visualConfigs.c revision 35c4bbdf 
1/*
2 * Copyright (c) 2007, 2008 Apple Inc.
3 * Copyright (c) 2004 Torrey T. Lyons. All Rights Reserved.
4 * Copyright (c) 2002 Greg Parker. All Rights Reserved.
5 *
6 * Portions of this file are copied from Mesa's xf86glx.c,
7 * which contains the following copyright:
8 *
9 * Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
10 * All Rights Reserved.
11 *
12 * Permission is hereby granted, free of charge, to any person obtaining a
13 * copy of this software and associated documentation files (the "Software"),
14 * to deal in the Software without restriction, including without limitation
15 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
16 * and/or sell copies of the Software, and to permit persons to whom the
17 * Software is furnished to do so, subject to the following conditions:
18 *
19 * The above copyright notice and this permission notice shall be included in
20 * all copies or substantial portions of the Software.
21 *
22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
23 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
24 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
25 * THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
26 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
27 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
28 * DEALINGS IN THE SOFTWARE.
29 */
30
31#ifdef HAVE_DIX_CONFIG_H
32#include <dix-config.h>
33#endif
34
35#include "dri.h"
36
37#include <OpenGL/OpenGL.h>
38#include <OpenGL/gl.h>
39#include <OpenGL/glext.h>
40#include <OpenGL/CGLContext.h>
41
42#include <GL/glxproto.h>
43#include <windowstr.h>
44#include <resource.h>
45#include <GL/glxint.h>
46#include <GL/glxtokens.h>
47#include <scrnintstr.h>
48#include <glxserver.h>
49#include <glxscreens.h>
50#include <glxdrawable.h>
51#include <glxcontext.h>
52#include <glxext.h>
53#include <glxutil.h>
54#include <GL/internal/glcore.h>
55
56#include "capabilities.h"
57#include "visualConfigs.h"
58#include "darwinfb.h"
59
60/* Based originally on code from indirect.c which was based on code from i830_dri.c. */
61__GLXconfig *__glXAquaCreateVisualConfigs(int *numConfigsPtr, int screenNumber) {
62    int numConfigs = 0;
63    __GLXconfig *visualConfigs, *c;
64    struct glCapabilities caps;
65    struct glCapabilitiesConfig *conf;
66    int stereo, depth, aux, buffers, stencil, accum, color, msample;
67
68    if(getGlCapabilities(&caps)) {
69        ErrorF("error from getGlCapabilities()!\n");
70        return NULL;
71    }
72
73    /*
74     conf->stereo is 0 or 1, but we need at least 1 iteration of the loop,
75     so we treat a true conf->stereo as 2.
76
77     The depth size is 0 or 24.  Thus we do 2 iterations for that.
78
79     conf->aux_buffers (when available/non-zero) result in 2 iterations instead of 1.
80
81     conf->buffers indicates whether we have single or double buffering.
82
83     conf->total_stencil_bit_depths
84
85     conf->total_color_buffers indicates the RGB/RGBA color depths.
86
87     conf->total_accum_buffers iterations for accum (with at least 1 if equal to 0)
88
89     conf->total_depth_buffer_depths
90
91     conf->multisample_buffers iterations (with at least 1 if equal to 0).  We add 1
92     for the 0 multisampling config.
93
94     */
95
96    assert(NULL != caps.configurations);
97
98    numConfigs = 0;
99
100    for(conf = caps.configurations; conf; conf = conf->next) {
101        if(conf->total_color_buffers <= 0)
102            continue;
103
104        numConfigs += (conf->stereo ? 2 : 1)
105	    * (conf->aux_buffers ? 2 : 1)
106	    * conf->buffers
107	    * ((conf->total_stencil_bit_depths > 0) ? conf->total_stencil_bit_depths : 1)
108	    * conf->total_color_buffers
109	    * ((conf->total_accum_buffers > 0) ? conf->total_accum_buffers : 1)
110	    * conf->total_depth_buffer_depths
111	    * (conf->multisample_buffers + 1);
112    }
113
114    if(numConfigsPtr)
115        *numConfigsPtr = numConfigs;
116
117    visualConfigs = calloc(sizeof(*visualConfigs), numConfigs);
118
119    if(NULL == visualConfigs) {
120        ErrorF("xcalloc failure when allocating visualConfigs\n");
121        freeGlCapabilities(&caps);
122        return NULL;
123    }
124
125    c = visualConfigs; /* current buffer */
126    for(conf = caps.configurations; conf; conf = conf->next) {
127        for(stereo = 0; stereo < (conf->stereo ? 2 : 1); ++stereo) {
128            for(aux = 0; aux < (conf->aux_buffers ? 2 : 1); ++aux) {
129                for(buffers = 0; buffers < conf->buffers; ++buffers) {
130                    for(stencil = 0; stencil < ((conf->total_stencil_bit_depths > 0) ?
131                                                conf->total_stencil_bit_depths : 1); ++stencil) {
132                        for(color = 0; color < conf->total_color_buffers; ++color) {
133                            for(accum = 0; accum < ((conf->total_accum_buffers > 0) ?
