vrshoot: e7ca128b8713 libs/assimp/MDLMaterialLoader.cpp

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view libs/assimp/MDLMaterialLoader.cpp @ 1:e7ca128b8713

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author	John Tsiombikas <nuclear@member.fsf.org>
date	Sun, 02 Feb 2014 00:35:22 +0200
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1 /*

2 ---------------------------------------------------------------------------

3 Open Asset Import Library (assimp)

4 ---------------------------------------------------------------------------

10 Redistribution and use of this software in source and binary forms,

11 with or without modification, are permitted provided that the following

12 conditions are met:

14 * Redistributions of source code must retain the above

15 copyright notice, this list of conditions and the

16 following disclaimer.

18 * Redistributions in binary form must reproduce the above

19 copyright notice, this list of conditions and the

20 following disclaimer in the documentation and/or other

21 materials provided with the distribution.

23 * Neither the name of the assimp team, nor the names of its

24 contributors may be used to endorse or promote products

25 derived from this software without specific prior

26 written permission of the assimp team.

28 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

29 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

30 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

31 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

32 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

33 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

34 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

35 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

36 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

37 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

38 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

39 ---------------------------------------------------------------------------

40 */

42 /** @file Implementation of the material part of the MDL importer class */

44 #include "AssimpPCH.h"

45 #ifndef ASSIMP_BUILD_NO_MDL_IMPORTER

47 // internal headers

48 #include "MDLLoader.h"

49 #include "MDLDefaultColorMap.h"

51 using namespace Assimp;

52 static aiTexel* const bad_texel = reinterpret_cast<aiTexel*>(SIZE_MAX);

54 // ------------------------------------------------------------------------------------------------

55 // Find a suitable pallette file or take teh default one

56 void MDLImporter::SearchPalette(const unsigned char** pszColorMap)

57 {

58 // now try to find the color map in the current directory

59 IOStream* pcStream = pIOHandler->Open(configPalette,"rb");

61 const unsigned char* szColorMap = (const unsigned char*)::g_aclrDefaultColorMap;

62 if(pcStream)

63 {

64 if (pcStream->FileSize() >= 768)

65 {

66 unsigned char* colorMap = new unsigned char[256*3];

67 szColorMap = colorMap;

68 pcStream->Read(colorMap,256*3,1);

69 DefaultLogger::get()->info("Found valid colormap.lmp in directory. "

70 "It will be used to decode embedded textures in palletized formats.");

71 }

72 delete pcStream;

73 pcStream = NULL;

74 }

75 *pszColorMap = szColorMap;

76 }

78 // ------------------------------------------------------------------------------------------------

79 // Free the palette again

80 void MDLImporter::FreePalette(const unsigned char* szColorMap)

81 {

82 if (szColorMap != (const unsigned char*)::g_aclrDefaultColorMap)

83 delete[] szColorMap;

84 }

86 // ------------------------------------------------------------------------------------------------

87 // Check whether we can replace a texture with a single color

88 aiColor4D MDLImporter::ReplaceTextureWithColor(const aiTexture* pcTexture)

89 {

90 ai_assert(NULL != pcTexture);

92 aiColor4D clrOut;

93 clrOut.r = get_qnan();

94 if (!pcTexture->mHeight || !pcTexture->mWidth)

95 return clrOut;

97 const unsigned int iNumPixels = pcTexture->mHeight*pcTexture->mWidth;

98 const aiTexel* pcTexel = pcTexture->pcData+1;

99 const aiTexel* const pcTexelEnd = &pcTexture->pcData[iNumPixels];

100

101 while (pcTexel != pcTexelEnd)

102 {

103 if (*pcTexel != *(pcTexel-1))

104 {

105 pcTexel = NULL;

106 break;

107 }

108 ++pcTexel;

109 }

110 if (pcTexel)

111 {

112 clrOut.r = pcTexture->pcData->r / 255.0f;

113 clrOut.g = pcTexture->pcData->g / 255.0f;

114 clrOut.b = pcTexture->pcData->b / 255.0f;

