1 files changed, 82 insertions, 0 deletions
diff --git a/src/egl/main/eglglvnd.c b/src/egl/main/eglglvnd.c
new file mode 100644
index 00000000000..6b984ed6c28
--- /dev/null
+++ b/src/egl/main/eglglvnd.c
@@ -0,0 +1,82 @@
+#include <string.h>
+#include <assert.h>
+
+#include <glvnd/libeglabi.h>
+
+#include "eglcurrent.h"
+#include "egldispatchstubs.h"
+#include "eglglobals.h"
+
+static const __EGLapiExports *__eglGLVNDApiExports = NULL;
+
+static const char * EGLAPIENTRY
+__eglGLVNDQueryString(EGLDisplay dpy, EGLenum name)
+{
+   // For client extensions, return the list of non-platform extensions. The
+   // platform extensions are returned by __eglGLVNDGetVendorString.
+   if (dpy == EGL_NO_DISPLAY && name == EGL_EXTENSIONS)
+      return _eglGlobal.ClientOnlyExtensionString;
+
+   // For everything else, forward to the normal eglQueryString function.
+   return eglQueryString(dpy, name);
+}
+
+static const char *
+__eglGLVNDGetVendorString(int name)
+{
+   if (name == __EGL_VENDOR_STRING_PLATFORM_EXTENSIONS) {
+      const char *str = _eglGlobal.PlatformExtensionString;
+      // The platform extension string may have a leading space. If it does,
+      // then skip over it.
+      while (*str == ' ') {
+         str++;
+      }
+      return str;
+   }
+
+   return NULL;
+}
+
+static EGLDisplay
+__eglGLVNDGetPlatformDisplay(EGLenum platform, void *native_display,
+      const EGLAttrib *attrib_list)
+{
+   if (platform == EGL_NONE) {
+      assert(native_display == (void *) EGL_DEFAULT_DISPLAY);
+      assert(attrib_list == NULL);
+      return eglGetDisplay((EGLNativeDisplayType) native_display);
+   } else {
+      return eglGetPlatformDisplay(platform, native_display, attrib_list);
+   }
+}
+
+static void *
+__eglGLVNDGetProcAddress(const char *procName)
+{
+   if (strcmp(procName, "eglQueryString") == 0)
+      return (void *) __eglGLVNDQueryString;
+
+   return (void *) eglGetProcAddress(procName);
+}
+
+EGLAPI EGLBoolean
+__egl_Main(uint32_t version, const __EGLapiExports *exports,
+     __EGLvendorInfo *vendor, __EGLapiImports *imports)
+{
+   if (EGL_VENDOR_ABI_GET_MAJOR_VERSION(version) !=
+       EGL_VENDOR_ABI_MAJOR_VERSION)
+      return EGL_FALSE;
+
+   __eglGLVNDApiExports = exports;
+   __eglInitDispatchStubs(exports);
+
+   imports->getPlatformDisplay = __eglGLVNDGetPlatformDisplay;
+   imports->getSupportsAPI = _eglIsApiValid;
+   imports->getVendorString = __eglGLVNDGetVendorString;
+   imports->getProcAddress = __eglGLVNDGetProcAddress;
+   imports->getDispatchAddress = __eglDispatchFindDispatchFunction;
+   imports->setDispatchIndex = __eglSetDispatchIndex;
+
+   return EGL_TRUE;
+}
+