Mercurial > sdl-ios-xcode
annotate src/video/ggi/SDL_ggivideo.c @ 1668:4da1ee79c9af SDL-1.3
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| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 29 May 2006 04:04:35 +0000 |
| parents | 782fd950bd46 |
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| rev | line source |
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| 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 /* GGI-based SDL video driver implementation. | |
| 25 */ | |
| 26 | |
| 27 #include <fcntl.h> | |
| 28 #include <unistd.h> | |
| 29 #include <sys/mman.h> | |
| 30 | |
| 31 #include <ggi/ggi.h> | |
| 32 #include <ggi/gii.h> | |
| 33 | |
| 34 #include "SDL_video.h" | |
| 35 #include "SDL_mouse.h" | |
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36 #include "../SDL_sysvideo.h" |
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37 #include "../SDL_pixels_c.h" |
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38 #include "../../events/SDL_events_c.h" |
| 0 | 39 #include "SDL_ggivideo.h" |
| 40 #include "SDL_ggimouse_c.h" | |
| 41 #include "SDL_ggievents_c.h" | |
| 42 | |
| 43 | |
| 44 struct private_hwdata | |
| 45 { | |
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46 ggi_visual_t vis; |
| 0 | 47 }; |
| 48 | |
| 49 ggi_visual_t VIS; | |
| 50 | |
| 51 /* Initialization/Query functions */ | |
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52 static int GGI_VideoInit(_THIS, SDL_PixelFormat * vformat); |
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53 static SDL_Rect **GGI_ListModes(_THIS, SDL_PixelFormat * format, |
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54 Uint32 flags); |
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55 static SDL_Surface *GGI_SetVideoMode(_THIS, SDL_Surface * current, int width, |
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56 int height, int bpp, Uint32 flags); |
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57 static int GGI_SetColors(_THIS, int firstcolor, int ncolors, |
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58 SDL_Color * colors); |
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59 static void GGI_VideoQuit(_THIS); |
| 0 | 60 |
| 61 /* Hardware surface functions */ | |
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62 static int GGI_AllocHWSurface(_THIS, SDL_Surface * surface); |
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63 static int GGI_LockHWSurface(_THIS, SDL_Surface * surface); |
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64 static void GGI_UnlockHWSurface(_THIS, SDL_Surface * surface); |
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65 static void GGI_FreeHWSurface(_THIS, SDL_Surface * surface); |
| 0 | 66 |
| 67 /* GGI driver bootstrap functions */ | |
| 68 | |
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69 static int |
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70 GGI_Available(void) |
| 0 | 71 { |
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72 ggi_visual_t *vis; |
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73 |
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74 vis = NULL; |
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75 if (ggiInit() == 0) { |
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76 vis = ggiOpen(NULL); |
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77 if (vis != NULL) { |
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78 ggiClose(vis); |
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79 } |
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80 } |
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81 return (vis != NULL); |
| 0 | 82 } |
| 83 | |
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84 static void |
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85 GGI_DeleteDevice(SDL_VideoDevice * device) |
| 0 | 86 { |
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87 SDL_free(device->hidden); |
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88 SDL_free(device); |
| 0 | 89 } |
| 90 | |
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91 static SDL_VideoDevice * |
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92 GGI_CreateDevice(int devindex) |
| 0 | 93 { |
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94 SDL_VideoDevice *device; |
| 0 | 95 |
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96 /* Initialize all variables that we clean on shutdown */ |
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97 device = (SDL_VideoDevice *) SDL_malloc(sizeof(SDL_VideoDevice)); |
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98 if (device) { |
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99 SDL_memset(device, 0, (sizeof *device)); |
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100 device->hidden = (struct SDL_PrivateVideoData *) |
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101 SDL_malloc((sizeof *device->hidden)); |
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102 } |
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103 if ((device == NULL) || (device->hidden == NULL)) { |
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104 SDL_OutOfMemory(); |
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105 if (device) { |
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106 SDL_free(device); |
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107 } |
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108 return (0); |
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109 } |
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110 SDL_memset(device->hidden, 0, (sizeof *device->hidden)); |
| 0 | 111 |
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112 /* Set the function pointers */ |
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113 device->VideoInit = GGI_VideoInit; |
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114 device->ListModes = GGI_ListModes; |
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115 device->SetVideoMode = GGI_SetVideoMode; |
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116 device->SetColors = GGI_SetColors; |
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117 device->UpdateRects = NULL; |
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118 device->VideoQuit = GGI_VideoQuit; |
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119 device->AllocHWSurface = GGI_AllocHWSurface; |
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120 device->CheckHWBlit = NULL; |
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121 device->FillHWRect = NULL; |