115 clrOut.a = pcTexture->pcData->a / 255.0f;

116 }

117 return clrOut;

118 }

119

120 // ------------------------------------------------------------------------------------------------

121 // Read a texture from a MDL3 file

122 void MDLImporter::CreateTextureARGB8_3DGS_MDL3(const unsigned char* szData)

123 {

124 const MDL::Header *pcHeader = (const MDL::Header*)mBuffer; //the endianess is allready corrected in the InternReadFile_3DGS_MDL345 function

125

126 VALIDATE_FILE_SIZE(szData + pcHeader->skinwidth *

127 pcHeader->skinheight);

128

129 // allocate a new texture object

130 aiTexture* pcNew = new aiTexture();

131 pcNew->mWidth = pcHeader->skinwidth;

132 pcNew->mHeight = pcHeader->skinheight;

133

134 pcNew->pcData = new aiTexel[pcNew->mWidth * pcNew->mHeight];

135

136 const unsigned char* szColorMap;

137 this->SearchPalette(&szColorMap);

138

139 // copy texture data

140 for (unsigned int i = 0; i < pcNew->mWidth*pcNew->mHeight;++i)

141 {

142 const unsigned char val = szData[i];

143 const unsigned char* sz = &szColorMap[val*3];

144

145 pcNew->pcData[i].a = 0xFF;

146 pcNew->pcData[i].r = *sz++;

147 pcNew->pcData[i].g = *sz++;

148 pcNew->pcData[i].b = *sz;

149 }

150

151 FreePalette(szColorMap);

152

153 // store the texture

154 aiTexture** pc = this->pScene->mTextures;

155 this->pScene->mTextures = new aiTexture*[pScene->mNumTextures+1];

156 for (unsigned int i = 0; i <pScene->mNumTextures;++i)

157 pScene->mTextures[i] = pc[i];

158

159 pScene->mTextures[this->pScene->mNumTextures] = pcNew;

160 pScene->mNumTextures++;

161 delete[] pc;

162 return;

163 }

164

165 // ------------------------------------------------------------------------------------------------

166 // Read a texture from a MDL4 file

167 void MDLImporter::CreateTexture_3DGS_MDL4(const unsigned char* szData,

168 unsigned int iType,

169 unsigned int* piSkip)

170 {

171 ai_assert(NULL != piSkip);

172

173 const MDL::Header *pcHeader = (const MDL::Header*)mBuffer; //the endianess is allready corrected in the InternReadFile_3DGS_MDL345 function

174

175 if (iType == 1 || iType > 3)

176 {

177 DefaultLogger::get()->error("Unsupported texture file format");

178 return;

179 }

180

181 const bool bNoRead = *piSkip == UINT_MAX;

182

183 // allocate a new texture object

184 aiTexture* pcNew = new aiTexture();

185 pcNew->mWidth = pcHeader->skinwidth;

186 pcNew->mHeight = pcHeader->skinheight;

187

188 if (bNoRead)pcNew->pcData = bad_texel;

189 ParseTextureColorData(szData,iType,piSkip,pcNew);

190

191 // store the texture

192 if (!bNoRead)

193 {

194 if (!this->pScene->mNumTextures)

195 {

196 pScene->mNumTextures = 1;

197 pScene->mTextures = new aiTexture*[1];

198 pScene->mTextures[0] = pcNew;

199 }

200 else

201 {

202 aiTexture** pc = pScene->mTextures;

203 pScene->mTextures = new aiTexture*[pScene->mNumTextures+1];

204 for (unsigned int i = 0; i < this->pScene->mNumTextures;++i)

205 pScene->mTextures[i] = pc[i];

206 pScene->mTextures[pScene->mNumTextures] = pcNew;

207 pScene->mNumTextures++;

208 delete[] pc;

209 }

210 }

211 else {

212 pcNew->pcData = NULL;

213 delete pcNew;

214 }

215 return;

216 }

217

218 // ------------------------------------------------------------------------------------------------

