1 files changed, 178 insertions, 0 deletions
diff --git a/misc/scripts/make_glwrapper.py b/misc/scripts/make_glwrapper.py
new file mode 100644
index 0000000000..5694d2327e
--- /dev/null
+++ b/misc/scripts/make_glwrapper.py
@@ -0,0 +1,178 @@
+#! /usr/bin/env python
+import sys
+
+if (len(sys.argv) < 2):
+    print("usage: make_glwrapper.py <headers>")
+    sys.exit(255)
+
+
+functions = []
+types = []
+constants = []
+
+READ_FUNCTIONS = 0
+READ_TYPES = 1
+READ_CONSTANTS = 2
+
+read_what = READ_TYPES
+
+for x in (range(len(sys.argv) - 1)):
+    f = open(sys.argv[x + 1], "r")
+
+    while(True):
+
+        line = f.readline()
+        if (line == ""):
+            break
+
+        line = line.replace("\n", "").strip()
+        """
+    if (line.find("[types]")!=-1):
+      read_what=READ_TYPES
+      continue
+    elif (line.find("[constants]")!=-1):
+      read=READ_TYPES
+      continue
+    elif (line.find("[functions]")!=-1):
+      read_what=READ_FUNCTIONS
+      continue
+     """
+
+        if (line.find("#define") != -1):
+            if (line.find("0x") == -1 and line.find("GL_VERSION") == -1):
+                continue
+            constants.append(line)
+        elif (line.find("typedef") != -1):
+            if (line.find("(") != -1 or line.find(")") != -1 or line.find("ARB") != -1 or line.find("EXT") != -1 or line.find("GL") == -1):
+                continue
+            types.append(line)
+        elif (line.find("APIENTRY") != -1 and line.find("GLAPI") != -1):
+
+            if (line.find("ARB") != -1 or line.find("EXT") != -1 or line.find("NV") != -1):
+                continue
+
+            line = line.replace("APIENTRY", "")
+            line = line.replace("GLAPI", "")
+
+            glpos = line.find(" gl")
+            if (glpos == -1):
+
+                glpos = line.find("\tgl")
+                if (glpos == -1):
+                    continue
+
+            ret = line[:glpos].strip()
+
+            line = line[glpos:].strip()
+            namepos = line.find("(")
+
+            if (namepos == -1):
+                continue
+
+            name = line[:namepos].strip()
+            line = line[namepos:]
+
+            argpos = line.rfind(")")
+            if (argpos == -1):
+                continue
+
+            args = line[1:argpos]
+
+            funcdata = {}
+            funcdata["ret"] = ret
+            funcdata["name"] = name
+            funcdata["args"] = args
+
+            functions.append(funcdata)
+            print(funcdata)
+
+
+# print(types)
+# print(constants)
+# print(functions)
+
+
+f = open("glwrapper.h", "w")
+
+f.write("#ifndef GL_WRAPPER\n")
+f.write("#define GL_WRAPPER\n\n\n")
+
+header_code = """\
+#if defined(__gl_h_) || defined(__GL_H__)
+#error gl.h included before glwrapper.h
+#endif
+#if defined(__glext_h_) || defined(__GLEXT_H_)
+#error glext.h included before glwrapper.h
+#endif
+#if defined(__gl_ATI_h_)
+#error glATI.h included before glwrapper.h
+#endif
+
+#define __gl_h_
+#define __GL_H__
+#define __glext_h_
+#define __GLEXT_H_
+#define __gl_ATI_h_
+
+#define GL_TRUE 1
+#define GL_FALSE 0
+
+#define GL_ZERO                           0
+#define GL_ONE                            1
+#define GL_NONE                           0
+#define GL_NO_ERROR                       0
+
+\n\n
+"""
+
+f.write("#include <stddef.h>\n\n\n")
+
+f.write(header_code)
+
+f.write("#ifdef __cplusplus\nextern \"C\" {\n#endif\n\n\n")
+f.write("#if defined(_WIN32) && !defined(__CYGWIN__)\n")
+f.write("#define GLWRP_APIENTRY __stdcall\n")
+f.write("#else\n")
+f.write("#define GLWRP_APIENTRY \n")
+f.write("#endif\n\n")
+for x in types:
+    f.write(x + "\n")
+
+f.write("\n\n")
+
+for x in constants:
+    f.write(x + "\n")
+
+f.write("\n\n")
+
+for x in functions:
+    f.write("extern " + x["ret"] + " GLWRP_APIENTRY (*__wrapper_" + x["name"] + ")(" + x["args"] + ");\n")
+    f.write("#define " + x["name"] + " __wrapper_" + x["name"] + "\n")
+
+f.write("\n\n")
+f.write("typedef void (*GLWrapperFuncPtr)(void);\n\n")
+f.write("void glWrapperInit( GLWrapperFuncPtr (*wrapperFunc)(const char*) );\n")
+
+f.write("#ifdef __cplusplus\n}\n#endif\n")
+
+f.write("#endif\n\n")
+
+f = open("glwrapper.c", "w")
+
+f.write("\n\n")
+f.write("#include \"glwrapper.h\"\n")
+f.write("\n\n")
+
+for x in functions:
+    f.write(x["ret"] + " GLWRP_APIENTRY (*__wrapper_" + x["name"] + ")(" + x["args"] + ")=NULL;\n")
+
+f.write("\n\n")
+f.write("void glWrapperInit( GLWrapperFuncPtr (*wrapperFunc)(const char*) )  {\n")
+f.write("\n")
+
+for x in functions:
+    f.write("\t__wrapper_" + x["name"] + "=(" + x["ret"] + " GLWRP_APIENTRY (*)(" + x["args"] + "))wrapperFunc(\"" + x["name"] + "\");\n")
+
+f.write("\n\n")
+f.write("}\n")
+f.write("\n\n")