt->Rshift); \
9799aebf78f9 Improved blit and fill macros for surface operations. marcus parents: 820 diff changeset	83 _sR = (_sR << fmt->Rloss) + (_sR >> (8 - (fmt->Rloss << 1))); \
9799aebf78f9 Improved blit and fill macros for surface operations. marcus parents: 820 diff changeset	84 _sG = ((px & fmt->Gmask) >> fmt->Gshift); \
9799aebf78f9 Improved blit and fill macros for surface operations. marcus parents: 820 diff changeset	85 _sG = (_sG << fmt->Gloss) + (_sG >> (8 - (fmt->Gloss << 1))); \
9799aebf78f9 Improved blit and fill macros for surface operations. marcus parents: 820 diff changeset	86 _sB = ((px & fmt->Bmask) >> fmt->Bshift); \
9799aebf78f9 Improved blit and fill macros for surface operations. marcus parents: 820 diff changeset	87 _sB = (_sB << fmt->Bloss) + (_sB >> (8 - (fmt->Bloss << 1))); \
1505 902b98865c6c fix per-pixel alpha bug involving pixel unpacking Lenard Lindstrom <len-l@telus.net> parents: 1504 diff changeset	88 if (ppa) \
985 9799aebf78f9 Improved blit and fill macros for surface operations. marcus parents: 820 diff changeset	89 { \
9799aebf78f9 Improved blit and fill macros for surface operations. marcus parents: 820 diff changeset	90 _sA = ((px & fmt->Amask) >> fmt->Ashift); \
9799aebf78f9 Improved blit and fill macros for surface operations. marcus parents: 820 diff changeset	91 _sA = (_sA << fmt->Aloss) + (_sA >> (8 - (fmt->Aloss << 1))); \
9799aebf78f9 Improved blit and fill macros for surface operations. marcus parents: 820 diff changeset	92 } \
9799aebf78f9 Improved blit and fill macros for surface operations. marcus parents: 820 diff changeset	93 else \
9799aebf78f9 Improved blit and fill macros for surface operations. marcus parents: 820 diff changeset	94 { \
9799aebf78f9 Improved blit and fill macros for surface operations. marcus parents: 820 diff changeset	95 _sA = 255; \
9799aebf78f9 Improved blit and fill macros for surface operations. marcus parents: 820 diff changeset	96 }
820 dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	97
985 9799aebf78f9 Improved blit and fill macros for surface operations. marcus parents: 820 diff changeset	98 #define GET_PIXELVALS_1(sr, sg, sb, sa, _src, _fmt) \
9799aebf78f9 Improved blit and fill macros for surface operations. marcus parents: 820 diff changeset	99 sr = _fmt->palette->colors[((Uint8 ) (_src))].r; \
9799aebf78f9 Improved blit and fill macros for surface operations. marcus parents: 820 diff changeset	100 sg = _fmt->palette->colors[((Uint8 ) (_src))].g; \
9799aebf78f9 Improved blit and fill macros for surface operations. marcus parents: 820 diff changeset	101 sb = _fmt->palette->colors[((Uint8 ) (_src))].b; \
820 dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	102 sa = 255;
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	103
1142 befac1186c08 some fixes for BLEND_RGBA_* Rene Dudfield <renesd@gmail.com> parents: 1141 diff changeset	104
befac1186c08 some fixes for BLEND_RGBA_* Rene Dudfield <renesd@gmail.com> parents: 1141 diff changeset	105
befac1186c08 some fixes for BLEND_RGBA_* Rene Dudfield <renesd@gmail.com> parents: 1141 diff changeset	106
befac1186c08 some fixes for BLEND_RGBA_* Rene Dudfield <renesd@gmail.com> parents: 1141 diff changeset	107
befac1186c08 some fixes for BLEND_RGBA_* Rene Dudfield <renesd@gmail.com> parents: 1141 diff changeset	108
befac1186c08 some fixes for BLEND_RGBA_* Rene Dudfield <renesd@gmail.com> parents: 1141 diff changeset	109
1502 b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	110 #if SDL_BYTEORDER == SDL_LIL_ENDIAN
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	111 #define SET_OFFSETS_24(or, og, ob, fmt) \
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	112 { \
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	113 or = (fmt->Rshift == 0 ? 0 : \
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	114 fmt->Rshift == 8 ? 1 : \
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	115 2 ); \
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	116 og = (fmt->Gshift == 0 ? 0 : \
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	117 fmt->Gshift == 8 ? 1 : \
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	118 2 ); \
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	119 ob = (fmt->Bshift == 0 ? 0 : \
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	120 fmt->Bshift == 8 ? 1 : \
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	121 2 ); \
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	122 }
1514 eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	123
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	124 #define SET_OFFSETS_32(or, og, ob, fmt) \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	125 { \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	126 or = (fmt->Rshift == 0 ? 0 : \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	127 fmt->Rshift == 8 ? 1 : \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	128 fmt->Rshift == 16 ? 2 : \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	129 3 ); \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	130 og = (fmt->Gshift == 0 ? 0 : \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	131 fmt->Gshift == 8 ? 1 : \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	132 fmt->Gshift == 16 ? 2 : \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	133 3 ); \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	134 ob = (fmt->Bshift == 0 ? 0 : \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	135 fmt->Bshift == 8 ? 1 : \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	136 fmt->Bshift == 16 ? 2 : \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	137 3 ); \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	138 }
