sdl-ios-xcode: src/video/SDL

annotate src/video/SDL_blit.h @ 2318:0c653886cce7

HandleEvent() returns done each time it is called. If done was set to 0 the program should quit, but because done is not checked until *all* events are handled a following event can reset done to 1 and prevent the program from terminating when told to. I fixed the while loop that handles events to check for the state of done after handling each event. That could leave some events unhandled when the program exits, but it ensures that the program will exit.

author	Bob Pendleton <bob@pendleton.com>
date	Wed, 20 Feb 2008 23:27:33 +0000
parents	c785543d1843
children	4dba7aa7ea77

rev	line source
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1 /*
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	2 SDL - Simple DirectMedia Layer
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 1162 diff changeset	3 Copyright (C) 1997-2006 Sam Lantinga
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	4
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	5 This library is free software; you can redistribute it and/or
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 1162 diff changeset	6 modify it under the terms of the GNU Lesser General Public
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	7 License as published by the Free Software Foundation; either
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 1162 diff changeset	8 version 2.1 of the License, or (at your option) any later version.
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	9
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	10 This library is distributed in the hope that it will be useful,
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	11 but WITHOUT ANY WARRANTY; without even the implied warranty of
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 1162 diff changeset	13 Lesser General Public License for more details.
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	14
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 1162 diff changeset	15 You should have received a copy of the GNU Lesser General Public
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 1162 diff changeset	16 License along with this library; if not, write to the Free Software
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 1162 diff changeset	17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	18
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	19 Sam Lantinga
252 e8157fcb3114 Updated the source with the correct e-mail address Sam Lantinga <slouken@libsdl.org> parents: 163 diff changeset	20 slouken@libsdl.org
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	21 */
1402 d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1312 diff changeset	22 #include "SDL_config.h"
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	23
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	24 #ifndef _SDL_blit_h
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	25 #define _SDL_blit_h
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	26
2249 5a58b57b6724 Added SSE and MMX optimization for SDL_FillRect() Sam Lantinga <slouken@libsdl.org> parents: 2247 diff changeset	27 #ifdef __MMX__
5a58b57b6724 Added SSE and MMX optimization for SDL_FillRect() Sam Lantinga <slouken@libsdl.org> parents: 2247 diff changeset	28 #include <mmintrin.h>
5a58b57b6724 Added SSE and MMX optimization for SDL_FillRect() Sam Lantinga <slouken@libsdl.org> parents: 2247 diff changeset	29 #endif
2261 c20476d7d7b3 Enabled 3DNow! intrinsic support Sam Lantinga <slouken@libsdl.org> parents: 2260 diff changeset	30 #ifdef __3dNOW__
c20476d7d7b3 Enabled 3DNow! intrinsic support Sam Lantinga <slouken@libsdl.org> parents: 2260 diff changeset	31 #include <mm3dnow.h>
c20476d7d7b3 Enabled 3DNow! intrinsic support Sam Lantinga <slouken@libsdl.org> parents: 2260 diff changeset	32 #endif
2249 5a58b57b6724 Added SSE and MMX optimization for SDL_FillRect() Sam Lantinga <slouken@libsdl.org> parents: 2247 diff changeset	33 #ifdef __SSE__
5a58b57b6724 Added SSE and MMX optimization for SDL_FillRect() Sam Lantinga <slouken@libsdl.org> parents: 2247 diff changeset	34 #include <xmmintrin.h>
5a58b57b6724 Added SSE and MMX optimization for SDL_FillRect() Sam Lantinga <slouken@libsdl.org> parents: 2247 diff changeset	35 #endif
2262 bee005ace1bf Work in progress: merging new texture features into SDL blit system Sam Lantinga <slouken@libsdl.org> parents: 2261 diff changeset	36 #ifdef __SSE2__
bee005ace1bf Work in progress: merging new texture features into SDL blit system Sam Lantinga <slouken@libsdl.org> parents: 2261 diff changeset	37 #include <emmintrin.h>
bee005ace1bf Work in progress: merging new texture features into SDL blit system Sam Lantinga <slouken@libsdl.org> parents: 2261 diff changeset	38 #endif
2249 5a58b57b6724 Added SSE and MMX optimization for SDL_FillRect() Sam Lantinga <slouken@libsdl.org> parents: 2247 diff changeset	39
2250 e1d228456537 Fixed a few compiler warnings. Sam Lantinga <slouken@libsdl.org> parents: 2249 diff changeset	40 #include "SDL_cpuinfo.h"
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	41 #include "SDL_endian.h"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	42
2262 bee005ace1bf Work in progress: merging new texture features into SDL blit system Sam Lantinga <slouken@libsdl.org> parents: 2261 diff changeset	43 /* SDL blit copy flags */
2266 e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API Sam Lantinga <slouken@libsdl.org> parents: 2263 diff changeset	44 #define SDL_COPY_MODULATE_COLOR 0x00000001
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API Sam Lantinga <slouken@libsdl.org> parents: 2263 diff changeset	45 #define SDL_COPY_MODULATE_ALPHA 0x00000002
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API Sam Lantinga <slouken@libsdl.org> parents: 2263 diff changeset	46 #define SDL_COPY_MASK 0x00000010
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API Sam Lantinga <slouken@libsdl.org> parents: 2263 diff changeset	47 #define SDL_COPY_BLEND 0x00000020
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API Sam Lantinga <slouken@libsdl.org> parents: 2263 diff changeset	48 #define SDL_COPY_ADD 0x00000040
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API Sam Lantinga <slouken@libsdl.org> parents: 2263 diff changeset	49 #define SDL_COPY_MOD 0x00000080
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API Sam Lantinga <slouken@libsdl.org> parents: 2263 diff changeset	50 #define SDL_COPY_COLORKEY 0x00000100
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API Sam Lantinga <slouken@libsdl.org> parents: 2263 diff changeset	51 #define SDL_COPY_NEAREST 0x00000200