219 // Load color data of a texture and convert it to our output format

220 void MDLImporter::ParseTextureColorData(const unsigned char* szData,

221 unsigned int iType,

222 unsigned int* piSkip,

223 aiTexture* pcNew)

224 {

225 const bool do_read = bad_texel != pcNew->pcData;

226

227 // allocate storage for the texture image

228 if (do_read) {

229 pcNew->pcData = new aiTexel[pcNew->mWidth * pcNew->mHeight];

230 }

231

232 // R5G6B5 format (with or without MIPs)

233 // ****************************************************************

234 if (2 == iType || 10 == iType)

235 {

236 VALIDATE_FILE_SIZE(szData + pcNew->mWidth*pcNew->mHeight*2);

237

238 // copy texture data

239 unsigned int i;

240 if (do_read)

241 {

242 for (i = 0; i < pcNew->mWidth*pcNew->mHeight;++i)

243 {

244 MDL::RGB565 val = ((MDL::RGB565*)szData)[i];

245 AI_SWAP2(val);

246

247 pcNew->pcData[i].a = 0xFF;

248 pcNew->pcData[i].r = (unsigned char)val.b << 3;

249 pcNew->pcData[i].g = (unsigned char)val.g << 2;

250 pcNew->pcData[i].b = (unsigned char)val.r << 3;

251 }

252 }

253 else i = pcNew->mWidth*pcNew->mHeight;

254 *piSkip = i * 2;

255

256 // apply MIP maps

257 if (10 == iType)

258 {

259 *piSkip += ((i >> 2) + (i >> 4) + (i >> 6)) << 1;

260 VALIDATE_FILE_SIZE(szData + *piSkip);

261 }

262 }

263 // ARGB4 format (with or without MIPs)

264 // ****************************************************************

265 else if (3 == iType || 11 == iType)

266 {

267 VALIDATE_FILE_SIZE(szData + pcNew->mWidth*pcNew->mHeight*4);

268

269 // copy texture data

270 unsigned int i;

271 if (do_read)

272 {

273 for (i = 0; i < pcNew->mWidth*pcNew->mHeight;++i)

274 {

275 MDL::ARGB4 val = ((MDL::ARGB4*)szData)[i];

276 AI_SWAP2(val);

277

278 pcNew->pcData[i].a = (unsigned char)val.a << 4;

279 pcNew->pcData[i].r = (unsigned char)val.r << 4;

280 pcNew->pcData[i].g = (unsigned char)val.g << 4;

281 pcNew->pcData[i].b = (unsigned char)val.b << 4;

282 }

283 }

284 else i = pcNew->mWidth*pcNew->mHeight;

285 *piSkip = i * 2;

286

287 // apply MIP maps

288 if (11 == iType)

289 {

290 *piSkip += ((i >> 2) + (i >> 4) + (i >> 6)) << 1;

291 VALIDATE_FILE_SIZE(szData + *piSkip);

292 }

293 }

294 // RGB8 format (with or without MIPs)

295 // ****************************************************************

296 else if (4 == iType || 12 == iType)

297 {

298 VALIDATE_FILE_SIZE(szData + pcNew->mWidth*pcNew->mHeight*3);

299

300 // copy texture data

301 unsigned int i;

302 if (do_read)

303 {

304 for (i = 0; i < pcNew->mWidth*pcNew->mHeight;++i)

305 {

306 const unsigned char* _szData = &szData[i*3];

307

308 pcNew->pcData[i].a = 0xFF;

309 pcNew->pcData[i].b = *_szData++;

310 pcNew->pcData[i].g = *_szData++;

311 pcNew->pcData[i].r = *_szData;

312 }

313 }

314 else i = pcNew->mWidth*pcNew->mHeight;

315

316

317 // apply MIP maps

318 *piSkip = i * 3;

319 if (12 == iType)

320 {

321 *piSkip += ((i >> 2) + (i >> 4) + (i >> 6)) *3;

322 VALIDATE_FILE_SIZE(szData + *piSkip);

323 }

324 }

325 // ARGB8 format (with ir without MIPs)

