Mercurial > sdl-ios-xcode
annotate src/video/SDL_blit.h @ 1662:782fd950bd46 SDL-1.3
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
WARNING: None of the video drivers have been updated for the new API yet! The API is still under design and very fluid.
The code is now run through a consistent indent format:
indent -i4 -nut -nsc -br -ce
The headers are being converted to automatically generate doxygen documentation.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 28 May 2006 13:04:16 +0000 |
| parents | d910939febfa |
| children | 4da1ee79c9af |
| 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 */ | |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
30 typedef struct |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
31 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
32 Uint8 *s_pixels; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
33 int s_width; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
34 int s_height; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
35 int s_skip; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
36 Uint8 *d_pixels; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
37 int d_width; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
38 int d_height; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
39 int d_skip; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
40 void *aux_data; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
41 SDL_PixelFormat *src; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
42 Uint8 *table; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
43 SDL_PixelFormat *dst; |
| 0 | 44 } SDL_BlitInfo; |
| 45 | |
| 46 /* The type definition for the low level blit functions */ | |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
47 typedef void (*SDL_loblit) (SDL_BlitInfo * info); |
| 0 | 48 |
| 49 /* This is the private info structure for software accelerated blits */ | |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
50 struct private_swaccel |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
51 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
52 SDL_loblit blit; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
53 void *aux_data; |
| 0 | 54 }; |
| 55 | |
| 56 /* Blit mapping definition */ | |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
57 typedef struct SDL_BlitMap |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
58 { |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
59 SDL_Surface *dst; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
60 int identity; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
61 Uint8 *table; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
62 SDL_blit hw_blit; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
63 SDL_blit sw_blit; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
64 struct private_hwaccel *hw_data; |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
65 struct private_swaccel *sw_data; |
| 0 | 66 |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
67 /* the version count matches the destination; mismatch indicates |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
68 an invalid mapping */ |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
69 unsigned int format_version; |
| 0 | 70 } SDL_BlitMap; |
| 71 | |
| 72 | |
| 73 /* Functions found in SDL_blit.c */ | |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
74 extern int SDL_CalculateBlit (SDL_Surface * surface); |
| 0 | 75 |
| 76 /* Functions found in SDL_blit_{0,1,N,A}.c */ | |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
77 extern SDL_loblit SDL_CalculateBlit0 (SDL_Surface * surface, int complex); |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
78 extern SDL_loblit SDL_CalculateBlit1 (SDL_Surface * surface, int complex); |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
79 extern SDL_loblit SDL_CalculateBlitN (SDL_Surface * surface, int complex); |
|
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
80 extern SDL_loblit SDL_CalculateAlphaBlit (SDL_Surface * surface, int complex); |
| 0 | 81 |
| 82 /* | |
| 83 * Useful macros for blitting routines | |
