| 1 | /* |
| 2 | SDL - Simple DirectMedia Layer |
| 3 | Copyright (C) 1997-2009 Sam Lantinga |
| 4 | |
| 5 | This library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 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 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with this library; if not, write to the Free Software |
| 17 | Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | |
| 19 | Sam Lantinga |
| 20 | slouken@libsdl.org |
| 21 | */ |
| 22 | #include "SDL_config.h" |
| 23 | |
| 24 | #include "SDL_video.h" |
| 25 | #include "SDL_mouse.h" |
| 26 | #include "../SDL_sysvideo.h" |
| 27 | #include "../SDL_pixels_c.h" |
| 28 | #include "../../events/SDL_events_c.h" |
| 29 | |
| 30 | #include "SDL_dcvideo.h" |
| 31 | #include "SDL_dcevents_c.h" |
| 32 | #include "SDL_dcmouse_c.h" |
| 33 | |
| 34 | #include <dc/video.h> |
| 35 | #include <dc/pvr.h> |
| 36 | |
| 37 | |
| 38 | /* Initialization/Query functions */ |
| 39 | static int DC_VideoInit(_THIS, SDL_PixelFormat *vformat); |
| 40 | static SDL_Rect **DC_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags); |
| 41 | static SDL_Surface *DC_SetVideoMode(_THIS, SDL_Surface *current, int width, int height, int bpp, Uint32 flags); |
| 42 | static int DC_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors); |
| 43 | static void DC_VideoQuit(_THIS); |
| 44 | |
| 45 | /* Hardware surface functions */ |
| 46 | static int DC_AllocHWSurface(_THIS, SDL_Surface *surface); |
| 47 | static int DC_LockHWSurface(_THIS, SDL_Surface *surface); |
| 48 | static void DC_UnlockHWSurface(_THIS, SDL_Surface *surface); |
| 49 | static void DC_FreeHWSurface(_THIS, SDL_Surface *surface); |
| 50 | static int DC_FlipHWSurface(_THIS, SDL_Surface *surface); |
| 51 | |
| 52 | /* etc. */ |
| 53 | static void DC_UpdateRects(_THIS, int numrects, SDL_Rect *rects); |
| 54 | |
| 55 | /* OpenGL */ |
| 56 | #if SDL_VIDEO_OPENGL |
| 57 | static void *DC_GL_GetProcAddress(_THIS, const char *proc); |
| 58 | static int DC_GL_LoadLibrary(_THIS, const char *path); |
| 59 | static int DC_GL_GetAttribute(_THIS, SDL_GLattr attrib, int* value); |
| 60 | static void DC_GL_SwapBuffers(_THIS); |
| 61 | #endif |
| 62 | |
| 63 | /* DC driver bootstrap functions */ |
| 64 | |
| 65 | static int DC_Available(void) |
| 66 | { |
| 67 | return 1; |
| 68 | } |
| 69 | |
| 70 | static void DC_DeleteDevice(SDL_VideoDevice *device) |
| 71 | { |
| 72 | SDL_free(device->hidden); |
| 73 | SDL_free(device); |
| 74 | } |
| 75 | |
| 76 | static SDL_VideoDevice *DC_CreateDevice(int devindex) |
| 77 | { |
| 78 | SDL_VideoDevice *device; |
| 79 | |
| 80 | /* Initialize all variables that we clean on shutdown */ |
| 81 | device = (SDL_VideoDevice *)SDL_malloc(sizeof(SDL_VideoDevice)); |
