Mercurial > sdl-ios-xcode
annotate src/video/SDL_blit.h @ 1861:b42823412c3b
Fixed bug #232
------- Comment #2 From Matthias Geissert 2006-05-24 07:54 [reply] -------
See http://dri.sourceforge.net/doc/DRIuserguide.html, section 11.5. There is
written that you need to use RTLD_GLOBAL, since, otherwise, nested open of
dynamic libraries doesn't work. However, This is necassary in this case, since
libGL opens the hardware-specific driver/library. I hope this helps you.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 20 Jun 2006 03:52:41 +0000 |
| parents | d910939febfa |
| children | 782fd950bd46 c121d94672cb 8582c6a5ca16 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 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 | 4 |
| 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 | 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 | 9 |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 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 | 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 | 18 |
| 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 | 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 | 23 |
| 24 #ifndef _SDL_blit_h | |
| 25 #define _SDL_blit_h | |
| 26 | |
| 27 #include "SDL_endian.h" | |
| 28 | |
| 29 /* The structure passed to the low level blit functions */ | |
| 30 typedef struct { | |
| 31 Uint8 *s_pixels; | |
| 32 int s_width; | |
| 33 int s_height; | |
| 34 int s_skip; | |
| 35 Uint8 *d_pixels; | |
| 36 int d_width; | |
| 37 int d_height; | |
| 38 int d_skip; | |
| 39 void *aux_data; | |
| 40 SDL_PixelFormat *src; | |
| 41 Uint8 *table; | |
| 42 SDL_PixelFormat *dst; | |
| 43 } SDL_BlitInfo; | |
| 44 | |
| 45 /* The type definition for the low level blit functions */ | |
| 46 typedef void (*SDL_loblit)(SDL_BlitInfo *info); | |
| 47 | |
| 48 /* This is the private info structure for software accelerated blits */ | |
| 49 struct private_swaccel { | |
| 50 SDL_loblit blit; | |
| 51 void *aux_data; | |
| 52 }; | |
| 53 | |
| 54 /* Blit mapping definition */ | |
| 55 typedef struct SDL_BlitMap { | |
| 56 SDL_Surface *dst; | |
| 57 int identity; | |
| 58 Uint8 *table; | |
| 59 SDL_blit hw_blit; | |
| 60 SDL_blit sw_blit; | |
| 61 struct private_hwaccel *hw_data; | |
| 62 struct private_swaccel *sw_data; | |
| 63 | |
| 64 /* the version count matches the destination; mismatch indicates | |
| 65 an invalid mapping */ | |
| 66 unsigned int format_version; | |
| 67 } SDL_BlitMap; | |
| 68 | |
| 69 | |
| 70 /* Functions found in SDL_blit.c */ | |
| 71 extern int SDL_CalculateBlit(SDL_Surface *surface); | |
| 72 | |
| 73 /* Functions found in SDL_blit_{0,1,N,A}.c */ | |
| 74 extern SDL_loblit SDL_CalculateBlit0(SDL_Surface *surface, int complex); | |
| 75 extern SDL_loblit SDL_CalculateBlit1(SDL_Surface *surface, int complex); | |
| 76 extern SDL_loblit SDL_CalculateBlitN(SDL_Surface *surface, int complex); | |
| 77 extern SDL_loblit SDL_CalculateAlphaBlit(SDL_Surface *surface, int complex); | |
| 78 | |
| 79 /* | |
| 80 * Useful macros for blitting routines | |
| 81 */ | |
| 82 | |
| 83 #define FORMAT_EQUAL(A, B) \ | |
| 84 ((A)->BitsPerPixel == (B)->BitsPerPixel \ | |
| 85 && ((A)->Rmask == (B)->Rmask) && ((A)->Amask == (B)->Amask)) | |
| 86 | |
| 87 /* Load pixel of the specified format from a buffer and get its R-G-B values */ | |
| 88 /* 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
|
89 #define RGB_FROM_PIXEL(Pixel, fmt, r, g, b) \ |
| 0 | 90 { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
91 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
|
92 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
|
93 b = (((Pixel&fmt->Bmask)>>fmt->Bshift)<<fmt->Bloss); \ |
| 0 | 94 } |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
95 #define RGB_FROM_RGB565(Pixel, r, g, b) \ |
| 0 | 96 { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
