1 /*
2 * Copyright 2014 Michael Müller
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
17 */
18
19 #include "config.h"
20 #include "wine/port.h"
21 #include "wined3d_private.h"
22 #include "wine/library.h"
23
24 WINE_DEFAULT_DEBUG_CHANNEL(d3d);
25
26 static void* txc_dxtn_handle;
27 static void (*pfetch_2d_texel_rgba_dxt1)(int srcRowStride, const BYTE *pixData, int i, int j, DWORD *texel);
28 static void (*pfetch_2d_texel_rgba_dxt3)(int srcRowStride, const BYTE *pixData, int i, int j, DWORD *texel);
29 static void (*pfetch_2d_texel_rgba_dxt5)(int srcRowStride, const BYTE *pixData, int i, int j, DWORD *texel);
30 static void (*ptx_compress_dxtn)(int comps, int width, int height, const BYTE *srcPixData,
31 GLenum destformat, BYTE *dest, int dstRowStride);
32
dxt1_to_x8r8g8b8(const BYTE * src,BYTE * dst,DWORD pitch_in,DWORD pitch_out,unsigned int w,unsigned int h,BOOL alpha)33 static inline BOOL dxt1_to_x8r8g8b8(const BYTE *src, BYTE *dst, DWORD pitch_in,
34 DWORD pitch_out, unsigned int w, unsigned int h, BOOL alpha)
35 {
36 unsigned int x, y;
37 DWORD color;
38
39 TRACE("Converting %ux%u pixels, pitches %u %u\n", w, h, pitch_in, pitch_out);
40
41 for (y = 0; y < h; ++y)
42 {
43 DWORD *dst_line = (DWORD *)(dst + y * pitch_out);
44 for (x = 0; x < w; ++x)
45 {
46 /* pfetch_2d_texel_rgba_dxt1 doesn't correctly handle pitch */
47 pfetch_2d_texel_rgba_dxt1(0, src + (y / 4) * pitch_in + (x / 4) * 8,
48 x & 3, y & 3, &color);
49 if (alpha)
50 {
51 dst_line[x] = (color & 0xff00ff00) | ((color & 0xff) << 16) |
52 ((color & 0xff0000) >> 16);
53 }
54 else
55 {
56 dst_line[x] = 0xff000000 | ((color & 0xff) << 16) |
57 (color & 0xff00) | ((color & 0xff0000) >> 16);
58 }
59 }
60 }
61
62 return TRUE;
63 }
64
dxt1_to_x4r4g4b4(const BYTE * src,BYTE * dst,DWORD pitch_in,DWORD pitch_out,unsigned int w,unsigned int h,BOOL alpha)65 static inline BOOL dxt1_to_x4r4g4b4(const BYTE *src, BYTE *dst, DWORD pitch_in,
66 DWORD pitch_out, unsigned int w, unsigned int h, BOOL alpha)
67 {
68 unsigned int x, y;
69 DWORD color;
70
71 TRACE("Converting %ux%u pixels, pitches %u %u\n", w, h, pitch_in, pitch_out);
72
73 for (y = 0; y < h; ++y)
74 {
75 WORD *dst_line = (WORD *)(dst + y * pitch_out);
76 for (x = 0; x < w; ++x)
77 {
78 /* pfetch_2d_texel_rgba_dxt1 doesn't correctly handle pitch */
79 pfetch_2d_texel_rgba_dxt1(0, src + (y / 4) * pitch_in + (x / 4) * 16,
80 x & 3, y & 3, &color);
81 if (alpha)
82 {
83 dst_line[x] = ((color & 0xf0000000) >> 16) | ((color & 0xf00000) >> 20) |
84 ((color & 0xf000) >> 8) | ((color & 0xf0) << 4);
85 }
86 else
87 {
88 dst_line[x] = 0xf000 | ((color & 0xf00000) >> 20) |
89 ((color & 0xf000) >> 8) | ((color & 0xf0) << 4);
90 }
91 }
92 }
93
94 return TRUE;
95 }
96
