visualConfigs.c revision 1b5d61b8 
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
55#include "capabilities.h"
56#include "visualConfigs.h"
57#include "darwinfb.h"
58
59/* Based originally on code from indirect.c which was based on code from i830_dri.c. */
60__GLXconfig *__glXAquaCreateVisualConfigs(int *numConfigsPtr, int screenNumber) {
61    int numConfigs = 0;
62    __GLXconfig *visualConfigs, *c;
63    struct glCapabilities caps;
64    struct glCapabilitiesConfig *conf;
65    int stereo, depth, aux, buffers, stencil, accum, color, msample;
66
67    if(getGlCapabilities(&caps)) {
68        ErrorF("error from getGlCapabilities()!\n");
69        return NULL;
70    }
71
72    /*
73     conf->stereo is 0 or 1, but we need at least 1 iteration of the loop,
74     so we treat a true conf->stereo as 2.
75
76     The depth size is 0 or 24.  Thus we do 2 iterations for that.
77
78     conf->aux_buffers (when available/non-zero) result in 2 iterations instead of 1.
79
80     conf->buffers indicates whether we have single or double buffering.
81
82     conf->total_stencil_bit_depths
83
84     conf->total_color_buffers indicates the RGB/RGBA color depths.
85
86     conf->total_accum_buffers iterations for accum (with at least 1 if equal to 0)
87
88     conf->total_depth_buffer_depths
89
90     conf->multisample_buffers iterations (with at least 1 if equal to 0).  We add 1
91     for the 0 multisampling config.
92
93     */
94
95    assert(NULL != caps.configurations);
96
97    numConfigs = 0;
98
99    for(conf = caps.configurations; conf; conf = conf->next) {
100        if(conf->total_color_buffers <= 0)
101            continue;
102
103        numConfigs += (conf->stereo ? 2 : 1)
104	    * (conf->aux_buffers ? 2 : 1)
105	    * conf->buffers
106	    * ((conf->total_stencil_bit_depths > 0) ? conf->total_stencil_bit_depths : 1)
107	    * conf->total_color_buffers
108	    * ((conf->total_accum_buffers > 0) ? conf->total_accum_buffers : 1)
109	    * conf->total_depth_buffer_depths
110	    * (conf->multisample_buffers + 1);
111    }
112
113    if(numConfigsPtr)
114        *numConfigsPtr = numConfigs;
115
116    visualConfigs = calloc(sizeof(*visualConfigs), numConfigs);
117
118    if(NULL == visualConfigs) {
119        ErrorF("xcalloc failure when allocating visualConfigs\n");
120        freeGlCapabilities(&caps);
121        return NULL;
122    }
123
124    c = visualConfigs; /* current buffer */
125    for(conf = caps.configurations; conf; conf = conf->next) {
126        for(stereo = 0; stereo < (conf->stereo ? 2 : 1); ++stereo) {
127            for(aux = 0; aux < (conf->aux_buffers ? 2 : 1); ++aux) {
128                for(buffers = 0; buffers < conf->buffers; ++buffers) {
129                    for(stencil = 0; stencil < ((conf->total_stencil_bit_depths > 0) ?
130                                                conf->total_stencil_bit_depths : 1); ++stencil) {
131                        for(color = 0; color < conf->total_color_buffers; ++color) {
132                            for(accum = 0; accum < ((conf->total_accum_buffers > 0) ?
