Mercurial > sdl-ios-xcode
annotate src/video/fbcon/SDL_fb3dfx.c @ 1800:cc6bea4bb90d
Removed unused variable
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 10 May 2006 06:07:47 +0000 |
| parents | 7a36f01acf71 |
| children | 782fd950bd46 c121d94672cb f903dc168217 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 SDL - Simple DirectMedia Layer |
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
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5 This library is free software; you can redistribute it and/or |
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6 modify it under the terms of the GNU Lesser General Public |
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7 License as published by the Free Software Foundation; either |
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8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 9 |
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10 This library is distributed in the hope that it will be useful, |
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 Lesser General Public License for more details. |
| 0 | 14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
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19 Sam Lantinga |
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20 slouken@libsdl.org |
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21 */ |
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22 #include "SDL_config.h" |
| 0 | 23 |
| 24 #include "SDL_video.h" | |
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25 #include "../SDL_blit.h" |
| 0 | 26 #include "SDL_fb3dfx.h" |
| 27 #include "3dfx_mmio.h" | |
| 28 | |
| 29 | |
| 30 /* Wait for vertical retrace */ | |
| 31 static void WaitVBL(_THIS) | |
| 32 { | |
| 33 /* find start of retrace */ | |
| 34 tdfx_waitidle(); | |
| 35 while( (tdfx_in32(TDFX_STATUS) & STATUS_RETRACE) == STATUS_RETRACE ) | |
| 36 ; | |
| 37 /* wait until we're past the start */ | |
| 38 while( (tdfx_in32(TDFX_STATUS) & STATUS_RETRACE) == 0 ) | |
| 39 ; | |
| 40 } | |
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41 static void WaitIdle(_THIS) |
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42 { |
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43 tdfx_waitidle(); |
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44 } |
| 0 | 45 |
| 46 /* Sets video mem colorkey and accelerated blit function */ | |
| 47 static int SetHWColorKey(_THIS, SDL_Surface *surface, Uint32 key) | |
| 48 { | |
| 49 return(0); | |
| 50 } | |
| 51 | |
| 52 static int FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color) | |
| 53 { | |
| 54 int bpp; | |
| 55 char *dst_base; | |
| 56 Uint32 format; | |
| 57 int dstX, dstY; | |
| 58 | |
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59 /* Don't blit to the display surface when switched away */ |
| 1780 | 60 if ( switched_away ) { |
| 61 return -2; /* no hardware access */ | |
| 62 } | |
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63 if ( dst == this->screen ) { |
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64 SDL_mutexP(hw_lock); |
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65 } |
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66 |
| 0 | 67 /* Set the destination pixel format */ |
| 68 dst_base = (char *)((char *)dst->pixels - mapped_mem); | |
| 69 bpp = dst->format->BitsPerPixel; | |
| 70 format = dst->pitch | ((bpp+((bpp==8) ? 0 : 8)) << 13); | |
| 71 | |
| 72 /* Calculate source and destination base coordinates */ | |
| 73 dstX = rect->x; | |
| 74 dstY = rect->y; | |
| 75 | |
| 76 /* Execute the fill command */ | |
| 77 tdfx_wait(6); | |
| 78 tdfx_out32(DSTBASE, (Uint32)dst_base); | |
| 79 tdfx_out32(DSTFORMAT, format); | |
| 80 tdfx_out32(COLORFORE, color); | |
| 81 tdfx_out32(COMMAND_2D, COMMAND_2D_FILLRECT); | |
| 82 tdfx_out32(DSTSIZE, rect->w | (rect->h << 16)); | |
| 83 tdfx_out32(LAUNCH_2D, dstX | (dstY << 16)); | |
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84 |
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85 FB_AddBusySurface(dst); |
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86 |
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87 if ( dst == this->screen ) { |
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88 SDL_mutexV(hw_lock); |
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89 } |
| 0 | 90 return(0); |
| 91 } | |
| 92 | |
| 93 static int HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect, | |
| 94 SDL_Surface *dst, SDL_Rect *dstrect) | |
| 95 { | |
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96 SDL_VideoDevice *this = current_video; |
| 0 | 97 int bpp; |