| 82 | if ( device ) { |
| 83 | SDL_memset(device, 0, (sizeof *device)); |
| 84 | device->hidden = (struct SDL_PrivateVideoData *) |
| 85 | SDL_malloc((sizeof *device->hidden)); |
| 86 | } |
| 87 | if ( (device == NULL) || (device->hidden == NULL) ) { |
| 88 | SDL_OutOfMemory(); |
| 89 | if ( device ) { |
| 90 | SDL_free(device); |
| 91 | } |
| 92 | return(0); |
| 93 | } |
| 94 | SDL_memset(device->hidden, 0, (sizeof *device->hidden)); |
| 95 | |
| 96 | /* Set the function pointers */ |
| 97 | device->VideoInit = DC_VideoInit; |
| 98 | device->ListModes = DC_ListModes; |
| 99 | device->SetVideoMode = DC_SetVideoMode; |
| 100 | device->CreateYUVOverlay = NULL; |
| 101 | device->SetColors = DC_SetColors; |
| 102 | device->UpdateRects = DC_UpdateRects; |
| 103 | device->VideoQuit = DC_VideoQuit; |
| 104 | device->AllocHWSurface = DC_AllocHWSurface; |
| 105 | device->CheckHWBlit = NULL; |
| 106 | device->FillHWRect = NULL; |
| 107 | device->SetHWColorKey = NULL; |
| 108 | device->SetHWAlpha = NULL; |
| 109 | device->LockHWSurface = DC_LockHWSurface; |
| 110 | device->UnlockHWSurface = DC_UnlockHWSurface; |
| 111 | device->FlipHWSurface = DC_FlipHWSurface; |
| 112 | device->FreeHWSurface = DC_FreeHWSurface; |
| 113 | #if SDL_VIDEO_OPENGL |
| 114 | device->GL_LoadLibrary = DC_GL_LoadLibrary; |
| 115 | device->GL_GetProcAddress = DC_GL_GetProcAddress; |
| 116 | device->GL_GetAttribute = DC_GL_GetAttribute; |
| 117 | device->GL_MakeCurrent = NULL; |
| 118 | device->GL_SwapBuffers = DC_GL_SwapBuffers; |
| 119 | #endif |
| 120 | device->SetCaption = NULL; |
| 121 | device->SetIcon = NULL; |
| 122 | device->IconifyWindow = NULL; |
| 123 | device->GrabInput = NULL; |
| 124 | device->GetWMInfo = NULL; |
| 125 | device->InitOSKeymap = DC_InitOSKeymap; |
| 126 | device->PumpEvents = DC_PumpEvents; |
| 127 | |
| 128 | device->free = DC_DeleteDevice; |
| 129 | |
| 130 | return device; |
| 131 | } |
| 132 | |
| 133 | VideoBootStrap DC_bootstrap = { |
| 134 | "dcvideo", "Dreamcast Video", |
| 135 | DC_Available, DC_CreateDevice |
| 136 | }; |
| 137 | |
| 138 | |
| 139 | int DC_VideoInit(_THIS, SDL_PixelFormat *vformat) |
| 140 | { |
| 141 | /* Determine the screen depth (use default 16-bit depth) */ |
| 142 | /* we change this during the SDL_SetVideoMode implementation... */ |
| 143 | vformat->BitsPerPixel = 16; |
| 144 | vformat->Rmask = 0x0000f800; |
| 145 | vformat->Gmask = 0x000007e0; |
| 146 | vformat->Bmask = 0x0000001f; |
| 147 | |
| 148 | /* We're done! */ |
| 149 | return(0); |
| 150 | } |
| 151 | |
| 152 | const static SDL_Rect |
| 153 | RECT_800x600 = {0,0,800,600}, |
| 154 | RECT_640x480 = {0,0,640,480}, |
| 155 | RECT_320x240 = {0,0,320,240}; |
| 156 | const static SDL_Rect *vid_modes[] = { |
