+#ifndef GL_SCISSOR_TEST
+#define GL_SCISSOR_TEST 0x0C11
+#define GL_SCISSOR_BOX 0x0C10
+#endif
+
+extern void (GLAPIENTRY *qglScissor)(GLint x, GLint y, GLsizei width, GLsizei height);
+
+extern void (GLAPIENTRY *qglClearColor)(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
+
+extern void (GLAPIENTRY *qglClear)(GLbitfield mask);
+
+//extern void (GLAPIENTRY *qglAlphaFunc)(GLenum func, GLclampf ref);
+extern void (GLAPIENTRY *qglBlendFunc)(GLenum sfactor, GLenum dfactor);
+extern void (GLAPIENTRY *qglCullFace)(GLenum mode);
+
+extern void (GLAPIENTRY *qglDrawBuffer)(GLenum mode);
+extern void (GLAPIENTRY *qglReadBuffer)(GLenum mode);
+extern void (GLAPIENTRY *qglEnable)(GLenum cap);
+extern void (GLAPIENTRY *qglDisable)(GLenum cap);
+//extern GLboolean GLAPIENTRY *qglIsEnabled)(GLenum cap);
+
+extern void (GLAPIENTRY *qglEnableClientState)(GLenum cap);
+extern void (GLAPIENTRY *qglDisableClientState)(GLenum cap);
+
+extern void (GLAPIENTRY *qglGetBooleanv)(GLenum pname, GLboolean *params);
+extern void (GLAPIENTRY *qglGetDoublev)(GLenum pname, GLdouble *params);
+extern void (GLAPIENTRY *qglGetFloatv)(GLenum pname, GLfloat *params);
+extern void (GLAPIENTRY *qglGetIntegerv)(GLenum pname, GLint *params);
+
+extern GLenum (GLAPIENTRY *qglGetError)(void);
+extern const GLubyte* (GLAPIENTRY *qglGetString)(GLenum name);
+extern void (GLAPIENTRY *qglFinish)(void);
+extern void (GLAPIENTRY *qglFlush)(void);
+
+extern void (GLAPIENTRY *qglClearDepth)(GLclampd depth);
+extern void (GLAPIENTRY *qglDepthFunc)(GLenum func);
+extern void (GLAPIENTRY *qglDepthMask)(GLboolean flag);
+extern void (GLAPIENTRY *qglDepthRange)(GLclampd near_val, GLclampd far_val);
+extern void (GLAPIENTRY *qglColorMask)(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);
+
+extern void (GLAPIENTRY *qglDrawRangeElements)(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const GLvoid *indices);
+extern void (GLAPIENTRY *qglDrawElements)(GLenum mode, GLsizei count, GLenum type, const GLvoid *indices);
+extern void (GLAPIENTRY *qglVertexPointer)(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr);
+//extern void (GLAPIENTRY *qglNormalPointer)(GLenum type, GLsizei stride, const GLvoid *ptr);
+extern void (GLAPIENTRY *qglColorPointer)(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr);
+extern void (GLAPIENTRY *qglTexCoordPointer)(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr);
+extern void (GLAPIENTRY *qglArrayElement)(GLint i);
+
+extern void (GLAPIENTRY *qglColor4f)(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
+extern void (GLAPIENTRY *qglTexCoord2f)(GLfloat s, GLfloat t);
+extern void (GLAPIENTRY *qglVertex2f)(GLfloat x, GLfloat y);
+extern void (GLAPIENTRY *qglVertex3f)(GLfloat x, GLfloat y, GLfloat z);
+extern void (GLAPIENTRY *qglBegin)(GLenum mode);
+extern void (GLAPIENTRY *qglEnd)(void);
+
+extern void (GLAPIENTRY *qglMatrixMode)(GLenum mode);
+extern void (GLAPIENTRY *qglOrtho)(GLdouble left, GLdouble right, GLdouble bottom, GLdouble top, GLdouble near_val, GLdouble far_val);
+extern void (GLAPIENTRY *qglFrustum)(GLdouble left, GLdouble right, GLdouble bottom, GLdouble top, GLdouble near_val, GLdouble far_val);
+extern void (GLAPIENTRY *qglViewport)(GLint x, GLint y, GLsizei width, GLsizei height);
+//extern void (GLAPIENTRY *qglPushMatrix)(void);
+//extern void (GLAPIENTRY *qglPopMatrix)(void);
+extern void (GLAPIENTRY *qglLoadIdentity)(void);
+extern void (GLAPIENTRY *qglLoadMatrixd)(const GLdouble *m);
+extern void (GLAPIENTRY *qglLoadMatrixf)(const GLfloat *m);
+//extern void (GLAPIENTRY *qglMultMatrixd)(const GLdouble *m);
+//extern void (GLAPIENTRY *qglMultMatrixf)(const GLfloat *m);
