aboutsummaryrefslogtreecommitdiff
path: root/nx-X11/extras/Mesa/src/mesa/drivers/dri/common/glcontextmodes.c.NX.original
blob: 066c5ffbafeb6eac2a3fedb8a3bac19cece5729c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
/*
 * (C) Copyright IBM Corporation 2003
 * All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * on the rights to use, copy, modify, merge, publish, distribute, sub
 * license, and/or sell copies of the Software, and to permit persons to whom
 * the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
 * VA LINUX SYSTEM, IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 * USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

/**
 * \file glcontextmodes.c
 * Utility routines for working with \c __GLcontextModes structures.  At
 * some point most or all of these functions will be moved to the Mesa
 * code base.
 *
 * \author Ian Romanick <idr@us.ibm.com>
 */

#if defined(IN_MINI_GLX)
# include <stdlib.h>
# include <string.h>
# include <GL/gl.h>
# include "GL/internal/dri_interface.h"
# include "imports.h"
# define __glXMemset  memset
#else
# include <X11/X.h>
# include <GL/glx.h>
# include "GL/glxint.h"

# ifdef XFree86Server
void *memset( void * ptr, int val, size_t size);
#  include "GL/glx_ansic.h"
extern void * __glXMalloc( size_t size );
extern void __glXFree( void * ptr );
#  define _mesa_malloc(b) __glXMalloc(b)
#  define _mesa_free(m)   __glXFree(m)
# else
#  include <X11/Xlibint.h>
#  define __glXMemset  memset
#  define _mesa_malloc(b) Xmalloc(b)
#  define _mesa_free(m) Xfree(m)
# endif /* XFree86Server */
#endif /* !defined(IN_MINI_GLX) */

#include "glcontextmodes.h"

#if !defined(IN_MINI_GLX)
#define NUM_VISUAL_TYPES   6

/**
 * Convert an X visual type to a GLX visual type.
 * 
 * \param visualType X visual type (i.e., \c TrueColor, \c StaticGray, etc.)
 *        to be converted.
 * \return If \c visualType is a valid X visual type, a GLX visual type will
 *         be returned.  Otherwise \c GLX_NONE will be returned.
 */
GLint
_gl_convert_from_x_visual_type( int visualType )
{
    static const int glx_visual_types[ NUM_VISUAL_TYPES ] = {
	GLX_STATIC_GRAY,  GLX_GRAY_SCALE,
	GLX_STATIC_COLOR, GLX_PSEUDO_COLOR,
	GLX_TRUE_COLOR,   GLX_DIRECT_COLOR
    };

    return ( (unsigned) visualType < NUM_VISUAL_TYPES )
	? glx_visual_types[ visualType ] : GLX_NONE;
}


/**
 * Convert a GLX visual type to an X visual type.
 * 
 * \param visualType GLX visual type (i.e., \c GLX_TRUE_COLOR, 
 *                   \c GLX_STATIC_GRAY, etc.) to be converted.
 * \return If \c visualType is a valid GLX visual type, an X visual type will
 *         be returned.  Otherwise -1 will be returned.
 */
GLint
_gl_convert_to_x_visual_type( int visualType )
{
    static const int x_visual_types[ NUM_VISUAL_TYPES ] = {
	TrueColor,   DirectColor,
	PseudoColor, StaticColor,
	GrayScale,   StaticGray
    };

    return ( (unsigned) (visualType - GLX_TRUE_COLOR) <= NUM_VISUAL_TYPES )
	? x_visual_types[ visualType - GLX_TRUE_COLOR ] : -1;
}


/**
 * Copy a GLX visual config structure to a GL context mode structure.  All
 * of the fields in \c config are copied to \c mode.  Additional fields in
 * \c mode that can be derrived from the fields of \c config (i.e.,
 * \c haveDepthBuffer) are also filled in.  The remaining fields in \c mode
 * that cannot be derrived are set to default values.
 * 
 * \param mode   Destination GL context mode.
 * \param config Source GLX visual config.
 * 
 * \note
 * The \c fbconfigID and \c visualID fields of the \c __GLcontextModes
 * structure will be set to the \c vid of the \c __GLXvisualConfig structure.
 */
void
_gl_copy_visual_to_context_mode( __GLcontextModes * mode,
				 const __GLXvisualConfig * config )
{
    __GLcontextModes * const next = mode->next;