| 157 | &RECT_800x600, |
| 158 | &RECT_640x480, |
| 159 | &RECT_320x240, |
| 160 | NULL |
| 161 | }; |
| 162 | |
| 163 | SDL_Rect **DC_ListModes(_THIS, SDL_PixelFormat *format, Uint32 flags) |
| 164 | { |
| 165 | switch(format->BitsPerPixel) { |
| 166 | case 15: |
| 167 | case 16: |
| 168 | return &vid_modes; |
| 169 | case 32: |
| 170 | if (!(flags & SDL_OPENGL)) |
| 171 | return &vid_modes; |
| 172 | default: |
| 173 | return NULL; |
| 174 | } |
| 175 | // return (SDL_Rect **) -1; |
| 176 | } |
| 177 | |
| 178 | pvr_init_params_t params = { |
| 179 | /* Enable opaque and translucent polygons with size 16 */ |
| 180 | { PVR_BINSIZE_16, PVR_BINSIZE_0, PVR_BINSIZE_16, PVR_BINSIZE_0, PVR_BINSIZE_16 }, |
| 181 | |
| 182 | /* Vertex buffer size */ |
| 183 | 512*1024 |
| 184 | }; |
| 185 | |
| 186 | #if SDL_VIDEO_OPENGL |
| 187 | static int pvr_inited; |
| 188 | #endif |
| 189 | |
| 190 | SDL_Surface *DC_SetVideoMode(_THIS, SDL_Surface *current, |
| 191 | int width, int height, int bpp, Uint32 flags) |
| 192 | { |
| 193 | int disp_mode,pixel_mode,pitch; |
| 194 | Uint32 Rmask, Gmask, Bmask; |
| 195 | |
| 196 | if (width==320 && height==240) disp_mode=DM_320x240; |
| 197 | else if (width==640 && height==480) disp_mode=DM_640x480; |
| 198 | else if (width==800 && height==600) disp_mode=DM_800x608; |
| 199 | else { |
| 200 | SDL_SetError("Couldn't find requested mode in list"); |
| 201 | return(NULL); |
| 202 | } |
| 203 | |
| 204 | switch(bpp) { |
| 205 | case 15: pixel_mode = PM_RGB555; pitch = width*2; |
| 206 | /* 5-5-5 */ |
| 207 | Rmask = 0x00007c00; |
| 208 | Gmask = 0x000003e0; |
| 209 | Bmask = 0x0000001f; |
| 210 | break; |
| 211 | case 16: pixel_mode = PM_RGB565; pitch = width*2; |
| 212 | /* 5-6-5 */ |
| 213 | Rmask = 0x0000f800; |
| 214 | Gmask = 0x000007e0; |
| 215 | Bmask = 0x0000001f; |
| 216 | break; |
| 217 | case 24: bpp = 32; |
| 218 | case 32: pixel_mode = PM_RGB888; pitch = width*4; |
| 219 | Rmask = 0x00ff0000; |
| 220 | Gmask = 0x0000ff00; |
| 221 | Bmask = 0x000000ff; |
| 222 | #if SDL_VIDEO_OPENGL |
| 223 | if (!(flags & SDL_OPENGL)) |
| 224 | #endif |
| 225 | break; |
| 226 | default: |
| 227 | SDL_SetError("Couldn't find requested mode in list"); |
| 228 | return(NULL); |
| 229 | } |
| 230 | |
| 231 | // if ( bpp != current->format->BitsPerPixel ) { |
| 232 | if ( ! SDL_ReallocFormat(current, bpp, Rmask, Gmask, Bmask, 0) ) { |
| 233 | return(NULL); |
| 234 | } |
| 235 | // } |
| 236 | |
| 237 | /* Set up the new mode framebuffer */ |
| 238 | current->flags = (SDL_FULLSCREEN|SDL_HWSURFACE); |
| 239 | current->w = width; |
| 240 | current->h = height; |
| 241 | current->pitch = pitch; |
| 242 | |
| 243 | #if SDL_VIDEO_OPENGL |
| 244 | if (pvr_inited) { |
| 245 | pvr_inited = 0; |