97 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
|
98 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
|
99 b = ((Pixel&0x001F)<<3); \ |
| 0 | 100 } |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
101 #define RGB_FROM_RGB555(Pixel, r, g, b) \ |
| 0 | 102 { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
103 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
|
104 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
|
105 b = ((Pixel&0x001F)<<3); \ |
| 0 | 106 } |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
107 #define RGB_FROM_RGB888(Pixel, r, g, b) \ |
| 0 | 108 { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
109 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
|
110 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
|
111 b = (Pixel&0xFF); \ |
| 0 | 112 } |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
113 #define RETRIEVE_RGB_PIXEL(buf, bpp, Pixel) \ |
| 0 | 114 do { \ |
| 115 switch (bpp) { \ | |
| 116 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
|
117 Pixel = *((Uint16 *)(buf)); \ |
| 0 | 118 break; \ |
| 119 \ | |
| 120 case 3: { \ | |
| 121 Uint8 *B = (Uint8 *)(buf); \ | |
| 122 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
|
123 Pixel = B[0] + (B[1] << 8) + (B[2] << 16); \ |
| 0 | 124 } else { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
125 Pixel = (B[0] << 16) + (B[1] << 8) + B[2]; \ |
| 0 | 126 } \ |
| 127 } \ | |
| 128 break; \ | |
| 129 \ | |
| 130 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
|
131 Pixel = *((Uint32 *)(buf)); \ |
| 0 | 132 break; \ |
| 133 \ | |
| 134 default: \ | |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
135 Pixel = 0; /* appease gcc */ \ |
| 0 | 136 break; \ |
| 137 } \ | |
| 138 } while(0) | |
| 139 | |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
140 #define DISEMBLE_RGB(buf, bpp, fmt, Pixel, r, g, b) \ |
| 0 | 141 do { \ |
| 142 switch (bpp) { \ | |
| 143 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
|
144 Pixel = *((Uint16 *)(buf)); \ |
| 0 | 145 break; \ |
| 146 \ | |
| 147 case 3: { \ | |
| 148 Uint8 *B = (Uint8 *)buf; \ | |
| 149 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
|
150 Pixel = B[0] + (B[1] << 8) + (B[2] << 16); \ |
| 0 | 151 } else { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
152 Pixel = (B[0] << 16) + (B[1] << 8) + B[2]; \ |
| 0 | 153 } \ |
| 154 } \ | |
| 155 break; \ | |
| 156 \ | |
| 157 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
|
158 Pixel = *((Uint32 *)(buf)); \ |
| 0 | 159 break; \ |
| 160 \ | |
| 161 default: \ | |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
162 Pixel = 0; /* prevent gcc from complaining */ \ |
| 0 | 163 break; \ |
| 164 } \ | |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
165 RGB_FROM_PIXEL(Pixel, fmt, r, g, b); \ |
| 0 | 166 } while(0) |
| 167 | |
| 168 /* 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
|
169 #define PIXEL_FROM_RGB(Pixel, fmt, r, g, b) \ |
| 0 | 170 { \ |
|
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 = ((r>>fmt->Rloss)<<fmt->Rshift)| \ |
| 0 | 172 ((g>>fmt->Gloss)<<fmt->Gshift)| \ |
| 173 ((b>>fmt->Bloss)<<fmt->Bshift); \ | |
| 174 } | |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
175 #define RGB565_FROM_RGB(Pixel, r, g, b) \ |
| 0 | 176 { \ |
|
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 = ((r>>3)<<11)|((g>>2)<<5)|(b>>3); \ |
| 0 | 178 } |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
179 #define RGB555_FROM_RGB(Pixel, r, g, b) \ |
| 0 | 180 { \ |
|
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 = ((r>>3)<<10)|((g>>3)<<5)|(b>>3); \ |
| 0 | 182 } |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
183 #define RGB888_FROM_RGB(Pixel, r, g, b) \ |
| 0 | 184 { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
185 Pixel = (r<<16)|(g<<8)|b; \ |
