def make_glxx():
enum_ext_text = parse_enumext_spec('specs/enumext.spec', 'GL_')
(gl_spec_header, gl_spec_header_passthru,
gl_spec_source) = parse_spec('specs/gl.spec', 'specs/gl.tm', 'gl')
with open('../glxx.h', 'w') as h_out:
license = open('../_LICENSE.txt')
h_out.write('/*\n')
for ll in license:
h_out.write(' * %s' % ll)
h_out.write(' */\n')
h_out.write('''
#ifndef GL_XX
#define GL_XX
typedef unsigned int GLenum;
typedef unsigned char GLboolean;
typedef unsigned int GLbitfield;
typedef signed char GLbyte;
typedef short GLshort;
typedef int GLint;
typedef int GLsizei;
typedef unsigned char GLubyte;
typedef unsigned short GLushort;
typedef unsigned int GLuint;
typedef float GLfloat;
typedef float GLclampf;
typedef double GLdouble;
typedef double GLclampd;
typedef void GLvoid;
#if defined(_WIN32) || defined(WIN32)
// suppress headers
#if defined(__gl_h__) || defined(__GL_H__)
#error "gl.h is included before glxx.h"
#endif
#define __gl_h__
#define __GL_H__
#ifndef APIENTRY
#define APIENTRY __stdcall
#endif
// handle MemoryBarrier macro
#pragma push_macro("MemoryBarrier")
#undef MemoryBarrier
#endif // _WIN32
// suppress linux header
#ifdef __linux__
#ifdef __gl_h_
#error "gl.h is included before glxx.h"
#endif
#define __gl_h_
#endif // __linux__
#ifndef APIENTRY
#define APIENTRY
#endif
#ifndef APIENTRYP
#define APIENTRYP APIENTRY *
#endif
#ifndef GLAPI
#define GLAPI extern
#endif
''')
h_out.write('\n' + gl_spec_header_passthru + '\n')
h_out.write('\n' + enum_ext_text + '\n')
h_out.write('''
#include <cassert>
namespace glxx
{
void* GetProcAddr(const char* function_name);
bool IsVersionSupported(int minor, int major);
bool IsExtensionSupported(const char* extension);
''')
h_out.write(gl_spec_header + '\n')
h_out.write('''
} //namespace glxx
#if defined(_WIN32) || defined(WIN32)
#undef APIENTRY
#pragma pop_macro("MemoryBarrier")
#endif
#endif // GL_XX
''')
h_out.close()
with open('../glxx.cpp', 'w') as cpp_out:
license = open('../_LICENSE.txt')
cpp_out.write('/*\n')
for ll in license:
cpp_out.write(' * %s' % ll)
cpp_out.write(' */\n')
cpp_out.write('''
#include "glxx.h"
#include <iostream>
#include <iterator>
#include <string>
#include <sstream>
#include <vector>
#include <algorithm>
#include <memory>
#ifdef __linux__
#include <GL/glx.h>
#endif
#if defined(_WIN32) || defined(WIN32)
#define WIN32_LEAN_AND_MEAN 1
#include <windows.h>
#pragma push_macro("MemoryBarrier")
#undef MemoryBarrier
#endif
namespace glxx
{
#ifdef __linux__
GLXContext GetCurrentCtx()
{
return glXGetCurrentContext();
}
void* GetProcAddr(const char* function_name)
{
return (void*)glXGetProcAddress((const GLubyte*)function_name);
}
#endif // __linux__
#if defined(_WIN32) || defined(WIN32)
HGLRC GetCurrentCtx()
{
return wglGetCurrentContext();
}
void* GetProcAddr(const char* function_name)
{
void* p = wglGetProcAddress(function_name);
if (p)
return p;
HMODULE h = LoadLibraryA("opengl32.dll");
return GetProcAddress(h, function_name);
}
#endif // _WIN32
bool IsVersionSupported(int major, int minor)
{
assert(GetCurrentCtx() && "IsVersionSupported called without a current context");
gl_version_1_0::PFNGLGETSTRINGPROC glGetString =
(gl_version_1_0::PFNGLGETSTRINGPROC)GetProcAddr("glGetString");
const char* version = (const char*)glGetString(GL_VERSION);
int ctx_maj = version[0] - 48;
int ctx_min = version[2] - 48;
std::cout << "ctx_ver: " << ctx_maj << "." << ctx_min << std::endl;
if (ctx_maj < major)
return false;
if (ctx_maj == major) {
if (ctx_min < minor)
return false;
}
return true;
}
bool IsExtensionSupported(const char* extension)
{
assert(GetCurrentCtx() && "IsExtensionSupported called without a current context");