dxt1_to_x1r5g5b5(const BYTE * src,BYTE * dst,DWORD pitch_in,DWORD pitch_out,unsigned int w,unsigned int h,BOOL alpha)97 static inline BOOL dxt1_to_x1r5g5b5(const BYTE *src, BYTE *dst, DWORD pitch_in,
98 DWORD pitch_out, unsigned int w, unsigned int h, BOOL alpha)
99 {
100 unsigned int x, y;
101 DWORD color;
102
103 TRACE("Converting %ux%u pixels, pitches %u %u\n", w, h, pitch_in, pitch_out);
104
105 for (y = 0; y < h; ++y)
106 {
107 WORD *dst_line = (WORD *)(dst + y * pitch_out);
108 for (x = 0; x < w; ++x)
109 {
110 /* pfetch_2d_texel_rgba_dxt1 doesn't correctly handle pitch */
111 pfetch_2d_texel_rgba_dxt1(0, src + (y / 4) * pitch_in + (x / 4) * 16,
112 x & 3, y & 3, &color);
113 if (alpha)
114 {
115 dst_line[x] = ((color & 0x80000000) >> 16) | ((color & 0xf80000) >> 19) |
116 ((color & 0xf800) >> 6) | ((color & 0xf8) << 7);
117 }
118 else
119 {
120 dst_line[x] = 0x8000 | ((color & 0xf80000) >> 19) |
121 ((color & 0xf800) >> 6) | ((color & 0xf8) << 7);
122 }
123 }
124 }
125
126 return TRUE;
127 }
128
dxt3_to_x8r8g8b8(const BYTE * src,BYTE * dst,DWORD pitch_in,DWORD pitch_out,unsigned int w,unsigned int h,BOOL alpha)129 static inline BOOL dxt3_to_x8r8g8b8(const BYTE *src, BYTE *dst, DWORD pitch_in,
130 DWORD pitch_out, unsigned int w, unsigned int h, BOOL alpha)
131 {
132 unsigned int x, y;
133 DWORD color;
134
135 TRACE("Converting %ux%u pixels, pitches %u %u\n", w, h, pitch_in, pitch_out);
136
137 for (y = 0; y < h; ++y)
138 {
139 DWORD *dst_line = (DWORD *)(dst + y * pitch_out);
140 for (x = 0; x < w; ++x)
141 {
142 /* pfetch_2d_texel_rgba_dxt3 doesn't correctly handle pitch */
143 pfetch_2d_texel_rgba_dxt3(0, src + (y / 4) * pitch_in + (x / 4) * 16,
144 x & 3, y & 3, &color);
145 if (alpha)
146 {
147 dst_line[x] = (color & 0xff00ff00) | ((color & 0xff) << 16) |
148 ((color & 0xff0000) >> 16);
149 }
150 else
151 {
152 dst_line[x] = 0xff000000 | ((color & 0xff) << 16) |
153 (color & 0xff00) | ((color & 0xff0000) >> 16);
154 }
155 }
156 }
157
158 return TRUE;
159 }
160
dxt3_to_x4r4g4b4(const BYTE * src,BYTE * dst,DWORD pitch_in,DWORD pitch_out,unsigned int w,unsigned int h,BOOL alpha)161 static inline BOOL dxt3_to_x4r4g4b4(const BYTE *src, BYTE *dst, DWORD pitch_in,
162 DWORD pitch_out, unsigned int w, unsigned int h, BOOL alpha)
163 {
164 unsigned int x, y;
165 DWORD color;
166
167 TRACE("Converting %ux%u pixels, pitches %u %u\n", w, h, pitch_in, pitch_out);
168
169 for (y = 0; y < h; ++y)
170 {
171 WORD *dst_line = (WORD *)(dst + y * pitch_out);
172 for (x = 0; x < w; ++x)
173 {
174 /* pfetch_2d_texel_rgba_dxt3 doesn't correctly handle pitch */
175 pfetch_2d_texel_rgba_dxt3(0, src + (y / 4) * pitch_in + (x / 4) * 16,
176 x & 3, y & 3, &color);
177 if (alpha)
178 {
179 dst_line[x] = ((color & 0xf0000000) >> 16) | ((color & 0xf00000) >> 20) |
180 ((color & 0xf000) >> 8) | ((color & 0xf0) << 4);
181 }
182 else
183 {