133                                                    conf->total_accum_buffers : 1); ++accum) {
134                                for(depth = 0; depth < conf->total_depth_buffer_depths; ++depth) {
135                                    for(msample = 0; msample < (conf->multisample_buffers + 1); ++msample) {
136
137                                        // Global
138                                        c->visualID = -1;
139                                        c->visualType = GLX_TRUE_COLOR;
140                                        c->next = c + 1;
141
142                                        c->level = 0;
143                                        c->indexBits = 0;
144
145                                        if(conf->accelerated) {
146                                            c->visualRating = GLX_NONE;
147                                        } else {
148                                            c->visualRating = GLX_SLOW_VISUAL_EXT;
149                                        }
150
151                                        c->transparentPixel = GLX_NONE;
152                                        c->transparentRed = GLX_NONE;
153                                        c->transparentGreen = GLX_NONE;
154                                        c->transparentBlue = GLX_NONE;
155                                        c->transparentAlpha = GLX_NONE;
156                                        c->transparentIndex = GLX_NONE;
157
158                                        c->visualSelectGroup = 0;
159
160                                        c->swapMethod = GLX_SWAP_UNDEFINED_OML;
161
162                                        // Stereo
163                                        c->stereoMode = stereo ? TRUE : FALSE;
164
165                                        // Aux buffers
166                                        c->numAuxBuffers = aux ? conf->aux_buffers : 0;
167
168                                        // Double Buffered
169                                        c->doubleBufferMode = buffers ? TRUE : FALSE;
170
171                                        // Stencil Buffer
172                                        if(conf->total_stencil_bit_depths > 0) {
173                                            c->stencilBits = conf->stencil_bit_depths[stencil];
174                                        } else {
175                                            c->stencilBits = 0;
176                                        }
177
178                                        // Color
179                                        if(GLCAPS_COLOR_BUF_INVALID_VALUE != conf->color_buffers[color].a) {
180                                            c->alphaBits = conf->color_buffers[color].a;
181                                        } else {
182                                            c->alphaBits = 0;
183                                        }
184                                        c->redBits   = conf->color_buffers[color].r;
185                                        c->greenBits = conf->color_buffers[color].g;
186                                        c->blueBits  = conf->color_buffers[color].b;
187
188                                        c->rgbBits = c->alphaBits + c->redBits + c->greenBits + c->blueBits;
189
190                                        c->alphaMask = AM_ARGB(c->alphaBits, c->redBits, c->greenBits, c->blueBits);
191                                        c->redMask   = RM_ARGB(c->alphaBits, c->redBits, c->greenBits, c->blueBits);
192                                        c->greenMask = GM_ARGB(c->alphaBits, c->redBits, c->greenBits, c->blueBits);
193                                        c->blueMask  = BM_ARGB(c->alphaBits, c->redBits, c->greenBits, c->blueBits);
194
195                                        // Accumulation Buffers
196                                        if(conf->total_accum_buffers > 0) {
197                                            c->accumRedBits = conf->accum_buffers[accum].r;
198                                            c->accumGreenBits = conf->accum_buffers[accum].g;
199                                            c->accumBlueBits = conf->accum_buffers[accum].b;
200                                            if(GLCAPS_COLOR_BUF_INVALID_VALUE != conf->accum_buffers[accum].a) {
201                                                c->accumAlphaBits = conf->accum_buffers[accum].a;
202                                            } else {
203                                                c->accumAlphaBits = 0;
204                                            }
205                                        } else {
206                                            c->accumRedBits = 0;
207                                            c->accumGreenBits = 0;
208                                            c->accumBlueBits = 0;
209                                            c->accumAlphaBits = 0;
210                                        }
211
212                                        // Depth
213                                        c->depthBits = conf->depth_buffers[depth];
214
215                                        // MultiSample
216                                        if(msample > 0) {
217                                            c->samples = conf->multisample_samples;
218                                            c->sampleBuffers = conf->multisample_buffers;
219                                        } else {
220                                            c->samples = 0;
221                                            c->sampleBuffers = 0;
222                                        }
223
224                                        /*
225                                         * The Apple libGL supports GLXPixmaps and
226                                         * GLXPbuffers in direct mode.
227                                         */
228                                        /* SGIX_fbconfig / GLX 1.3 */
229                                        c->drawableType = GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
230                                        c->renderType = GLX_RGBA_BIT;
231                                        c->fbconfigID = -1;
232
233                                        /* SGIX_pbuffer / GLX 1.3 */
234
235                                        /*
236                                         * The CGL layer provides a way of retrieving
237                                         * the maximum pbuffer width/height, but only
238                                         * if we create a context and call glGetIntegerv.
239                                         *
240                                         * The following values are from a test program
241                                         * that does so.
242                                         */
243                                        c->maxPbufferWidth = 8192;
244                                        c->maxPbufferHeight = 8192;
245                                        c->maxPbufferPixels = /*Do we need this?*/ 0;
246                                        /*
247                                         * There is no introspection for this sort of thing
248                                         * with CGL.  What should we do realistically?
249                                         */
250                                        c->optimalPbufferWidth = 0;
251                                        c->optimalPbufferHeight = 0;
252
253                                        /* EXT_texture_from_pixmap */
254                                        c->bindToTextureRgb = 0;
255                                        c->bindToTextureRgba = 0;
256                                        c->bindToMipmapTexture = 0;
257                                        c->bindToTextureTargets = 0;
258                                        c->yInverted = 0;
259
260                                        /* EXT_framebuffer_sRGB */
261                                        c->sRGBCapable = GL_FALSE;
262
263                                        c = c->next;
264                                    }
265                                }
266                            }
267                        }
268                    }
269                }
270            }
271        }
272    }
273
274    (c-1)->next = NULL;
275
276    if (c - visualConfigs != numConfigs) {
277        FatalError("numConfigs calculation error in setVisualConfigs!  numConfigs is %d  i is %d\n", numConfigs, (int)(c - visualConfigs));
278    }
279
280    freeGlCapabilities(&caps);
281    return visualConfigs;
282}
283