| 84 */ | |
| 85 | |
| 86 #define FORMAT_EQUAL(A, B) \ | |
| 87 ((A)->BitsPerPixel == (B)->BitsPerPixel \ | |
| 88 && ((A)->Rmask == (B)->Rmask) && ((A)->Amask == (B)->Amask)) | |
| 89 | |
| 90 /* Load pixel of the specified format from a buffer and get its R-G-B values */ | |
| 91 /* 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
|
92 #define RGB_FROM_PIXEL(Pixel, fmt, r, g, b) \ |
| 0 | 93 { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
94 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
|
95 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
|
96 b = (((Pixel&fmt->Bmask)>>fmt->Bshift)<<fmt->Bloss); \ |
| 0 | 97 } |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
98 #define RGB_FROM_RGB565(Pixel, r, g, b) \ |
| 0 | 99 { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
100 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
|
101 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
|
102 b = ((Pixel&0x001F)<<3); \ |
| 0 | 103 } |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
104 #define RGB_FROM_RGB555(Pixel, r, g, b) \ |
| 0 | 105 { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
106 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
|
107 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
|
108 b = ((Pixel&0x001F)<<3); \ |
| 0 | 109 } |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
110 #define RGB_FROM_RGB888(Pixel, r, g, b) \ |
| 0 | 111 { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
112 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
|
113 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
|
114 b = (Pixel&0xFF); \ |
| 0 | 115 } |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
116 #define RETRIEVE_RGB_PIXEL(buf, bpp, Pixel) \ |
| 0 | 117 do { \ |
| 118 switch (bpp) { \ | |
| 119 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
|
120 Pixel = *((Uint16 *)(buf)); \ |
| 0 | 121 break; \ |
| 122 \ | |
| 123 case 3: { \ | |
| 124 Uint8 *B = (Uint8 *)(buf); \ | |
| 125 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
|
126 Pixel = B[0] + (B[1] << 8) + (B[2] << 16); \ |
| 0 | 127 } else { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
128 Pixel = (B[0] << 16) + (B[1] << 8) + B[2]; \ |
| 0 | 129 } \ |
| 130 } \ | |
| 131 break; \ | |
| 132 \ | |
| 133 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
|
134 Pixel = *((Uint32 *)(buf)); \ |
| 0 | 135 break; \ |
| 136 \ | |
| 137 default: \ | |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
138 Pixel = 0; /* appease gcc */ \ |
| 0 | 139 break; \ |
| 140 } \ | |
| 141 } while(0) | |
| 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 #define DISEMBLE_RGB(buf, bpp, fmt, Pixel, r, g, b) \ |
| 0 | 144 do { \ |
| 145 switch (bpp) { \ | |
| 146 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
|
147 Pixel = *((Uint16 *)(buf)); \ |
| 0 | 148 break; \ |
| 149 \ | |
| 150 case 3: { \ | |
| 151 Uint8 *B = (Uint8 *)buf; \ | |
| 152 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
|
153 Pixel = B[0] + (B[1] << 8) + (B[2] << 16); \ |
| 0 | 154 } else { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
155 Pixel = (B[0] << 16) + (B[1] << 8) + B[2]; \ |
| 0 | 156 } \ |
| 157 } \ | |
| 158 break; \ | |
| 159 \ | |
| 160 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
|
161 Pixel = *((Uint32 *)(buf)); \ |
| 0 | 162 break; \ |
| 163 \ | |
| 164 default: \ | |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
165 Pixel = 0; /* prevent gcc from complaining */ \ |
| 0 | 166 break; \ |
| 167 } \ | |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
168 RGB_FROM_PIXEL(Pixel, fmt, r, g, b); \ |
| 0 | 169 } while(0) |
| 170 | |
| 171 /* 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
|
172 #define PIXEL_FROM_RGB(Pixel, fmt, r, g, b) \ |
| 0 | 173 { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
174 Pixel = ((r>>fmt->Rloss)<<fmt->Rshift)| \ |
| 0 | 175 ((g>>fmt->Gloss)<<fmt->Gshift)| \ |
| 176 ((b>>fmt->Bloss)<<fmt->Bshift); \ | |
| 177 } | |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
178 #define RGB565_FROM_RGB(Pixel, r, g, b) \ |
| 0 | 179 { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
