summaryrefslogtreecommitdiff
path: root/src/glx/glxconfig.c
blob: 1d9678f48cdac125a6845e32a13c1593673201ad (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
/*
 * (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 glxconfig.c
 * Utility routines for working with \c struct glx_config 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>
 */

#include <GL/glx.h>
#include "GL/glxint.h"
#include <stdlib.h>
#include <string.h>

#include "glxconfig.h"

#define NUM_VISUAL_TYPES   6

/**
 * Get data from a GLX config
 * 
 * \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.
 */
_X_HIDDEN int
glx_config_get(struct glx_config * 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;
#ifndef GLX_USE_APPLEGL               /* This isn't supported by CGL. */
   case GLX_TRANSPARENT_TYPE_EXT:
      *value_return = mode->transparentPixel;
      return 0;
#endif
   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;
#ifndef GLX_USE_APPLEGL               /* These aren't supported by CGL. */
   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;
#endif
   case GLX_SAMPLE_BUFFERS_SGIS:
      *value_return = mode->sampleBuffers;
      return 0;
   case GLX_SAMPLES_SGIS:
      *value_return = mode->samples;
      return 0;
   case GLX_BIND_TO_TEXTURE_RGB_EXT:
      *value_return = mode->bindToTextureRgb;
      return 0;
   case GLX_BIND_TO_TEXTURE_RGBA_EXT:
      *value_return = mode->bindToTextureRgba;
      return 0;
   case GLX_BIND_TO_MIPMAP_TEXTURE_EXT:
      *value_return = mode->bindToMipmapTexture == GL_TRUE ? GL_TRUE :
         GL_FALSE;
      return 0;
   case GLX_BIND_TO_TEXTURE_TARGETS_EXT:
      *value_return = mode->bindToTextureTargets;
      return 0;
   case GLX_Y_INVERTED_EXT:
      *value_return = mode->yInverted;
      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;
   }
}


/**
 * Allocate a linked list of \c struct glx_config 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 struct glx_config 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.
 */
_X_HIDDEN struct glx_config *
glx_config_create_list(unsigned count)
{
   const size_t size = sizeof(struct glx_config);
   struct glx_config *base = NULL;
   struct glx_config **next;
   unsigned i;

   next = &base;
   for (i = 0; i < count; i++) {
      *next = (struct glx_config *) malloc(size);
      if (*next == NULL) {
	 glx_config_destroy_list(base);
	 base = NULL;
	 break;
      }

      (void) memset(*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)->bindToTextureRgb = GLX_DONT_CARE;
      (*next)->bindToTextureRgba = GLX_DONT_CARE;
      (*next)->bindToMipmapTexture = GLX_DONT_CARE;
      (*next)->bindToTextureTargets = GLX_DONT_CARE;
      (*next)->yInverted = GLX_DONT_CARE;

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

   return base;
}

_X_HIDDEN void
glx_config_destroy_list(struct glx_config *configs)
{
   while (configs != NULL) {
      struct glx_config *const next = configs->next;

      free(configs);
      configs = 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.
 */

_X_HIDDEN struct glx_config *
glx_config_find_visual(struct glx_config *configs, int vid)
{
   struct glx_config *c;

   for (c = configs; c != NULL; c = c->next)
      if (c->visualID == vid)
	 return c;

   return NULL;
}

_X_HIDDEN struct glx_config *
glx_config_find_fbconfig(struct glx_config *configs, int fbid)
{
   struct glx_config *c;

   for (c = configs; c != NULL; c = c->next)
      if (c->fbconfigID == fbid)
	 return c;

   return NULL;
}