gl_version_1_0::PFNGLGETSTRINGPROC glGetString =
(gl_version_1_0::PFNGLGETSTRINGPROC)GetProcAddr("glGetString");
const char* version = (const char*)glGetString(GL_VERSION);
int ctx_major = version[0] - 48;
if (ctx_major >= 3) {
gl_version_3_0::PFNGLGETSTRINGIPROC glGetStringi =
(gl_version_3_0::PFNGLGETSTRINGIPROC)GetProcAddr("glGetStringi");
gl_version_1_0::PFNGLGETINTEGERVPROC glGetIntegerv =
(gl_version_1_0::PFNGLGETINTEGERVPROC)GetProcAddr("glGetIntegerv");
int num_extensions = 0;
glGetIntegerv(GL_NUM_EXTENSIONS, &num_extensions);
for (int i = 0; i < num_extensions; ++i) {
if (std::string((const char*)glGetStringi(GL_EXTENSIONS, i)) == extension)
return true;
}
return false;
} else {
std::string ext_s((const char*)glGetString(GL_EXTENSIONS));
std::istringstream ext_ss(ext_s);
std::vector<std::string> extensions;
std::copy(std::istream_iterator<std::string>(ext_ss),
std::istream_iterator<std::string>(),
std::back_inserter<std::vector<std::string> >(extensions));
if (std::find(extensions.begin(), extensions.end(), extension) == extensions.end())
return false;
return true;
}
}
''')
cpp_out.write(gl_spec_source)
cpp_out.write('''
} // namespace glxx
#if defined(_WIN32) || defined(WIN32)
#pragma pop_macro("MemoryBarrier")
#endif
''')
def make_wglxx():
wgl_enum_ext_text = parse_enumext_spec('specs/wglenumext.spec')
(wgl_spec_header,
wgl_spec_header_passthru,
wgl_spec_source) = parse_spec('specs/wglext.spec', 'specs/wgl.tm', 'wgl')
with open('../wglxx.h', 'w') as h:
license = open('../_LICENSE.txt')
h.write('/*\n')
for ll in license:
h.write(' * %s' % ll)
h.write(' */\n')
h.write('''
#ifndef WGLXX
#define WGLXX
#if defined(_WIN32) || defined(WIN32)
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN 1
#include <windows.h>
#undef WIN32_LEAN_AND_MEAN
#else
#include <windows.h>
#endif
#ifndef APIENTRY
#define APIENTRY
#endif
#ifndef APIENTRYP
#define APIENTRYP APIENTRY *
#endif
#ifndef GLAPI
#define GLAPI extern
#endif
typedef unsigned int GLenum;
typedef unsigned char GLboolean;
typedef unsigned int GLbitfield;
typedef signed char GLbyte;
typedef short GLshort;
typedef int GLint;
typedef int GLsizei;
typedef unsigned char GLubyte;
typedef unsigned short GLushort;
typedef unsigned int GLuint;
typedef float GLfloat;
typedef float GLclampf;
typedef double GLdouble;
typedef double GLclampd;
typedef void GLvoid;
''')
h.write(wgl_enum_ext_text)
h.write(wgl_spec_header_passthru)
h.write('''
namespace wglxx
{''')
h.write(wgl_spec_header)
h.write('''
}
#endif // _WIN32
#endif // WGLXX''')
with open('../wglxx.cpp', 'w') as cpp:
license = open('../_LICENSE.txt')
cpp.write('/*\n')
for ll in license:
cpp.write(' * %s' % ll)
cpp.write(' */\n')
cpp.write('''
#if defined(_WIN32) || defined(WIN32)
#include "wglxx.h"
#include <cassert>
#include <string>
#include <sstream>
#include <vector>
#include <algorithm>
#include <memory>
namespace wglxx
{
HGLRC GetCurrentCtx()
{
return wglGetCurrentContext();
}
void* GetProcAddr(const char* function_name)
{
void* p = wglGetProcAddress(function_name);
if (p)
return p;
HMODULE h = LoadLibraryA("opengl32.dll");
return GetProcAddress(h, function_name);
}
bool IsExtensionSupported(const char* extension)
{
using std::string;
using std::istringstream;
using std::vector;
using std::copy;
using std::find;
using std::istream_iterator;
using std::back_inserter;
assert(GetCurrentCtx() && "wglxx: IsExtensionSupported called without a current context");
wgl_arb_extensions_string::PFNWGLGETEXTENSIONSSTRINGARBPROC wglGetExtensionsStringARB = 0;
wglGetExtensionsStringARB = (wgl_arb_extensions_string::PFNWGLGETEXTENSIONSSTRINGARBPROC)