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API Sam Lantinga <slouken@libsdl.org> parents: 2263 diff changeset	52 #define SDL_COPY_RLE_DESIRED 0x00001000
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API Sam Lantinga <slouken@libsdl.org> parents: 2263 diff changeset	53 #define SDL_COPY_RLE_COLORKEY 0x00002000
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API Sam Lantinga <slouken@libsdl.org> parents: 2263 diff changeset	54 #define SDL_COPY_RLE_ALPHAKEY 0x00004000
2262 bee005ace1bf Work in progress: merging new texture features into SDL blit system Sam Lantinga <slouken@libsdl.org> parents: 2261 diff changeset	55
bee005ace1bf Work in progress: merging new texture features into SDL blit system Sam Lantinga <slouken@libsdl.org> parents: 2261 diff changeset	56 /* SDL blit CPU flags */
2266 e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API Sam Lantinga <slouken@libsdl.org> parents: 2263 diff changeset	57 #define SDL_CPU_ANY 0x00000000
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API Sam Lantinga <slouken@libsdl.org> parents: 2263 diff changeset	58 #define SDL_CPU_MMX 0x00000001
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API Sam Lantinga <slouken@libsdl.org> parents: 2263 diff changeset	59 #define SDL_CPU_3DNOW 0x00000002
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API Sam Lantinga <slouken@libsdl.org> parents: 2263 diff changeset	60 #define SDL_CPU_SSE 0x00000004
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API Sam Lantinga <slouken@libsdl.org> parents: 2263 diff changeset	61 #define SDL_CPU_SSE2 0x00000008
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API Sam Lantinga <slouken@libsdl.org> parents: 2263 diff changeset	62 #define SDL_CPU_ALTIVEC_PREFETCH 0x00000010
e61ad15a205f More work in progress integrating SDL_Surface and the new SDL_Texture API Sam Lantinga <slouken@libsdl.org> parents: 2263 diff changeset	63 #define SDL_CPU_ALTIVEC_NOPREFETCH 0x00000020
2262 bee005ace1bf Work in progress: merging new texture features into SDL blit system Sam Lantinga <slouken@libsdl.org> parents: 2261 diff changeset	64
2267 c785543d1843 Okay, still some bugs, but everything builds again... Sam Lantinga <slouken@libsdl.org> parents: 2266 diff changeset	65 typedef struct
c785543d1843 Okay, still some bugs, but everything builds again... Sam Lantinga <slouken@libsdl.org> parents: 2266 diff changeset	66 {
2262 bee005ace1bf Work in progress: merging new texture features into SDL blit system Sam Lantinga <slouken@libsdl.org> parents: 2261 diff changeset	67 Uint8 *src;
bee005ace1bf Work in progress: merging new texture features into SDL blit system Sam Lantinga <slouken@libsdl.org> parents: 2261 diff changeset	68 int src_w, src_h;
bee005ace1bf Work in progress: merging new texture features into SDL blit system Sam Lantinga <slouken@libsdl.org> parents: 2261 diff changeset	69 int src_pitch;
2267 c785543d1843 Okay, still some bugs, but everything builds again... Sam Lantinga <slouken@libsdl.org> parents: 2266 diff changeset	70 int src_skip;
2262 bee005ace1bf Work in progress: merging new texture features into SDL blit system Sam Lantinga <slouken@libsdl.org> parents: 2261 diff changeset	71 Uint8 *dst;
bee005ace1bf Work in progress: merging new texture features into SDL blit system Sam Lantinga <slouken@libsdl.org> parents: 2261 diff changeset	72 int dst_w, dst_h;
bee005ace1bf Work in progress: merging new texture features into SDL blit system Sam Lantinga <slouken@libsdl.org> parents: 2261 diff changeset	73 int dst_pitch;
2267 c785543d1843 Okay, still some bugs, but everything builds again... Sam Lantinga <slouken@libsdl.org> parents: 2266 diff changeset	74 int dst_skip;
2262 bee005ace1bf Work in progress: merging new texture features into SDL blit system Sam Lantinga <slouken@libsdl.org> parents: 2261 diff changeset	75 SDL_PixelFormat *src_fmt;
bee005ace1bf Work in progress: merging new texture features into SDL blit system Sam Lantinga <slouken@libsdl.org> parents: 2261 diff changeset	76 SDL_PixelFormat *dst_fmt;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	77 Uint8 *table;
2262 bee005ace1bf Work in progress: merging new texture features into SDL blit system Sam Lantinga <slouken@libsdl.org> parents: 2261 diff changeset	78 int flags;
bee005ace1bf Work in progress: merging new texture features into SDL blit system Sam Lantinga <slouken@libsdl.org> parents: 2261 diff changeset	79 Uint32 colorkey;
bee005ace1bf Work in progress: merging new texture features into SDL blit system Sam Lantinga <slouken@libsdl.org> parents: 2261 diff changeset	80 Uint8 r, g, b, a;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	81 } SDL_BlitInfo;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	82
2267 c785543d1843 Okay, still some bugs, but everything builds again... Sam Lantinga <slouken@libsdl.org> parents: 2266 diff changeset	83 typedef void (SDLCALL * SDL_BlitFunc) (SDL_BlitInfo * info);
2262 bee005ace1bf Work in progress: merging new texture features into SDL blit system Sam Lantinga <slouken@libsdl.org> parents: 2261 diff changeset	84
2267 c785543d1843 Okay, still some bugs, but everything builds again... Sam Lantinga <slouken@libsdl.org> parents: 2266 diff changeset	85 typedef struct
c785543d1843 Okay, still some bugs, but everything builds again... Sam Lantinga <slouken@libsdl.org> parents: 2266 diff changeset	86 {
2262 bee005ace1bf Work in progress: merging new texture features into SDL blit system Sam Lantinga <slouken@libsdl.org> parents: 2261 diff changeset	87 Uint32 src_format;
bee005ace1bf Work in progress: merging new texture features into SDL blit system Sam Lantinga <slouken@libsdl.org> parents: 2261 diff changeset	88 Uint32 dst_format;
bee005ace1bf Work in progress: merging new texture features into SDL blit system Sam Lantinga <slouken@libsdl.org> parents: 2261 diff changeset	89 int flags;
bee005ace1bf Work in progress: merging new texture features into SDL blit system Sam Lantinga <slouken@libsdl.org> parents: 2261 diff changeset	90 int cpu;
bee005ace1bf Work in progress: merging new texture features into SDL blit system Sam Lantinga <slouken@libsdl.org> parents: 2261 diff changeset	91 SDL_BlitFunc func;
bee005ace1bf Work in progress: merging new texture features into SDL blit system Sam Lantinga <slouken@libsdl.org> parents: 2261 diff changeset	92 } SDL_BlitFuncEntry;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	93
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	94 /* Blit mapping definition */
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	95 typedef struct SDL_BlitMap