    (void) __glXMemset( mode, 0, sizeof( __GLcontextModes ) );
    mode->next = next;

    mode->visualID = config->vid;
    mode->visualType = _gl_convert_from_x_visual_type( config->class );
    mode->xRenderable = GL_TRUE;
    mode->fbconfigID = config->vid;
    mode->drawableType = GLX_WINDOW_BIT | GLX_PIXMAP_BIT;

    mode->rgbMode = (config->rgba != 0);
    mode->renderType = (mode->rgbMode) ? GLX_RGBA_BIT : GLX_COLOR_INDEX_BIT;

    mode->colorIndexMode = !(mode->rgbMode);
    mode->doubleBufferMode = (config->doubleBuffer != 0);
    mode->stereoMode = (config->stereo != 0);

    mode->haveAccumBuffer = ((config->accumRedSize +
			      config->accumGreenSize +
			      config->accumBlueSize +
			      config->accumAlphaSize) > 0);
    mode->haveDepthBuffer = (config->depthSize > 0);
    mode->haveStencilBuffer = (config->stencilSize > 0);

    mode->redBits = config->redSize;
    mode->greenBits = config->greenSize;
    mode->blueBits = config->blueSize;
    mode->alphaBits = config->alphaSize;
    mode->redMask = config->redMask;
    mode->greenMask = config->greenMask;
    mode->blueMask = config->blueMask;
    mode->alphaMask = config->alphaMask;
    mode->rgbBits = mode->rgbMode ? config->bufferSize : 0;
    mode->indexBits = mode->colorIndexMode ? config->bufferSize : 0;

    mode->accumRedBits = config->accumRedSize;
    mode->accumGreenBits = config->accumGreenSize;
    mode->accumBlueBits = config->accumBlueSize;
    mode->accumAlphaBits = config->accumAlphaSize;
    mode->depthBits = config->depthSize;
    mode->stencilBits = config->stencilSize;

    mode->numAuxBuffers = config->auxBuffers;
    mode->level = config->level;

    mode->visualRating = config->visualRating;
    mode->transparentPixel = config->transparentPixel;
    mode->transparentRed   = config->transparentRed;
    mode->transparentGreen = config->transparentGreen;
    mode->transparentBlue  = config->transparentBlue;
    mode->transparentAlpha = config->transparentAlpha;
    mode->transparentIndex = config->transparentIndex;

    mode->swapMethod = GLX_SWAP_UNDEFINED_OML;
}


/**
 * Get data from a GL context mode.
 * 
 * \param mode         GL context mode whose data is to be returned.
 * \param attribute    Attribute of \c mode that is to be returned.
 * \param value_return Location to store the data member of \c mode.
 * \return  If \c attribute is a valid attribute of \c mode, zero is
 *          returned.  Otherwise \c GLX_BAD_ATTRIBUTE is returned.
 */
int
_gl_get_context_mode_data(const __GLcontextModes *mode, int attribute,
			  int *value_return)
{
    switch (attribute) {
      case GLX_USE_GL:
	*value_return = GL_TRUE;
	return 0;
      case GLX_BUFFER_SIZE:
	*value_return = mode->rgbBits;
	return 0;
      case GLX_RGBA:
	*value_return = mode->rgbMode;
	return 0;
      case GLX_RED_SIZE:
	*value_return = mode->redBits;
	return 0;
      case GLX_GREEN_SIZE:
	*value_return = mode->greenBits;
	return 0;
      case GLX_BLUE_SIZE:
	*value_return = mode->blueBits;
	return 0;
      case GLX_ALPHA_SIZE:
	*value_return = mode->alphaBits;
	return 0;
      case GLX_DOUBLEBUFFER:
	*value_return = mode->doubleBufferMode;
	return 0;
      case GLX_STEREO:
	*value_return = mode->stereoMode;
	return 0;
      case GLX_AUX_BUFFERS:
	*value_return = mode->numAuxBuffers;
	return 0;
      case GLX_DEPTH_SIZE:
	*value_return = mode->depthBits;
	return 0;
      case GLX_STENCIL_SIZE:
	*value_return = mode->stencilBits;
	return 0;
      case GLX_ACCUM_RED_SIZE:
	*value_return = mode->accumRedBits;
	return 0;
      case GLX_ACCUM_GREEN_SIZE:
	*value_return = mode->accumGreenBits;
	return 0;
      case GLX_ACCUM_BLUE_SIZE:
	*value_return = mode->accumBlueBits;
	return 0;
      case GLX_ACCUM_ALPHA_SIZE:
	*value_return = mode->accumAlphaBits;
	return 0;
      case GLX_LEVEL:
	*value_return = mode->level;
	return 0;
      case GLX_TRANSPARENT_TYPE_EXT:
	*value_return = mode->transparentPixel;
	return 0;
      case GLX_TRANSPARENT_RED_VALUE:
	*value_return = mode->transparentRed;
	return 0;
      case GLX_TRANSPARENT_GREEN_VALUE:
	*value_return = mode->transparentGreen;
	return 0;
      case GLX_TRANSPARENT_BLUE_VALUE:
	*value_return = mode->transparentBlue;
	return 0;
      case GLX_TRANSPARENT_ALPHA_VALUE:
	*value_return = mode->transparentAlpha;
	return 0;
      case GLX_TRANSPARENT_INDEX_VALUE:
	*value_return = mode->transparentIndex;
	return 0;
      case GLX_X_VISUAL_TYPE:
	*value_return = mode->visualType;
	return 0;
      case GLX_CONFIG_CAVEAT:
	*value_return = mode->visualRating;
	return 0;
      case GLX_VISUAL_ID:
	*value_return = mode->visualID;
	return 0;
      case GLX_DRAWABLE_TYPE:
	*value_return = mode->drawableType;
	return 0;
      case GLX_RENDER_TYPE:
	*value_return = mode->renderType;
	return 0;
      case GLX_X_RENDERABLE:
	*value_return = mode->xRenderable;
	return 0;
      case GLX_FBCONFIG_ID:
	*value_return = mode->fbconfigID;
	return 0;
      case GLX_MAX_PBUFFER_WIDTH:
	*value_return = mode->maxPbufferWidth;
	return 0;
      case GLX_MAX_PBUFFER_HEIGHT:
	*value_return = mode->maxPbufferHeight;
	return 0;
      case GLX_MAX_PBUFFER_PIXELS:
	*value_return = mode->maxPbufferPixels;
	return 0;
      case GLX_OPTIMAL_PBUFFER_WIDTH_SGIX:
	*value_return = mode->optimalPbufferWidth;
	return 0;
      case GLX_OPTIMAL_PBUFFER_HEIGHT_SGIX:
	*value_return = mode->optimalPbufferHeight;
	return 0;
      case GLX_SWAP_METHOD_OML:
	*value_return = mode->swapMethod;
	return 0;
      case GLX_SAMPLE_BUFFERS_SGIS:
	*value_return = mode->sampleBuffers;
	return 0;
      case GLX_SAMPLES_SGIS:
	*value_return = mode->samples;
	return 0;