184 dst_line[x] = 0xf000 | ((color & 0xf00000) >> 20) |
185 ((color & 0xf000) >> 8) | ((color & 0xf0) << 4);
186 }
187 }
188 }
189
190 return TRUE;
191 }
192
dxt5_to_x8r8g8b8(const BYTE * src,BYTE * dst,DWORD pitch_in,DWORD pitch_out,unsigned int w,unsigned int h,BOOL alpha)193 static inline BOOL dxt5_to_x8r8g8b8(const BYTE *src, BYTE *dst, DWORD pitch_in,
194 DWORD pitch_out, unsigned int w, unsigned int h, BOOL alpha)
195 {
196 unsigned int x, y;
197 DWORD color;
198
199 TRACE("Converting %ux%u pixels, pitches %u %u\n", w, h, pitch_in, pitch_out);
200
201 for (y = 0; y < h; ++y)
202 {
203 DWORD *dst_line = (DWORD *)(dst + y * pitch_out);
204 for (x = 0; x < w; ++x)
205 {
206 /* pfetch_2d_texel_rgba_dxt5 doesn't correctly handle pitch */
207 pfetch_2d_texel_rgba_dxt5(0, src + (y / 4) * pitch_in + (x / 4) * 16,
208 x & 3, y & 3, &color);
209 if (alpha)
210 {
211 dst_line[x] = (color & 0xff00ff00) | ((color & 0xff) << 16) |
212 ((color & 0xff0000) >> 16);
213 }
214 else
215 {
216 dst_line[x] = 0xff000000 | ((color & 0xff) << 16) |
217 (color & 0xff00) | ((color & 0xff0000) >> 16);
218 }
219 }
220 }
221
222 return TRUE;
223 }
224
x8r8g8b8_to_dxtn(const BYTE * src,BYTE * dst,DWORD pitch_in,DWORD pitch_out,unsigned int w,unsigned int h,GLenum destformat,BOOL alpha)225 static inline BOOL x8r8g8b8_to_dxtn(const BYTE *src, BYTE *dst, DWORD pitch_in,
226 DWORD pitch_out, unsigned int w, unsigned int h, GLenum destformat, BOOL alpha)
227 {
228 unsigned int x, y;
229 DWORD color, *tmp;
230
231 TRACE("Converting %ux%u pixels, pitches %u %u\n", w, h, pitch_in, pitch_out);
232
233 tmp = HeapAlloc(GetProcessHeap(), 0, h * w * sizeof(DWORD));
234 if (!tmp)
235 {
236 ERR("Failed to allocate memory for conversion\n");
237 return FALSE;
238 }
239
240 for (y = 0; y < h; ++y)
241 {
242 const DWORD *src_line = (const DWORD *)(src + y * pitch_in);
243 DWORD *dst_line = tmp + y * w;
244 for (x = 0; x < w; ++x)
245 {
246 color = src_line[x];
247 if (alpha)
248 {
249 dst_line[x] = (color & 0xff00ff00) | ((color & 0xff) << 16) |
250 ((color & 0xff0000) >> 16);
251 }
252 else
253 {
254 dst_line[x] = 0xff000000 | ((color & 0xff) << 16) |
255 (color & 0xff00) | ((color & 0xff0000) >> 16);
256 }
257 }
258 }
259
260 ptx_compress_dxtn(4, w, h, (BYTE *)tmp, destformat, dst, pitch_out);
261 HeapFree(GetProcessHeap(), 0, tmp);
262 return TRUE;
263 }
264
x1r5g5b5_to_dxtn(const BYTE * src,BYTE * dst,DWORD pitch_in,DWORD pitch_out,unsigned int w,unsigned int h,GLenum destformat,BOOL alpha)265 static inline BOOL x1r5g5b5_to_dxtn(const BYTE *src, BYTE *dst, DWORD pitch_in,
266 DWORD pitch_out, unsigned int w, unsigned int h, GLenum destformat, BOOL alpha)
267 {
268 static const unsigned char convert_5to8[] =
269 {
270 0x00, 0x08, 0x10, 0x19, 0x21, 0x29, 0x31, 0x3a,
271 0x42, 0x4a, 0x52, 0x5a, 0x63, 0x6b, 0x73, 0x7b,