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	96 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	97 SDL_Surface *dst;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	98 int identity;
2257 340942cfda48 Moved the colorkey and per-surface alpha into the blit info, Sam Lantinga <slouken@libsdl.org> parents: 2251 diff changeset	99 SDL_blit blit;
340942cfda48 Moved the colorkey and per-surface alpha into the blit info, Sam Lantinga <slouken@libsdl.org> parents: 2251 diff changeset	100 void *data;
2262 bee005ace1bf Work in progress: merging new texture features into SDL blit system Sam Lantinga <slouken@libsdl.org> parents: 2261 diff changeset	101 SDL_BlitInfo info;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	102
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	103 /* the version count matches the destination; mismatch indicates
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	104 an invalid mapping */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	105 unsigned int format_version;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	106 } SDL_BlitMap;
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	107
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	108 /* Functions found in SDL_blit.c */
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	109 extern int SDL_CalculateBlit(SDL_Surface * surface);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	110
2267 c785543d1843 Okay, still some bugs, but everything builds again... Sam Lantinga <slouken@libsdl.org> parents: 2266 diff changeset	111 /* Functions found in SDL_blit_.c /
c785543d1843 Okay, still some bugs, but everything builds again... Sam Lantinga <slouken@libsdl.org> parents: 2266 diff changeset	112 extern SDL_BlitFunc SDL_CalculateBlit0(SDL_Surface * surface);
c785543d1843 Okay, still some bugs, but everything builds again... Sam Lantinga <slouken@libsdl.org> parents: 2266 diff changeset	113 extern SDL_BlitFunc SDL_CalculateBlit1(SDL_Surface * surface);
c785543d1843 Okay, still some bugs, but everything builds again... Sam Lantinga <slouken@libsdl.org> parents: 2266 diff changeset	114 extern SDL_BlitFunc SDL_CalculateBlitN(SDL_Surface * surface);
c785543d1843 Okay, still some bugs, but everything builds again... Sam Lantinga <slouken@libsdl.org> parents: 2266 diff changeset	115 extern SDL_BlitFunc SDL_CalculateBlitA(SDL_Surface * surface);
2263 900c35d8e8fd More work in progress, still doesn't compile... Sam Lantinga <slouken@libsdl.org> parents: 2262 diff changeset	116
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	117 /*
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	118 * Useful macros for blitting routines
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	119 */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	120
2249 5a58b57b6724 Added SSE and MMX optimization for SDL_FillRect() Sam Lantinga <slouken@libsdl.org> parents: 2247 diff changeset	121 #if defined(__GNUC__)
5a58b57b6724 Added SSE and MMX optimization for SDL_FillRect() Sam Lantinga <slouken@libsdl.org> parents: 2247 diff changeset	122 #define DECLARE_ALIGNED(t,v,a) t __attribute__((aligned(a))) v
5a58b57b6724 Added SSE and MMX optimization for SDL_FillRect() Sam Lantinga <slouken@libsdl.org> parents: 2247 diff changeset	123 #elif defined(_MSC_VER)
2251 292bee385630 SSE and MMX intrinsics work with Visual Studio now... Sam Lantinga <slouken@libsdl.org> parents: 2250 diff changeset	124 #define DECLARE_ALIGNED(t,v,a) __declspec(align(a)) t v
2249 5a58b57b6724 Added SSE and MMX optimization for SDL_FillRect() Sam Lantinga <slouken@libsdl.org> parents: 2247 diff changeset	125 #else
5a58b57b6724 Added SSE and MMX optimization for SDL_FillRect() Sam Lantinga <slouken@libsdl.org> parents: 2247 diff changeset	126 #define DECLARE_ALIGNED(t,v,a) t v
5a58b57b6724 Added SSE and MMX optimization for SDL_FillRect() Sam Lantinga <slouken@libsdl.org> parents: 2247 diff changeset	127 #endif
5a58b57b6724 Added SSE and MMX optimization for SDL_FillRect() Sam Lantinga <slouken@libsdl.org> parents: 2247 diff changeset	128
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	129 #define FORMAT_EQUAL(A, B) \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	130 ((A)->BitsPerPixel == (B)->BitsPerPixel \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	131 && ((A)->Rmask == (B)->Rmask) && ((A)->Amask == (B)->Amask))
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	132
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	133 /* Load pixel of the specified format from a buffer and get its R-G-B values */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	134 /* FIXME: rescale values to 0..255 here? */
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	135 #define RGB_FROM_PIXEL(Pixel, fmt, r, g, b) \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	136 { \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	137 r = (((Pixel&fmt->Rmask)>>fmt->Rshift)<<fmt->Rloss); \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	138 g = (((Pixel&fmt->Gmask)>>fmt->Gshift)<<fmt->Gloss); \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	139 b = (((Pixel&fmt->Bmask)>>fmt->Bshift)<<fmt->Bloss); \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	140 }
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	141 #define RGB_FROM_RGB565(Pixel, r, g, b) \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	142 { \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	143 r = (((Pixel&0xF800)>>11)<<3); \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	144 g = (((Pixel&0x07E0)>>5)<<2); \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	145 b = ((Pixel&0x001F)<<3); \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	146 }
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	147 #define RGB_FROM_RGB555(Pixel, r, g, b) \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	148 { \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	149 r = (((Pixel&0x7C00)>>10)<<3); \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	150 g = (((Pixel&0x03E0)>>5)<<3); \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	151 b = ((Pixel&0x001F)<<3); \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	152 }
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	153 #define RGB_FROM_RGB888(Pixel, r, g, b) \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	154 { \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	155 r = ((Pixel&0xFF0000)>>16); \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	156 g = ((Pixel&0xFF00)>>8); \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	157 b = (Pixel&0xFF); \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	158 }
