Mercurial > sdl-ios-xcode
annotate src/video/win32/SDL_gapirender.c @ 3583:65f66674b7fb
Allocate memory only if we're going to overwrite an environment variable
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 16 Dec 2009 16:08:17 +0000 |
| parents | 83518f8fcd61 |
| children | ce7d4942d18b |
| rev | line source |
|---|---|
| 3168 | 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 Stefan Klug | |
| 23 klug.stefan@gmx.de | |
| 24 */ | |
| 25 #include "SDL_config.h" | |
| 26 | |
| 27 #if SDL_VIDEO_RENDER_GAPI | |
| 28 | |
| 29 #include "SDL_win32video.h" | |
| 30 //#include "../SDL_sysvideo.h" | |
| 31 #include "../SDL_yuv_sw_c.h" | |
| 32 #include "../SDL_renderer_sw.h" | |
| 33 | |
| 34 #include "SDL_gapirender_c.h" | |
| 35 | |
| 36 #define GAPI_RENDERER_DEBUG 1 | |
| 37 | |
| 38 /* GAPI renderer implementation */ | |
| 39 | |
| 40 static SDL_Renderer *GAPI_CreateRenderer(SDL_Window * window, Uint32 flags); | |
| 41 static int GAPI_RenderPoint(SDL_Renderer * renderer, int x, int y); | |
| 42 static int GAPI_RenderLine(SDL_Renderer * renderer, int x1, int y1, | |
| 43 int x2, int y2); | |
| 44 static int GAPI_RenderFill(SDL_Renderer * renderer, const SDL_Rect * rect); | |
| 45 static int GAPI_RenderCopy(SDL_Renderer * renderer, | |
| 46 SDL_Texture * texture, | |
| 47 const SDL_Rect * srcrect, | |
| 48 const SDL_Rect * dstrect); | |
| 49 static void GAPI_RenderPresent(SDL_Renderer * renderer); | |
| 50 static void GAPI_DestroyRenderer(SDL_Renderer * renderer); | |
| 51 | |
| 52 | |
| 53 SDL_RenderDriver GAPI_RenderDriver = { | |
| 54 GAPI_CreateRenderer, | |
| 55 { | |
| 56 "gapi", | |
| 57 (SDL_RENDERER_SINGLEBUFFER), | |
| 58 } | |
| 59 }; | |
| 60 | |
| 61 static HMODULE g_hGapiLib = 0; | |
| 62 | |
| 63 // for testing with GapiEmu | |
| 64 #define USE_GAPI_EMU 0 | |
| 65 #define EMULATE_AXIM_X30 0 | |
| 66 | |
| 67 #if 0 | |
| 68 #define GAPI_LOG(...) printf(__VA_ARGS__) | |
| 69 #else | |
| 70 #define GAPI_LOG(...) | |
| 71 #endif | |
| 72 | |
| 73 | |
| 74 #if USE_GAPI_EMU && !REPORT_VIDEO_INFO | |
| 75 #pragma message("Warning: Using GapiEmu in release build. I assume you'd like to set USE_GAPI_EMU to zero.") | |
| 76 #endif | |
| 77 | |
| 78 | |
| 79 static void | |
| 80 GAPI_SetError(const char *prefix, HRESULT result) | |
| 81 { | |
| 82 const char *error; | |
| 83 | |
| 84 switch (result) { | |
| 85 default: | |
| 86 error = "UNKNOWN"; | |
| 87 break; | |
| 88 } | |
| 89 SDL_SetError("%s: %s", prefix, error); | |
| 90 } | |
| 91 | |
| 92 void | |
| 93 GAPI_AddRenderDriver(_THIS) | |
| 94 { | |
|
3520
83518f8fcd61
Fixed calls to SDL_AddRenderDriver()
Sam Lantinga <slouken@libsdl.org>
parents:
3168
diff
changeset
|
95 int i; |
|
83518f8fcd61
Fixed calls to SDL_AddRenderDriver()
