Mercurial > sdl-ios-xcode
annotate src/video/fbcon/SDL_fb3dfx.c @ 513:8feff52d7f5f
*** empty log message ***
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 06 Oct 2002 18:47:20 +0000 |
| parents | f6ffac90895c |
| children | b8d311d90021 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 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 | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
|
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 #include "SDL_types.h" | |
| 29 #include "SDL_video.h" | |
| 30 #include "SDL_blit.h" | |
| 31 #include "SDL_fb3dfx.h" | |
| 32 #include "3dfx_mmio.h" | |
| 33 | |
| 34 | |
| 35 /* Wait for vertical retrace */ | |
| 36 static void WaitVBL(_THIS) | |
| 37 { | |
| 38 /* find start of retrace */ | |
| 39 tdfx_waitidle(); | |
| 40 while( (tdfx_in32(TDFX_STATUS) & STATUS_RETRACE) == STATUS_RETRACE ) | |
| 41 ; | |
| 42 /* wait until we're past the start */ | |
| 43 while( (tdfx_in32(TDFX_STATUS) & STATUS_RETRACE) == 0 ) | |
| 44 ; | |
| 45 } | |
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46 static void WaitIdle(_THIS) |
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47 { |
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48 tdfx_waitidle(); |
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49 } |
| 0 | 50 |
| 51 /* Sets video mem colorkey and accelerated blit function */ | |
| 52 static int SetHWColorKey(_THIS, SDL_Surface *surface, Uint32 key) | |
| 53 { | |
| 54 return(0); | |
| 55 } | |
| 56 | |
| 57 static int FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color) | |
| 58 { | |
| 59 int bpp; | |
| 60 char *dst_base; | |
| 61 Uint32 format; | |
| 62 int dstX, dstY; | |
| 63 | |
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64 /* Don't blit to the display surface when switched away */ |
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65 if ( dst == this->screen ) { |
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66 SDL_mutexP(hw_lock); |
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67 } |
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68 |
| 0 | 69 /* Set the destination pixel format */ |
| 70 dst_base = (char *)((char *)dst->pixels - mapped_mem); | |
| 71 bpp = dst->format->BitsPerPixel; | |
| 72 format = dst->pitch | ((bpp+((bpp==8) ? 0 : 8)) << 13); | |
| 73 | |
| 74 /* Calculate source and destination base coordinates */ | |
| 75 dstX = rect->x; | |
| 76 dstY = rect->y; | |
| 77 | |
| 78 /* Execute the fill command */ | |
| 79 tdfx_wait(6); | |
| 80 tdfx_out32(DSTBASE, (Uint32)dst_base); | |
| 81 tdfx_out32(DSTFORMAT, format); | |
| 82 tdfx_out32(COLORFORE, color); | |
| 83 tdfx_out32(COMMAND_2D, COMMAND_2D_FILLRECT); | |
| 84 tdfx_out32(DSTSIZE, rect->w | (rect->h << 16)); | |
| 85 tdfx_out32(LAUNCH_2D, dstX | (dstY << 16)); | |
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86 |
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87 FB_AddBusySurface(dst); |
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88 |
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89 if ( dst == this->screen ) { |
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90 SDL_mutexV(hw_lock); |
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91 } |
| 0 | 92 return(0); |
| 93 } | |
| 94 | |
| 95 static int HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect, | |
| 96 SDL_Surface *dst, SDL_Rect *dstrect) | |
| 97 { | |
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98 SDL_VideoDevice *this = current_video; |
| 0 | 99 int bpp; |
| 100 Uint32 src_format; | |
| 101 Uint32 dst_format; | |
| 102 char *src_base; | |
| 103 char *dst_base; | |
| 104 int srcX, srcY; | |
| 105 int dstX, dstY; | |
| 106 Uint32 blitop; | |
| 107 Uint32 use_colorkey; | |
| 108 | |
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109 /* Don't blit to the display surface when switched away */ |
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110 if ( dst == this->screen ) { |
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111 SDL_mutexP(hw_lock); |