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	159 #define RETRIEVE_RGB_PIXEL(buf, bpp, Pixel) \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	160 do { \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	161 switch (bpp) { \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	162 case 2: \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	163 Pixel = ((Uint16 )(buf)); \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	164 break; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	165 \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	166 case 3: { \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	167 Uint8 B = (Uint8 )(buf); \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	168 if(SDL_BYTEORDER == SDL_LIL_ENDIAN) { \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	169 Pixel = B[0] + (B[1] << 8) + (B[2] << 16); \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	170 } else { \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	171 Pixel = (B[0] << 16) + (B[1] << 8) + B[2]; \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	172 } \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	173 } \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	174 break; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	175 \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	176 case 4: \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	177 Pixel = ((Uint32 )(buf)); \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	178 break; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	179 \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	180 default: \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	181 Pixel = 0; /* appease gcc */ \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	182 break; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	183 } \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	184 } while(0)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	185
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	186 #define DISEMBLE_RGB(buf, bpp, fmt, Pixel, r, g, b) \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	187 do { \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	188 switch (bpp) { \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	189 case 2: \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	190 Pixel = ((Uint16 )(buf)); \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	191 break; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	192 \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	193 case 3: { \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	194 Uint8 B = (Uint8 )buf; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	195 if(SDL_BYTEORDER == SDL_LIL_ENDIAN) { \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	196 Pixel = B[0] + (B[1] << 8) + (B[2] << 16); \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	197 } else { \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	198 Pixel = (B[0] << 16) + (B[1] << 8) + B[2]; \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	199 } \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	200 } \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	201 break; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	202 \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	203 case 4: \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	204 Pixel = ((Uint32 )(buf)); \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	205 break; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	206 \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	207 default: \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	208 Pixel = 0; /* prevent gcc from complaining */ \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	209 break; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	210 } \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	211 RGB_FROM_PIXEL(Pixel, fmt, r, g, b); \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	212 } while(0)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	213
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	214 /* Assemble R-G-B values into a specified pixel format and store them */
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	215 #define PIXEL_FROM_RGB(Pixel, fmt, r, g, b) \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	216 { \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	217 Pixel = ((r>>fmt->Rloss)<<fmt->Rshift)\| \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	218 ((g>>fmt->Gloss)<<fmt->Gshift)\| \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	219 ((b>>fmt->Bloss)<<fmt->Bshift); \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	220 }
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	221 #define RGB565_FROM_RGB(Pixel, r, g, b) \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	222 { \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	223 Pixel = ((r>>3)<<11)\|((g>>2)<<5)\|(b>>3); \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	224 }
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	225 #define RGB555_FROM_RGB(Pixel, r, g, b) \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	226 { \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	227 Pixel = ((r>>3)<<10)\|((g>>3)<<5)\|(b>>3); \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	228 }
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	229 #define RGB888_FROM_RGB(Pixel, r, g, b) \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	230 { \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	231 Pixel = (r<<16)\|(g<<8)\|b; \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	232 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	233 #define ASSEMBLE_RGB(buf, bpp, fmt, r, g, b) \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	234 { \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	235 switch (bpp) { \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	236 case 2: { \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	237 Uint16 Pixel; \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	238 \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	239 PIXEL_FROM_RGB(Pixel, fmt, r, g, b); \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	240 ((Uint16 )(buf)) = Pixel; \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	241 } \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	242 break; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	243 \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	244 case 3: { \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	245 if(SDL_BYTEORDER == SDL_LIL_ENDIAN) { \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	246 *((buf)+fmt->Rshift/8) = r; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	247 *((buf)+fmt->Gshift/8) = g; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	248 *((buf)+fmt->Bshift/8) = b; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	249 } else { \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	250 *((buf)+2-fmt->Rshift/8) = r; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	251 *((buf)+2-fmt->Gshift/8) = g; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	252 *((buf)+2-fmt->Bshift/8) = b; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	253 } \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	254 } \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	255 break; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	256 \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	257 case 4: { \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	258 Uint32 Pixel; \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	259 \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	260 PIXEL_FROM_RGB(Pixel, fmt, r, g, b); \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	261 ((Uint32 )(buf)) = Pixel; \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	262 } \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	263 break; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	264 } \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	265 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	266 #define ASSEMBLE_RGB_AMASK(buf, bpp, fmt, r, g, b, Amask) \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	267 { \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	268 switch (bpp) { \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	269 case 2: { \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	270 Uint16 *bufp; \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	271 Uint16 Pixel; \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	272 \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	273 bufp = (Uint16 *)buf; \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	274 PIXEL_FROM_RGB(Pixel, fmt, r, g, b); \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	275 bufp = Pixel \| (bufp & Amask); \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	276 } \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	277 break; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	278 \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	279 case 3: { \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	280 if(SDL_BYTEORDER == SDL_LIL_ENDIAN) { \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	281 *((buf)+fmt->Rshift/8) = r; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	282 *((buf)+fmt->Gshift/8) = g; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	283 *((buf)+fmt->Bshift/8) = b; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	284 } else { \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	285 *((buf)+2-fmt->Rshift/8) = r; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	286 *((buf)+2-fmt->Gshift/8) = g; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	287 *((buf)+2-fmt->Bshift/8) = b; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	288 } \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	289 } \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	290 break; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	291 \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	292 case 4: { \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	293 Uint32 *bufp; \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	294 Uint32 Pixel; \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	295 \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	296 bufp = (Uint32 *)buf; \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	297 PIXEL_FROM_RGB(Pixel, fmt, r, g, b); \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	298 bufp = Pixel \| (bufp & Amask); \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	299 } \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	300 break; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	301 } \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	302 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	303
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	304 /* FIXME: Should we rescale alpha into 0..255 here? */
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	305 #define RGBA_FROM_PIXEL(Pixel, fmt, r, g, b, a) \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	306 { \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	307 r = ((Pixel&fmt->Rmask)>>fmt->Rshift)<<fmt->Rloss; \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	308 g = ((Pixel&fmt->Gmask)>>fmt->Gshift)<<fmt->Gloss; \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	309 b = ((Pixel&fmt->Bmask)>>fmt->Bshift)<<fmt->Bloss; \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	310 a = ((Pixel&fmt->Amask)>>fmt->Ashift)<<fmt->Aloss; \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	311 }
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	312 #define RGBA_FROM_8888(Pixel, fmt, r, g, b, a) \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	313 { \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	314 r = (Pixel&fmt->Rmask)>>fmt->Rshift; \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	315 g = (Pixel&fmt->Gmask)>>fmt->Gshift; \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	316 b = (Pixel&fmt->Bmask)>>fmt->Bshift; \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	317 a = (Pixel&fmt->Amask)>>fmt->Ashift; \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	318 }
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	319 #define RGBA_FROM_RGBA8888(Pixel, r, g, b, a) \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	320 { \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	321 r = (Pixel>>24); \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	322 g = ((Pixel>>16)&0xFF); \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	323 b = ((Pixel>>8)&0xFF); \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	324 a = (Pixel&0xFF); \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	325 }
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	326 #define RGBA_FROM_ARGB8888(Pixel, r, g, b, a) \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	327 { \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	328 r = ((Pixel>>16)&0xFF); \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	329 g = ((Pixel>>8)&0xFF); \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	330 b = (Pixel&0xFF); \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	331 a = (Pixel>>24); \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	332 }
