added glad generator and a glad runtime

tools/glad-0.1.14a0/glad/lang/c/loader/egl.py

@@ -0,0 +1,85 @@
+from glad.lang.common.loader import BaseLoader
+
+
+_EGL_LOADER = '''
+int gladLoadEGL(void) {
+    return gladLoadEGLLoader((GLADloadproc)eglGetProcAddress);
+}
+'''
+
+_EGL_HEADER = '''
+#ifndef __glad_egl_h_
+
+#ifdef __egl_h_
+#error EGL header already included, remove this include, glad already provides it
+#endif
+
+#define __glad_egl_h_
+#define __egl_h_
+
+#if defined(_WIN32) && !defined(APIENTRY) && !defined(__CYGWIN__) && !defined(__SCITECH_SNAP__)
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN 1
+#endif
+#include <windows.h>
+#endif
+
+#ifndef APIENTRY
+#define APIENTRY
+#endif
+#ifndef APIENTRYP
+#define APIENTRYP APIENTRY *
+#endif
+#ifndef GLAPI
+#define GLAPI extern
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef void* (* GLADloadproc)(const char *name);
+'''
+
+_EGL_HEADER_LOADER = '''
+GLAPI int gladLoadEGL(void);
+'''
+
+_EGL_HEADER_END = '''
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+'''
+
+_EGL_HAS_EXT = '''
+'''
+
+
+class EGLCLoader(BaseLoader):
+    def write(self, fobj):
+        if not self.disabled:
+            fobj.write(_EGL_LOADER)
+
+    def write_begin_load(self, fobj):
+        # suppress unused warnings
+        fobj.write('\t(void) load;\n')
+
+    def write_end_load(self, fobj):
+        fobj.write('\treturn 1;\n')
+
+    def write_find_core(self, fobj):
+        pass
+
+    def write_has_ext(self, fobj):
+        fobj.write(_EGL_HAS_EXT)
+
+    def write_header(self, fobj):
+        fobj.write(_EGL_HEADER)
+        if not self.disabled:
+            fobj.write(_EGL_HEADER_LOADER)
+
+    def write_header_end(self, fobj):
+        fobj.write(_EGL_HEADER_END)
+