272 0x84, 0x8c, 0x94, 0x9c, 0xa5, 0xad, 0xb5, 0xbd,
273 0xc5, 0xce, 0xd6, 0xde, 0xe6, 0xef, 0xf7, 0xff,
274 };
275 unsigned int x, y;
276 DWORD *tmp;
277 WORD color;
278
279 TRACE("Converting %ux%u pixels, pitches %u %u.\n", w, h, pitch_in, pitch_out);
280
281 tmp = HeapAlloc(GetProcessHeap(), 0, h * w * sizeof(DWORD));
282 if (!tmp)
283 {
284 ERR("Failed to allocate memory for conversion\n");
285 return FALSE;
286 }
287
288 for (y = 0; y < h; ++y)
289 {
290 const WORD *src_line = (const WORD *)(src + y * pitch_in);
291 DWORD *dst_line = tmp + y * w;
292 for (x = 0; x < w; ++x)
293 {
294 color = src_line[x];
295 if (alpha)
296 {
297 dst_line[x] = ((color & 0x8000) ? 0xff000000 : 0) |
298 convert_5to8[(color & 0x001f)] << 16 |
299 convert_5to8[(color & 0x03e0) >> 5] << 8 |
300 convert_5to8[(color & 0x7c00) >> 10];
301 }
302 else
303 {
304 dst_line[x] = 0xff000000 |
305 convert_5to8[(color & 0x001f)] << 16 |
306 convert_5to8[(color & 0x03e0) >> 5] << 8 |
307 convert_5to8[(color & 0x7c00) >> 10];
308 }
309 }
310 }
311
312 ptx_compress_dxtn(4, w, h, (BYTE *)tmp, destformat, dst, pitch_out);
313 HeapFree(GetProcessHeap(), 0, tmp);
314 return TRUE;
315 }
316
wined3d_dxt1_decode(const BYTE * src,BYTE * dst,DWORD pitch_in,DWORD pitch_out,enum wined3d_format_id format,unsigned int w,unsigned int h)317 BOOL wined3d_dxt1_decode(const BYTE *src, BYTE *dst, DWORD pitch_in, DWORD pitch_out,
318 enum wined3d_format_id format, unsigned int w, unsigned int h)
319 {
320 if (!txc_dxtn_handle)
321 return FALSE;
322
323 switch (format)
324 {
325 case WINED3DFMT_B8G8R8A8_UNORM:
326 return dxt1_to_x8r8g8b8(src, dst, pitch_in, pitch_out, w, h, TRUE);
327 case WINED3DFMT_B8G8R8X8_UNORM:
328 return dxt1_to_x8r8g8b8(src, dst, pitch_in, pitch_out, w, h, FALSE);
329 case WINED3DFMT_B4G4R4A4_UNORM:
330 return dxt1_to_x4r4g4b4(src, dst, pitch_in, pitch_out, w, h, TRUE);
331 case WINED3DFMT_B4G4R4X4_UNORM:
332 return dxt1_to_x4r4g4b4(src, dst, pitch_in, pitch_out, w, h, FALSE);
333 case WINED3DFMT_B5G5R5A1_UNORM:
334 return dxt1_to_x1r5g5b5(src, dst, pitch_in, pitch_out, w, h, TRUE);
335 case WINED3DFMT_B5G5R5X1_UNORM:
336 return dxt1_to_x1r5g5b5(src, dst, pitch_in, pitch_out, w, h, FALSE);
337 default:
338 break;
339 }
340
341 FIXME("Cannot find a conversion function from format DXT1 to %s.\n", debug_d3dformat(format));
342 return FALSE;
343 }
344
wined3d_dxt3_decode(const BYTE * src,BYTE * dst,DWORD pitch_in,DWORD pitch_out,enum wined3d_format_id format,unsigned int w,unsigned int h)345 BOOL wined3d_dxt3_decode(const BYTE *src, BYTE *dst, DWORD pitch_in, DWORD pitch_out,
346 enum wined3d_format_id format, unsigned int w, unsigned int h)
347 {
348 if (!txc_dxtn_handle)
349 return FALSE;
350
351 switch (format)
352 {
353 case WINED3DFMT_B8G8R8A8_UNORM:
354 return dxt3_to_x8r8g8b8(src, dst, pitch_in, pitch_out, w, h, TRUE);
355 case WINED3DFMT_B8G8R8X8_UNORM:
356 return dxt3_to_x8r8g8b8(src, dst, pitch_in, pitch_out, w, h, FALSE);
357 case WINED3DFMT_B4G4R4A4_UNORM:
358 return dxt3_to_x4r4g4b4(src, dst, pitch_in, pitch_out, w, h, TRUE);
359 case WINED3DFMT_B4G4R4X4_UNORM:
360 return dxt3_to_x4r4g4b4(src, dst, pitch_in, pitch_out, w, h, FALSE);
361 default:
362 break;
363 }
364
365 FIXME("Cannot find a conversion function from format DXT3 to %s.\n", debug_d3dformat(format));
366 return FALSE;
367 }
368
wined3d_dxt5_decode(const BYTE * src,BYTE * dst,DWORD pitch_in,DWORD pitch_out,enum wined3d_format_id format,unsigned int w,unsigned int h)369 BOOL wined3d_dxt5_decode(const BYTE *src, BYTE *dst, DWORD pitch_in, DWORD pitch_out,
370 enum wined3d_format_id format, unsigned int w, unsigned int h)
371 {
372 if (!txc_dxtn_handle)
373 return FALSE;
374
375 switch (format)
376 {
377 case WINED3DFMT_B8G8R8A8_UNORM:
378 return dxt5_to_x8r8g8b8(src, dst, pitch_in, pitch_out, w, h, TRUE);
379 case WINED3DFMT_B8G8R8X8_UNORM:
380 return dxt5_to_x8r8g8b8(src, dst, pitch_in, pitch_out, w, h, FALSE);
381 default:
382 break;
383 }
384
385 FIXME("Cannot find a conversion function from format DXT5 to %s.\n", debug_d3dformat(format));
386 return FALSE;
387 }
388
wined3d_dxt1_encode(const BYTE * src,BYTE * dst,DWORD pitch_in,DWORD pitch_out,enum wined3d_format_id format,unsigned int w,unsigned int h)389 BOOL wined3d_dxt1_encode(const BYTE *src, BYTE *dst, DWORD pitch_in, DWORD pitch_out,
390 enum wined3d_format_id format, unsigned int w, unsigned int h)
391 {
392 if (!txc_dxtn_handle)
393 return FALSE;
394
395 switch (format)
396 {
397 case WINED3DFMT_B8G8R8A8_UNORM:
398 return x8r8g8b8_to_dxtn(src, dst, pitch_in, pitch_out, w, h,
399 GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, TRUE);
400 case WINED3DFMT_B8G8R8X8_UNORM:
401 return x8r8g8b8_to_dxtn(src, dst, pitch_in, pitch_out, w, h,
402 GL_COMPRESSED_RGB_S3TC_DXT1_EXT, FALSE);
403 case WINED3DFMT_B5G5R5A1_UNORM:
404 return x1r5g5b5_to_dxtn(src, dst, pitch_in, pitch_out, w, h,
405 GL_COMPRESSED_RGBA_S3TC_DXT1_EXT, TRUE);
406 case WINED3DFMT_B5G5R5X1_UNORM:
407 return x1r5g5b5_to_dxtn(src, dst, pitch_in, pitch_out, w, h,
408 GL_COMPRESSED_RGB_S3TC_DXT1_EXT, FALSE);
409 default:
410 break;
411 }
412
413 FIXME("Cannot find a conversion function from format %s to DXT1.\n", debug_d3dformat(format));
414 return FALSE;
415 }
416
wined3d_dxt3_encode(const BYTE * src,BYTE * dst,DWORD pitch_in,DWORD pitch_out,enum wined3d_format_id format,unsigned int w,unsigned int h)417 BOOL wined3d_dxt3_encode(const BYTE *src, BYTE *dst, DWORD pitch_in, DWORD pitch_out,
418 enum wined3d_format_id format, unsigned int w, unsigned int h)
419 {
420 if (!txc_dxtn_handle)
421 return FALSE;
422