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	333 #define RGBA_FROM_ABGR8888(Pixel, r, g, b, a) \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	334 { \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	335 r = (Pixel&0xFF); \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	336 g = ((Pixel>>8)&0xFF); \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	337 b = ((Pixel>>16)&0xFF); \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	338 a = (Pixel>>24); \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	339 }
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	340 #define DISEMBLE_RGBA(buf, bpp, fmt, Pixel, r, g, b, a) \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	341 do { \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	342 switch (bpp) { \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	343 case 2: \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	344 Pixel = ((Uint16 )(buf)); \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	345 break; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	346 \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	347 case 3: {/* FIXME: broken code (no alpha) */ \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	348 Uint8 b = (Uint8 )buf; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	349 if(SDL_BYTEORDER == SDL_LIL_ENDIAN) { \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	350 Pixel = b[0] + (b[1] << 8) + (b[2] << 16); \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	351 } else { \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	352 Pixel = (b[0] << 16) + (b[1] << 8) + b[2]; \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	353 } \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	354 } \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	355 break; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	356 \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	357 case 4: \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	358 Pixel = ((Uint32 )(buf)); \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	359 break; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	360 \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	361 default: \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	362 Pixel = 0; /* stop gcc complaints */ \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	363 break; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	364 } \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	365 RGBA_FROM_PIXEL(Pixel, fmt, r, g, b, a); \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	366 Pixel &= ~fmt->Amask; \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	367 } while(0)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	368
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	369 /* FIXME: this isn't correct, especially for Alpha (maximum != 255) */
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	370 #define PIXEL_FROM_RGBA(Pixel, fmt, r, g, b, a) \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	371 { \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	372 Pixel = ((r>>fmt->Rloss)<<fmt->Rshift)\| \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	373 ((g>>fmt->Gloss)<<fmt->Gshift)\| \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	374 ((b>>fmt->Bloss)<<fmt->Bshift)\| \
535 917cc5c56176 Fixed alpha blending bug (thanks Glenn!) Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	375 ((a>>fmt->Aloss)<<fmt->Ashift); \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	376 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	377 #define ASSEMBLE_RGBA(buf, bpp, fmt, r, g, b, a) \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	378 { \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	379 switch (bpp) { \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	380 case 2: { \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	381 Uint16 Pixel; \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	382 \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	383 PIXEL_FROM_RGBA(Pixel, fmt, r, g, b, a); \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	384 ((Uint16 )(buf)) = Pixel; \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	385 } \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	386 break; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	387 \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	388 case 3: { /* FIXME: broken code (no alpha) */ \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	389 if(SDL_BYTEORDER == SDL_LIL_ENDIAN) { \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	390 *((buf)+fmt->Rshift/8) = r; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	391 *((buf)+fmt->Gshift/8) = g; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	392 *((buf)+fmt->Bshift/8) = b; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	393 } else { \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	394 *((buf)+2-fmt->Rshift/8) = r; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	395 *((buf)+2-fmt->Gshift/8) = g; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	396 *((buf)+2-fmt->Bshift/8) = b; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	397 } \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	398 } \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	399 break; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	400 \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	401 case 4: { \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	402 Uint32 Pixel; \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	403 \
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	404 PIXEL_FROM_RGBA(Pixel, fmt, r, g, b, a); \
2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	405 ((Uint32 )(buf)) = Pixel; \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	406 } \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	407 break; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	408 } \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	409 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	410
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	411 /* Blend the RGB values of two Pixels based on a source alpha value */
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	412 #define ALPHA_BLEND(sR, sG, sB, A, dR, dG, dB) \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	413 do { \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	414 dR = (((sR-dR)*(A))>>8)+dR; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	415 dG = (((sG-dG)*(A))>>8)+dG; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	416 dB = (((sB-dB)*(A))>>8)+dB; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	417 } while(0)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	418
