Mercurial > sdl-ios-xcode
annotate src/video/fbcon/3dfx_mmio.h @ 4928:930614179450 SDL-1.2
Patch from Haiku's Google Code-In student Daniel Marth, fixes an off-by-one issue in bwindow.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Fri, 03 Dec 2010 16:55:25 -0800 |
| parents | a1b03ba2fcd0 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 4159 | 3 Copyright (C) 1997-2009 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
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c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
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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:
769
diff
changeset
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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:
769
diff
changeset
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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:
769
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:
769
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:
769
diff
changeset
|
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
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252
e8157fcb3114
Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
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20 slouken@libsdl.org |
| 0 | 21 */ |
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d910939febfa
Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents:
1312
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changeset
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22 #include "SDL_config.h" |
| 0 | 23 |
| 24 /* 3Dfx register definitions */ | |
| 25 | |
| 26 #include "3dfx_regs.h" | |
| 27 | |
| 28 /* 3Dfx control macros */ | |
| 29 | |
| 30 #define tdfx_in8(reg) *(volatile Uint8 *)(mapped_io + (reg)) | |
| 31 #define tdfx_in32(reg) *(volatile Uint32 *)(mapped_io + (reg)) | |
| 32 | |
| 33 #define tdfx_out8(reg,v) *(volatile Uint8 *)(mapped_io + (reg)) = v; | |
| 34 #define tdfx_out32(reg,v) *(volatile Uint32 *)(mapped_io + (reg)) = v; | |
| 35 | |
| 36 | |
| 37 /* Wait for fifo space */ | |
| 38 #define tdfx_wait(space) \ | |
| 39 { \ | |
| 40 while ( (tdfx_in8(TDFX_STATUS) & 0x1F) < space ) \ | |
| 41 ; \ | |
| 42 } | |
| 43 | |
| 44 | |
| 45 /* Wait for idle accelerator */ | |
| 46 #define tdfx_waitidle() \ | |
| 47 { \ | |
| 48 int i = 0; \ | |
| 49 \ | |
| 50 tdfx_wait(1); \ | |
| 51 tdfx_out32(COMMAND_3D, COMMAND_3D_NOP); \ | |
| 52 do { \ | |
| 53 i = (tdfx_in32(TDFX_STATUS) & STATUS_BUSY) ? 0 : i + 1; \ | |
| 54 } while ( i != 3 ); \ | |
| 55 } | |
| 56 |