423 switch (format)
424 {
425 case WINED3DFMT_B8G8R8A8_UNORM:
426 return x8r8g8b8_to_dxtn(src, dst, pitch_in, pitch_out, w, h,
427 GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, TRUE);
428 case WINED3DFMT_B8G8R8X8_UNORM:
429 return x8r8g8b8_to_dxtn(src, dst, pitch_in, pitch_out, w, h,
430 GL_COMPRESSED_RGBA_S3TC_DXT3_EXT, FALSE);
431 default:
432 break;
433 }
434
435 FIXME("Cannot find a conversion function from format %s to DXT3.\n", debug_d3dformat(format));
436 return FALSE;
437 }
438
wined3d_dxt5_encode(const BYTE * src,BYTE * dst,DWORD pitch_in,DWORD pitch_out,enum wined3d_format_id format,unsigned int w,unsigned int h)439 BOOL wined3d_dxt5_encode(const BYTE *src, BYTE *dst, DWORD pitch_in, DWORD pitch_out,
440 enum wined3d_format_id format, unsigned int w, unsigned int h)
441 {
442 if (!txc_dxtn_handle)
443 return FALSE;
444
445 switch (format)
446 {
447 case WINED3DFMT_B8G8R8A8_UNORM:
448 return x8r8g8b8_to_dxtn(src, dst, pitch_in, pitch_out, w, h,
449 GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, TRUE);
450 case WINED3DFMT_B8G8R8X8_UNORM:
451 return x8r8g8b8_to_dxtn(src, dst, pitch_in, pitch_out, w, h,
452 GL_COMPRESSED_RGBA_S3TC_DXT5_EXT, FALSE);
453 default:
454 break;
455 }
456
457 FIXME("Cannot find a conversion function from format %s to DXT5.\n", debug_d3dformat(format));
458 return FALSE;
459 }
460
wined3d_dxtn_init(void)461 BOOL wined3d_dxtn_init(void)
462 {
463 static const char *soname[] =
464 {
465 #ifdef SONAME_LIBTXC_DXTN
466 SONAME_LIBTXC_DXTN,
467 #endif
468 #ifdef __APPLE__
469 "libtxc_dxtn.dylib",
470 "libtxc_dxtn_s2tc.dylib",
471 #endif
472 "libtxc_dxtn.so",
473 "libtxc_dxtn_s2tc.so.0"
474 };
475 int i;
476
477 for (i = 0; i < sizeof(soname)/sizeof(soname[0]); i++)
478 {
479 txc_dxtn_handle = wine_dlopen(soname[i], RTLD_NOW, NULL, 0);
480 if (txc_dxtn_handle) break;
481 }
482
483 if (!txc_dxtn_handle)
484 {
485 FIXME("Wine cannot find the txc_dxtn library, DXTn software support unavailable.\n");
486 return FALSE;
487 }
488
489 #define LOAD_FUNCPTR(f) \
490 if (!(p##f = wine_dlsym(txc_dxtn_handle, #f, NULL, 0))) \
491 { \
492 ERR("Can't find symbol %s , DXTn software support unavailable.\n", #f); \
493 goto error; \
494 }
495
496 LOAD_FUNCPTR(fetch_2d_texel_rgba_dxt1);
497 LOAD_FUNCPTR(fetch_2d_texel_rgba_dxt3);
498 LOAD_FUNCPTR(fetch_2d_texel_rgba_dxt5);
499 LOAD_FUNCPTR(tx_compress_dxtn);
500
501 #undef LOAD_FUNCPTR
502 return TRUE;
503
504 error:
505 wine_dlclose(txc_dxtn_handle, NULL, 0);
506 txc_dxtn_handle = NULL;
507 return FALSE;
508 }
509
wined3d_dxtn_supported(void)510 BOOL wined3d_dxtn_supported(void)
511 {
512 return (txc_dxtn_handle != NULL);
513 }
514
wined3d_dxtn_free(void)515 void wined3d_dxtn_free(void)
516 {
517 if (txc_dxtn_handle)
518 wine_dlclose(txc_dxtn_handle, NULL, 0);
519 }
520