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122 device->SetHWColorKey = NULL; |
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123 device->SetHWAlpha = NULL; |
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124 device->LockHWSurface = GGI_LockHWSurface; |
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125 device->UnlockHWSurface = GGI_UnlockHWSurface; |
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126 device->FlipHWSurface = NULL; |
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127 device->FreeHWSurface = GGI_FreeHWSurface; |
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128 device->SetCaption = NULL; |
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129 device->SetIcon = NULL; |
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130 device->IconifyWindow = NULL; |
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131 device->GrabInput = NULL; |
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132 device->GetWMInfo = NULL; |
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133 device->InitOSKeymap = GGI_InitOSKeymap; |
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134 device->PumpEvents = GGI_PumpEvents; |
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136 device->free = GGI_DeleteDevice; |
| 0 | 137 |
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138 return device; |
| 0 | 139 } |
| 140 | |
| 141 VideoBootStrap GGI_bootstrap = { | |
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142 "ggi", "General Graphics Interface (GGI)", |
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143 GGI_Available, GGI_CreateDevice |
| 0 | 144 }; |
| 145 | |
| 146 | |
| 147 static SDL_Rect video_mode; | |
| 148 static SDL_Rect *SDL_modelist[4] = { NULL, NULL, NULL, NULL }; | |
| 149 | |
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150 int |
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151 GGI_VideoInit(_THIS, SDL_PixelFormat * vformat) |
| 0 | 152 { |
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153 ggi_mode mode = { |
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154 1, |
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155 {GGI_AUTO, GGI_AUTO}, |
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156 {GGI_AUTO, GGI_AUTO}, |
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157 {0, 0}, |
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158 GT_AUTO, |
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159 {GGI_AUTO, GGI_AUTO} |
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160 }; |
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161 struct private_hwdata *priv; |
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162 ggi_color pal[256], map[256]; |
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163 const ggi_directbuffer *db; |
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164 int err, num_bufs; |
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165 ggi_pixel white, black; |
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166 |
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167 priv = SDL_malloc(sizeof(struct private_hwdata)); |
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168 if (priv == NULL) { |
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169 SDL_SetError("Unhandled GGI mode type!\n"); |
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170 GGI_VideoQuit(NULL); |
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171 } |
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172 |
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173 if (ggiInit() != 0) { |
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174 SDL_SetError("Unable to initialize GGI!\n"); |
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175 GGI_VideoQuit(NULL); |
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176 } |
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177 |
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178 VIS = ggiOpen(NULL); |
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179 if (VIS == NULL) { |
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180 SDL_SetError("Unable to open default GGI visual!\n"); |
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181 ggiExit(); |
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182 GGI_VideoQuit(NULL); |
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183 } |
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184 |
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185 ggiSetFlags(VIS, GGIFLAG_ASYNC); |
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186 |
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187 /* Validate mode, autodetecting any GGI_AUTO or GT_AUTO fields */ |
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188 ggiCheckMode(VIS, &mode); |
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189 |
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190 /* At this point we should have a valid mode - try to set it */ |
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191 err = ggiSetMode(VIS, &mode); |
| 0 | 192 |
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193 /* If we couldn't set _any_ modes, something is very wrong */ |
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194 if (err) { |
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195 SDL_SetError("Can't set a mode!\n"); |
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196 ggiClose(VIS); |
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197 ggiExit(); |
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198 GGI_VideoQuit(NULL); |
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199 } |
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200 |
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201 /* Determine the current screen size */ |
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202 this->info.current_w = mode.virt.x; |
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203 this->info.current_h = mode.virt.y; |
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204 |
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205 /* Set a palette for palletized modes */ |
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206 if (GT_SCHEME(mode.graphtype) == GT_PALETTE) { |
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207 ggiSetColorfulPalette(VIS); |
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208 ggiGetPalette(VIS, 0, 1 << vformat->BitsPerPixel, pal); |
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209 } |
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210 |
