1 /*
2 * (C) Copyright 2016, NVIDIA CORPORATION.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * on the rights to use, copy, modify, merge, publish, distribute, sub
9 * license, and/or sell copies of the Software, and to permit persons to whom
10 * the Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
19 * IBM AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
22 * IN THE SOFTWARE.
23 *
24 * Authors:
25 * Kyle Brenneman <kbrenneman@nvidia.com>
26 */
27
28 #include <string.h>
29 #include <assert.h>
30
31 #include <glvnd/libeglabi.h>
32
33 #include "eglcurrent.h"
34 #include "egldispatchstubs.h"
35 #include "eglglobals.h"
36
37 static const __EGLapiExports *__eglGLVNDApiExports = NULL;
38
39 static const char * EGLAPIENTRY
__eglGLVNDQueryString(EGLDisplay dpy,EGLenum name)40 __eglGLVNDQueryString(EGLDisplay dpy, EGLenum name)
41 {
42 // For client extensions, return the list of non-platform extensions. The
43 // platform extensions are returned by __eglGLVNDGetVendorString.
44 if (dpy == EGL_NO_DISPLAY && name == EGL_EXTENSIONS)
45 return _eglGlobal.ClientOnlyExtensionString;
46
47 // For everything else, forward to the normal eglQueryString function.
48 return eglQueryString(dpy, name);
49 }
50
51 static const char *
__eglGLVNDGetVendorString(int name)52 __eglGLVNDGetVendorString(int name)
53 {
54 if (name == __EGL_VENDOR_STRING_PLATFORM_EXTENSIONS)
55 return _eglGlobal.PlatformExtensionString;
56
57 return NULL;
58 }
59
60 static EGLDisplay
__eglGLVNDGetPlatformDisplay(EGLenum platform,void * native_display,const EGLAttrib * attrib_list)61 __eglGLVNDGetPlatformDisplay(EGLenum platform, void *native_display,
62 const EGLAttrib *attrib_list)
63 {
64 if (platform == EGL_NONE) {
65 assert(native_display == (void *) EGL_DEFAULT_DISPLAY);
66 assert(attrib_list == NULL);
67 return eglGetDisplay((EGLNativeDisplayType) native_display);
68 } else {
69 return eglGetPlatformDisplay(platform, native_display, attrib_list);
70 }
71 }
72
73 static void *
__eglGLVNDGetProcAddress(const char * procName)74 __eglGLVNDGetProcAddress(const char *procName)
75 {
76 if (strcmp(procName, "eglQueryString") == 0)
77 return (void *) __eglGLVNDQueryString;
78
79 return (void *) eglGetProcAddress(procName);
80 }
81
82 EGLAPI EGLBoolean
__egl_Main(uint32_t version,const __EGLapiExports * exports,__EGLvendorInfo * vendor,__EGLapiImports * imports)83 __egl_Main(uint32_t version, const __EGLapiExports *exports,
84 __EGLvendorInfo *vendor, __EGLapiImports *imports)
85 {
86 if (EGL_VENDOR_ABI_GET_MAJOR_VERSION(version) !=
87 EGL_VENDOR_ABI_MAJOR_VERSION)
88 return EGL_FALSE;
89
90 __eglGLVNDApiExports = exports;
91 __eglInitDispatchStubs(exports);
92
93 imports->getPlatformDisplay = __eglGLVNDGetPlatformDisplay;
94 imports->getSupportsAPI = _eglIsApiValid;
95 imports->getVendorString = __eglGLVNDGetVendorString;
96 imports->getProcAddress = __eglGLVNDGetProcAddress;
97 imports->getDispatchAddress = __eglDispatchFindDispatchFunction;
98 imports->setDispatchIndex = __eglSetDispatchIndex;
99
100 return EGL_TRUE;
101 }
102
103