| 98 Uint32 src_format; | |
| 99 Uint32 dst_format; | |
| 100 char *src_base; | |
| 101 char *dst_base; | |
| 102 int srcX, srcY; | |
| 103 int dstX, dstY; | |
| 104 Uint32 blitop; | |
| 105 Uint32 use_colorkey; | |
| 106 | |
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107 /* Don't blit to the display surface when switched away */ |
| 1780 | 108 if ( switched_away ) { |
| 109 return -2; /* no hardware access */ | |
| 110 } | |
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111 if ( dst == this->screen ) { |
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112 SDL_mutexP(hw_lock); |
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113 } |
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114 |
| 0 | 115 /* Set the source and destination pixel format */ |
| 116 src_base = (char *)((char *)src->pixels - mapped_mem); | |
| 117 bpp = src->format->BitsPerPixel; | |
| 118 src_format = src->pitch | ((bpp+((bpp==8) ? 0 : 8)) << 13); | |
| 119 dst_base = (char *)((char *)dst->pixels - mapped_mem); | |
| 120 bpp = dst->format->BitsPerPixel; | |
| 121 dst_format = dst->pitch | ((bpp+((bpp==8) ? 0 : 8)) << 13); | |
| 122 | |
| 123 srcX = srcrect->x; | |
| 124 srcY = srcrect->y; | |
| 125 dstX = dstrect->x; | |
| 126 dstY = dstrect->y; | |
| 127 | |
| 128 /* Assemble the blit operation */ | |
| 129 blitop = COMMAND_2D_BITBLT | (0xCC << 24); | |
| 130 if ( srcX <= dstX ) { | |
| 131 blitop |= BIT(14); | |
| 132 srcX += (dstrect->w - 1); | |
| 133 dstX += (dstrect->w - 1); | |
| 134 } | |
| 135 if ( srcY <= dstY ) { | |
| 136 blitop |= BIT(15); | |
| 137 srcY += (dstrect->h - 1); | |
| 138 dstY += (dstrect->h - 1); | |
| 139 } | |
| 140 | |
| 141 /* Perform the blit! */ | |
| 142 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) { | |
| 143 tdfx_wait(3); | |
| 144 tdfx_out32(SRCCOLORKEYMIN, src->format->colorkey); | |
| 145 tdfx_out32(SRCCOLORKEYMAX, src->format->colorkey); | |
| 146 tdfx_out32(ROP_2D, 0xAA00); | |
| 147 use_colorkey = 1; | |
| 148 } else { | |
| 149 use_colorkey = 0; | |
| 150 } | |
| 151 tdfx_wait(9); | |
| 152 tdfx_out32(SRCBASE, (Uint32)src_base); | |
| 153 tdfx_out32(SRCFORMAT, src_format); | |
| 154 tdfx_out32(DSTBASE, (Uint32)dst_base); | |
| 155 tdfx_out32(DSTFORMAT, src_format); | |
| 156 tdfx_out32(COMMAND_2D, blitop); | |
| 157 tdfx_out32(COMMANDEXTRA_2D, use_colorkey); | |
| 158 tdfx_out32(DSTSIZE, dstrect->w | (dstrect->h << 16)); | |
| 159 tdfx_out32(DSTXY, dstX | (dstY << 16)); | |
| 160 tdfx_out32(LAUNCH_2D, srcX | (srcY << 16)); | |
| 161 | |
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162 FB_AddBusySurface(src); |
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163 FB_AddBusySurface(dst); |
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164 |
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165 if ( dst == this->screen ) { |
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166 SDL_mutexV(hw_lock); |
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167 } |
| 0 | 168 return(0); |
| 169 } | |
| 170 | |
| 171 static int CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst) | |
| 172 { | |
| 173 int accelerated; | |
| 174 | |
| 175 /* Set initial acceleration on */ | |
| 176 src->flags |= SDL_HWACCEL; | |
| 177 | |
| 178 /* Set the surface attributes */ | |
| 179 if ( (src->flags & SDL_SRCALPHA) == SDL_SRCALPHA ) { | |
| 180 if ( ! this->info.blit_hw_A ) { | |
| 181 src->flags &= ~SDL_HWACCEL; | |
| 182 } | |
| 183 } | |
| 184 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) { | |
| 185 if ( ! this->info.blit_hw_CC ) { | |
| 186 src->flags &= ~SDL_HWACCEL; | |
| 187 } | |
| 188 } | |
| 189 | |
| 190 /* Check to see if final surface blit is accelerated */ | |
| 191 accelerated = !!(src->flags & SDL_HWACCEL); | |
| 192 if ( accelerated ) { | |
| 193 src->map->hw_blit = HWAccelBlit; | |
| 194 } | |
| 195 return(accelerated); | |
| 196 } | |
| 197 | |
| 198 void FB_3DfxAccel(_THIS, __u32 card) | |
| 199 { | |
| 200 /* We have hardware accelerated surface functions */ | |
| 201 this->CheckHWBlit = CheckHWBlit; | |
| 202 wait_vbl = WaitVBL; | |
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203 wait_idle = WaitIdle; |
| 0 | 204 |
| 205 /* Reset the 3Dfx controller */ | |
| 206 tdfx_out32(BRESERROR0, 0); | |
| 207 tdfx_out32(BRESERROR1, 0); | |
| 208 | |
| 209 /* The 3Dfx has an accelerated color fill */ | |
| 210 this->info.blit_fill = 1; | |
| 211 this->FillHWRect = FillHWRect; | |
| 212 | |
| 213 /* The 3Dfx has accelerated normal and colorkey blits */ | |
| 214 this->info.blit_hw = 1; | |
| 215 this->info.blit_hw_CC = 1; | |
| 216 this->SetHWColorKey = SetHWColorKey; | |
| 217 } |