Sam Lantinga <slouken@libsdl.org>
parents:
3168
diff
changeset
|
96 |
| 3168 | 97 /* TODO: should we check for support of GetRawFramebuffer here? |
| 98 */ | |
| 99 #if USE_GAPI_EMU | |
| 100 g_hGapiLib = LoadLibrary(L"GAPI_Emu.dll"); | |
| 101 #else | |
| 102 g_hGapiLib = LoadLibrary(L"\\Windows\\gx.dll"); | |
| 103 #endif | |
| 104 | |
| 105 if (g_hGapiLib) { | |
| 106 #define LINK(name,import) gx.name = (PFN##name)GetProcAddress( g_hGapiLib, L##import ); | |
| 107 | |
| 108 LINK(GXOpenDisplay, "?GXOpenDisplay@@YAHPAUHWND__@@K@Z") | |
| 109 LINK(GXCloseDisplay, "?GXCloseDisplay@@YAHXZ") | |
| 110 LINK(GXBeginDraw, "?GXBeginDraw@@YAPAXXZ") | |
| 111 LINK(GXEndDraw, "?GXEndDraw@@YAHXZ") | |
| 112 LINK(GXOpenInput, "?GXOpenInput@@YAHXZ") | |
| 113 LINK(GXCloseInput, "?GXCloseInput@@YAHXZ") | |
| 114 LINK(GXGetDisplayProperties, | |
| 115 "?GXGetDisplayProperties@@YA?AUGXDisplayProperties@@XZ") | |
| 116 LINK(GXGetDefaultKeys, "?GXGetDefaultKeys@@YA?AUGXKeyList@@H@Z") | |
| 117 LINK(GXSuspend, "?GXSuspend@@YAHXZ") | |
| 118 LINK(GXResume, "?GXResume@@YAHXZ") | |
| 119 LINK(GXSetViewport, "?GXSetViewport@@YAHKKKK@Z") | |
| 120 LINK(GXIsDisplayDRAMBuffer, "?GXIsDisplayDRAMBuffer@@YAHXZ") | |
| 121 | |
| 122 /* wrong gapi.dll */ | |
| 123 if (!gx.GXOpenDisplay) { | |
| 124 FreeLibrary(g_hGapiLib); | |
| 125 g_hGapiLib = 0; | |
| 126 } | |
| 127 #undef LINK | |
| 128 } | |
| 129 | |
|
3520
83518f8fcd61
Fixed calls to SDL_AddRenderDriver()
Sam Lantinga <slouken@libsdl.org>
parents:
3168
diff
changeset
|
130 for (i = 0; i < _this->num_displays; ++i) { |
|
83518f8fcd61
Fixed calls to SDL_AddRenderDriver()
Sam Lantinga <slouken@libsdl.org>
parents:
3168
diff
changeset
|
131 SDL_AddRenderDriver(&_this->displays[i], &GAPI_RenderDriver); |
|
83518f8fcd61
Fixed calls to SDL_AddRenderDriver()
Sam Lantinga <slouken@libsdl.org>
parents:
3168
diff
changeset
|
132 } |
| 3168 | 133 } |
| 134 | |
| 135 typedef enum | |
| 136 { | |
| 137 USAGE_GX_FUNCS = 0x0001, /* enable to use GXOpen/GXClose/GXBeginDraw... */ | |
| 138 USAGE_DATA_PTR_CONSTANT = 0x0002 /* the framebuffer is at a constant location, don't use values from GXBeginDraw() */ | |
| 139 } GAPI_UsageFlags; | |
| 140 | |
| 141 | |
| 142 | |
| 143 typedef struct | |
| 144 { | |
| 145 int w; | |
| 146 int h; | |
| 147 int xPitch; /* bytes to move to go to the next pixel */ | |
| 148 int yPitch; /* bytes to move to go to the next line */ | |
| 149 int offset; /* data offset, to add to the data returned from GetFramebuffer, before processing */ | |
| 150 | |
| 151 void *data; | |
| 152 Uint32 usageFlags; /* these flags contain options to define screen handling and to reliably workarounds */ | |
| 153 | |
| 154 Uint32 format; /* pixel format as defined in SDL_pixels.h */ | |