| 0 | 186 } |
| 187 #define ASSEMBLE_RGB(buf, bpp, fmt, r, g, b) \ | |
| 188 { \ | |
| 189 switch (bpp) { \ | |
| 190 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
|
191 Uint16 Pixel; \ |
| 0 | 192 \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
193 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
|
194 *((Uint16 *)(buf)) = Pixel; \ |
| 0 | 195 } \ |
| 196 break; \ | |
| 197 \ | |
| 198 case 3: { \ | |
| 199 if(SDL_BYTEORDER == SDL_LIL_ENDIAN) { \ | |
| 200 *((buf)+fmt->Rshift/8) = r; \ | |
| 201 *((buf)+fmt->Gshift/8) = g; \ | |
| 202 *((buf)+fmt->Bshift/8) = b; \ | |
| 203 } else { \ | |
| 204 *((buf)+2-fmt->Rshift/8) = r; \ | |
| 205 *((buf)+2-fmt->Gshift/8) = g; \ | |
| 206 *((buf)+2-fmt->Bshift/8) = b; \ | |
| 207 } \ | |
| 208 } \ | |
| 209 break; \ | |
| 210 \ | |
| 211 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
|
212 Uint32 Pixel; \ |
| 0 | 213 \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
214 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
|
215 *((Uint32 *)(buf)) = Pixel; \ |
| 0 | 216 } \ |
| 217 break; \ | |
| 218 } \ | |
| 219 } | |
| 220 #define ASSEMBLE_RGB_AMASK(buf, bpp, fmt, r, g, b, Amask) \ | |
| 221 { \ | |
| 222 switch (bpp) { \ | |
| 223 case 2: { \ | |
| 224 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
|
225 Uint16 Pixel; \ |
| 0 | 226 \ |
| 227 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
|
228 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
|
229 *bufp = Pixel | (*bufp & Amask); \ |
| 0 | 230 } \ |
| 231 break; \ | |
| 232 \ | |
| 233 case 3: { \ | |
| 234 if(SDL_BYTEORDER == SDL_LIL_ENDIAN) { \ | |
| 235 *((buf)+fmt->Rshift/8) = r; \ | |
| 236 *((buf)+fmt->Gshift/8) = g; \ | |
| 237 *((buf)+fmt->Bshift/8) = b; \ | |
| 238 } else { \ | |
| 239 *((buf)+2-fmt->Rshift/8) = r; \ | |
| 240 *((buf)+2-fmt->Gshift/8) = g; \ | |
| 241 *((buf)+2-fmt->Bshift/8) = b; \ | |
| 242 } \ | |
| 243 } \ | |
| 244 break; \ | |
| 245 \ | |
| 246 case 4: { \ | |
| 247 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
|
248 Uint32 Pixel; \ |
| 0 | 249 \ |
| 250 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
|
251 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
|
252 *bufp = Pixel | (*bufp & Amask); \ |
| 0 | 253 } \ |
| 254 break; \ | |
| 255 } \ | |
| 256 } | |
| 257 | |
| 258 /* 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
|
259 #define RGBA_FROM_PIXEL(Pixel, fmt, r, g, b, a) \ |
| 0 | 260 { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
261 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
|
262 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
|
263 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
|
264 a = ((Pixel&fmt->Amask)>>fmt->Ashift)<<fmt->Aloss; \ |
| 0 | 265 } |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
266 #define RGBA_FROM_8888(Pixel, fmt, r, g, b, a) \ |
| 0 | 267 { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
268 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
|
269 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
|
270 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
|
271 a = (Pixel&fmt->Amask)>>fmt->Ashift; \ |
| 0 | 272 } |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
273 #define RGBA_FROM_RGBA8888(Pixel, r, g, b, a) \ |
| 0 | 274 { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
275 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
|
276 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
|
277 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
|
278 a = (Pixel&0xFF); \ |
| 0 | 279 } |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
280 #define RGBA_FROM_ARGB8888(Pixel, r, g, b, a) \ |
| 0 | 281 { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
282 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
|
283 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