326 // ****************************************************************

327 else if (5 == iType || 13 == iType)

328 {

329 VALIDATE_FILE_SIZE(szData + pcNew->mWidth*pcNew->mHeight*4);

330

331 // copy texture data

332 unsigned int i;

333 if (do_read)

334 {

335 for (i = 0; i < pcNew->mWidth*pcNew->mHeight;++i)

336 {

337 const unsigned char* _szData = &szData[i*4];

338

339 pcNew->pcData[i].b = *_szData++;

340 pcNew->pcData[i].g = *_szData++;

341 pcNew->pcData[i].r = *_szData++;

342 pcNew->pcData[i].a = *_szData;

343 }

344 }

345 else i = pcNew->mWidth*pcNew->mHeight;

346

347 // apply MIP maps

348 *piSkip = i << 2;

349 if (13 == iType)

350 {

351 *piSkip += ((i >> 2) + (i >> 4) + (i >> 6)) << 2;

352 }

353 }

354 // palletized 8 bit texture. As for Quake 1

355 // ****************************************************************

356 else if (0 == iType)

357 {

358 VALIDATE_FILE_SIZE(szData + pcNew->mWidth*pcNew->mHeight);

359

360 // copy texture data

361 unsigned int i;

362 if (do_read)

363 {

364

365 const unsigned char* szColorMap;

366 SearchPalette(&szColorMap);

367

368 for (i = 0; i < pcNew->mWidth*pcNew->mHeight;++i)

369 {

370 const unsigned char val = szData[i];

371 const unsigned char* sz = &szColorMap[val*3];

372

373 pcNew->pcData[i].a = 0xFF;

374 pcNew->pcData[i].r = *sz++;

375 pcNew->pcData[i].g = *sz++;

376 pcNew->pcData[i].b = *sz;

377 }

378 this->FreePalette(szColorMap);

379

380 }

381 else i = pcNew->mWidth*pcNew->mHeight;

382 *piSkip = i;

383

384 // FIXME: Also support for MIP maps?

385 }

386 }

387

388 // ------------------------------------------------------------------------------------------------

389 // Get a texture from a MDL5 file

390 void MDLImporter::CreateTexture_3DGS_MDL5(const unsigned char* szData,

391 unsigned int iType,

392 unsigned int* piSkip)

393 {

394 ai_assert(NULL != piSkip);

395 bool bNoRead = *piSkip == UINT_MAX;

396

397 // allocate a new texture object

398 aiTexture* pcNew = new aiTexture();

399

400 VALIDATE_FILE_SIZE(szData+8);

401

402 // first read the size of the texture

403 pcNew->mWidth = *((uint32_t*)szData);

404 AI_SWAP4(pcNew->mWidth);

405 szData += sizeof(uint32_t);

406

407 pcNew->mHeight = *((uint32_t*)szData);

408 AI_SWAP4(pcNew->mHeight);

409 szData += sizeof(uint32_t);

410

411 if (bNoRead) {

412 pcNew->pcData = bad_texel;

413 }

414

415 // this should not occur - at least the docs say it shouldn't.

416 // however, one can easily try out what MED does if you have

417 // a model with a DDS texture and export it to MDL5 ...

418 // yeah, it embedds the DDS file.

419 if (6 == iType)

420 {

421 // this is a compressed texture in DDS format

422 *piSkip = pcNew->mWidth;

423 VALIDATE_FILE_SIZE(szData + *piSkip);

424

425 if (!bNoRead)

426 {

427 // place a hint and let the application know that this is a DDS file

428 pcNew->mHeight = 0;

429 pcNew->achFormatHint[0] = 'd';

430 pcNew->achFormatHint[1] = 'd';

431 pcNew->achFormatHint[2] = 's';

432 pcNew->achFormatHint[3] = '\0';

433

434 pcNew->pcData = (aiTexel*) new unsigned char[pcNew->mWidth];

435 ::memcpy(pcNew->pcData,szData,pcNew->mWidth);