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112 } |
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113 |
| 0 | 114 /* Set the source and destination pixel format */ |
| 115 src_base = (char *)((char *)src->pixels - mapped_mem); | |
| 116 bpp = src->format->BitsPerPixel; | |
| 117 src_format = src->pitch | ((bpp+((bpp==8) ? 0 : 8)) << 13); | |
| 118 dst_base = (char *)((char *)dst->pixels - mapped_mem); | |
| 119 bpp = dst->format->BitsPerPixel; | |
| 120 dst_format = dst->pitch | ((bpp+((bpp==8) ? 0 : 8)) << 13); | |
| 121 | |
| 122 srcX = srcrect->x; | |
| 123 srcY = srcrect->y; | |
| 124 dstX = dstrect->x; | |
| 125 dstY = dstrect->y; | |
| 126 | |
| 127 /* Assemble the blit operation */ | |
| 128 blitop = COMMAND_2D_BITBLT | (0xCC << 24); | |
| 129 if ( srcX <= dstX ) { | |
| 130 blitop |= BIT(14); | |
| 131 srcX += (dstrect->w - 1); | |
| 132 dstX += (dstrect->w - 1); | |
| 133 } | |
| 134 if ( srcY <= dstY ) { | |
| 135 blitop |= BIT(15); | |
| 136 srcY += (dstrect->h - 1); | |
| 137 dstY += (dstrect->h - 1); | |
| 138 } | |
| 139 | |
| 140 /* Perform the blit! */ | |
| 141 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) { | |
| 142 tdfx_wait(3); | |
| 143 tdfx_out32(SRCCOLORKEYMIN, src->format->colorkey); | |
| 144 tdfx_out32(SRCCOLORKEYMAX, src->format->colorkey); | |
| 145 tdfx_out32(ROP_2D, 0xAA00); | |
| 146 use_colorkey = 1; | |
| 147 } else { | |
| 148 use_colorkey = 0; | |
| 149 } | |
| 150 tdfx_wait(9); | |
| 151 tdfx_out32(SRCBASE, (Uint32)src_base); | |
| 152 tdfx_out32(SRCFORMAT, src_format); | |
| 153 tdfx_out32(DSTBASE, (Uint32)dst_base); | |
| 154 tdfx_out32(DSTFORMAT, src_format); | |
| 155 tdfx_out32(COMMAND_2D, blitop); | |
| 156 tdfx_out32(COMMANDEXTRA_2D, use_colorkey); | |
| 157 tdfx_out32(DSTSIZE, dstrect->w | (dstrect->h << 16)); | |
| 158 tdfx_out32(DSTXY, dstX | (dstY << 16)); | |
| 159 tdfx_out32(LAUNCH_2D, srcX | (srcY << 16)); | |
| 160 | |
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161 FB_AddBusySurface(src); |
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162 FB_AddBusySurface(dst); |
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163 |
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164 if ( dst == this->screen ) { |
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165 SDL_mutexV(hw_lock); |
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166 } |
| 0 | 167 return(0); |
| 168 } | |
| 169 | |
| 170 static int CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst) | |
| 171 { | |
| 172 int accelerated; | |
| 173 | |
| 174 /* Set initial acceleration on */ | |
| 175 src->flags |= SDL_HWACCEL; | |
| 176 | |
| 177 /* Set the surface attributes */ | |
| 178 if ( (src->flags & SDL_SRCALPHA) == SDL_SRCALPHA ) { | |
| 179 if ( ! this->info.blit_hw_A ) { | |
| 180 src->flags &= ~SDL_HWACCEL; | |
| 181 } | |
| 182 } | |
| 183 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) { | |
| 184 if ( ! this->info.blit_hw_CC ) { | |
| 185 src->flags &= ~SDL_HWACCEL; | |
| 186 } | |
| 187 } | |
| 188 | |
| 189 /* Check to see if final surface blit is accelerated */ | |
| 190 accelerated = !!(src->flags & SDL_HWACCEL); | |
| 191 if ( accelerated ) { | |
| 192 src->map->hw_blit = HWAccelBlit; | |
| 193 } | |
| 194 return(accelerated); | |
| 195 } | |
| 196 | |
| 197 void FB_3DfxAccel(_THIS, __u32 card) | |
| 198 { | |
| 199 /* We have hardware accelerated surface functions */ | |
| 200 this->CheckHWBlit = CheckHWBlit; | |
| 201 wait_vbl = WaitVBL; | |
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202 wait_idle = WaitIdle; |
| 0 | 203 |
| 204 /* Reset the 3Dfx controller */ | |
| 205 tdfx_out32(BRESERROR0, 0); | |
| 206 tdfx_out32(BRESERROR1, 0); | |
| 207 | |
| 208 /* The 3Dfx has an accelerated color fill */ | |
| 209 this->info.blit_fill = 1; | |
| 210 this->FillHWRect = FillHWRect; | |
| 211 | |
| 212 /* The 3Dfx has accelerated normal and colorkey blits */ | |
| 213 this->info.blit_hw = 1; | |
| 214 this->info.blit_hw_CC = 1; | |
| 215 this->SetHWColorKey = SetHWColorKey; | |
| 216 } |