|
284 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
|
285 a = (Pixel>>24); \ |
| 0 | 286 } |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
287 #define RGBA_FROM_ABGR8888(Pixel, r, g, b, a) \ |
| 0 | 288 { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
289 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
|
290 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
|
291 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
|
292 a = (Pixel>>24); \ |
| 0 | 293 } |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
294 #define DISEMBLE_RGBA(buf, bpp, fmt, Pixel, r, g, b, a) \ |
| 0 | 295 do { \ |
| 296 switch (bpp) { \ | |
| 297 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
|
298 Pixel = *((Uint16 *)(buf)); \ |
| 0 | 299 break; \ |
| 300 \ | |
| 301 case 3: {/* FIXME: broken code (no alpha) */ \ | |
| 302 Uint8 *b = (Uint8 *)buf; \ | |
| 303 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
|
304 Pixel = b[0] + (b[1] << 8) + (b[2] << 16); \ |
| 0 | 305 } else { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
306 Pixel = (b[0] << 16) + (b[1] << 8) + b[2]; \ |
| 0 | 307 } \ |
| 308 } \ | |
| 309 break; \ | |
| 310 \ | |
| 311 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
|
312 Pixel = *((Uint32 *)(buf)); \ |
| 0 | 313 break; \ |
| 314 \ | |
| 315 default: \ | |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
316 Pixel = 0; /* stop gcc complaints */ \ |
| 0 | 317 break; \ |
| 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 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
|
320 Pixel &= ~fmt->Amask; \ |
| 0 | 321 } while(0) |
| 322 | |
| 323 /* 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
|
324 #define PIXEL_FROM_RGBA(Pixel, fmt, r, g, b, a) \ |
| 0 | 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 Pixel = ((r>>fmt->Rloss)<<fmt->Rshift)| \ |
| 0 | 327 ((g>>fmt->Gloss)<<fmt->Gshift)| \ |
| 328 ((b>>fmt->Bloss)<<fmt->Bshift)| \ | |
|
535
917cc5c56176
Fixed alpha blending bug (thanks Glenn!)
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
329 ((a>>fmt->Aloss)<<fmt->Ashift); \ |
| 0 | 330 } |
| 331 #define ASSEMBLE_RGBA(buf, bpp, fmt, r, g, b, a) \ | |
| 332 { \ | |
| 333 switch (bpp) { \ | |
| 334 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
|
335 Uint16 Pixel; \ |
| 0 | 336 \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
337 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
|
338 *((Uint16 *)(buf)) = Pixel; \ |
| 0 | 339 } \ |
| 340 break; \ | |
| 341 \ | |
| 342 case 3: { /* FIXME: broken code (no alpha) */ \ | |
| 343 if(SDL_BYTEORDER == SDL_LIL_ENDIAN) { \ | |
| 344 *((buf)+fmt->Rshift/8) = r; \ | |
| 345 *((buf)+fmt->Gshift/8) = g; \ | |
| 346 *((buf)+fmt->Bshift/8) = b; \ | |
| 347 } else { \ | |
| 348 *((buf)+2-fmt->Rshift/8) = r; \ | |
| 349 *((buf)+2-fmt->Gshift/8) = g; \ | |
| 350 *((buf)+2-fmt->Bshift/8) = b; \ | |
| 351 } \ | |
| 352 } \ | |
| 353 break; \ | |
| 354 \ | |
| 355 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
|
356 Uint32 Pixel; \ |
| 0 | 357 \ |
|
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_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
|
359 *((Uint32 *)(buf)) = Pixel; \ |
| 0 | 360 } \ |
| 361 break; \ | |
| 362 } \ | |
| 363 } | |
| 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 /* Blend the RGB values of two Pixels based on a source alpha value */ |
| 0 | 366 #define ALPHA_BLEND(sR, sG, sB, A, dR, dG, dB) \ |
| 367 do { \ | |
| 368 dR = (((sR-dR)*(A))>>8)+dR; \ | |
| 369 dG = (((sG-dG)*(A))>>8)+dG; \ | |
| 370 dB = (((sB-dB)*(A))>>8)+dB; \ | |
| 371 } while(0) | |
| 372 | |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
373 /* 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
|
374 #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
|
375 do { \ |
|
ffaaf7ecf685
Altivec-optimized blitters!
