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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5564 | serge | 1 | /* |
| 2 | * Copyright © 2011 Intel Corporation |
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| 3 | * |
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| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 5 | * copy of this software and associated documentation files (the "Software"), |
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| 6 | * to deal in the Software without restriction, including without limitation |
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| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
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| 9 | * Software is furnished to do so, subject to the following conditions: |
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| 10 | * |
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| 11 | * The above copyright notice and this permission notice (including the next |
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| 12 | * paragraph) shall be included in all copies or substantial portions of the |
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| 13 | * Software. |
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| 14 | * |
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| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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| 21 | * DEALINGS IN THE SOFTWARE. |
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| 22 | */ |
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| 23 | |||
| 24 | #include |
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| 25 | #include "glxclient.h" |
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| 26 | #include "glx_error.h" |
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| 27 | #include |
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| 28 | #include |
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| 29 | |||
| 30 | #include |
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| 31 | |||
| 32 | #if INT_MAX != 2147483647 |
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| 33 | #error This code requires sizeof(uint32_t) == sizeof(int). |
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| 34 | #endif |
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| 35 | |||
| 36 | _X_HIDDEN GLXContext |
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| 37 | glXCreateContextAttribsARB(Display *dpy, GLXFBConfig config, |
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| 38 | GLXContext share_context, Bool direct, |
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| 39 | const int *attrib_list) |
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| 40 | { |
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| 41 | xcb_connection_t *const c = XGetXCBConnection(dpy); |
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| 42 | struct glx_config *const cfg = (struct glx_config *) config; |
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| 43 | struct glx_context *const share = (struct glx_context *) share_context; |
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| 44 | struct glx_context *gc = NULL; |
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| 45 | unsigned num_attribs = 0; |
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| 46 | struct glx_screen *psc; |
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| 47 | xcb_generic_error_t *err; |
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| 48 | xcb_void_cookie_t cookie; |
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| 49 | unsigned dummy_err = 0; |
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| 50 | |||
| 51 | |||
| 52 | if (dpy == NULL || cfg == NULL) |
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| 53 | return NULL; |
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| 54 | |||
| 55 | /* This means that either the caller passed the wrong display pointer or |
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| 56 | * one of the internal GLX data structures (probably the fbconfig) has an |
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| 57 | * error. There is nothing sensible to do, so return an error. |
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| 58 | */ |
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| 59 | psc = GetGLXScreenConfigs(dpy, cfg->screen); |
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| 60 | if (psc == NULL) |
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| 61 | return NULL; |
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| 62 | |||
| 63 | assert(cfg->screen == psc->scr); |
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| 64 | |||
| 65 | /* Count the number of attributes specified by the application. All |
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| 66 | * attributes appear in pairs, except the terminating None. |
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| 67 | */ |
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| 68 | if (attrib_list != NULL) { |
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| 69 | for (/* empty */; attrib_list[num_attribs * 2] != 0; num_attribs++) |
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| 70 | /* empty */ ; |
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| 71 | } |
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| 72 | |||
| 73 | if (direct && psc->vtable->create_context_attribs) { |
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| 74 | /* GLX drops the error returned by the driver. The expectation is that |
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| 75 | * an error will also be returned by the server. The server's error |
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| 76 | * will be delivered to the application. |
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| 77 | */ |
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| 78 | gc = psc->vtable->create_context_attribs(psc, cfg, share, num_attribs, |
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| 79 | (const uint32_t *) attrib_list, |
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| 80 | &dummy_err); |
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| 81 | } |
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| 82 | |||
| 83 | if (gc == NULL) { |
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| 84 | #ifdef GLX_USE_APPLEGL |
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| 85 | gc = applegl_create_context(psc, cfg, share, 0); |
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| 86 | #else |
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| 87 | gc = indirect_create_context_attribs(psc, cfg, share, num_attribs, |
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| 88 | (const uint32_t *) attrib_list, |
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| 89 | &dummy_err); |
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| 90 | #endif |
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| 91 | } |
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| 92 | |||
| 93 | gc->xid = xcb_generate_id(c); |
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| 94 | gc->share_xid = (share != NULL) ? share->xid : 0; |
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| 95 | |||
| 96 | /* The manual pages for glXCreateContext and glXCreateNewContext say: |
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| 97 | * |
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| 98 | * "NULL is returned if execution fails on the client side." |
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| 99 | * |
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| 100 | * If the server generates an error, the application is supposed to catch |
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| 101 | * the protocol error and handle it. Part of handling the error is freeing |
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| 102 | * the possibly non-NULL value returned by this function. |
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| 103 | */ |
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| 104 | cookie = |
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| 105 | xcb_glx_create_context_attribs_arb_checked(c, |
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| 106 | gc->xid, |
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| 107 | cfg->fbconfigID, |
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| 108 | cfg->screen, |
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| 109 | gc->share_xid, |
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| 110 | gc->isDirect, |
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| 111 | num_attribs, |
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| 112 | (const uint32_t *) |
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| 113 | attrib_list); |
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| 114 | err = xcb_request_check(c, cookie); |
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| 115 | if (err != NULL) { |
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| 116 | gc->vtable->destroy(gc); |
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| 117 | gc = NULL; |
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| 118 | |||
| 119 | __glXSendErrorForXcb(dpy, err); |
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| 120 | free(err); |
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| 121 | } |
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| 122 | |||
| 123 | return (GLXContext) gc; |
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| 124 | } |