diff options
Diffstat (limited to 'distrib/sdl-1.2.15/src/video/fbcon/SDL_fb3dfx.c')
| -rw-r--r-- | distrib/sdl-1.2.15/src/video/fbcon/SDL_fb3dfx.c | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/distrib/sdl-1.2.15/src/video/fbcon/SDL_fb3dfx.c b/distrib/sdl-1.2.15/src/video/fbcon/SDL_fb3dfx.c new file mode 100644 index 0000000..eb083b8 --- /dev/null +++ b/distrib/sdl-1.2.15/src/video/fbcon/SDL_fb3dfx.c @@ -0,0 +1,215 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997-2012 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; + Uint32 dst_base; + Uint32 format; + int dstX, dstY; + + /* Don't blit to the display surface when switched away */ + if ( switched_away ) { + return -2; /* no hardware access */ + } + if ( dst == this->screen ) { + SDL_mutexP(hw_lock); + } + + /* Set the destination pixel format */ + dst_base = ((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, 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 src_base; + Uint32 dst_base; + int srcX, srcY; + int dstX, dstY; + Uint32 blitop; + Uint32 use_colorkey; + + /* Don't blit to the display surface when switched away */ + if ( switched_away ) { + return -2; /* no hardware access */ + } + if ( dst == this->screen ) { + SDL_mutexP(hw_lock); + } + + /* Set the source and destination pixel format */ + src_base = ((char *)src->pixels - mapped_mem); + bpp = src->format->BitsPerPixel; + src_format = src->pitch | ((bpp+((bpp==8) ? 0 : 8)) << 13); + dst_base = ((char *)dst->pixels - mapped_mem); + bpp = dst->format->BitsPerPixel; + + 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; +} |