180 Pixel = ((r>>3)<<11)|((g>>2)<<5)|(b>>3); \ |
| 0 | 181 } |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
182 #define RGB555_FROM_RGB(Pixel, r, g, b) \ |
| 0 | 183 { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
184 Pixel = ((r>>3)<<10)|((g>>3)<<5)|(b>>3); \ |
| 0 | 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 RGB888_FROM_RGB(Pixel, r, g, b) \ |
| 0 | 187 { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
188 Pixel = (r<<16)|(g<<8)|b; \ |
| 0 | 189 } |
| 190 #define ASSEMBLE_RGB(buf, bpp, fmt, r, g, b) \ | |
| 191 { \ | |
| 192 switch (bpp) { \ | |
| 193 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
|
194 Uint16 Pixel; \ |
| 0 | 195 \ |
|
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_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
|
197 *((Uint16 *)(buf)) = Pixel; \ |
| 0 | 198 } \ |
| 199 break; \ | |
| 200 \ | |
| 201 case 3: { \ | |
| 202 if(SDL_BYTEORDER == SDL_LIL_ENDIAN) { \ | |
| 203 *((buf)+fmt->Rshift/8) = r; \ | |
| 204 *((buf)+fmt->Gshift/8) = g; \ | |
| 205 *((buf)+fmt->Bshift/8) = b; \ | |
| 206 } else { \ | |
| 207 *((buf)+2-fmt->Rshift/8) = r; \ | |
| 208 *((buf)+2-fmt->Gshift/8) = g; \ | |
| 209 *((buf)+2-fmt->Bshift/8) = b; \ | |
| 210 } \ | |
| 211 } \ | |
| 212 break; \ | |
| 213 \ | |
| 214 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
|
215 Uint32 Pixel; \ |
| 0 | 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_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
|
218 *((Uint32 *)(buf)) = Pixel; \ |
| 0 | 219 } \ |
| 220 break; \ | |
| 221 } \ | |
| 222 } | |
| 223 #define ASSEMBLE_RGB_AMASK(buf, bpp, fmt, r, g, b, Amask) \ | |
| 224 { \ | |
| 225 switch (bpp) { \ | |
| 226 case 2: { \ | |
| 227 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
|
228 Uint16 Pixel; \ |
| 0 | 229 \ |
| 230 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
|
231 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
|
232 *bufp = Pixel | (*bufp & Amask); \ |
| 0 | 233 } \ |
| 234 break; \ | |
| 235 \ | |
| 236 case 3: { \ | |
| 237 if(SDL_BYTEORDER == SDL_LIL_ENDIAN) { \ | |
| 238 *((buf)+fmt->Rshift/8) = r; \ | |
| 239 *((buf)+fmt->Gshift/8) = g; \ | |
| 240 *((buf)+fmt->Bshift/8) = b; \ | |
| 241 } else { \ | |
| 242 *((buf)+2-fmt->Rshift/8) = r; \ | |
| 243 *((buf)+2-fmt->Gshift/8) = g; \ | |
| 244 *((buf)+2-fmt->Bshift/8) = b; \ | |
| 245 } \ | |
| 246 } \ | |
| 247 break; \ | |
| 248 \ | |
| 249 case 4: { \ | |
| 250 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
|
251 Uint32 Pixel; \ |
| 0 | 252 \ |
| 253 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
|
254 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
|
255 *bufp = Pixel | (*bufp & Amask); \ |
| 0 | 256 } \ |
| 257 break; \ | |
| 258 } \ | |
| 259 } | |
| 260 | |
| 261 /* 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
|
262 #define RGBA_FROM_PIXEL(Pixel, fmt, r, g, b, a) \ |
| 0 | 263 { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
264 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
|
265 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
|
266 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
|
267 a = ((Pixel&fmt->Amask)>>fmt->Ashift)<<fmt->Aloss; \ |
| 0 | 268 } |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
269 #define RGBA_FROM_8888(Pixel, fmt, r, g, b, a) \ |
| 0 | 270 { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
271 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
|
272 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
|
273 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
|
274 a = (Pixel&fmt->Amask)>>fmt->Ashift; \ |
| 0 | 275 } |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
276 #define RGBA_FROM_RGBA8888(Pixel, r, g, b, a) \ |
| 0 | 277 { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
278 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
|
279 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
|
280 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
|
281 a = (Pixel&0xFF); \ |
| 0 | 282 } |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
283 #define RGBA_FROM_ARGB8888(Pixel, r, g, b, a) \ |