436 }

437 }

438 else

439 {

440 // parse the color data of the texture

441 ParseTextureColorData(szData,iType,piSkip,pcNew);

442 }

443 *piSkip += sizeof(uint32_t) * 2;

444

445 if (!bNoRead)

446 {

447 // store the texture

448 if (!this->pScene->mNumTextures)

449 {

450 pScene->mNumTextures = 1;

451 pScene->mTextures = new aiTexture*[1];

452 pScene->mTextures[0] = pcNew;

453 }

454 else

455 {

456 aiTexture** pc = pScene->mTextures;

457 pScene->mTextures = new aiTexture*[pScene->mNumTextures+1];

458 for (unsigned int i = 0; i < pScene->mNumTextures;++i)

459 this->pScene->mTextures[i] = pc[i];

460

461 pScene->mTextures[pScene->mNumTextures] = pcNew;

462 pScene->mNumTextures++;

463 delete[] pc;

464 }

465 }

466 else {

467 pcNew->pcData = NULL;

468 delete pcNew;

469 }

470 return;

471 }

472

473 // ------------------------------------------------------------------------------------------------

474 // Get a skin from a MDL7 file - more complex than all other subformats

475 void MDLImporter::ParseSkinLump_3DGS_MDL7(

476 const unsigned char* szCurrent,

477 const unsigned char** szCurrentOut,

478 aiMaterial* pcMatOut,

479 unsigned int iType,

480 unsigned int iWidth,

481 unsigned int iHeight)

482 {

483 aiTexture* pcNew = NULL;

484

485 // get the type of the skin

486 unsigned int iMasked = (unsigned int)(iType & 0xF);

487

488 if (0x1 == iMasked)

489 {

490 // ***** REFERENCE TO ANOTHER SKIN INDEX *****

491 int referrer = (int)iWidth;

492 pcMatOut->AddProperty<int>(&referrer,1,AI_MDL7_REFERRER_MATERIAL);

493 }

494 else if (0x6 == iMasked)

495 {

496 // ***** EMBEDDED DDS FILE *****

497 if (1 != iHeight)

498 {

499 DefaultLogger::get()->warn("Found a reference to an embedded DDS texture, "

500 "but texture height is not equal to 1, which is not supported by MED");

501 }

502

503 pcNew = new aiTexture();

504 pcNew->mHeight = 0;

505 pcNew->mWidth = iWidth;

506

507 // place a proper format hint

508 pcNew->achFormatHint[0] = 'd';

509 pcNew->achFormatHint[1] = 'd';

510 pcNew->achFormatHint[2] = 's';

511 pcNew->achFormatHint[3] = '\0';

512

513 pcNew->pcData = (aiTexel*) new unsigned char[pcNew->mWidth];

514 memcpy(pcNew->pcData,szCurrent,pcNew->mWidth);

515 szCurrent += iWidth;

516 }

517 if (0x7 == iMasked)

518 {

519 // ***** REFERENCE TO EXTERNAL FILE *****

520 if (1 != iHeight)

521 {

522 DefaultLogger::get()->warn("Found a reference to an external texture, "

523 "but texture height is not equal to 1, which is not supported by MED");

524 }

525

526 aiString szFile;

527 const size_t iLen = strlen((const char*)szCurrent);

528 size_t iLen2 = iLen+1;

529 iLen2 = iLen2 > MAXLEN ? MAXLEN : iLen2;

530 memcpy(szFile.data,(const char*)szCurrent,iLen2);

531 szFile.length = iLen;

532

533 szCurrent += iLen2;

534

535 // place this as diffuse texture

536 pcMatOut->AddProperty(&szFile,AI_MATKEY_TEXTURE_DIFFUSE(0));

537 }

538 else if (iMasked || !iType || (iType && iWidth && iHeight))

539 {

540 // ***** STANDARD COLOR TEXTURE *****

541 pcNew = new aiTexture();

542 if (!iHeight || !iWidth)

543 {

544 DefaultLogger::get()->warn("Found embedded texture, but its width "

545 "an height are both 0. Is this a joke?");

