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
37static const __EGLapiExports *__eglGLVNDApiExports = NULL;
38
39static const char * EGLAPIENTRY
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
51static const char *
52__eglGLVNDGetVendorString(int name)
53{
54   if (name == __EGL_VENDOR_STRING_PLATFORM_EXTENSIONS)
55      return _eglGlobal.PlatformExtensionString;
56
57   return NULL;
58}
59
60static EGLDisplay
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
73static void *
74__eglGLVNDGetProcAddress(const char *procName)
75{
76   if (strcmp(procName, "eglQueryString") == 0)
77      return (void *) __eglGLVNDQueryString;
78
79   return (void *) eglGetProcAddress(procName);
80}
81
82EGLAPI EGLBoolean
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