1502 b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	139 #else
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	140 #define SET_OFFSETS_24(or, og, ob, fmt) \
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	141 { \
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	142 or = (fmt->Rshift == 0 ? 2 : \
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	143 fmt->Rshift == 8 ? 1 : \
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	144 0 ); \
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	145 og = (fmt->Gshift == 0 ? 2 : \
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	146 fmt->Gshift == 8 ? 1 : \
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	147 0 ); \
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	148 ob = (fmt->Bshift == 0 ? 2 : \
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	149 fmt->Bshift == 8 ? 1 : \
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	150 0 ); \
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	151 }
1514 eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	152
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	153 #define SET_OFFSETS_32(or, og, ob, fmt) \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	154 { \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	155 or = (fmt->Rshift == 0 ? 3 : \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	156 fmt->Rshift == 8 ? 2 : \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	157 fmt->Rshift == 16 ? 1 : \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	158 0 ); \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	159 og = (fmt->Gshift == 0 ? 3 : \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	160 fmt->Gshift == 8 ? 2 : \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	161 fmt->Gshift == 16 ? 1 : \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	162 0 ); \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	163 ob = (fmt->Bshift == 0 ? 3 : \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	164 fmt->Bshift == 8 ? 2 : \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	165 fmt->Bshift == 16 ? 1 : \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	166 0 ); \
eb0a75be1765 fix bug involving blit blends and 32 bit surfaces having non-standard masks Lenard Lindstrom <len-l@telus.net> parents: 1511 diff changeset	167 }
1502 b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	168 #endif
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	169
b3dab2110999 BLEND_xxx blit options tested and bugs fixed Lenard Lindstrom <len-l@telus.net> parents: 1315 diff changeset	170
820 dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	171 #define CREATE_PIXEL(buf, r, g, b, a, bp, ft) \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	172 switch (bp) \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	173 { \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	174 case 2: \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	175 ((Uint16 ) (buf)) = \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	176 ((r >> ft->Rloss) << ft->Rshift) \| \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	177 ((g >> ft->Gloss) << ft->Gshift) \| \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	178 ((b >> ft->Bloss) << ft->Bshift) \| \
1315 baa6043f0695 fixing CREATE_PIXEL macro, it made no-alpha surfaces get filled with green brian parents: 1296 diff changeset	179 ((a >> ft->Aloss) << ft->Ashift); \
820 dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	180 break; \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	181 case 4: \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	182 ((Uint32 ) (buf)) = \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	183 ((r >> ft->Rloss) << ft->Rshift) \| \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	184 ((g >> ft->Gloss) << ft->Gshift) \| \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	185 ((b >> ft->Bloss) << ft->Bshift) \| \
1315 baa6043f0695 fixing CREATE_PIXEL macro, it made no-alpha surfaces get filled with green brian parents: 1296 diff changeset	186 ((a >> ft->Aloss) << ft->Ashift); \
820 dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	187 break; \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	188 }
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	189
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	190 /* Pretty good idea from Tom Duff :-). */
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	191 #define LOOP_UNROLLED4(code, n, width) \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	192 n = (width + 3) / 4; \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	193 switch (width & 3) \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	194 { \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	195 case 0: do { code; \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	196 case 3: code; \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	197 case 2: code; \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	198 case 1: code; \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	199 } while (--n > 0); \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	200 }
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	201