      /* Applications are NOT allowed to query GLX_VISUAL_SELECT_GROUP_SGIX.
       * It is ONLY for communication between the GLX client and the GLX
       * server.
       */
      case GLX_VISUAL_SELECT_GROUP_SGIX:
      default:
	return GLX_BAD_ATTRIBUTE;
    }
}
#endif /* !defined(IN_MINI_GLX) */


/**
 * Allocate a linked list of \c __GLcontextModes structures.  The fields of
 * each structure will be initialized to "reasonable" default values.  In
 * most cases this is the default value defined by table 3.4 of the GLX
 * 1.3 specification.  This means that most values are either initialized to
 * zero or \c GLX_DONT_CARE (which is -1).  As support for additional
 * extensions is added, the new values will be initialized to appropriate
 * values from the extension specification.
 * 
 * \param count         Number of structures to allocate.
 * \param minimum_size  Minimum size of a structure to allocate.  This allows
 *                      for differences in the version of the
 *                      \c __GLcontextModes stucture used in libGL and in a
 *                      DRI-based driver.
 * \returns A pointer to the first element in a linked list of \c count
 *          stuctures on success, or \c NULL on failure.
 * 
 * \warning Use of \c minimum_size does \b not guarantee binary compatibility.
 *          The fundamental assumption is that if the \c minimum_size
 *          specified by the driver and the size of the \c __GLcontextModes
 *          structure in libGL is the same, then the meaning of each byte in
 *          the structure is the same in both places.  \b Be \b careful!
 *          Basically this means that fields have to be added in libGL and
 *          then propagated to drivers.  Drivers should \b never arbitrarilly
 *          extend the \c __GLcontextModes data-structure.
 */
__GLcontextModes *
_gl_context_modes_create( unsigned count, size_t minimum_size )
{
   const size_t size = (minimum_size > sizeof( __GLcontextModes ))
       ? minimum_size : sizeof( __GLcontextModes );
   __GLcontextModes * base = NULL;
   __GLcontextModes ** next;
   unsigned   i;

   next = & base;
   for ( i = 0 ; i < count ; i++ ) {
      *next = (__GLcontextModes *) _mesa_malloc( size );
      if ( *next == NULL ) {
	 _gl_context_modes_destroy( base );
	 base = NULL;
	 break;
      }
      