Ryan C. Gordon <icculus@icculus.org>
parents:
769
diff
changeset
|
376 unsigned tR, tG, tB, tA; \ |
|
ffaaf7ecf685
Altivec-optimized blitters!
Ryan C. Gordon <icculus@icculus.org>
parents:
769
diff
changeset
|
377 tA = 255 - sA; \ |
|
ffaaf7ecf685
Altivec-optimized blitters!
Ryan C. Gordon <icculus@icculus.org>
parents:
769
diff
changeset
|
378 tR = 1 + (sR * sA) + (dR * tA); \ |
|
ffaaf7ecf685
Altivec-optimized blitters!
Ryan C. Gordon <icculus@icculus.org>
parents:
769
diff
changeset
|
379 dR = (tR + (tR >> 8)) >> 8; \ |
|
ffaaf7ecf685
Altivec-optimized blitters!
Ryan C. Gordon <icculus@icculus.org>
parents:
769
diff
changeset
|
380 tG = 1 + (sG * sA) + (dG * tA); \ |
|
ffaaf7ecf685
Altivec-optimized blitters!
Ryan C. Gordon <icculus@icculus.org>
parents:
769
diff
changeset
|
381 dG = (tG + (tG >> 8)) >> 8; \ |
|
ffaaf7ecf685
Altivec-optimized blitters!
Ryan C. Gordon <icculus@icculus.org>
parents:
769
diff
changeset
|
382 tB = 1 + (sB * sA) + (dB * tA); \ |
|
ffaaf7ecf685
Altivec-optimized blitters!
Ryan C. Gordon <icculus@icculus.org>
parents:
769
diff
changeset
|
383 dB = (tB + (tB >> 8)) >> 8; \ |
|
ffaaf7ecf685
Altivec-optimized blitters!
Ryan C. Gordon <icculus@icculus.org>
parents:
769
diff
changeset
|
384 } while(0) |
|
ffaaf7ecf685
Altivec-optimized blitters!
Ryan C. Gordon <icculus@icculus.org>
parents:
769
diff
changeset
|
385 |
|
ffaaf7ecf685
Altivec-optimized blitters!
Ryan C. Gordon <icculus@icculus.org>
parents:
769
diff
changeset
|
386 |
| 0 | 387 /* 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
|
388 #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
|
389 /* 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
|
390 #else |
| 0 | 391 #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
|
392 #endif |
| 0 | 393 #ifdef USE_DUFFS_LOOP |
| 394 | |
| 395 /* 8-times unrolled loop */ | |
| 396 #define DUFFS_LOOP8(pixel_copy_increment, width) \ | |
| 397 { int n = (width+7)/8; \ | |
|
91
e85e03f195b4
From: "Markus F.X.J. Oberhumer"
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
398 switch (width & 7) { \ |
| 0 | 399 case 0: do { pixel_copy_increment; \ |
| 400 case 7: pixel_copy_increment; \ | |
| 401 case 6: pixel_copy_increment; \ | |
| 402 case 5: pixel_copy_increment; \ | |
| 403 case 4: pixel_copy_increment; \ | |
| 404 case 3: pixel_copy_increment; \ | |
| 405 case 2: pixel_copy_increment; \ | |
| 406 case 1: pixel_copy_increment; \ | |
| 407 } while ( --n > 0 ); \ | |
| 408 } \ | |
| 409 } | |
| 410 | |
| 411 /* 4-times unrolled loop */ | |
| 412 #define DUFFS_LOOP4(pixel_copy_increment, width) \ | |
| 413 { int n = (width+3)/4; \ | |
|
91
e85e03f195b4
From: "Markus F.X.J. Oberhumer"
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
414 switch (width & 3) { \ |
| 0 | 415 case 0: do { pixel_copy_increment; \ |
| 416 case 3: pixel_copy_increment; \ | |
| 417 case 2: pixel_copy_increment; \ | |
| 418 case 1: pixel_copy_increment; \ | |
| 419 } while ( --n > 0 ); \ | |
| 420 } \ | |
| 421 } | |
| 422 | |
|
689
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
423 /* 2 - times unrolled loop */ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
424 #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
|
425 double_pixel_copy_increment, width) \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
426 { int n, w = width; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
427 if( w & 1 ) { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
428 pixel_copy_increment; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
429 w--; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
430 } \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
431 if ( w > 0 ) { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
432 n = ( w + 2) / 4; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
433 switch( w & 2 ) { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
434 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
|
435 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
|
436 } while ( --n > 0 ); \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
437 } \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
438 } \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
439 } |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
440 |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
441 /* 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
|
442 #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
|
443 double_pixel_copy_increment, \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