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	202 /* Used in the srcbpp == dstbpp == 1 blend functions */
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	203 #define REPEAT_3(code) \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	204 code; \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	205 code; \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	206 code;
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	207
1142 befac1186c08 some fixes for BLEND_RGBA_* Rene Dudfield <renesd@gmail.com> parents: 1141 diff changeset	208 #define REPEAT_4(code) \
befac1186c08 some fixes for BLEND_RGBA_* Rene Dudfield <renesd@gmail.com> parents: 1141 diff changeset	209 code; \
befac1186c08 some fixes for BLEND_RGBA_* Rene Dudfield <renesd@gmail.com> parents: 1141 diff changeset	210 code; \
befac1186c08 some fixes for BLEND_RGBA_* Rene Dudfield <renesd@gmail.com> parents: 1141 diff changeset	211 code; \
befac1186c08 some fixes for BLEND_RGBA_* Rene Dudfield <renesd@gmail.com> parents: 1141 diff changeset	212 code;
1141 99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	213
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	214
1026 91bc7cc45d99 BLEND_* now take alpha into account marcus parents: 985 diff changeset	215 #define BLEND_ADD(tmp, sR, sG, sB, sA, dR, dG, dB, dA) \
820 dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	216 tmp = dR + sR; dR = (tmp <= 255 ? tmp : 255); \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	217 tmp = dG + sG; dG = (tmp <= 255 ? tmp : 255); \
1034 9b607773c79f Reverted BLEND_* behaviour to use only RGB values. marcus parents: 1026 diff changeset	218 tmp = dB + sB; dB = (tmp <= 255 ? tmp : 255);
820 dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	219
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	220 #define BLEND_SUB(tmp, sR, sG, sB, sA, dR, dG, dB, dA) \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	221 tmp = dR - sR; dR = (tmp >= 0 ? tmp : 0); \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	222 tmp = dG - sG; dG = (tmp >= 0 ? tmp : 0); \
1034 9b607773c79f Reverted BLEND_* behaviour to use only RGB values. marcus parents: 1026 diff changeset	223 tmp = dB - sB; dB = (tmp >= 0 ? tmp : 0);
820 dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	224
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	225 #define BLEND_MULT(sR, sG, sB, sA, dR, dG, dB, dA) \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	226 dR = (dR && sR) ? (dR * sR) >> 8 : 0; \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	227 dG = (dG && sG) ? (dG * sG) >> 8 : 0; \
1034 9b607773c79f Reverted BLEND_* behaviour to use only RGB values. marcus parents: 1026 diff changeset	228 dB = (dB && sB) ? (dB * sB) >> 8 : 0;
820 dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	229
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	230 #define BLEND_MIN(sR, sG, sB, sA, dR, dG, dB, dA) \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	231 if(sR < dR) { dR = sR; } \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	232 if(sG < dG) { dG = sG; } \
1034 9b607773c79f Reverted BLEND_* behaviour to use only RGB values. marcus parents: 1026 diff changeset	233 if(sB < dB) { dB = sB; }
820 dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	234
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	235 #define BLEND_MAX(sR, sG, sB, sA, dR, dG, dB, dA) \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	236 if(sR > dR) { dR = sR; } \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	237 if(sG > dG) { dG = sG; } \
1034 9b607773c79f Reverted BLEND_* behaviour to use only RGB values. marcus parents: 1026 diff changeset	238 if(sB > dB) { dB = sB; }
820 dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	239
1141 99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	240
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	241
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	242
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	243
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	244
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	245 #define BLEND_RGBA_ADD(tmp, sR, sG, sB, sA, dR, dG, dB, dA) \
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	246 tmp = dR + sR; dR = (tmp <= 255 ? tmp : 255); \
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	247 tmp = dG + sG; dG = (tmp <= 255 ? tmp : 255); \
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	248 tmp = dB + sB; dB = (tmp <= 255 ? tmp : 255); \
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	249 tmp = dA + sA; dA = (tmp <= 255 ? tmp : 255);
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	250
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	251 #define BLEND_RGBA_SUB(tmp, sR, sG, sB, sA, dR, dG, dB, dA) \
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	252 tmp = dR - sR; dR = (tmp >= 0 ? tmp : 0); \
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	253 tmp = dG - sG; dG = (tmp >= 0 ? tmp : 0); \
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	254 tmp = dB - sB; dB = (tmp >= 0 ? tmp : 0); \
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	255 tmp = dA - sA; dA = (tmp >= 0 ? tmp : 0);
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	256
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	257 #define BLEND_RGBA_MULT(sR, sG, sB, sA, dR, dG, dB, dA) \
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	258 dR = (dR && sR) ? (dR * sR) >> 8 : 0; \
