Mercurial > sdl-ios-xcode
annotate src/video/fbcon/3dfx_mmio.h @ 1643:51038e80ae59
More general fix for bug #189
The clipping is done at a higher level, and the low level functions are
passed clipped rectangles. Drivers which don't support source clipping
have not been changed, so the image will be squished instead of clipped,
but at least they will no longer crash when the destination rect was out
of bounds.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 17 Apr 2006 06:47:23 +0000 |
| parents | d910939febfa |
| children | 782fd950bd46 a1b03ba2fcd0 |
| 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:
769
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:
769
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:
769
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:
769
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:
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 | |
|
252
e8157fcb3114
Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
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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 /* 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 |