| 155 | |
| 156 } GAPI_RenderData; | |
| 157 | |
| 158 | |
| 159 static Uint32 | |
| 160 GuessPixelFormatFromBpp(int bpp) | |
| 161 { | |
| 162 switch (bpp) { | |
| 163 case 15: | |
| 164 return SDL_PIXELFORMAT_RGB555; | |
| 165 case 16: | |
| 166 return SDL_PIXELFORMAT_RGB565; | |
| 167 default: | |
| 168 return SDL_PIXELFORMAT_UNKNOWN; | |
| 169 break; | |
| 170 } | |
| 171 } | |
| 172 | |
| 173 static GAPI_RenderData * | |
| 174 FillRenderDataRawFramebuffer(SDL_Window * window) | |
| 175 { | |
| 176 RawFrameBufferInfo rbi; | |
| 177 GAPI_RenderData *renderdata; | |
| 178 HDC hdc; | |
| 179 | |
| 180 //TODO should we use the hdc of the window? | |
| 181 hdc = GetDC(NULL); | |
| 182 int result = ExtEscape(hdc, GETRAWFRAMEBUFFER, 0, NULL, | |
| 183 sizeof(RawFrameBufferInfo), | |
| 184 (char *) &rbi); | |
| 185 ReleaseDC(NULL, hdc); | |
| 186 | |
| 187 if (!(result > 0)) { | |
| 188 return NULL; | |
| 189 } | |
| 190 | |
| 191 /* Asus A696 returns wrong results so we do a sanity check | |
| 192 See: | |
| 193 http://groups.google.com/group/microsoft.public.smartphone.developer/browse_thread/thread/4fde5bddd477de81 | |
| 194 */ | |
| 195 if (rbi.cxPixels <= 0 || | |
| 196 rbi.cyPixels <= 0 || | |
| 197 rbi.cxStride == 0 || rbi.cyStride == 0 || rbi.pFramePointer == 0) { | |
| 198 return NULL; | |
| 199 } | |
| 200 | |
| 201 | |
| 202 renderdata = (GAPI_RenderData *) SDL_calloc(1, sizeof(*renderdata)); | |
| 203 if (!renderdata) { | |
| 204 SDL_OutOfMemory(); | |
| 205 return NULL; | |
| 206 } | |
| 207 //Try to match the window size | |
| 208 //TODO add rotation support | |
| 209 if (rbi.cxPixels != window->w || rbi.cyPixels != window->h) { | |
| 210 SDL_free(renderdata); | |
| 211 return NULL; | |
| 212 } | |
| 213 //Check that the display uses a known display format | |
| 214 switch (rbi.wFormat) { | |
| 215 case FORMAT_565: | |
| 216 renderdata->format = SDL_PIXELFORMAT_RGB565; | |
| 217 break; | |
| 218 case FORMAT_555: | |
| 219 renderdata->format = SDL_PIXELFORMAT_RGB555; | |
| 220 break; | |
| 221 default: | |
| 222 //TODO we should add support for other formats | |
| 223 SDL_free(renderdata); | |
| 224 return NULL; | |
| 225 } | |
| 226 | |
| 227 renderdata->usageFlags = USAGE_DATA_PTR_CONSTANT; | |
| 228 renderdata->data = rbi.pFramePointer; | |
| 229 renderdata->w = rbi.cxPixels; | |
| 230 renderdata->h = rbi.cyPixels; | |
| 231 renderdata->xPitch = rbi.cxStride; | |
| 232 renderdata->yPitch = rbi.cyStride; | |
| 233 | |
| 234 return renderdata; | |
| 235 | |
| 236 } | |
| 237 | |
| 238 | |
| 239 static GAPI_RenderData * | |
| 240 FillRenderDataGAPI(SDL_Window * window) | |
| 241 { | |
| 242 GAPI_RenderData *renderdata; | |