444 quatro_pixel_copy_increment, width) \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
445 { int n, w = width; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
446 if(w & 1) { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
447 pixel_copy_increment; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
448 w--; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
449 } \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
450 if(w & 2) { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
451 double_pixel_copy_increment; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
452 w -= 2; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
453 } \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
454 if ( w > 0 ) { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
455 n = ( w + 7 ) / 8; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
456 switch( w & 4 ) { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
457 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
|
458 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
|
459 } while ( --n > 0 ); \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
460 } \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
461 } \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
462 } |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
463 |
| 0 | 464 /* Use the 8-times version of the loop by default */ |
| 465 #define DUFFS_LOOP(pixel_copy_increment, width) \ | |
| 466 DUFFS_LOOP8(pixel_copy_increment, width) | |
| 467 | |
| 468 #else | |
| 469 | |
| 470 /* 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
|
471 #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
|
472 double_pixel_copy_increment, width) \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
473 { int n = width; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
474 if( n & 1 ) { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
475 pixel_copy_increment; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
476 n--; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
477 } \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
478 n=n>>1; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
479 for(; n > 0; --n) { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
480 double_pixel_copy_increment; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
481 } \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
482 } |
|
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 /* 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
|
485 #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
|
486 double_pixel_copy_increment, \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
487 quatro_pixel_copy_increment, width) \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
488 { int n = width; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
489 if(n & 1) { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
490 pixel_copy_increment; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
491 n--; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
492 } \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
493 if(n & 2) { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
494 double_pixel_copy_increment; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
495 n -= 2; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
496 } \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
497 n=n>>2; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
498 for(; n > 0; --n) { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
499 quatro_pixel_copy_increment; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
500 } \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
501 } |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
502 |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
503 /* Don't use Duff's device to unroll loops */ |
| 0 | 504 #define DUFFS_LOOP(pixel_copy_increment, width) \ |
| 505 { int n; \ | |
| 506 for ( n=width; n > 0; --n ) { \ | |
| 507 pixel_copy_increment; \ | |
| 508 } \ | |
| 509 } | |
| 510 #define DUFFS_LOOP8(pixel_copy_increment, width) \ | |
| 511 DUFFS_LOOP(pixel_copy_increment, width) | |
| 512 #define DUFFS_LOOP4(pixel_copy_increment, width) \ | |
| 513 DUFFS_LOOP(pixel_copy_increment, width) | |
| 514 | |
| 515 #endif /* USE_DUFFS_LOOP */ | |
| 516 | |
| 517 /* Prevent Visual C++ 6.0 from printing out stupid warnings */ | |
| 518 #if defined(_MSC_VER) && (_MSC_VER >= 600) | |
| 519 #pragma warning(disable: 4550) | |
| 520 #endif | |
| 521 | |
| 522 #endif /* _SDL_blit_h */ |