546

547 // generate an empty chess pattern

548 pcNew->mWidth = pcNew->mHeight = 8;

549 pcNew->pcData = new aiTexel[64];

550 for (unsigned int x = 0; x < 8;++x)

551 {

552 for (unsigned int y = 0; y < 8;++y)

553 {

554 const bool bSet = ((0 == x % 2 && 0 != y % 2) ||

555 (0 != x % 2 && 0 == y % 2));

556

557 aiTexel* pc = &pcNew->pcData[y * 8 + x];

558 pc->r = pc->b = pc->g = (bSet?0xFF:0);

559 pc->a = 0xFF;

560 }

561 }

562 }

563 else

564 {

565 // it is a standard color texture. Fill in width and height

566 // and call the same function we used for loading MDL5 files

567

568 pcNew->mWidth = iWidth;

569 pcNew->mHeight = iHeight;

570

571 unsigned int iSkip = 0;

572 ParseTextureColorData(szCurrent,iMasked,&iSkip,pcNew);

573

574 // skip length of texture data

575 szCurrent += iSkip;

576 }

577 }

578

579 // sometimes there are MDL7 files which have a monochrome

580 // texture instead of material colors ... posssible they have

581 // been converted to MDL7 from other formats, such as MDL5

582 aiColor4D clrTexture;

583 if (pcNew)clrTexture = ReplaceTextureWithColor(pcNew);

584 else clrTexture.r = get_qnan();

585

586 // check whether a material definition is contained in the skin

587 if (iType & AI_MDL7_SKINTYPE_MATERIAL)

588 {

589 BE_NCONST MDL::Material_MDL7* pcMatIn = (BE_NCONST MDL::Material_MDL7*)szCurrent;

590 szCurrent = (unsigned char*)(pcMatIn+1);

591 VALIDATE_FILE_SIZE(szCurrent);

592

593 aiColor3D clrTemp;

594

595 #define COLOR_MULTIPLY_RGB() \

596 if (is_not_qnan(clrTexture.r)) \

597 { \

598 clrTemp.r *= clrTexture.r; \

599 clrTemp.g *= clrTexture.g; \

600 clrTemp.b *= clrTexture.b; \

601 }

602

603 // read diffuse color

604 clrTemp.r = pcMatIn->Diffuse.r;

605 AI_SWAP4(clrTemp.r);

606 clrTemp.g = pcMatIn->Diffuse.g;

607 AI_SWAP4(clrTemp.g);

608 clrTemp.b = pcMatIn->Diffuse.b;

609 AI_SWAP4(clrTemp.b);

610 COLOR_MULTIPLY_RGB();

611 pcMatOut->AddProperty<aiColor3D>(&clrTemp,1,AI_MATKEY_COLOR_DIFFUSE);

612

613 // read specular color

614 clrTemp.r = pcMatIn->Specular.r;

615 AI_SWAP4(clrTemp.r);

616 clrTemp.g = pcMatIn->Specular.g;

617 AI_SWAP4(clrTemp.g);

618 clrTemp.b = pcMatIn->Specular.b;

619 AI_SWAP4(clrTemp.b);

620 COLOR_MULTIPLY_RGB();

621 pcMatOut->AddProperty<aiColor3D>(&clrTemp,1,AI_MATKEY_COLOR_SPECULAR);

622

623 // read ambient color

624 clrTemp.r = pcMatIn->Ambient.r;

625 AI_SWAP4(clrTemp.r);

626 clrTemp.g = pcMatIn->Ambient.g;

627 AI_SWAP4(clrTemp.g);

628 clrTemp.b = pcMatIn->Ambient.b;

629 AI_SWAP4(clrTemp.b);

630 COLOR_MULTIPLY_RGB();

631 pcMatOut->AddProperty<aiColor3D>(&clrTemp,1,AI_MATKEY_COLOR_AMBIENT);

632

633 // read emissive color

634 clrTemp.r = pcMatIn->Emissive.r;

635 AI_SWAP4(clrTemp.r);

636 clrTemp.g = pcMatIn->Emissive.g;

637 AI_SWAP4(clrTemp.g);

638 clrTemp.b = pcMatIn->Emissive.b;

639 AI_SWAP4(clrTemp.b);

640 pcMatOut->AddProperty<aiColor3D>(&clrTemp,1,AI_MATKEY_COLOR_EMISSIVE);

641

642 #undef COLOR_MULITPLY_RGB

643

644 // FIX: Take the opacity from the ambient color.