| 243 struct GXDisplayProperties gxdp; | |
| 244 int tmp; | |
| 245 | |
| 246 #ifdef _ARM_ | |
| 247 WCHAR oemstr[100]; | |
| 248 #endif | |
| 249 | |
| 250 if (!g_hGapiLib) { | |
| 251 return NULL; | |
| 252 } | |
| 253 | |
| 254 renderdata = (GAPI_RenderData *) SDL_calloc(1, sizeof(GAPI_RenderData)); | |
| 255 if (!renderdata) { | |
| 256 SDL_OutOfMemory(); | |
| 257 return NULL; | |
| 258 } | |
| 259 | |
| 260 gxdp = gx.GXGetDisplayProperties(); | |
| 261 renderdata->usageFlags = USAGE_GX_FUNCS; | |
| 262 renderdata->w = gxdp.cxWidth; | |
| 263 renderdata->h = gxdp.cyHeight; | |
| 264 renderdata->xPitch = gxdp.cbxPitch; | |
| 265 renderdata->yPitch = gxdp.cbyPitch; | |
| 266 | |
| 267 //Check that the display uses a known display format | |
| 268 if (gxdp.ffFormat & kfDirect565) { | |
| 269 renderdata->format = SDL_PIXELFORMAT_RGB565; | |
| 270 } else if (gxdp.ffFormat & kfDirect555) { | |
| 271 renderdata->format = SDL_PIXELFORMAT_RGB555; | |
| 272 } else { | |
| 273 renderdata->format = SDL_PIXELFORMAT_UNKNOWN; | |
| 274 } | |
| 275 | |
| 276 /* apply some device specific corrections */ | |
| 277 #ifdef _ARM_ | |
| 278 SystemParametersInfo(SPI_GETOEMINFO, sizeof(oemstr), oemstr, 0); | |
| 279 | |
| 280 // buggy iPaq38xx | |
| 281 if ((oemstr[12] == 'H') && (oemstr[13] == '3') | |
| 282 && (oemstr[14] == '8') | |
| 283 && (gxdp.cbxPitch > 0)) { | |
| 284 renderdata->data = (void *) 0xac0755a0; | |
| 285 renderdata->xPitch = -640; | |
| 286 renderdata->yPitch = 2; | |
| 287 } | |
| 288 #if (EMULATE_AXIM_X30 == 0) | |
| 289 // buggy Dell Axim X30 | |
| 290 if (_tcsncmp(oemstr, L"Dell Axim X30", 13) == 0) | |
| 291 #endif | |
| 292 { | |
| 293 GXDeviceInfo gxInfo = { 0 }; | |
| 294 HDC hdc = GetDC(NULL); | |
| 295 int result; | |
| 296 | |
| 297 gxInfo.Version = 100; | |
| 298 result = | |
| 299 ExtEscape(hdc, GETGXINFO, 0, NULL, sizeof(gxInfo), | |
| 300 (char *) &gxInfo); | |
| 301 if (result > 0) { | |
| 302 renderdata->usageFlags = USAGE_DATA_PTR_CONSTANT; /* no more GAPI usage from now */ | |
| 303 renderdata->data = gxInfo.pvFrameBuffer; | |
| 304 this->hidden->needUpdate = 0; | |
| 305 renderdata->xPitch = 2; | |
| 306 renderdata->yPitch = 480; | |
| 307 renderdata->w = gxInfo.cxWidth; | |
| 308 renderdata->h = gxInfo.cyHeight; | |
| 309 | |
| 310 //Check that the display uses a known display format | |
| 311 switch (rbi->wFormat) { | |
| 312 case FORMAT_565: | |
| 313 renderdata->format = SDL_PIXELFORMAT_RGB565; | |
| 314 break; | |
| 315 case FORMAT_555: | |
| 316 renderdata->format = SDL_PIXELFORMAT_RGB555; | |
| 317 break; | |
| 318 default: | |
| 319 //TODO we should add support for other formats | |
| 320 SDL_free(renderdata); | |
| 321 return NULL; | |
| 322 } | |
| 323 } | |
| 324 } | |