| 0 | 284 { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
285 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
|
286 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
|
287 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
|
288 a = (Pixel>>24); \ |
| 0 | 289 } |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
290 #define RGBA_FROM_ABGR8888(Pixel, r, g, b, a) \ |
| 0 | 291 { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
292 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
|
293 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
|
294 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
|
295 a = (Pixel>>24); \ |
| 0 | 296 } |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
297 #define DISEMBLE_RGBA(buf, bpp, fmt, Pixel, r, g, b, a) \ |
| 0 | 298 do { \ |
| 299 switch (bpp) { \ | |
| 300 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
|
301 Pixel = *((Uint16 *)(buf)); \ |
| 0 | 302 break; \ |
| 303 \ | |
| 304 case 3: {/* FIXME: broken code (no alpha) */ \ | |
| 305 Uint8 *b = (Uint8 *)buf; \ | |
| 306 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
|
307 Pixel = b[0] + (b[1] << 8) + (b[2] << 16); \ |
| 0 | 308 } else { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
309 Pixel = (b[0] << 16) + (b[1] << 8) + b[2]; \ |
| 0 | 310 } \ |
| 311 } \ | |
| 312 break; \ | |
| 313 \ | |
| 314 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
|
315 Pixel = *((Uint32 *)(buf)); \ |
| 0 | 316 break; \ |
| 317 \ | |
| 318 default: \ | |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
319 Pixel = 0; /* stop gcc complaints */ \ |
| 0 | 320 break; \ |
| 321 } \ | |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
322 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
|
323 Pixel &= ~fmt->Amask; \ |
| 0 | 324 } while(0) |
| 325 | |
| 326 /* 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
|
327 #define PIXEL_FROM_RGBA(Pixel, fmt, r, g, b, a) \ |
| 0 | 328 { \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
329 Pixel = ((r>>fmt->Rloss)<<fmt->Rshift)| \ |
| 0 | 330 ((g>>fmt->Gloss)<<fmt->Gshift)| \ |
| 331 ((b>>fmt->Bloss)<<fmt->Bshift)| \ | |
|
535
917cc5c56176
Fixed alpha blending bug (thanks Glenn!)
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
332 ((a>>fmt->Aloss)<<fmt->Ashift); \ |
| 0 | 333 } |
| 334 #define ASSEMBLE_RGBA(buf, bpp, fmt, r, g, b, a) \ | |
| 335 { \ | |
| 336 switch (bpp) { \ | |
| 337 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
|
338 Uint16 Pixel; \ |
| 0 | 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 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
|
341 *((Uint16 *)(buf)) = Pixel; \ |
| 0 | 342 } \ |
| 343 break; \ | |
| 344 \ | |
| 345 case 3: { /* FIXME: broken code (no alpha) */ \ | |
| 346 if(SDL_BYTEORDER == SDL_LIL_ENDIAN) { \ | |
| 347 *((buf)+fmt->Rshift/8) = r; \ | |
| 348 *((buf)+fmt->Gshift/8) = g; \ | |
| 349 *((buf)+fmt->Bshift/8) = b; \ | |
| 350 } else { \ | |
| 351 *((buf)+2-fmt->Rshift/8) = r; \ | |
| 352 *((buf)+2-fmt->Gshift/8) = g; \ | |
| 353 *((buf)+2-fmt->Bshift/8) = b; \ | |
| 354 } \ | |
| 355 } \ | |
| 356 break; \ | |
| 357 \ | |
| 358 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
|
359 Uint32 Pixel; \ |
| 0 | 360 \ |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
361 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
|
362 *((Uint32 *)(buf)) = Pixel; \ |
| 0 | 363 } \ |
| 364 break; \ | |
| 365 } \ | |
| 366 } | |
| 367 | |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
368 /* Blend the RGB values of two Pixels based on a source alpha value */ |
| 0 | 369 #define ALPHA_BLEND(sR, sG, sB, A, dR, dG, dB) \ |
| 370 do { \ | |
| 371 dR = (((sR-dR)*(A))>>8)+dR; \ | |
| 372 dG = (((sG-dG)*(A))>>8)+dG; \ | |
| 373 dB = (((sB-dB)*(A))>>8)+dB; \ | |
| 374 } while(0) | |
| 375 | |
|
1162
2651158f59b8
Enable altivec blitters on PowerPC Linux, and some fixes for recent
Ryan C. Gordon <icculus@icculus.org>
parents:
1047
diff
changeset
|
376 /* 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
|
377 #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
|
378 do { \ |
|
ffaaf7ecf685
Altivec-optimized blitters!
