Mercurial > sdl-ios-xcode
view src/video/fbcon/SDL_fb3dfx.c @ 1483:52a61c7b323b
*** empty log message ***
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Wed, 08 Mar 2006 06:21:04 +0000 |
parents | d910939febfa |
children | 14717b52abc0 |
line wrap: on
line source
/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2006 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Sam Lantinga slouken@libsdl.org */ #include "SDL_config.h" #include "SDL_video.h" #include "../SDL_blit.h" #include "SDL_fb3dfx.h" #include "3dfx_mmio.h" /* Wait for vertical retrace */ static void WaitVBL(_THIS) { /* find start of retrace */ tdfx_waitidle(); while( (tdfx_in32(TDFX_STATUS) & STATUS_RETRACE) == STATUS_RETRACE ) ; /* wait until we're past the start */ while( (tdfx_in32(TDFX_STATUS) & STATUS_RETRACE) == 0 ) ; } static void WaitIdle(_THIS) { tdfx_waitidle(); } /* Sets video mem colorkey and accelerated blit function */ static int SetHWColorKey(_THIS, SDL_Surface *surface, Uint32 key) { return(0); } static int FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color) { int bpp; char *dst_base; Uint32 format; int dstX, dstY; /* Don't blit to the display surface when switched away */ if ( dst == this->screen ) { SDL_mutexP(hw_lock); } /* Set the destination pixel format */ dst_base = (char *)((char *)dst->pixels - mapped_mem); bpp = dst->format->BitsPerPixel; format = dst->pitch | ((bpp+((bpp==8) ? 0 : 8)) << 13); /* Calculate source and destination base coordinates */ dstX = rect->x; dstY = rect->y; /* Execute the fill command */ tdfx_wait(6); tdfx_out32(DSTBASE, (Uint32)dst_base); tdfx_out32(DSTFORMAT, format); tdfx_out32(COLORFORE, color); tdfx_out32(COMMAND_2D, COMMAND_2D_FILLRECT); tdfx_out32(DSTSIZE, rect->w | (rect->h << 16)); tdfx_out32(LAUNCH_2D, dstX | (dstY << 16)); FB_AddBusySurface(dst); if ( dst == this->screen ) { SDL_mutexV(hw_lock); } return(0); } static int HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect, SDL_Surface *dst, SDL_Rect *dstrect) { SDL_VideoDevice *this = current_video; int bpp; Uint32 src_format; Uint32 dst_format; char *src_base; char *dst_base; int srcX, srcY; int dstX, dstY; Uint32 blitop; Uint32 use_colorkey; /* Don't blit to the display surface when switched away */ if ( dst == this->screen ) { SDL_mutexP(hw_lock); } /* Set the source and destination pixel format */ src_base = (char *)((char *)src->pixels - mapped_mem); bpp = src->format->BitsPerPixel; src_format = src->pitch | ((bpp+((bpp==8) ? 0 : 8)) << 13); dst_base = (char *)((char *)dst->pixels - mapped_mem); bpp = dst->format->BitsPerPixel; dst_format = dst->pitch | ((bpp+((bpp==8) ? 0 : 8)) << 13); srcX = srcrect->x; srcY = srcrect->y; dstX = dstrect->x; dstY = dstrect->y; /* Assemble the blit operation */ blitop = COMMAND_2D_BITBLT | (0xCC << 24); if ( srcX <= dstX ) { blitop |= BIT(14); srcX += (dstrect->w - 1); dstX += (dstrect->w - 1); } if ( srcY <= dstY ) { blitop |= BIT(15); srcY += (dstrect->h - 1); dstY += (dstrect->h - 1); } /* Perform the blit! */ if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) { tdfx_wait(3); tdfx_out32(SRCCOLORKEYMIN, src->format->colorkey); tdfx_out32(SRCCOLORKEYMAX, src->format->colorkey); tdfx_out32(ROP_2D, 0xAA00); use_colorkey = 1; } else { use_colorkey = 0; } tdfx_wait(9); tdfx_out32(SRCBASE, (Uint32)src_base); tdfx_out32(SRCFORMAT, src_format); tdfx_out32(DSTBASE, (Uint32)dst_base); tdfx_out32(DSTFORMAT, src_format); tdfx_out32(COMMAND_2D, blitop); tdfx_out32(COMMANDEXTRA_2D, use_colorkey); tdfx_out32(DSTSIZE, dstrect->w | (dstrect->h << 16)); tdfx_out32(DSTXY, dstX | (dstY << 16)); tdfx_out32(LAUNCH_2D, srcX | (srcY << 16)); FB_AddBusySurface(src); FB_AddBusySurface(dst); if ( dst == this->screen ) { SDL_mutexV(hw_lock); } return(0); } static int CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst) { int accelerated; /* Set initial acceleration on */ src->flags |= SDL_HWACCEL; /* Set the surface attributes */ if ( (src->flags & SDL_SRCALPHA) == SDL_SRCALPHA ) { if ( ! this->info.blit_hw_A ) { src->flags &= ~SDL_HWACCEL; } } if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) { if ( ! this->info.blit_hw_CC ) { src->flags &= ~SDL_HWACCEL; } } /* Check to see if final surface blit is accelerated */ accelerated = !!(src->flags & SDL_HWACCEL); if ( accelerated ) { src->map->hw_blit = HWAccelBlit; } return(accelerated); } void FB_3DfxAccel(_THIS, __u32 card) { /* We have hardware accelerated surface functions */ this->CheckHWBlit = CheckHWBlit; wait_vbl = WaitVBL; wait_idle = WaitIdle; /* Reset the 3Dfx controller */ tdfx_out32(BRESERROR0, 0); tdfx_out32(BRESERROR1, 0); /* The 3Dfx has an accelerated color fill */ this->info.blit_fill = 1; this->FillHWRect = FillHWRect; /* The 3Dfx has accelerated normal and colorkey blits */ this->info.blit_hw = 1; this->info.blit_hw_CC = 1; this->SetHWColorKey = SetHWColorKey; }