| 325 #endif | |
| 326 | |
| 327 | |
| 328 if (renderdata->format == SDL_PIXELFORMAT_UNKNOWN) { | |
| 329 SDL_SetError("Gapi Pixelformat is unknown"); | |
| 330 SDL_free(renderdata); | |
| 331 return NULL; | |
| 332 } | |
| 333 | |
| 334 /* Gapi always returns values in standard orientation, so we manually apply | |
| 335 the current orientation | |
| 336 */ | |
| 337 | |
| 338 DEVMODE settings; | |
| 339 SDL_memset(&settings, 0, sizeof(DEVMODE)); | |
| 340 settings.dmSize = sizeof(DEVMODE); | |
| 341 | |
| 342 settings.dmFields = DM_DISPLAYORIENTATION; | |
| 343 ChangeDisplaySettingsEx(NULL, &settings, NULL, CDS_TEST, NULL); | |
| 344 | |
| 345 if (settings.dmDisplayOrientation == DMDO_90) { | |
| 346 | |
| 347 tmp = renderdata->w; | |
| 348 renderdata->w = renderdata->h; | |
| 349 renderdata->h = tmp; | |
| 350 | |
| 351 tmp = renderdata->xPitch; | |
| 352 renderdata->xPitch = -renderdata->yPitch; | |
| 353 renderdata->yPitch = tmp; | |
| 354 | |
| 355 renderdata->offset = -renderdata->w * renderdata->xPitch; | |
| 356 | |
| 357 } else if (settings.dmDisplayOrientation == DMDO_180) { | |
| 358 | |
| 359 renderdata->xPitch = -renderdata->xPitch; | |
| 360 renderdata->yPitch = -renderdata->yPitch; | |
| 361 | |
| 362 renderdata->offset = -renderdata->h * renderdata->yPitch | |
| 363 - renderdata->w * renderdata->xPitch; | |
| 364 | |
| 365 } else if (settings.dmDisplayOrientation == DMDO_270) { | |
| 366 | |
| 367 tmp = renderdata->w; | |
| 368 renderdata->w = renderdata->h; | |
| 369 renderdata->h = tmp; | |
| 370 | |
| 371 tmp = renderdata->xPitch; | |
| 372 renderdata->xPitch = renderdata->yPitch; | |
| 373 renderdata->yPitch = -tmp; | |
| 374 | |
| 375 renderdata->offset = -renderdata->h * renderdata->yPitch; | |
| 376 | |
| 377 } | |
| 378 | |
| 379 if (renderdata->w != window->w || renderdata->h != window->h) { | |
| 380 GAPI_LOG("GAPI open failed, wrong size %i %i %i %i\n", renderdata->w, | |
| 381 renderdata->h, renderdata->xPitch, renderdata->yPitch); | |
| 382 SDL_free(renderdata); | |
| 383 return NULL; | |
| 384 } | |
| 385 | |
| 386 return renderdata; | |
| 387 | |
| 388 } | |
| 389 | |
| 390 | |
| 391 /* This function does the whole encapsulation of Gapi/RAWFRAMEBUFFER | |
| 392 it should handle all the device dependent details and fill the device INDEPENDENT | |
| 393 RenderData structure. | |
| 394 */ | |
| 395 GAPI_RenderData * | |
| 396 FillRenderData(SDL_Window * window) | |
| 397 { | |
| 398 /* We try to match the requested window to the modes available by GAPI and RAWFRAMEBUFFER. | |
| 399 First RAWFRAMEBUFFER is tried, as it is the most reliable one | |
| 400 Look here for detailed discussions: | |
| 401 http://pdaphonehome.com/forums/samsung-i700/28087-just-saw.html | |