Ryan C. Gordon <icculus@icculus.org>
parents:
769
diff
changeset
|
379 unsigned tR, tG, tB, tA; \ |
|
ffaaf7ecf685
Altivec-optimized blitters!
Ryan C. Gordon <icculus@icculus.org>
parents:
769
diff
changeset
|
380 tA = 255 - sA; \ |
|
ffaaf7ecf685
Altivec-optimized blitters!
Ryan C. Gordon <icculus@icculus.org>
parents:
769
diff
changeset
|
381 tR = 1 + (sR * sA) + (dR * tA); \ |
|
ffaaf7ecf685
Altivec-optimized blitters!
Ryan C. Gordon <icculus@icculus.org>
parents:
769
diff
changeset
|
382 dR = (tR + (tR >> 8)) >> 8; \ |
|
ffaaf7ecf685
Altivec-optimized blitters!
Ryan C. Gordon <icculus@icculus.org>
parents:
769
diff
changeset
|
383 tG = 1 + (sG * sA) + (dG * tA); \ |
|
ffaaf7ecf685
Altivec-optimized blitters!
Ryan C. Gordon <icculus@icculus.org>
parents:
769
diff
changeset
|
384 dG = (tG + (tG >> 8)) >> 8; \ |
|
ffaaf7ecf685
Altivec-optimized blitters!
Ryan C. Gordon <icculus@icculus.org>
parents:
769
diff
changeset
|
385 tB = 1 + (sB * sA) + (dB * tA); \ |
|
ffaaf7ecf685
Altivec-optimized blitters!
Ryan C. Gordon <icculus@icculus.org>
parents:
769
diff
changeset
|
386 dB = (tB + (tB >> 8)) >> 8; \ |
|
ffaaf7ecf685
Altivec-optimized blitters!
Ryan C. Gordon <icculus@icculus.org>
parents:
769
diff
changeset
|
387 } while(0) |
|
ffaaf7ecf685
Altivec-optimized blitters!
Ryan C. Gordon <icculus@icculus.org>
parents:
769
diff
changeset
|
388 |
|
ffaaf7ecf685
Altivec-optimized blitters!
Ryan C. Gordon <icculus@icculus.org>
parents:
769
diff
changeset
|
389 |
| 0 | 390 /* 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
|
391 #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
|
392 /* 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
|
393 #else |
| 0 | 394 #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
|
395 #endif |
| 0 | 396 #ifdef USE_DUFFS_LOOP |
| 397 | |
| 398 /* 8-times unrolled loop */ | |
| 399 #define DUFFS_LOOP8(pixel_copy_increment, width) \ | |
| 400 { int n = (width+7)/8; \ | |
|
91
e85e03f195b4
From: "Markus F.X.J. Oberhumer"
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
401 switch (width & 7) { \ |
| 0 | 402 case 0: do { pixel_copy_increment; \ |
| 403 case 7: pixel_copy_increment; \ | |
| 404 case 6: pixel_copy_increment; \ | |
| 405 case 5: pixel_copy_increment; \ | |
| 406 case 4: pixel_copy_increment; \ | |
| 407 case 3: pixel_copy_increment; \ | |
| 408 case 2: pixel_copy_increment; \ | |
| 409 case 1: pixel_copy_increment; \ | |
| 410 } while ( --n > 0 ); \ | |
| 411 } \ | |
| 412 } | |
| 413 | |
| 414 /* 4-times unrolled loop */ | |
| 415 #define DUFFS_LOOP4(pixel_copy_increment, width) \ | |
| 416 { int n = (width+3)/4; \ | |
|
91
e85e03f195b4
From: "Markus F.X.J. Oberhumer"
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
417 switch (width & 3) { \ |
| 0 | 418 case 0: do { pixel_copy_increment; \ |
| 419 case 3: pixel_copy_increment; \ | |
| 420 case 2: pixel_copy_increment; \ | |
| 421 case 1: pixel_copy_increment; \ | |
| 422 } while ( --n > 0 ); \ | |
| 423 } \ | |
| 424 } | |
| 425 | |
|
689
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
426 /* 2 - times unrolled loop */ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
427 #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
|
428 double_pixel_copy_increment, width) \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
429 { int n, w = width; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
430 if( w & 1 ) { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
431 pixel_copy_increment; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
432 w--; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
433 } \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
434 if ( w > 0 ) { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
435 n = ( w + 2) / 4; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
436 switch( w & 2 ) { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
437 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
|
438 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
|
439 } while ( --n > 0 ); \ |
|
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 } \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
442 } |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
443 |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
444 /* 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