| 246 | pvr_shutdown(); |
| 247 | } |
| 248 | #endif |
| 249 | |
| 250 | vid_set_mode(disp_mode,pixel_mode); |
| 251 | |
| 252 | current->pixels = vram_s; |
| 253 | |
| 254 | #if SDL_VIDEO_OPENGL |
| 255 | if (flags & SDL_OPENGL) { |
| 256 | this->gl_config.driver_loaded = 1; |
| 257 | current->flags = SDL_FULLSCREEN | SDL_OPENGL; |
| 258 | current->pixels = NULL; |
| 259 | pvr_inited = 1; |
| 260 | pvr_init(¶ms); |
| 261 | glKosInit(); |
| 262 | glKosBeginFrame(); |
| 263 | } else |
| 264 | #endif |
| 265 | if (flags | SDL_DOUBLEBUF) { |
| 266 | current->flags |= SDL_DOUBLEBUF; |
| 267 | current->pixels = (void*)((int)current->pixels | 0x400000); |
| 268 | } |
| 269 | |
| 270 | /* We're done */ |
| 271 | return(current); |
| 272 | } |
| 273 | |
| 274 | /* We don't actually allow hardware surfaces other than the main one */ |
| 275 | static int DC_AllocHWSurface(_THIS, SDL_Surface *surface) |
| 276 | { |
| 277 | return(-1); |
| 278 | } |
| 279 | static void DC_FreeHWSurface(_THIS, SDL_Surface *surface) |
| 280 | { |
| 281 | return; |
| 282 | } |
| 283 | |
| 284 | /* We need to wait for vertical retrace on page flipped displays */ |
| 285 | static int DC_LockHWSurface(_THIS, SDL_Surface *surface) |
| 286 | { |
| 287 | return(0); |
| 288 | } |
| 289 | |
| 290 | static void DC_UnlockHWSurface(_THIS, SDL_Surface *surface) |
| 291 | { |
| 292 | return; |
| 293 | } |
| 294 | |
| 295 | static int DC_FlipHWSurface(_THIS, SDL_Surface *surface) |
| 296 | { |
| 297 | if (surface->flags & SDL_DOUBLEBUF) { |
| 298 | vid_set_start((int)surface->pixels & 0xffffff); |
| 299 | surface->pixels = (void*)((int)surface->pixels ^ 0x400000); |
| 300 | } |
| 301 | return(0); |
| 302 | } |
| 303 | |
| 304 | static void DC_UpdateRects(_THIS, int numrects, SDL_Rect *rects) |
| 305 | { |
| 306 | /* do nothing. */ |
| 307 | } |
| 308 | |
| 309 | static int DC_SetColors(_THIS, int firstcolor, int ncolors, SDL_Color *colors) |
| 310 | { |
| 311 | /* do nothing of note. */ |
| 312 | return(1); |
| 313 | } |
| 314 | |
| 315 | /* Note: If we are terminated, this could be called in the middle of |
| 316 | another SDL video routine -- notably UpdateRects. |
| 317 | */ |
| 318 | static void DC_VideoQuit(_THIS) |
| 319 | { |
| 320 | #if SDL_VIDEO_OPENGL |
| 321 | if (pvr_inited) { |
| 322 | pvr_inited = 0; |
| 323 | pvr_shutdown(); |
| 324 | } |
| 325 | #endif |
| 326 | } |
| 327 | |
| 328 | #if SDL_VIDEO_OPENGL |
| 329 | |
| 330 | void dmyfunc(void) {} |
| 331 | |
| 332 | typedef void (*funcptr)(); |
| 333 | const static struct { |
| 334 | char *name; |
| 335 | funcptr addr; |
| 336 | } glfuncs[] = { |
| 337 | #define DEF(func) {#func,&func} |
| 338 | DEF(glBegin), |
| 339 | DEF(glBindTexture), |
| 340 | DEF(glBlendFunc), |