| 402 http://blogs.msdn.com/windowsmobile/archive/2007/08/13/have-you-migrated-to-directdraw-yet.aspx | |
| 403 */ | |
| 404 | |
| 405 GAPI_RenderData *res; | |
| 406 | |
| 407 res = FillRenderDataRawFramebuffer(window); | |
| 408 GAPI_LOG("FillRenderDataRawFramebuffer: %p\n", res); | |
| 409 if (res) { | |
| 410 return res; | |
| 411 } | |
| 412 //Now we try gapi | |
| 413 res = FillRenderDataGAPI(window); | |
| 414 GAPI_LOG("FillRenderDataGAPI: %p\n", res); | |
| 415 | |
| 416 return res; | |
| 417 } | |
| 418 | |
| 419 void * | |
| 420 GetFramebuffer() | |
| 421 { | |
| 422 | |
| 423 } | |
| 424 | |
| 425 | |
| 426 SDL_Renderer * | |
| 427 GAPI_CreateRenderer(SDL_Window * window, Uint32 flags) | |
| 428 { | |
| 429 SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window); | |
| 430 SDL_WindowData *windowdata = (SDL_WindowData *) window->driverdata; | |
| 431 SDL_DisplayMode *displayMode = &display->current_mode; | |
| 432 SDL_Renderer *renderer; | |
| 433 GAPI_RenderData *data; | |
| 434 int i, n; | |
| 435 int bpp; | |
| 436 Uint32 Rmask, Gmask, Bmask, Amask; | |
| 437 | |
| 438 if (!(window->flags & SDL_WINDOW_FULLSCREEN)) { | |
| 439 SDL_SetError("Gapi supports only fullscreen windows"); | |
| 440 return NULL; | |
| 441 } | |
| 442 | |
| 443 if (!SDL_PixelFormatEnumToMasks | |
| 444 (displayMode->format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) { | |
| 445 SDL_SetError("Unknown display format"); | |
| 446 return NULL; | |
| 447 } | |
| 448 | |
| 449 renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer)); | |
| 450 if (!renderer) { | |
| 451 SDL_OutOfMemory(); | |
| 452 return NULL; | |
| 453 } | |
| 454 | |
| 455 data = FillRenderData(window); | |
| 456 if (!data) { | |
| 457 GAPI_DestroyRenderer(renderer); | |
| 458 SDL_OutOfMemory(); | |
| 459 return NULL; | |
| 460 } | |
| 461 | |
| 462 renderer->RenderPoint = GAPI_RenderPoint; | |
| 463 renderer->RenderLine = GAPI_RenderLine; | |
| 464 renderer->RenderFill = GAPI_RenderFill; | |
| 465 renderer->RenderCopy = GAPI_RenderCopy; | |
| 466 renderer->RenderPresent = GAPI_RenderPresent; | |
| 467 renderer->DestroyRenderer = GAPI_DestroyRenderer; | |
| 468 renderer->info.name = GAPI_RenderDriver.info.name; | |
| 469 renderer->info.flags = 0; | |
| 470 renderer->window = window->id; | |
| 471 renderer->driverdata = data; | |
| 472 | |
| 473 /* Gapi provides only a framebuffer so lets use software implementation */ | |
| 474 Setup_SoftwareRenderer(renderer); | |
| 475 | |
| 476 #ifdef GAPI_RENDERER_DEBUG | |
| 477 printf("Created gapi renderer\n"); | |
| 478 printf("use GX functions: %i\n", data->usageFlags & USAGE_GX_FUNCS); | |
| 479 printf("framebuffer is constant: %i\n", | |
| 480 data->usageFlags & USAGE_DATA_PTR_CONSTANT); | |