|
445 #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
|
446 double_pixel_copy_increment, \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
447 quatro_pixel_copy_increment, width) \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
448 { int n, w = width; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
449 if(w & 1) { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
450 pixel_copy_increment; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
451 w--; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
452 } \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
453 if(w & 2) { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
454 double_pixel_copy_increment; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
455 w -= 2; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
456 } \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
457 if ( w > 0 ) { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
458 n = ( w + 7 ) / 8; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
459 switch( w & 4 ) { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
460 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
|
461 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
|
462 } while ( --n > 0 ); \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
463 } \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
464 } \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
465 } |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
466 |
| 0 | 467 /* Use the 8-times version of the loop by default */ |
| 468 #define DUFFS_LOOP(pixel_copy_increment, width) \ | |
| 469 DUFFS_LOOP8(pixel_copy_increment, width) | |
| 470 | |
| 471 #else | |
| 472 | |
| 473 /* 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
|
474 #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
|
475 double_pixel_copy_increment, width) \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
476 { int n = width; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
477 if( n & 1 ) { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
478 pixel_copy_increment; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
479 n--; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
480 } \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
481 n=n>>1; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
482 for(; n > 0; --n) { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
483 double_pixel_copy_increment; \ |
|
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 /* 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
|
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 = width; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
492 if(n & 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 n--; \ |
|
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(n & 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 n -= 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 n=n>>2; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
501 for(; n > 0; --n) { \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
502 quatro_pixel_copy_increment; \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
503 } \ |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
504 } |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
505 |
|
5bb080d35049
Date: Tue, 19 Aug 2003 17:57:00 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
553
diff
changeset
|
506 /* Don't use Duff's device to unroll loops */ |
| 0 | 507 #define DUFFS_LOOP(pixel_copy_increment, width) \ |
| 508 { int n; \ | |
| 509 for ( n=width; n > 0; --n ) { \ | |
| 510 pixel_copy_increment; \ | |
| 511 } \ | |
| 512 } | |
| 513 #define DUFFS_LOOP8(pixel_copy_increment, width) \ | |
| 514 DUFFS_LOOP(pixel_copy_increment, width) | |
| 515 #define DUFFS_LOOP4(pixel_copy_increment, width) \ | |
| 516 DUFFS_LOOP(pixel_copy_increment, width) | |
| 517 | |
| 518 #endif /* USE_DUFFS_LOOP */ | |
| 519 | |
| 520 /* Prevent Visual C++ 6.0 from printing out stupid warnings */ | |
| 521 #if defined(_MSC_VER) && (_MSC_VER >= 600) | |
| 522 #pragma warning(disable: 4550) | |
| 523 #endif | |
| 524 | |
| 525 #endif /* _SDL_blit_h */ | |
|
1662
782fd950bd46
Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
526 /* vi: set ts=4 sw=4 expandtab: */ |