134                                                    conf->total_accum_buffers : 1); ++accum) {
135                                for(depth = 0; depth < conf->total_depth_buffer_depths; ++depth) {
136                                    for(msample = 0; msample < (conf->multisample_buffers + 1); ++msample) {
137
138                                        // Global
139                                        c->visualID = -1;
140                                        c->visualType = GLX_TRUE_COLOR;
141                                        c->next = c + 1;
142
143                                        c->level = 0;
144                                        c->indexBits = 0;
145
146                                        if(conf->accelerated) {
147                                            c->visualRating = GLX_NONE;
148                                        } else {
149                                            c->visualRating = GLX_SLOW_VISUAL_EXT;
150                                        }
151
152                                        c->transparentPixel = GLX_NONE;
153                                        c->transparentRed = GLX_NONE;
154                                        c->transparentGreen = GLX_NONE;
155                                        c->transparentBlue = GLX_NONE;
156                                        c->transparentAlpha = GLX_NONE;
157                                        c->transparentIndex = GLX_NONE;
158
159                                        c->visualSelectGroup = 0;
160
161                                        c->swapMethod = GLX_SWAP_UNDEFINED_OML;
162
163                                        // Stereo
164                                        c->stereoMode = stereo ? TRUE : FALSE;
165
166                                        // Aux buffers
167                                        c->numAuxBuffers = aux ? conf->aux_buffers : 0;
168
169                                        // Double Buffered
170                                        c->doubleBufferMode = buffers ? TRUE : FALSE;
171
172                                        // Stencil Buffer
173                                        if(conf->total_stencil_bit_depths > 0) {
174                                            c->stencilBits = conf->stencil_bit_depths[stencil];
175                                        } else {
176                                            c->stencilBits = 0;
177                                        }
178
179                                        // Color
180                                        if(GLCAPS_COLOR_BUF_INVALID_VALUE != conf->color_buffers[color].a) {
181                                            c->alphaBits = conf->color_buffers[color].a;
182                                        } else {
183                                            c->alphaBits = 0;
184                                        }
185                                        c->redBits   = conf->color_buffers[color].r;
186                                        c->greenBits = conf->color_buffers[color].g;
187                                        c->blueBits  = conf->color_buffers[color].b;
188
189                                        c->rgbBits = c->alphaBits + c->redBits + c->greenBits + c->blueBits;
190
191                                        c->alphaMask = AM_ARGB(c->alphaBits, c->redBits, c->greenBits, c->blueBits);
192                                        c->redMask   = RM_ARGB(c->alphaBits, c->redBits, c->greenBits, c->blueBits);
193                                        c->greenMask = GM_ARGB(c->alphaBits, c->redBits, c->greenBits, c->blueBits);
194                                        c->blueMask  = BM_ARGB(c->alphaBits, c->redBits, c->greenBits, c->blueBits);
195
196                                        // Accumulation Buffers
197                                        if(conf->total_accum_buffers > 0) {
198                                            c->accumRedBits = conf->accum_buffers[accum].r;
199                                            c->accumGreenBits = conf->accum_buffers[accum].g;
200                                            c->accumBlueBits = conf->accum_buffers[accum].b;
201                                            if(GLCAPS_COLOR_BUF_INVALID_VALUE != conf->accum_buffers[accum].a) {
202                                                c->accumAlphaBits = conf->accum_buffers[accum].a;
203                                            } else {
204                                                c->accumAlphaBits = 0;
205                                            }
206                                        } else {
207                                            c->accumRedBits = 0;
208                                            c->accumGreenBits = 0;
209                                            c->accumBlueBits = 0;
210                                            c->accumAlphaBits = 0;
211                                        }
212
213                                        // Depth
214                                        c->depthBits = conf->depth_buffers[depth];
215
216                                        // MultiSample
217                                        if(msample > 0) {
218                                            c->samples = conf->multisample_samples;
219                                            c->sampleBuffers = conf->multisample_buffers;
220                                        } else {
221                                            c->samples = 0;
222                                            c->sampleBuffers = 0;
223                                        }
224
225                                        /*
226                                         * The Apple libGL supports GLXPixmaps and
227                                         * GLXPbuffers in direct mode.
228                                         */
229                                        /* SGIX_fbconfig / GLX 1.3 */
230                                        c->drawableType = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
231                                        c->renderType = GLX_RGBA_BIT;
232                                        c->xRenderable = GL_TRUE;
233                                        c->fbconfigID = -1;
234
235                                        /* SGIX_pbuffer / GLX 1.3 */
236
237                                        /*
238                                         * The CGL layer provides a way of retrieving
239                                         * the maximum pbuffer width/height, but only
240                                         * if we create a context and call glGetIntegerv.
241                                         *
242                                         * The following values are from a test program
243                                         * that does so.
244                                         */
245                                        c->maxPbufferWidth = 8192;
246                                        c->maxPbufferHeight = 8192;
247                                        c->maxPbufferPixels = /*Do we need this?*/ 0;
248                                        /*
249                                         * There is no introspection for this sort of thing
250                                         * with CGL.  What should we do realistically?
251                                         */
252                                        c->optimalPbufferWidth = 0;
253                                        c->optimalPbufferHeight = 0;
254
255                                        /* EXT_texture_from_pixmap */
256                                        c->bindToTextureRgb = 0;
257                                        c->bindToTextureRgba = 0;
258                                        c->bindToMipmapTexture = 0;
259                                        c->bindToTextureTargets = 0;
260                                        c->yInverted = 0;
261
262                                        /* EXT_framebuffer_sRGB */
263                                        c->sRGBCapable = GL_FALSE;
264
265                                        c = c->next;
266                                    }
267                                }
268                            }
269                        }
270                    }
271                }
272            }
273        }
274    }
275
276    (c-1)->next = NULL;
277
278    if (c - visualConfigs != numConfigs) {
279        FatalError("numConfigs calculation error in setVisualConfigs!  numConfigs is %d  i is %d\n", numConfigs, (int)(c - visualConfigs));
280    }
281
282    freeGlCapabilities(&caps);
283    return visualConfigs;
284}
285