| 481 printf("w: %i h: %i\n", data->w, data->h); | |
| 482 printf("data ptr: %p\n", data->data); /* this can be 0 in case of GAPI usage */ | |
| 483 printf("xPitch: %i\n", data->xPitch); | |
| 484 printf("yPitch: %i\n", data->yPitch); | |
| 485 printf("offset: %i\n", data->offset); | |
| 486 printf("format: %x\n", data->format); | |
| 487 #endif | |
| 488 | |
| 489 if (data->usageFlags & USAGE_GX_FUNCS) { | |
| 490 if (gx.GXOpenDisplay(windowdata->hwnd, GX_FULLSCREEN) == 0) { | |
| 491 GAPI_DestroyRenderer(renderer); | |
| 492 return NULL; | |
| 493 } | |
| 494 } | |
| 495 | |
| 496 return renderer; | |
| 497 } | |
| 498 | |
| 499 static int | |
| 500 GAPI_RenderPoint(SDL_Renderer * renderer, int x, int y) | |
| 501 { | |
| 502 //TODO implement | |
| 503 return -1; | |
| 504 } | |
| 505 | |
| 506 static int | |
| 507 GAPI_RenderLine(SDL_Renderer * renderer, int x1, int y1, int x2, int y2) | |
| 508 { | |
| 509 //TODO implement | |
| 510 return -11; | |
| 511 } | |
| 512 | |
| 513 static int | |
| 514 GAPI_RenderFill(SDL_Renderer * renderer, const SDL_Rect * rect) | |
| 515 { | |
| 516 //TODO implement | |
| 517 return -1; | |
| 518 } | |
| 519 | |
| 520 /* Video memory is very slow so lets optimize as much as possible */ | |
| 521 static void | |
| 522 updateLine16to16(char *src, int srcXPitch, int srcYPitch, | |
| 523 char *dst, int dstXPitch, int dstYPitch, int width, | |
| 524 int height) | |
| 525 { | |
| 526 char *srcLine, *dstLine; | |
| 527 char *srcPix, *dstPix; | |
| 528 | |
| 529 int x, y; | |
| 530 | |
| 531 //First dumb solution | |
| 532 if (srcXPitch == 2 && dstXPitch == 2) { | |
| 533 srcLine = src; | |
| 534 dstLine = dst; | |
| 535 y = height; | |
| 536 while (y--) { | |
| 537 SDL_memcpy(dstLine, srcLine, width * sizeof(Uint16)); | |
| 538 srcLine += srcYPitch; | |
| 539 dstLine += dstYPitch; | |
| 540 } | |
| 541 } else { | |
| 542 //printf("GAPI uses slow blit path %i, %i\n", dstXPitch, dstYPitch); | |
| 543 srcLine = src; | |
| 544 dstLine = dst; | |
| 545 y = height; | |
| 546 while (y--) { | |
| 547 srcPix = srcLine; | |
| 548 dstPix = dstLine; | |
| 549 x = width; | |
| 550 while (x--) { | |
| 551 *((Uint16 *) dstPix) = *((Uint16 *) srcPix); | |
| 552 dstPix += dstXPitch; | |
| 553 srcPix += srcXPitch; | |
| 554 } | |
| 555 srcLine += srcYPitch; | |
| 556 dstLine += dstYPitch; | |
| 557 } | |
| 558 } | |
| 559 } | |
| 560 | |
| 561 static int | |
| 562 GAPI_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture, | |
| 563 const SDL_Rect * srcrect, const SDL_Rect * dstrect) | |
| 564 { | |
| 565 GAPI_RenderData *data = (GAPI_RenderData *) renderer->driverdata; | |
| 566 int bpp; | |
| 567 int bytespp; | |
| 568 int status; | |