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211 /* Now we try to get the DirectBuffer info, which determines whether |
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212 * SDL can access hardware surfaces directly. */ |
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213 |
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214 num_bufs = ggiDBGetNumBuffers(VIS); |
| 0 | 215 |
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216 if (num_bufs > 0) { |
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217 db = ggiDBGetBuffer(VIS, 0); /* Only handle one DB for now */ |
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218 |
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219 vformat->BitsPerPixel = db->buffer.plb.pixelformat->depth; |
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220 |
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221 vformat->Rmask = db->buffer.plb.pixelformat->red_mask; |
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222 vformat->Gmask = db->buffer.plb.pixelformat->green_mask; |
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223 vformat->Bmask = db->buffer.plb.pixelformat->blue_mask; |
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224 |
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225 /* Fill in our hardware acceleration capabilities */ |
| 0 | 226 |
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227 this->info.wm_available = 0; |
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228 this->info.hw_available = 1; |
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229 this->info.video_mem = db->buffer.plb.stride * mode.virt.y; |
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230 } |
| 0 | 231 |
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232 video_mode.x = 0; |
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233 video_mode.y = 0; |
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234 video_mode.w = mode.virt.x; |
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235 video_mode.h = mode.virt.y; |
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236 SDL_modelist[((vformat->BitsPerPixel + 7) / 8) - 1] = &video_mode; |
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237 |
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238 /* We're done! */ |
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239 return (0); |
| 0 | 240 } |
| 241 | |
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242 static SDL_Rect ** |
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243 GGI_ListModes(_THIS, SDL_PixelFormat * format, Uint32 flags) |
| 0 | 244 { |
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245 return (&SDL_modelist[((format->BitsPerPixel + 7) / 8) - 1]); |
| 0 | 246 } |
| 247 | |
| 248 /* Various screen update functions available */ | |
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249 static void GGI_DirectUpdate(_THIS, int numrects, SDL_Rect * rects); |
| 0 | 250 |
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251 SDL_Surface * |
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252 GGI_SetVideoMode(_THIS, SDL_Surface * current, int width, int height, |
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253 int bpp, Uint32 flags) |
| 0 | 254 { |
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255 ggi_mode mode = { |
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256 1, |
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257 {GGI_AUTO, GGI_AUTO}, |
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258 {GGI_AUTO, GGI_AUTO}, |
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259 {0, 0}, |
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260 GT_AUTO, |
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261 {GGI_AUTO, GGI_AUTO} |
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262 }; |
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263 const ggi_directbuffer *db; |
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264 ggi_color pal[256]; |
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265 int err; |
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266 |
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267 fprintf(stderr, "GGI_SetVideoMode()\n"); |
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268 |
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269 mode.visible.x = mode.virt.x = width; |
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270 mode.visible.y = mode.virt.y = height; |
| 0 | 271 |
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272 /* Translate requested SDL bit depth into a GGI mode */ |
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273 switch (bpp) { |
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274 case 1: |
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275 mode.graphtype = GT_1BIT; |
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276 break; |
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277 case 2: |
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278 mode.graphtype = GT_2BIT; |
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279 break; |
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280 case 4: |
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281 mode.graphtype = GT_4BIT; |
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282 break; |
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283 case 8: |
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284 mode.graphtype = GT_8BIT; |
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285 break; |
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286 case 15: |
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287 mode.graphtype = GT_15BIT; |
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288 break; |
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289 case 16: |
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290 mode.graphtype = GT_16BIT; |
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291 break; |
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292 case 24: |
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293 mode.graphtype = GT_24BIT; |
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294 break; |
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295 case 32: |
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296 mode.graphtype = GT_32BIT; |
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297 break; |
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298 default: |
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299 SDL_SetError("Unknown SDL bit depth, using GT_AUTO....\n"); |
