Mercurial > sdl-ios-xcode
annotate src/video/fbcon/3dfx_mmio.h @ 845:333db1d87876
Fixed a bug in detecting surface mapping changes
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Thu, 19 Feb 2004 21:13:24 +0000 |
| parents | b8d311d90021 |
| children | c9b51268668f |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
769
b8d311d90021
Updated copyright information for 2004 (Happy New Year!)
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
3 Copyright (C) 1997-2004 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 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 | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
|
252
e8157fcb3114
Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* 3Dfx register definitions */ | |
| 29 | |
| 30 #include "3dfx_regs.h" | |
| 31 | |
| 32 /* 3Dfx control macros */ | |
| 33 | |
| 34 #define tdfx_in8(reg) *(volatile Uint8 *)(mapped_io + (reg)) | |
| 35 #define tdfx_in32(reg) *(volatile Uint32 *)(mapped_io + (reg)) | |
| 36 | |
| 37 #define tdfx_out8(reg,v) *(volatile Uint8 *)(mapped_io + (reg)) = v; | |
| 38 #define tdfx_out32(reg,v) *(volatile Uint32 *)(mapped_io + (reg)) = v; | |
| 39 | |
| 40 | |
| 41 /* Wait for fifo space */ | |
| 42 #define tdfx_wait(space) \ | |
| 43 { \ | |
| 44 while ( (tdfx_in8(TDFX_STATUS) & 0x1F) < space ) \ | |
| 45 ; \ | |
| 46 } | |
| 47 | |
| 48 | |
| 49 /* Wait for idle accelerator */ | |
| 50 #define tdfx_waitidle() \ | |
| 51 { \ | |
| 52 int i = 0; \ | |
| 53 \ | |
| 54 tdfx_wait(1); \ | |
| 55 tdfx_out32(COMMAND_3D, COMMAND_3D_NOP); \ | |
| 56 do { \ | |
| 57 i = (tdfx_in32(TDFX_STATUS) & STATUS_BUSY) ? 0 : i + 1; \ | |
| 58 } while ( i != 3 ); \ | |
| 59 } | |
| 60 |