GetProcAddr("wglGetExtensionsStringARB");
if (!wglGetExtensionsStringARB)
return false;
string ext_s((const char*)wglGetExtensionsStringARB(wglGetCurrentDC()));
istringstream ext_ss(ext_s);
vector<string> extensions;
copy(istream_iterator<string>(ext_ss), istream_iterator<string>(),
back_inserter<vector<string> >(extensions));
if (find(extensions.begin(), extensions.end(), extension) == extensions.end())
return false;
return true;
}
''')
cpp.write(wgl_spec_source)
cpp.write('''
} // namespace wglxx
#endif //_WIN32
''')
def make_glXxx():
xgl_enum_ext = parse_enumext_spec("specs/glxenumext.spec", "GLX_")
(xgl_spec_header, xgl_spec_header_passthru, xgl_spec_source) = parse_spec(
"specs/glxext.spec", "specs/glx.tm", "glX"
)
with open("../glXxx.h", "w") as h:
license = open("../_LICENSE.txt")
h.write("/*\n")
for ll in license:
h.write(" * %s" % ll)
h.write(" */\n")
h.write(
"""
#ifndef GLXXX
#define GLXXX
#ifdef __linux__
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xmd.h>
typedef unsigned int GLenum;
typedef unsigned char GLboolean;
typedef unsigned int GLbitfield;
typedef signed char GLbyte;
typedef short GLshort;
typedef int GLint;
typedef int GLsizei;
typedef unsigned char GLubyte;
typedef unsigned short GLushort;
typedef unsigned int GLuint;
typedef float GLfloat;
typedef float GLclampf;
typedef double GLdouble;
typedef double GLclampd;
typedef void GLvoid;
typedef XID GLXDrawable;
typedef XID GLXFBConfigID;
typedef XID GLXPbuffer;
typedef XID GLXWindow;
typedef XID GLXPixmap;
typedef XID GLXContextID;
typedef struct __GLXFBConfigRec *GLXFBConfig;
typedef struct __GLXcontextRec *GLXContext;
#ifndef APIENTRY
#define APIENTRY
#endif
#ifndef APIENTRYP
#define APIENTRYP APIENTRY *
#endif
#ifndef GLAPI
#define GLAPI extern
#endif
"""
)
h.write(xgl_enum_ext)
h.write(xgl_spec_header_passthru)
h.write(
"""
namespace glXxx
{"""
)
h.write(xgl_spec_header)
h.write(
"""
}
#include <GL/glx.h>
#endif //__linux__
#endif // GLXXX
"""
)
with open("../glXxx.cpp", "w") as cpp:
license = open("../_LICENSE.txt")
cpp.write("/*\n")
for ll in license:
cpp.write(" * %s" % ll)
cpp.write(" */\n")
cpp.write(
"""
#ifdef __linux__
#include "glXxx.h"
#include <GL/glx.h>
#include <cassert>
#include <string>
#include <vector>
#include <sstream>
#include <iterator>
#include <algorithm>
#include <memory>
namespace glXxx
{
GLXContext GetCurrentCtx()
{
return glXGetCurrentContext();
}
void* GetProcAddr(const char* function_name)
{
return (void*)glXGetProcAddress((const GLubyte*)function_name);
}
bool IsExtensionSupported(const char* extension)
{
Display* d = glXGetCurrentDisplay();
assert(d && "Queried GLX extension without a current context");
if (!d)
return false;
int screen;
if (glXQueryContext(d, glXGetCurrentContext(), GLX_SCREEN, &screen) != 0)
return false;
using namespace std;
string ext_s((const char*)glXQueryExtensionsString(d, screen));
istringstream ext_ss(ext_s);
vector<string> extensions;
copy(istream_iterator<string>(ext_ss), istream_iterator<string>(),
back_inserter<vector<string> >(extensions));
if (find(extensions.begin(), extensions.end(), extension) == extensions.end())
return false;
return true;
}
bool IsVersionSupported(int major, int minor)
{
Display* d = glXGetCurrentDisplay();
assert(d && "Queried GLX extension without a current context");
if (!d)
return false;
int maj, min;
if (!glXQueryVersion(d, &maj, &min))
return false;
if (maj > major)
return true;
else if (maj == major && min >= minor)
return true;
return false;
}
"""
)
cpp.write(xgl_spec_source)
cpp.write(
"""
} // namespace glXxx
#endif // __linux__
"""
)