645 // The doc say something else, but it is fact that MED exports the

646 // opacity like this .... oh well.

647 clrTemp.r = pcMatIn->Ambient.a;

648 AI_SWAP4(clrTemp.r);

649 if (is_not_qnan(clrTexture.r)) {

650 clrTemp.r *= clrTexture.a;

651 }

652 pcMatOut->AddProperty<float>(&clrTemp.r,1,AI_MATKEY_OPACITY);

653

654 // read phong power

655 int iShadingMode = (int)aiShadingMode_Gouraud;

656 AI_SWAP4(pcMatIn->Power);

657 if (0.0f != pcMatIn->Power)

658 {

659 iShadingMode = (int)aiShadingMode_Phong;

660 pcMatOut->AddProperty<float>(&pcMatIn->Power,1,AI_MATKEY_SHININESS);

661 }

662 pcMatOut->AddProperty<int>(&iShadingMode,1,AI_MATKEY_SHADING_MODEL);

663 }

664 else if (is_not_qnan(clrTexture.r))

665 {

666 pcMatOut->AddProperty<aiColor4D>(&clrTexture,1,AI_MATKEY_COLOR_DIFFUSE);

667 pcMatOut->AddProperty<aiColor4D>(&clrTexture,1,AI_MATKEY_COLOR_SPECULAR);

668 }

669 // if the texture could be replaced by a single material color

670 // we don't need the texture anymore

671 if (is_not_qnan(clrTexture.r))

672 {

673 delete pcNew;

674 pcNew = NULL;

675 }

676

677 // If an ASCII effect description (HLSL?) is contained in the file,

678 // we can simply ignore it ...

679 if (iType & AI_MDL7_SKINTYPE_MATERIAL_ASCDEF)

680 {

681 VALIDATE_FILE_SIZE(szCurrent);

682 int32_t iMe = *((int32_t*)szCurrent);

683 AI_SWAP4(iMe);

684 szCurrent += sizeof(char) * iMe + sizeof(int32_t);

685 VALIDATE_FILE_SIZE(szCurrent);

686 }

687

688 // If an embedded texture has been loaded setup the corresponding

689 // data structures in the aiScene instance

690 if (pcNew && pScene->mNumTextures <= 999)

691 {

692

693 // place this as diffuse texture

694 char szCurrent[5];

695 ::sprintf(szCurrent,"*%i",this->pScene->mNumTextures);

696

697 aiString szFile;

698 const size_t iLen = strlen((const char*)szCurrent);

699 ::memcpy(szFile.data,(const char*)szCurrent,iLen+1);

700 szFile.length = iLen;

701

702 pcMatOut->AddProperty(&szFile,AI_MATKEY_TEXTURE_DIFFUSE(0));

703

704 // store the texture

705 if (!pScene->mNumTextures)

706 {

707 pScene->mNumTextures = 1;

708 pScene->mTextures = new aiTexture*[1];

709 pScene->mTextures[0] = pcNew;

710 }

711 else

712 {

713 aiTexture** pc = pScene->mTextures;

714 pScene->mTextures = new aiTexture*[pScene->mNumTextures+1];

715 for (unsigned int i = 0; i < pScene->mNumTextures;++i) {

716 pScene->mTextures[i] = pc[i];

717 }

718

719 pScene->mTextures[pScene->mNumTextures] = pcNew;

720 pScene->mNumTextures++;

721 delete[] pc;

722 }

723 }

724 VALIDATE_FILE_SIZE(szCurrent);

725 *szCurrentOut = szCurrent;