1162 2651158f59b8 Enable altivec blitters on PowerPC Linux, and some fixes for recent Ryan C. Gordon <icculus@icculus.org> parents: 1047 diff changeset	419 /* Blend the RGB values of two Pixels based on a source alpha value */
1047 ffaaf7ecf685 Altivec-optimized blitters! Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	420 #define ACCURATE_ALPHA_BLEND(sR, sG, sB, sA, dR, dG, dB) \
ffaaf7ecf685 Altivec-optimized blitters! Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	421 do { \
ffaaf7ecf685 Altivec-optimized blitters! Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	422 unsigned tR, tG, tB, tA; \
ffaaf7ecf685 Altivec-optimized blitters! Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	423 tA = 255 - sA; \
ffaaf7ecf685 Altivec-optimized blitters! Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	424 tR = 1 + (sR * sA) + (dR * tA); \
ffaaf7ecf685 Altivec-optimized blitters! Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	425 dR = (tR + (tR >> 8)) >> 8; \
ffaaf7ecf685 Altivec-optimized blitters! Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	426 tG = 1 + (sG * sA) + (dG * tA); \
ffaaf7ecf685 Altivec-optimized blitters! Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	427 dG = (tG + (tG >> 8)) >> 8; \
ffaaf7ecf685 Altivec-optimized blitters! Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	428 tB = 1 + (sB * sA) + (dB * tA); \
ffaaf7ecf685 Altivec-optimized blitters! Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	429 dB = (tB + (tB >> 8)) >> 8; \
ffaaf7ecf685 Altivec-optimized blitters! Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	430 } while(0)
ffaaf7ecf685 Altivec-optimized blitters! Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	431
ffaaf7ecf685 Altivec-optimized blitters! Ryan C. Gordon <icculus@icculus.org> parents: 769 diff changeset	432
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	433 /* This is a very useful loop for optimizing blitters */
553 417f8709e648 There's a bug in the VC7 optimizer relating to the duff loop optimization Sam Lantinga <slouken@libsdl.org> parents: 535 diff changeset	434 #if defined(_MSC_VER) && (_MSC_VER == 1300)
417f8709e648 There's a bug in the VC7 optimizer relating to the duff loop optimization Sam Lantinga <slouken@libsdl.org> parents: 535 diff changeset	435 /* There's a bug in the Visual C++ 7 optimizer when compiling this code */
417f8709e648 There's a bug in the VC7 optimizer relating to the duff loop optimization Sam Lantinga <slouken@libsdl.org> parents: 535 diff changeset	436 #else
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	437 #define USE_DUFFS_LOOP
553 417f8709e648 There's a bug in the VC7 optimizer relating to the duff loop optimization Sam Lantinga <slouken@libsdl.org> parents: 535 diff changeset	438 #endif
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	439 #ifdef USE_DUFFS_LOOP
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	440
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	441 /* 8-times unrolled loop */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	442 #define DUFFS_LOOP8(pixel_copy_increment, width) \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	443 { int n = (width+7)/8; \
91 e85e03f195b4 From: "Markus F.X.J. Oberhumer" Sam Lantinga <slouken@lokigames.com> parents: 0 diff changeset	444 switch (width & 7) { \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	445 case 0: do { pixel_copy_increment; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	446 case 7: pixel_copy_increment; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	447 case 6: pixel_copy_increment; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	448 case 5: pixel_copy_increment; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	449 case 4: pixel_copy_increment; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	450 case 3: pixel_copy_increment; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	451 case 2: pixel_copy_increment; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	452 case 1: pixel_copy_increment; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	453 } while ( --n > 0 ); \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	454 } \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	455 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	456
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	457 /* 4-times unrolled loop */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	458 #define DUFFS_LOOP4(pixel_copy_increment, width) \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	459 { int n = (width+3)/4; \
91 e85e03f195b4 From: "Markus F.X.J. Oberhumer" Sam Lantinga <slouken@lokigames.com> parents: 0 diff changeset	460 switch (width & 3) { \
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	461 case 0: do { pixel_copy_increment; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	462 case 3: pixel_copy_increment; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	463 case 2: pixel_copy_increment; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	464 case 1: pixel_copy_increment; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	465 } while ( --n > 0 ); \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	466 } \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	467 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	468
689 5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	469 /* 2 - times unrolled loop */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	470 #define DUFFS_LOOP_DOUBLE2(pixel_copy_increment, \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	471 double_pixel_copy_increment, width) \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	472 { int n, w = width; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	473 if( w & 1 ) { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	474 pixel_copy_increment; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	475 w--; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	476 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	477 if ( w > 0 ) { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	478 n = ( w + 2) / 4; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	479 switch( w & 2 ) { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	480 case 0: do { double_pixel_copy_increment; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	481 case 2: double_pixel_copy_increment; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	482 } while ( --n > 0 ); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	483 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	484 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	485 }
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	486