      (void) __glXMemset( *next, 0, size );
      (*next)->visualID = GLX_DONT_CARE;
      (*next)->visualType = GLX_DONT_CARE;
      (*next)->visualRating = GLX_NONE;
      (*next)->transparentPixel = GLX_NONE;
      (*next)->transparentRed = GLX_DONT_CARE;
      (*next)->transparentGreen = GLX_DONT_CARE;
      (*next)->transparentBlue = GLX_DONT_CARE;
      (*next)->transparentAlpha = GLX_DONT_CARE;
      (*next)->transparentIndex = GLX_DONT_CARE;
      (*next)->xRenderable = GLX_DONT_CARE;
      (*next)->fbconfigID = GLX_DONT_CARE;
      (*next)->swapMethod = GLX_SWAP_UNDEFINED_OML;

      next = & ((*next)->next);
   }

   return base;
}


/**
 * Destroy a linked list of \c __GLcontextModes structures created by
 * \c _gl_context_modes_create.
 * 
 * \param modes  Linked list of structures to be destroyed.  All structres
 *               in the list will be freed.
 */
void
_gl_context_modes_destroy( __GLcontextModes * modes )
{
   while ( modes != NULL ) {
      __GLcontextModes * const next = modes->next;

      _mesa_free( modes );
      modes = next;
   }
}


/**
 * Find a context mode matching a Visual ID.
 *
 * \param modes  List list of context-mode structures to be searched.
 * \param vid    Visual ID to be found.
 * \returns A pointer to a context-mode in \c modes if \c vid was found in
 *          the list, or \c NULL if it was not.
 */

__GLcontextModes *
_gl_context_modes_find_visual( __GLcontextModes * modes, int vid )
{
    while ( modes != NULL ) {
	if ( modes->visualID == vid ) {
	    break;
	}

	modes = modes->next;
    }

    return modes;
}


/**
 * Determine if two context-modes are the same.  This is intended to be used
 * by libGL implementations to compare to sets of driver generated FBconfigs.
 * 
 * \param a  Context-mode to be compared.
 * \param b  Context-mode to be compared.
 * \returns \c GL_TRUE if the two context-modes are the same.  \c GL_FALSE is
 *          returned otherwise.
 */
GLboolean
_gl_context_modes_are_same( const __GLcontextModes * a,
			    const __GLcontextModes * b )
{
    return( (a->rgbMode == b->rgbMode) &&
	    (a->floatMode == b->floatMode) &&
	    (a->colorIndexMode == b->colorIndexMode) &&
	    (a->doubleBufferMode == b->doubleBufferMode) &&
	    (a->stereoMode == b->stereoMode) &&
	    (a->redBits == b->redBits) &&
	    (a->greenBits == b->greenBits) &&
	    (a->blueBits == b->blueBits) &&
	    (a->alphaBits == b->alphaBits) &&
#if 0 /* For some reason these don't get set on the client-side in libGL. */
	    (a->redMask == b->redMask) &&
	    (a->greenMask == b->greenMask) &&
	    (a->blueMask == b->blueMask) &&
	    (a->alphaMask == b->alphaMask) &&
#endif
	    (a->rgbBits == b->rgbBits) &&
	    (a->indexBits == b->indexBits) &&
	    (a->accumRedBits == b->accumRedBits) &&
	    (a->accumGreenBits == b->accumGreenBits) &&
	    (a->accumBlueBits == b->accumBlueBits) &&
	    (a->accumAlphaBits == b->accumAlphaBits) &&
	    (a->depthBits == b->depthBits) &&
	    (a->stencilBits == b->stencilBits) &&
	    (a->numAuxBuffers == b->numAuxBuffers) &&
	    (a->level == b->level) &&
	    (a->pixmapMode == b->pixmapMode) &&
	    (a->visualRating == b->visualRating) &&

	    (a->transparentPixel == b->transparentPixel) &&

	    ((a->transparentPixel != GLX_TRANSPARENT_RGB) ||
	     ((a->transparentRed == b->transparentRed) &&
	      (a->transparentGreen == b->transparentGreen) &&
	      (a->transparentBlue == b->transparentBlue) &&
	      (a->transparentAlpha == b->transparentAlpha))) &&

	    ((a->transparentPixel != GLX_TRANSPARENT_INDEX) || 
	     (a->transparentIndex == b->transparentIndex)) &&

	    (a->sampleBuffers == b->sampleBuffers) &&
	    (a->samples == b->samples) &&
	    ((a->drawableType & b->drawableType) != 0) &&
	    (a->renderType == b->renderType) &&
	    (a->maxPbufferWidth == b->maxPbufferWidth) &&
	    (a->maxPbufferHeight == b->maxPbufferHeight) &&
	    (a->maxPbufferPixels == b->maxPbufferPixels) &&
	    (a->optimalPbufferWidth == b->optimalPbufferWidth) &&
	    (a->optimalPbufferHeight == b->optimalPbufferHeight) &&
	    (a->swapMethod == b->swapMethod) );
}