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	259 dG = (dG && sG) ? (dG * sG) >> 8 : 0; \
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	260 dB = (dB && sB) ? (dB * sB) >> 8 : 0; \
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	261 dA = (dA && sA) ? (dA * sA) >> 8 : 0;
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	262
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	263 #define BLEND_RGBA_MIN(sR, sG, sB, sA, dR, dG, dB, dA) \
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	264 if(sR < dR) { dR = sR; } \
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	265 if(sG < dG) { dG = sG; } \
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	266 if(sB < dB) { dB = sB; } \
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	267 if(sA < dA) { dA = sA; }
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	268
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	269 #define BLEND_RGBA_MAX(sR, sG, sB, sA, dR, dG, dB, dA) \
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	270 if(sR > dR) { dR = sR; } \
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	271 if(sG > dG) { dG = sG; } \
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	272 if(sB > dB) { dB = sB; } \
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	273 if(sA > dA) { dA = sA; }
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	274
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	275
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	276
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	277
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	278
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	279
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	280
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	281
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	282
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	283
99a96e8e563d Added BLEND_RGBA_* special flags for blit, and fill. Rene Dudfield <renesd@gmail.com> parents: 1034 diff changeset	284
820 dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	285 #if 1
1296 2ef1988f57d3 alpha blit bug where source elements are decremented by 1 Lenard Lindstrom <len-l@telus.net> parents: 1142 diff changeset	286 /* Choose an alpha blend equation. If the sign is preserved on a right shift
2ef1988f57d3 alpha blit bug where source elements are decremented by 1 Lenard Lindstrom <len-l@telus.net> parents: 1142 diff changeset	287 * then use a specialized, faster, equation. Otherwise a more general form,
2ef1988f57d3 alpha blit bug where source elements are decremented by 1 Lenard Lindstrom <len-l@telus.net> parents: 1142 diff changeset	288 * where all additions are done before the shift, is needed.
2ef1988f57d3 alpha blit bug where source elements are decremented by 1 Lenard Lindstrom <len-l@telus.net> parents: 1142 diff changeset	289 */
2ef1988f57d3 alpha blit bug where source elements are decremented by 1 Lenard Lindstrom <len-l@telus.net> parents: 1142 diff changeset	290 #if (-1 >> 1) < 0
1511 1403c372c528 fix erroneous ALPHA_BLEND macro argument Lenard Lindstrom <len-l@telus.net> parents: 1505 diff changeset	291 #define ALPHA_BLEND_COMP(sC, dC, sA) ((((sC - dC) * sA + sC) >> 8) + dC)
1296 2ef1988f57d3 alpha blit bug where source elements are decremented by 1 Lenard Lindstrom <len-l@telus.net> parents: 1142 diff changeset	292 #else
1511 1403c372c528 fix erroneous ALPHA_BLEND macro argument Lenard Lindstrom <len-l@telus.net> parents: 1505 diff changeset	293 #define ALPHA_BLEND_COMP(sC, dC, sA) (((dC << 8) + (sC - dC) * sA + sC) >> 8)
1296 2ef1988f57d3 alpha blit bug where source elements are decremented by 1 Lenard Lindstrom <len-l@telus.net> parents: 1142 diff changeset	294 #endif
2ef1988f57d3 alpha blit bug where source elements are decremented by 1 Lenard Lindstrom <len-l@telus.net> parents: 1142 diff changeset	295
820 dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	296 #define ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB, dA) \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	297 do { \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	298 if (dA) \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	299 { \
1511 1403c372c528 fix erroneous ALPHA_BLEND macro argument Lenard Lindstrom <len-l@telus.net> parents: 1505 diff changeset	300 dR = ALPHA_BLEND_COMP(sR, dR, sA); \
1403c372c528 fix erroneous ALPHA_BLEND macro argument Lenard Lindstrom <len-l@telus.net> parents: 1505 diff changeset	301 dG = ALPHA_BLEND_COMP(sG, dG, sA); \
1403c372c528 fix erroneous ALPHA_BLEND macro argument Lenard Lindstrom <len-l@telus.net> parents: 1505 diff changeset	302 dB = ALPHA_BLEND_COMP(sB, dB, sA); \
820 dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	303 dA = sA + dA - ((sA * dA) / 255); \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	304 } \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	305 else \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	306 { \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	307 dR = sR; \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	308 dG = sG; \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	309 dB = sB; \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	310 dA = sA; \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	311 } \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	312 } while(0)