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	487 /* 2 - times unrolled loop 4 pixels */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	488 #define DUFFS_LOOP_QUATRO2(pixel_copy_increment, \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	489 double_pixel_copy_increment, \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	490 quatro_pixel_copy_increment, width) \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	491 { int n, w = width; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	492 if(w & 1) { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	493 pixel_copy_increment; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	494 w--; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	495 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	496 if(w & 2) { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	497 double_pixel_copy_increment; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	498 w -= 2; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	499 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	500 if ( w > 0 ) { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	501 n = ( w + 7 ) / 8; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	502 switch( w & 4 ) { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	503 case 0: do { quatro_pixel_copy_increment; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	504 case 4: quatro_pixel_copy_increment; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	505 } while ( --n > 0 ); \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	506 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	507 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	508 }
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	509
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	510 /* Use the 8-times version of the loop by default */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	511 #define DUFFS_LOOP(pixel_copy_increment, width) \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	512 DUFFS_LOOP8(pixel_copy_increment, width)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	513
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	514 #else
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	515
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	516 /* Don't use Duff's device to unroll loops */
689 5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	517 #define DUFFS_LOOP_DOUBLE2(pixel_copy_increment, \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	518 double_pixel_copy_increment, width) \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	519 { int n = width; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	520 if( n & 1 ) { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	521 pixel_copy_increment; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	522 n--; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	523 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	524 n=n>>1; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	525 for(; n > 0; --n) { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	526 double_pixel_copy_increment; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	527 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	528 }
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	529
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	530 /* Don't use Duff's device to unroll loops */
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	531 #define DUFFS_LOOP_QUATRO2(pixel_copy_increment, \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	532 double_pixel_copy_increment, \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	533 quatro_pixel_copy_increment, width) \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	534 { int n = width; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	535 if(n & 1) { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	536 pixel_copy_increment; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	537 n--; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	538 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	539 if(n & 2) { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	540 double_pixel_copy_increment; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	541 n -= 2; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	542 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	543 n=n>>2; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	544 for(; n > 0; --n) { \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	545 quatro_pixel_copy_increment; \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	546 } \
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	547 }
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	548
5bb080d35049 Date: Tue, 19 Aug 2003 17:57:00 +0200 Sam Lantinga <slouken@libsdl.org> parents: 553 diff changeset	549 /* Don't use Duff's device to unroll loops */
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	550 #define DUFFS_LOOP(pixel_copy_increment, width) \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	551 { int n; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	552 for ( n=width; n > 0; --n ) { \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	553 pixel_copy_increment; \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	554 } \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	555 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	556 #define DUFFS_LOOP8(pixel_copy_increment, width) \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	557 DUFFS_LOOP(pixel_copy_increment, width)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	558 #define DUFFS_LOOP4(pixel_copy_increment, width) \
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	559 DUFFS_LOOP(pixel_copy_increment, width)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	560
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	561 #endif /* USE_DUFFS_LOOP */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	562
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	563 /* Prevent Visual C++ 6.0 from printing out stupid warnings */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	564 #if defined(_MSC_VER) && (_MSC_VER >= 600)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	565 #pragma warning(disable: 4550)
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	566 #endif
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	567
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	568 #endif /* _SDL_blit_h */
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	569 /* vi: set ts=4 sw=4 expandtab: */

Mercurial > sdl-ios-xcode

annotate src/video/SDL_blit.h @ 2318:0c653886cce7