| 341 | DEF(glColor4f), |
| 342 | // DEF(glCopyImageID), |
| 343 | DEF(glDisable), |
| 344 | DEF(glEnable), |
| 345 | DEF(glEnd), |
| 346 | DEF(glFlush), |
| 347 | DEF(glGenTextures), |
| 348 | DEF(glGetString), |
| 349 | DEF(glLoadIdentity), |
| 350 | DEF(glMatrixMode), |
| 351 | DEF(glOrtho), |
| 352 | DEF(glPixelStorei), |
| 353 | // DEF(glPopAttrib), |
| 354 | // DEF(glPopClientAttrib), |
| 355 | {"glPopAttrib",&dmyfunc}, |
| 356 | {"glPopClientAttrib",&dmyfunc}, |
| 357 | DEF(glPopMatrix), |
| 358 | // DEF(glPushAttrib), |
| 359 | // DEF(glPushClientAttrib), |
| 360 | {"glPushAttrib",&dmyfunc}, |
| 361 | {"glPushClientAttrib",&dmyfunc}, |
| 362 | DEF(glPushMatrix), |
| 363 | DEF(glTexCoord2f), |
| 364 | DEF(glTexEnvf), |
| 365 | DEF(glTexImage2D), |
| 366 | DEF(glTexParameteri), |
| 367 | DEF(glTexSubImage2D), |
| 368 | DEF(glVertex2i), |
| 369 | DEF(glViewport), |
| 370 | #undef DEF |
| 371 | }; |
| 372 | |
| 373 | static void *DC_GL_GetProcAddress(_THIS, const char *proc) |
| 374 | { |
| 375 | void *ret; |
| 376 | int i; |
| 377 | |
| 378 | ret = glKosGetProcAddress(proc); |
| 379 | if (ret) return ret; |
| 380 | |
| 381 | for(i=0;i<sizeof(glfuncs)/sizeof(glfuncs[0]);i++) { |
| 382 | if (SDL_strcmp(proc,glfuncs[i].name)==0) return glfuncs[i].addr; |
| 383 | } |
| 384 | |
| 385 | return NULL; |
| 386 | } |
| 387 | |
| 388 | static int DC_GL_LoadLibrary(_THIS, const char *path) |
| 389 | { |
| 390 | this->gl_config.driver_loaded = 1; |
| 391 | |
| 392 | return 0; |
| 393 | } |
| 394 | |
| 395 | static int DC_GL_GetAttribute(_THIS, SDL_GLattr attrib, int* value) |
| 396 | { |
| 397 | GLenum mesa_attrib; |
| 398 | int val; |
| 399 | |
| 400 | switch(attrib) { |
| 401 | case SDL_GL_RED_SIZE: |
| 402 | val = 5; |
| 403 | break; |
| 404 | case SDL_GL_GREEN_SIZE: |
| 405 | val = 6; |
| 406 | break; |
| 407 | case SDL_GL_BLUE_SIZE: |
| 408 | val = 5; |
| 409 | break; |
| 410 | case SDL_GL_ALPHA_SIZE: |
| 411 | val = 0; |
| 412 | break; |
| 413 | case SDL_GL_DOUBLEBUFFER: |
| 414 | val = 1; |
| 415 | break; |
| 416 | case SDL_GL_DEPTH_SIZE: |
| 417 | val = 16; /* or 32? */ |
| 418 | break; |
| 419 | case SDL_GL_STENCIL_SIZE: |
| 420 | val = 0; |
| 421 | break; |
| 422 | case SDL_GL_ACCUM_RED_SIZE: |
| 423 | val = 0; |
| 424 | break; |
| 425 | case SDL_GL_ACCUM_GREEN_SIZE: |
| 426 | val = 0; |
| 427 | case SDL_GL_ACCUM_BLUE_SIZE: |
| 428 | val = 0; |
| 429 | break; |
| 430 | case SDL_GL_ACCUM_ALPHA_SIZE: |
| 431 | val = 0; |
| 432 | break; |
| 433 | default : |
| 434 | return -1; |
| 435 | } |
| 436 | *value = val; |
| 437 | return 0; |
| 438 | } |
| 439 | |
| 440 | static void DC_GL_SwapBuffers(_THIS) |
| 441 | { |
| 442 | glKosFinishFrame(); |
| 443 | glKosBeginFrame(); |
| 444 | } |
| 445 | #endif |