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300 mode.graphtype = GT_AUTO; |
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301 } |
| 0 | 302 |
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303 /* Validate mode, autodetecting any GGI_AUTO or GT_AUTO fields */ |
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304 ggiCheckMode(VIS, &mode); |
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305 |
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306 /* At this point we should have a valid mode - try to set it */ |
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307 err = ggiSetMode(VIS, &mode); |
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308 |
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309 /* If we couldn't set _any_ modes, something is very wrong */ |
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310 if (err) { |
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311 SDL_SetError("Can't set a mode!\n"); |
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312 ggiClose(VIS); |
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313 ggiExit(); |
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314 GGI_VideoQuit(NULL); |
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315 } |
| 0 | 316 |
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317 /* Set a palette for palletized modes */ |
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318 if (GT_SCHEME(mode.graphtype) == GT_PALETTE) { |
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319 ggiSetColorfulPalette(VIS); |
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320 ggiGetPalette(VIS, 0, 1 << bpp, pal); |
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321 } |
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322 |
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323 db = ggiDBGetBuffer(VIS, 0); |
| 0 | 324 |
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325 /* Set up the new mode framebuffer */ |
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326 current->flags = (SDL_FULLSCREEN | SDL_HWSURFACE); |
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327 current->w = mode.virt.x; |
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328 current->h = mode.virt.y; |
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329 current->pitch = db->buffer.plb.stride; |
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330 current->pixels = db->read; |
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331 |
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332 /* Set the blit function */ |
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333 this->UpdateRects = GGI_DirectUpdate; |
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334 |
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335 /* We're done */ |
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336 return (current); |
| 0 | 337 } |
| 338 | |
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339 static int |
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340 GGI_AllocHWSurface(_THIS, SDL_Surface * surface) |
| 0 | 341 { |
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342 return (-1); |
| 0 | 343 } |
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344 static void |
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345 GGI_FreeHWSurface(_THIS, SDL_Surface * surface) |
| 0 | 346 { |
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347 return; |
| 0 | 348 } |
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349 static int |
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350 GGI_LockHWSurface(_THIS, SDL_Surface * surface) |
| 0 | 351 { |
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352 return (0); |
| 0 | 353 } |
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354 static void |
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355 GGI_UnlockHWSurface(_THIS, SDL_Surface * surface) |
| 0 | 356 { |
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357 return; |
| 0 | 358 } |
| 359 | |
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360 static void |
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361 GGI_DirectUpdate(_THIS, int numrects, SDL_Rect * rects) |
| 0 | 362 { |
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363 int i; |
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364 |
| 0 | 365 /* ggiFlush(VIS); */ |
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366 |
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367 for (i = 0; i < numrects; i++) { |
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368 ggiFlushRegion(VIS, rects[i].x, rects[i].y, rects[i].w, rects[i].h); |
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369 } |
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370 return; |
| 0 | 371 } |
| 372 | |
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373 int |
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374 GGI_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color * colors) |
| 0 | 375 { |
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376 int i; |
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377 ggi_color pal[256]; |
| 0 | 378 |
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379 /* Set up the colormap */ |
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380 for (i = 0; i < ncolors; i++) { |
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381 pal[i].r = (colors[i].r << 8) | colors[i].r; |
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382 pal[i].g = (colors[i].g << 8) | colors[i].g; |
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383 pal[i].b = (colors[i].b << 8) | colors[i].b; |
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384 } |
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385 |
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386 ggiSetPalette(VIS, firstcolor, ncolors, pal); |
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387 |
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388 return 1; |
| 0 | 389 } |
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390 |
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391 void |
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392 GGI_VideoQuit(_THIS) |
| 0 | 393 { |
| 394 } | |
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395 void |
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396 GGI_FinalQuit(void) |
| 0 | 397 { |
| 398 } | |
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399 |
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400 /* vi: set ts=4 sw=4 expandtab: */ |