| 569 Uint32 Rmask, Gmask, Bmask, Amask; | |
| 570 | |
| 571 if (texture->format != data->format) { | |
| 572 SDL_SetError("Gapi got wrong texture"); | |
| 573 return -1; | |
| 574 } | |
| 575 | |
| 576 GAPI_LOG("GAPI_RenderCopy\n"); | |
| 577 | |
| 578 if (data->usageFlags & USAGE_GX_FUNCS) { | |
| 579 char *buffer; | |
| 580 buffer = gx.GXBeginDraw(); | |
| 581 if (!(data->usageFlags & USAGE_DATA_PTR_CONSTANT)) { | |
| 582 data->data = buffer; | |
| 583 } | |
| 584 } | |
| 585 | |
| 586 GAPI_LOG("GAPI_RenderCopy blit\n"); | |
| 587 /* If our framebuffer has an xPitch which matches the pixelsize, we | |
| 588 can convert the framebuffer to a SDL_surface and blit there, | |
| 589 otherwise, we have to use our own blitting routine | |
| 590 */ | |
| 591 SDL_PixelFormatEnumToMasks(data->format, &bpp, &Rmask, &Gmask, &Bmask, | |
| 592 &Amask); | |
| 593 bytespp = bpp >> 3; | |
| 594 if (data->xPitch == bytespp && 0) { | |
| 595 SDL_Surface *screen = | |
| 596 SDL_CreateRGBSurfaceFrom(data->data, data->w, data->h, | |
| 597 bpp, data->yPitch, Rmask, Gmask, Bmask, | |
| 598 Amask); | |
| 599 status = | |
| 600 SDL_UpperBlit((SDL_Surface *) texture->driverdata, srcrect, | |
| 601 screen, dstrect); | |
| 602 SDL_FreeSurface(screen); | |
| 603 } else { /* screen is rotated, we have to blit on our own */ | |
| 604 SDL_Surface *surface = (SDL_Surface *) texture->driverdata; | |
| 605 | |
| 606 char *src, *dst; | |
| 607 src = surface->pixels; | |
| 608 src += srcrect->y * surface->pitch + srcrect->x * 2; | |
| 609 | |
| 610 dst = data->data + data->offset; | |
| 611 dst += dstrect->y * data->yPitch + dstrect->x * data->xPitch; | |
| 612 | |
| 613 updateLine16to16(src, 2, surface->pitch, | |
| 614 dst, data->xPitch, data->yPitch, | |
| 615 srcrect->w, srcrect->h); | |
| 616 | |
| 617 } | |
| 618 | |
| 619 Uint32 ticks = SDL_GetTicks(); | |
| 620 if (data->usageFlags & USAGE_GX_FUNCS) { | |
| 621 gx.GXEndDraw(); | |
| 622 } | |
| 623 GAPI_LOG("GAPI_RenderCopy %i\n", SDL_GetTicks() - ticks); | |
| 624 return status; | |
| 625 } | |
| 626 | |
| 627 static void | |
| 628 GAPI_RenderPresent(SDL_Renderer * renderer) | |
| 629 { | |
| 630 /* Nothing todo as we rendered directly to the screen on RenderCopy */ | |
| 631 } | |
| 632 | |
| 633 static void | |
| 634 GAPI_DestroyRenderer(SDL_Renderer * renderer) | |
| 635 { | |
| 636 GAPI_RenderData *data = (GAPI_RenderData *) renderer->driverdata; | |
| 637 | |
| 638 if (data->usageFlags & USAGE_GX_FUNCS) { | |
| 639 gx.GXCloseDisplay(); | |
| 640 } | |
| 641 | |
| 642 if (data) { | |
| 643 SDL_free(data); | |
| 644 } | |
| 645 SDL_free(renderer); | |
| 646 } | |
| 647 | |
| 648 #endif /* SDL_VIDEO_RENDER_GAPI */ | |
| 649 | |
| 650 /* vi: set ts=4 sw=4 expandtab: */ |