Details | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4358 | Serge | 1 | /* |
| 2 | * Copyright © 2011 Intel Corporation |
||
| 3 | * |
||
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
||
| 5 | * copy of this software and associated documentation files (the "Software"), |
||
| 6 | * to deal in the Software without restriction, including without limitation |
||
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
||
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
||
| 9 | * Software is furnished to do so, subject to the following conditions: |
||
| 10 | * |
||
| 11 | * The above copyright notice and this permission notice (including the next |
||
| 12 | * paragraph) shall be included in all copies or substantial portions of the |
||
| 13 | * Software. |
||
| 14 | * |
||
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
||
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
||
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
||
| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
||
| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
||
| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
||
| 21 | * DEALINGS IN THE SOFTWARE. |
||
| 22 | */ |
||
| 23 | |||
| 24 | #include |
||
| 25 | #include |
||
| 26 | |||
| 27 | #include "glxclient.h" |
||
| 28 | #include |
||
| 29 | #include |
||
| 30 | |||
| 31 | _X_HIDDEN void |
||
| 32 | __glX_send_client_info(struct glx_display *glx_dpy) |
||
| 33 | { |
||
| 34 | const unsigned ext_length = strlen("GLX_ARB_create_context"); |
||
| 35 | const unsigned prof_length = strlen("_profile"); |
||
| 36 | char *gl_extension_string; |
||
| 37 | int gl_extension_length; |
||
| 38 | xcb_connection_t *c; |
||
| 39 | Bool any_screen_has_ARB_create_context = False; |
||
| 40 | Bool any_screen_has_ARB_create_context_profile = False; |
||
| 41 | unsigned i; |
||
| 42 | static const uint32_t gl_versions[] = { |
||
| 43 | 1, 4, |
||
| 44 | }; |
||
| 45 | static const uint32_t gl_versions_profiles[] = { |
||
| 46 | 1, 4, 0x00000000, |
||
| 47 | }; |
||
| 48 | static const char glx_extensions[] = |
||
| 49 | "GLX_ARB_create_context GLX_ARB_create_context_profile"; |
||
| 50 | |||
| 51 | /* There are three possible flavors of the client info structure that the |
||
| 52 | * client could send to the server. The version sent depends on the |
||
| 53 | * combination of GLX versions and extensions supported by the client and |
||
| 54 | * the server. |
||
| 55 | * |
||
| 56 | * Server supports Client sends |
||
| 57 | * ---------------------------------------------------------------------- |
||
| 58 | * GLX version = 1.0 Nothing. |
||
| 59 | * |
||
| 60 | * GLX version >= 1.1 struct GLXClientInfo |
||
| 61 | * |
||
| 62 | * GLX version >= 1.4 and |
||
| 63 | * GLX_ARB_create_context struct glXSetClientInfoARB |
||
| 64 | * |
||
| 65 | * GLX version >= 1.4 and |
||
| 66 | * GLX_ARB_create_context_profile struct glXSetClientInfo2ARB |
||
| 67 | * |
||
| 68 | * GLX_ARB_create_context and GLX_ARB_create_context_profile use FBConfigs, |
||
| 69 | * and these only exist in GLX 1.4 or with GLX_SGIX_fbconfig. I can't |
||
| 70 | * imagine an implementation that supports GLX_SGIX_fbconfig and |
||
| 71 | * GLX_ARB_create_context but not GLX 1.4. Making GLX 1.4 a hard |
||
| 72 | * requirement in this case does not seem like a limitation. |
||
| 73 | * |
||
| 74 | * This library currently only supports struct GLXClientInfo. |
||
| 75 | */ |
||
| 76 | |||
| 77 | if (glx_dpy->majorVersion == 1 && glx_dpy->minorVersion == 0) |
||
| 78 | return; |
||
| 79 | |||
| 80 | /* Determine whether any screen on the server supports either of the |
||
| 81 | * create-context extensions. |
||
| 82 | */ |
||
| 83 | for (i = 0; i < ScreenCount(glx_dpy->dpy); i++) { |
||
| 84 | struct glx_screen *src = glx_dpy->screens[i]; |
||
| 85 | |||
| 86 | const char *haystack = src->serverGLXexts; |
||
| 87 | while (haystack != NULL) { |
||
| 88 | char *match = strstr(haystack, "GLX_ARB_create_context"); |
||
| 89 | |||
| 90 | if (match == NULL) |
||
| 91 | break; |
||
| 92 | |||
| 93 | match += ext_length; |
||
| 94 | |||
| 95 | switch (match[0]) { |
||
| 96 | case '\0': |
||
| 97 | case ' ': |
||
| 98 | any_screen_has_ARB_create_context = True; |
||
| 99 | break; |
||
| 100 | |||
| 101 | case '_': |
||
| 102 | if (strncmp(match, "_profile", prof_length) == 0 |
||
| 103 | && (match[prof_length] == '\0' |
||
| 104 | || match[prof_length] == ' ')) { |
||
| 105 | any_screen_has_ARB_create_context_profile = True; |
||
| 106 | match += prof_length; |
||
| 107 | } |
||
| 108 | break; |
||
| 109 | } |
||
| 110 | |||
| 111 | haystack = match; |
||
| 112 | } |
||
| 113 | } |
||
| 114 | |||
| 115 | gl_extension_string = __glXGetClientGLExtensionString(); |
||
| 116 | gl_extension_length = strlen(gl_extension_string) + 1; |
||
| 117 | |||
| 118 | c = XGetXCBConnection(glx_dpy->dpy); |
||
| 119 | |||
| 120 | /* Depending on the GLX verion and the available extensions on the server, |
||
| 121 | * send the correct "flavor" of protocol to the server. |
||
| 122 | * |
||
| 123 | * THE ORDER IS IMPORTANT. We want to send the most recent version of the |
||
| 124 | * protocol that the server can support. |
||
| 125 | */ |
||
| 126 | if (glx_dpy->majorVersion == 1 && glx_dpy->minorVersion == 4 |
||
| 127 | && any_screen_has_ARB_create_context_profile) { |
||
| 128 | xcb_glx_set_client_info_2arb(c, |
||
| 129 | GLX_MAJOR_VERSION, GLX_MINOR_VERSION, |
||
| 130 | sizeof(gl_versions_profiles) |
||
| 131 | / (3 * sizeof(gl_versions_profiles[0])), |
||
| 132 | gl_extension_length, |
||
| 133 | strlen(glx_extensions) + 1, |
||
| 134 | gl_versions_profiles, |
||
| 135 | gl_extension_string, |
||
| 136 | glx_extensions); |
||
| 137 | } else if (glx_dpy->majorVersion == 1 && glx_dpy->minorVersion == 4 |
||
| 138 | && any_screen_has_ARB_create_context) { |
||
| 139 | xcb_glx_set_client_info_arb(c, |
||
| 140 | GLX_MAJOR_VERSION, GLX_MINOR_VERSION, |
||
| 141 | sizeof(gl_versions) |
||
| 142 | / (2 * sizeof(gl_versions[0])), |
||
| 143 | gl_extension_length, |
||
| 144 | strlen(glx_extensions) + 1, |
||
| 145 | gl_versions, |
||
| 146 | gl_extension_string, |
||
| 147 | glx_extensions); |
||
| 148 | } else { |
||
| 149 | xcb_glx_client_info(c, |
||
| 150 | GLX_MAJOR_VERSION, GLX_MINOR_VERSION, |
||
| 151 | gl_extension_length, |
||
| 152 | gl_extension_string); |
||
| 153 | } |
||
| 154 | |||
| 155 | free(gl_extension_string); |
||
| 156 | } |