3095 549f3fb44e55 Add support for premultiplied alpha, necessary for integration with Cairo. David Turner <novalis@novalis.org> parents: 2075 diff changeset	313
549f3fb44e55 Add support for premultiplied alpha, necessary for integration with Cairo. David Turner <novalis@novalis.org> parents: 2075 diff changeset	314 #define ALPHA_BLEND_PREMULTIPLIED_COMP(sC, dC, sA) (sC + dC - ((dC * sA) >> 8))
549f3fb44e55 Add support for premultiplied alpha, necessary for integration with Cairo. David Turner <novalis@novalis.org> parents: 2075 diff changeset	315
549f3fb44e55 Add support for premultiplied alpha, necessary for integration with Cairo. David Turner <novalis@novalis.org> parents: 2075 diff changeset	316 #define ALPHA_BLEND_PREMULTIPLIED(tmp, sR, sG, sB, sA, dR, dG, dB, dA) \
549f3fb44e55 Add support for premultiplied alpha, necessary for integration with Cairo. David Turner <novalis@novalis.org> parents: 2075 diff changeset	317 do { \
549f3fb44e55 Add support for premultiplied alpha, necessary for integration with Cairo. David Turner <novalis@novalis.org> parents: 2075 diff changeset	318 tmp = ALPHA_BLEND_PREMULTIPLIED_COMP(sR, dR, sA); dR = (tmp > 255 ? 255 : tmp); \
549f3fb44e55 Add support for premultiplied alpha, necessary for integration with Cairo. David Turner <novalis@novalis.org> parents: 2075 diff changeset	319 tmp = ALPHA_BLEND_PREMULTIPLIED_COMP(sG, dG, sA); dG = (tmp > 255 ? 255 : tmp); \
549f3fb44e55 Add support for premultiplied alpha, necessary for integration with Cairo. David Turner <novalis@novalis.org> parents: 2075 diff changeset	320 tmp = ALPHA_BLEND_PREMULTIPLIED_COMP(sB, dB, sA); dB = (tmp > 255 ? 255 : tmp); \
549f3fb44e55 Add support for premultiplied alpha, necessary for integration with Cairo. David Turner <novalis@novalis.org> parents: 2075 diff changeset	321 dA = sA + dA - ((sA * dA) / 255); \
549f3fb44e55 Add support for premultiplied alpha, necessary for integration with Cairo. David Turner <novalis@novalis.org> parents: 2075 diff changeset	322 } while(0)
820 dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	323 #elif 0
3095 549f3fb44e55 Add support for premultiplied alpha, necessary for integration with Cairo. David Turner <novalis@novalis.org> parents: 2075 diff changeset	324
820 dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	325 #define ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB, dA) \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	326 do { \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	327 if(sA){ \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	328 if(dA && sA < 255){ \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	329 int dContrib = dA*(255 - sA)/255; \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	330 dA = sA+dA - ((sA*dA)/255); \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	331 dR = (dRdContrib + sRsA)/dA; \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	332 dG = (dGdContrib + sGsA)/dA; \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	333 dB = (dBdContrib + sBsA)/dA; \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	334 }else{ \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	335 dR = sR; \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	336 dG = sG; \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	337 dB = sB; \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	338 dA = sA; \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	339 } \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	340 } \
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	341 } while(0)
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	342 #endif
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	343
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	344 int
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	345 surface_fill_blend (SDL_Surface surface, SDL_Rect rect, Uint32 color,
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	346 int blendargs);
3122 55d7ab7a344f Surface.fill() respects clipping rect or surface bounds with special flags. Rene Dudfield <renesd@gmail.com> parents: 3095 diff changeset	347
55d7ab7a344f Surface.fill() respects clipping rect or surface bounds with special flags. Rene Dudfield <renesd@gmail.com> parents: 3095 diff changeset	348 void
55d7ab7a344f Surface.fill() respects clipping rect or surface bounds with special flags. Rene Dudfield <renesd@gmail.com> parents: 3095 diff changeset	349 surface_respect_clip_rect (SDL_Surface surface, SDL_Rect rect);
820 dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	350
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	351 int
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	352 pygame_AlphaBlit (SDL_Surface * src, SDL_Rect * srcrect,
1142 befac1186c08 some fixes for BLEND_RGBA_* Rene Dudfield <renesd@gmail.com> parents: 1141 diff changeset	353 SDL_Surface * dst, SDL_Rect * dstrect, int the_args);
820 dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	354
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	355 int
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	356 pygame_Blit (SDL_Surface * src, SDL_Rect * srcrect,
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	357 SDL_Surface * dst, SDL_Rect * dstrect, int the_args);
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	358
dbac3b5adc99 from the changes marcus made Rene Dudfield <renesd@gmail.com> parents: diff changeset	359 #endif /* SURFACE_H */

Mercurial > pygame

annotate src/surface.h @ 3194:9fcb7abf3185 default tip