Mercurial > sdl-ios-xcode
annotate src/video/fbcon/SDL_fb3dfx.c @ 1361:19418e4422cb
New configure-based build system. Still work in progress, but much improved
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Thu, 16 Feb 2006 10:11:48 +0000 |
| parents | c71e05b4dc2e |
| children | d910939febfa |
| 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 */ |
| 0 | 22 |
| 23 #include "SDL_video.h" | |
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24 #include "../SDL_blit.h" |
| 0 | 25 #include "SDL_fb3dfx.h" |
| 26 #include "3dfx_mmio.h" | |
| 27 | |
| 28 | |
| 29 /* Wait for vertical retrace */ | |
| 30 static void WaitVBL(_THIS) | |
| 31 { | |
| 32 /* find start of retrace */ | |
| 33 tdfx_waitidle(); | |
| 34 while( (tdfx_in32(TDFX_STATUS) & STATUS_RETRACE) == STATUS_RETRACE ) | |
| 35 ; | |
| 36 /* wait until we're past the start */ | |
| 37 while( (tdfx_in32(TDFX_STATUS) & STATUS_RETRACE) == 0 ) | |
| 38 ; | |
| 39 } | |
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40 static void WaitIdle(_THIS) |
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41 { |
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42 tdfx_waitidle(); |
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43 } |
| 0 | 44 |
| 45 /* Sets video mem colorkey and accelerated blit function */ | |
| 46 static int SetHWColorKey(_THIS, SDL_Surface *surface, Uint32 key) | |
| 47 { | |
| 48 return(0); | |
| 49 } | |
| 50 | |
| 51 static int FillHWRect(_THIS, SDL_Surface *dst, SDL_Rect *rect, Uint32 color) | |
| 52 { | |
| 53 int bpp; | |
| 54 char *dst_base; | |
| 55 Uint32 format; | |
| 56 int dstX, dstY; | |
| 57 | |
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58 /* Don't blit to the display surface when switched away */ |
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59 if ( dst == this->screen ) { |
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60 SDL_mutexP(hw_lock); |
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61 } |
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62 |
| 0 | 63 /* Set the destination pixel format */ |
| 64 dst_base = (char *)((char *)dst->pixels - mapped_mem); | |
| 65 bpp = dst->format->BitsPerPixel; | |
| 66 format = dst->pitch | ((bpp+((bpp==8) ? 0 : 8)) << 13); | |
| 67 | |
| 68 /* Calculate source and destination base coordinates */ | |
| 69 dstX = rect->x; | |
| 70 dstY = rect->y; | |
| 71 | |
| 72 /* Execute the fill command */ | |
| 73 tdfx_wait(6); | |
| 74 tdfx_out32(DSTBASE, (Uint32)dst_base); | |
| 75 tdfx_out32(DSTFORMAT, format); | |
| 76 tdfx_out32(COLORFORE, color); | |
| 77 tdfx_out32(COMMAND_2D, COMMAND_2D_FILLRECT); | |
| 78 tdfx_out32(DSTSIZE, rect->w | (rect->h << 16)); | |
| 79 tdfx_out32(LAUNCH_2D, dstX | (dstY << 16)); | |
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80 |
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81 FB_AddBusySurface(dst); |
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82 |
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83 if ( dst == this->screen ) { |
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84 SDL_mutexV(hw_lock); |
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85 } |
| 0 | 86 return(0); |
| 87 } | |
| 88 | |
| 89 static int HWAccelBlit(SDL_Surface *src, SDL_Rect *srcrect, | |
| 90 SDL_Surface *dst, SDL_Rect *dstrect) | |
| 91 { | |
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92 SDL_VideoDevice *this = current_video; |
| 0 | 93 int bpp; |
| 94 Uint32 src_format; | |
| 95 Uint32 dst_format; | |
| 96 char *src_base; | |
| 97 char *dst_base; | |
| 98 int srcX, srcY; | |
| 99 int dstX, dstY; | |
| 100 Uint32 blitop; | |
| 101 Uint32 use_colorkey; | |
| 102 | |
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103 /* Don't blit to the display surface when switched away */ |
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104 if ( dst == this->screen ) { |
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105 SDL_mutexP(hw_lock); |
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106 } |