+//extern void (GLAPIENTRY *qglRotated)(GLdouble angle, GLdouble x, GLdouble y, GLdouble z);
+extern void (GLAPIENTRY *qglRotatef)(GLfloat angle, GLfloat x, GLfloat y, GLfloat z);
+//extern void (GLAPIENTRY *qglScaled)(GLdouble x, GLdouble y, GLdouble z);
+//extern void (GLAPIENTRY *qglScalef)(GLfloat x, GLfloat y, GLfloat z);
+//extern void (GLAPIENTRY *qglTranslated)(GLdouble x, GLdouble y, GLdouble z);
+extern void (GLAPIENTRY *qglTranslatef)(GLfloat x, GLfloat y, GLfloat z);
+
+extern void (GLAPIENTRY *qglReadPixels)(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid *pixels);
+
+extern void (GLAPIENTRY *qglStencilFunc)(GLenum func, GLint ref, GLuint mask);
+extern void (GLAPIENTRY *qglStencilMask)(GLuint mask);
+extern void (GLAPIENTRY *qglStencilOp)(GLenum fail, GLenum zfail, GLenum zpass);
+extern void (GLAPIENTRY *qglClearStencil)(GLint s);
+
+extern void (GLAPIENTRY *qglTexEnvf)(GLenum target, GLenum pname, GLfloat param);
+extern void (GLAPIENTRY *qglTexEnvi)(GLenum target, GLenum pname, GLint param);
+extern void (GLAPIENTRY *qglTexParameterf)(GLenum target, GLenum pname, GLfloat param);
+extern void (GLAPIENTRY *qglTexParameterfv)(GLenum target, GLenum pname, GLfloat *params);
+extern void (GLAPIENTRY *qglTexParameteri)(GLenum target, GLenum pname, GLint param);
+
+extern void (GLAPIENTRY *qglGenTextures)(GLsizei n, GLuint *textures);
+extern void (GLAPIENTRY *qglDeleteTextures)(GLsizei n, const GLuint *textures);
+extern void (GLAPIENTRY *qglBindTexture)(GLenum target, GLuint texture);
+extern void (GLAPIENTRY *qglPrioritizeTextures)(GLsizei n, const GLuint *textures, const GLclampf *priorities);
+extern GLboolean (GLAPIENTRY *qglAreTexturesResident)(GLsizei n, const GLuint *textures, GLboolean *residences);
+extern GLboolean (GLAPIENTRY *qglIsTexture)(GLuint texture);
+extern void (GLAPIENTRY *qglPixelStoref)(GLenum pname, GLfloat param);
+extern void (GLAPIENTRY *qglPixelStorei)(GLenum pname, GLint param);
+
+extern void (GLAPIENTRY *qglTexImage1D)(GLenum target, GLint level, GLint internalFormat, GLsizei width, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
+extern void (GLAPIENTRY *qglTexImage2D)(GLenum target, GLint level, GLint internalFormat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
+extern void (GLAPIENTRY *qglTexSubImage1D)(GLenum target, GLint level, GLint xoffset, GLsizei width, GLenum format, GLenum type, const GLvoid *pixels);
+extern void (GLAPIENTRY *qglTexSubImage2D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid *pixels);
+extern void (GLAPIENTRY *qglCopyTexImage1D)(GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLint border);
+extern void (GLAPIENTRY *qglCopyTexImage2D)(GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLsizei height, GLint border);
+extern void (GLAPIENTRY *qglCopyTexSubImage1D)(GLenum target, GLint level, GLint xoffset, GLint x, GLint y, GLsizei width);
+extern void (GLAPIENTRY *qglCopyTexSubImage2D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height);
+
+extern void (GLAPIENTRY *qglPolygonOffset)(GLfloat factor, GLfloat units);
+
+#if WIN32
+extern int (WINAPI *qwglChoosePixelFormat)(HDC, CONST PIXELFORMATDESCRIPTOR *);
+extern int (WINAPI *qwglDescribePixelFormat)(HDC, int, UINT, LPPIXELFORMATDESCRIPTOR);
+//extern int (WINAPI *qwglGetPixelFormat)(HDC);
+extern BOOL (WINAPI *qwglSetPixelFormat)(HDC, int, CONST PIXELFORMATDESCRIPTOR *);
+extern BOOL (WINAPI *qwglSwapBuffers)(HDC);
+extern HGLRC (WINAPI *qwglCreateContext)(HDC);
+extern BOOL (WINAPI *qwglDeleteContext)(HGLRC);
+extern PROC (WINAPI *qwglGetProcAddress)(LPCSTR);
+extern BOOL (WINAPI *qwglMakeCurrent)(HDC, HGLRC);
+extern BOOL (WINAPI *qwglSwapIntervalEXT)(int interval);
+#endif