726 }

727

728 // ------------------------------------------------------------------------------------------------

729 // Skip a skin lump

730 void MDLImporter::SkipSkinLump_3DGS_MDL7(

731 const unsigned char* szCurrent,

732 const unsigned char** szCurrentOut,

733 unsigned int iType,

734 unsigned int iWidth,

735 unsigned int iHeight)

736 {

737 // get the type of the skin

738 const unsigned int iMasked = (unsigned int)(iType & 0xF);

739

740 if (0x6 == iMasked)

741 {

742 szCurrent += iWidth;

743 }

744 if (0x7 == iMasked)

745 {

746 const size_t iLen = ::strlen((const char*)szCurrent);

747 szCurrent += iLen+1;

748 }

749 else if (iMasked || !iType)

750 {

751 if (iMasked || !iType || (iType && iWidth && iHeight))

752 {

753 // ParseTextureColorData(..., aiTexture::pcData == bad_texel) will simply

754 // return the size of the color data in bytes in iSkip

755 unsigned int iSkip = 0;

756

757 aiTexture tex;

758 tex.pcData = bad_texel;

759 tex.mHeight = iHeight;

760 tex.mWidth = iWidth;

761 ParseTextureColorData(szCurrent,iMasked,&iSkip,&tex);

762

763 // FIX: Important, otherwise the destructor will crash

764 tex.pcData = NULL;

765

766 // skip length of texture data

767 szCurrent += iSkip;

768 }

769 }

770

771 // check whether a material definition is contained in the skin

772 if (iType & AI_MDL7_SKINTYPE_MATERIAL)

773 {

774 BE_NCONST MDL::Material_MDL7* pcMatIn = (BE_NCONST MDL::Material_MDL7*)szCurrent;

775 szCurrent = (unsigned char*)(pcMatIn+1);

776 }

777

778 // if an ASCII effect description (HLSL?) is contained in the file,

779 // we can simply ignore it ...

780 if (iType & AI_MDL7_SKINTYPE_MATERIAL_ASCDEF)

781 {

782 int32_t iMe = *((int32_t*)szCurrent);

783 AI_SWAP4(iMe);

784 szCurrent += sizeof(char) * iMe + sizeof(int32_t);

785 }

786 *szCurrentOut = szCurrent;

787 }

788

789 // ------------------------------------------------------------------------------------------------

790 void MDLImporter::ParseSkinLump_3DGS_MDL7(

791 const unsigned char* szCurrent,

792 const unsigned char** szCurrentOut,

793 std::vector<aiMaterial*>& pcMats)

794 {

795 ai_assert(NULL != szCurrent);

796 ai_assert(NULL != szCurrentOut);

797

798 *szCurrentOut = szCurrent;

799 BE_NCONST MDL::Skin_MDL7* pcSkin = (BE_NCONST MDL::Skin_MDL7*)szCurrent;

800 AI_SWAP4(pcSkin->width);

801 AI_SWAP4(pcSkin->height);

802 szCurrent += 12;

803

804 // allocate an output material

805 aiMaterial* pcMatOut = new aiMaterial();

806 pcMats.push_back(pcMatOut);

807

808 // skip length of file name

809 szCurrent += AI_MDL7_MAX_TEXNAMESIZE;

810

811 ParseSkinLump_3DGS_MDL7(szCurrent,szCurrentOut,pcMatOut,

812 pcSkin->typ,pcSkin->width,pcSkin->height);

813

814 // place the name of the skin in the material

815 if (pcSkin->texture_name[0])

816 {

817 // the 0 termination could be there or not - we can't know

818 aiString szFile;

819 ::memcpy(szFile.data,pcSkin->texture_name,sizeof(pcSkin->texture_name));

820 szFile.data[sizeof(pcSkin->texture_name)] = '\0';

821 szFile.length = ::strlen(szFile.data);

822

823 pcMatOut->AddProperty(&szFile,AI_MATKEY_NAME);

824 }

825 }

826

827 #endif // !! ASSIMP_BUILD_NO_MDL_IMPORTER