Mercurial > sdl-ios-xcode
view src/video/fbcon/3dfx_regs.h @ 1240:3b8a43c428bb
From Bug #36:
There are a couple of issues with the selection of Altivec alpha-blitting
routines in CalculateAlphaBlit() in src/video/SDL_Blit_A.c.
1) There's no check for the presence of Altivec when checking if the
Blit32to565PixelAlphaAltivec() routine can be selected.
2) Altivec cannot be used in video memory, and there's no check if the
destination surface is a hardware surface. (Alpha-blitting to a hardware
surface with GPU support is a bad idea, but somebody's bound to do it anyway.)
Patch to fix these attached.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Sun, 08 Jan 2006 21:18:15 +0000 |
| parents | b8d311d90021 |
| children | c9b51268668f |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2004 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Sam Lantinga slouken@libsdl.org */ #ifdef SAVE_RCSID static char rcsid = "@(#) $Id$"; #endif #ifndef _3DFX_REGS_H #define _3DFX_REGS_H /* This information comes from the public 3Dfx specs for the Voodoo 3000 */ /* mapped_io register offsets */ #define TDFX_STATUS 0x00 #define INTCTRL (0x00100000 + 0x04) #define CLIP0MIN (0x00100000 + 0x08) #define CLIP0MAX (0x00100000 + 0x0c) #define DSTBASE (0x00100000 + 0x10) #define DSTFORMAT (0x00100000 + 0x14) #define SRCCOLORKEYMIN (0x00100000 + 0x18) #define SRCCOLORKEYMAX (0x00100000 + 0x1c) #define DSTCOLORKEYMIN (0x00100000 + 0x20) #define DSTCOLORKEYMAX (0x00100000 + 0x24) #define BRESERROR0 (0x00100000 + 0x28) #define BRESERROR1 (0x00100000 + 0x2c) #define ROP_2D (0x00100000 + 0x30) #define SRCBASE (0x00100000 + 0x34) #define COMMANDEXTRA_2D (0x00100000 + 0x38) #define PATTERN0 (0x00100000 + 0x44) #define PATTERN1 (0x00100000 + 0x48) #define CLIP1MIN (0x00100000 + 0x4c) #define CLIP1MAX (0x00100000 + 0x50) #define SRCFORMAT (0x00100000 + 0x54) #define SRCSIZE (0x00100000 + 0x58) #define SRCXY (0x00100000 + 0x5c) #define COLORBACK (0x00100000 + 0x60) #define COLORFORE (0x00100000 + 0x64) #define DSTSIZE (0x00100000 + 0x68) #define DSTXY (0x00100000 + 0x6c) #define COMMAND_2D (0x00100000 + 0x70) #define LAUNCH_2D (0x00100000 + 0x80) #define PATTERNBASE (0x00100000 + 0x100) #define COMMAND_3D (0x00200000 + 0x120) /* register bitfields (not all, only as needed) */ #define BIT(x) (1UL << (x)) #define COMMAND_2D_BITBLT 0x01 #define COMMAND_2D_FILLRECT 0x05 #define COMMAND_2D_LINE 0x06 #define COMMAND_2D_POLYGON_FILL 0x08 #define COMMAND_2D_INITIATE BIT(8) #define COMMAND_2D_REVERSELINE BIT(9) #define COMMAND_2D_STIPPLELINE BIT(12) #define COMMAND_2D_MONOCHROME_PATT BIT(13) #define COMMAND_2D_MONOCHROME_TRANSP BIT(16) #define COMMAND_3D_NOP 0x00 #define STATUS_RETRACE BIT(6) #define STATUS_BUSY BIT(9) #endif /* _3DFX_REGS_H */