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107 |
| 0 | 108 /* Set the source and destination pixel format */ |
| 109 src_base = (char *)((char *)src->pixels - mapped_mem); | |
| 110 bpp = src->format->BitsPerPixel; | |
| 111 src_format = src->pitch | ((bpp+((bpp==8) ? 0 : 8)) << 13); | |
| 112 dst_base = (char *)((char *)dst->pixels - mapped_mem); | |
| 113 bpp = dst->format->BitsPerPixel; | |
| 114 dst_format = dst->pitch | ((bpp+((bpp==8) ? 0 : 8)) << 13); | |
| 115 | |
| 116 srcX = srcrect->x; | |
| 117 srcY = srcrect->y; | |
| 118 dstX = dstrect->x; | |
| 119 dstY = dstrect->y; | |
| 120 | |
| 121 /* Assemble the blit operation */ | |
| 122 blitop = COMMAND_2D_BITBLT | (0xCC << 24); | |
| 123 if ( srcX <= dstX ) { | |
| 124 blitop |= BIT(14); | |
| 125 srcX += (dstrect->w - 1); | |
| 126 dstX += (dstrect->w - 1); | |
| 127 } | |
| 128 if ( srcY <= dstY ) { | |
| 129 blitop |= BIT(15); | |
| 130 srcY += (dstrect->h - 1); | |
| 131 dstY += (dstrect->h - 1); | |
| 132 } | |
| 133 | |
| 134 /* Perform the blit! */ | |
| 135 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) { | |
| 136 tdfx_wait(3); | |
| 137 tdfx_out32(SRCCOLORKEYMIN, src->format->colorkey); | |
| 138 tdfx_out32(SRCCOLORKEYMAX, src->format->colorkey); | |
| 139 tdfx_out32(ROP_2D, 0xAA00); | |
| 140 use_colorkey = 1; | |
| 141 } else { | |
| 142 use_colorkey = 0; | |
| 143 } | |
| 144 tdfx_wait(9); | |
| 145 tdfx_out32(SRCBASE, (Uint32)src_base); | |
| 146 tdfx_out32(SRCFORMAT, src_format); | |
| 147 tdfx_out32(DSTBASE, (Uint32)dst_base); | |
| 148 tdfx_out32(DSTFORMAT, src_format); | |
| 149 tdfx_out32(COMMAND_2D, blitop); | |
| 150 tdfx_out32(COMMANDEXTRA_2D, use_colorkey); | |
| 151 tdfx_out32(DSTSIZE, dstrect->w | (dstrect->h << 16)); | |
| 152 tdfx_out32(DSTXY, dstX | (dstY << 16)); | |
| 153 tdfx_out32(LAUNCH_2D, srcX | (srcY << 16)); | |
| 154 | |
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155 FB_AddBusySurface(src); |
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156 FB_AddBusySurface(dst); |
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157 |
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158 if ( dst == this->screen ) { |
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159 SDL_mutexV(hw_lock); |
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160 } |
| 0 | 161 return(0); |
| 162 } | |
| 163 | |
| 164 static int CheckHWBlit(_THIS, SDL_Surface *src, SDL_Surface *dst) | |
| 165 { | |
| 166 int accelerated; | |
| 167 | |
| 168 /* Set initial acceleration on */ | |
| 169 src->flags |= SDL_HWACCEL; | |
| 170 | |
| 171 /* Set the surface attributes */ | |
| 172 if ( (src->flags & SDL_SRCALPHA) == SDL_SRCALPHA ) { | |
| 173 if ( ! this->info.blit_hw_A ) { | |
| 174 src->flags &= ~SDL_HWACCEL; | |
| 175 } | |
| 176 } | |
| 177 if ( (src->flags & SDL_SRCCOLORKEY) == SDL_SRCCOLORKEY ) { | |
| 178 if ( ! this->info.blit_hw_CC ) { | |
| 179 src->flags &= ~SDL_HWACCEL; | |
| 180 } | |
| 181 } | |
| 182 | |
| 183 /* Check to see if final surface blit is accelerated */ | |
| 184 accelerated = !!(src->flags & SDL_HWACCEL); | |
| 185 if ( accelerated ) { | |
| 186 src->map->hw_blit = HWAccelBlit; | |
| 187 } | |
| 188 return(accelerated); | |
| 189 } | |
| 190 | |
| 191 void FB_3DfxAccel(_THIS, __u32 card) | |
| 192 { | |
| 193 /* We have hardware accelerated surface functions */ | |
| 194 this->CheckHWBlit = CheckHWBlit; | |
| 195 wait_vbl = WaitVBL; | |
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196 wait_idle = WaitIdle; |
| 0 | 197 |
| 198 /* Reset the 3Dfx controller */ | |
| 199 tdfx_out32(BRESERROR0, 0); | |
| 200 tdfx_out32(BRESERROR1, 0); | |
| 201 | |
| 202 /* The 3Dfx has an accelerated color fill */ | |
| 203 this->info.blit_fill = 1; | |
| 204 this->FillHWRect = FillHWRect; | |
| 205 | |
| 206 /* The 3Dfx has accelerated normal and colorkey blits */ | |
| 207 this->info.blit_hw = 1; | |
| 208 this->info.blit_hw_CC = 1; | |
| 209 this->SetHWColorKey = SetHWColorKey; | |
| 210 } |