/* scivi - visualization plugin for XMMS
 * Copyright (C) 2003 Vitaly V. Bursov <vitalyb@mail333.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef GLSTUFF_H
#define GLSTUFF_H

#include <X11/X.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>

#include <GL/gl.h>
#include <GL/glx.h>

extern int scivi_gl_has_GL_ARB_imaging;
extern int scivi_gl_has_GL_SGIS_generate_mipmap;

#define GL_HAS(e) (scivi_gl_has_##e)

int scivi_check_gl_extensions();
int scivi_initialize_gl_funcs(const char *libglso);
void scivi_finalize_gl_funcs();

/* GL functions */

void (*sc_glMatrixMode)(GLenum mode);
void (*sc_glLoadIdentity)();
void (*sc_glOrtho)( GLdouble left,GLdouble right, GLdouble bottom,
		GLdouble top, GLdouble near_val, GLdouble far_val);
void (*sc_glPushMatrix)();
void (*sc_glPopMatrix)();

void (*sc_glLightModelfv)(GLenum pname, const GLfloat *params);
void (*sc_glTexEnvi)(GLenum target, GLenum pname, GLint param);
void (*sc_glBlendFunc)(GLenum sfactor, GLenum dfactor);
void (*sc_glViewport)(GLint x, GLint y, GLsizei width, GLsizei height);
void (*sc_glClearColor)(GLclampf red, GLclampf green, GLclampf blue,
		GLclampf alpha);

void (*sc_glTexParameteri)(GLenum target, GLenum pname, GLint param);

void (*sc_glScalef)(GLfloat x, GLfloat y, GLfloat z);
void (*sc_glRotatef)(GLfloat angle, GLfloat x, GLfloat y, GLfloat z);
void (*sc_glTranslatef)(GLfloat x, GLfloat y, GLfloat z);

void (*sc_glLineWidth)(GLfloat width);
void (*sc_glPointSize)(GLfloat size);

void (*sc_glBegin)(GLenum mode);
void (*sc_glTexCoord2f)(GLfloat s, GLfloat t);
void (*sc_glMaterialfv)(GLenum face, GLenum pname, const GLfloat *params);
void (*sc_glVertex2f)(GLfloat x, GLfloat y);
void (*sc_glEnd)();


void (*sc_glPushAttrib)(GLbitfield mask);
void (*sc_glPopAttrib)();

void (*sc_glNewList)(GLuint list, GLenum mode);
void (*sc_glCallList)(GLuint list);
void (*sc_glEndList)();

void (*sc_glBindTexture)(GLenum target, GLuint texture);
void (*sc_glEnable)(GLenum cap);
void (*sc_glDisable)(GLenum cap);
void (*sc_glBlendEquation)(GLenum mode);

void (*sc_glClear)(GLbitfield mask);
void (*sc_glCopyTexImage2D)(GLenum target, GLint level, GLenum internalformat,
		GLint x, GLint y, GLsizei width, GLsizei height, GLint border);

void (*sc_glDeleteTextures)(GLsizei n, const GLuint *textures);
void (*sc_glGenTextures)(GLsizei n, GLuint *textures);

GLuint (*sc_glGenLists)( GLsizei range );
void (*sc_glDeleteLists)(GLuint list, GLsizei range);

void (*sc_glFlush)();

const GLubyte* (*sc_glGetString)(GLenum name);
GLenum (*sc_glGetError)(void);


/* GLX functions */
GLXFBConfig * (*sc_glXGetFBConfigs) (Display *dpy, int screen, int *nelements);
GLXFBConfig * (*sc_glXChooseFBConfig) (Display *dpy, int screen, const int *attrib_list, int *nelements);
int (*sc_glXGetFBConfigAttrib) (Display *dpy, GLXFBConfig config, int attribute, int *value);
XVisualInfo * (*sc_glXGetVisualFromFBConfig) (Display *dpy, GLXFBConfig config);
GLXWindow (*sc_glXCreateWindow) (Display *dpy, GLXFBConfig config, Window win, const int *attrib_list);
void (*sc_glXDestroyWindow) (Display *dpy, GLXWindow win);
GLXPixmap (*sc_glXCreatePixmap) (Display *dpy, GLXFBConfig config, Pixmap pixmap, const int *attrib_list);
void (*sc_glXDestroyPixmap) (Display *dpy, GLXPixmap pixmap);
GLXPbuffer (*sc_glXCreatePbuffer) (Display *dpy, GLXFBConfig config, const int *attrib_list);
void (*sc_glXDestroyPbuffer) (Display *dpy, GLXPbuffer pbuf);
void (*sc_glXQueryDrawable) (Display *dpy, GLXDrawable draw, int attribute, unsigned int *value);
GLXContext (*sc_glXCreateNewContext) (Display *dpy, GLXFBConfig config, int render_type, GLXContext share_list, Bool direct);
Bool (*sc_glXMakeContextCurrent) (Display *display, GLXDrawable draw, GLXDrawable read, GLXContext ctx);
GLXDrawable (*sc_glXGetCurrentReadDrawable) (void);
Display * (*sc_glXGetCurrentDisplay) (void);
int (*sc_glXQueryContext) (Display *dpy, GLXContext ctx, int attribute, int *value);
void (*sc_glXSelectEvent) (Display *dpy, GLXDrawable draw, unsigned long event_mask);
void (*sc_glXGetSelectedEvent) (Display *dpy, GLXDrawable draw, unsigned long *event_mask);

void (*(*sc_glXGetProcAddress)(const GLubyte *procname))(void);

void (*sc_glXSwapBuffers)(Display *dpy, GLXDrawable drawable);
XVisualInfo* (*sc_glXChooseVisual)(Display *dpy, int screen, int *attribList);
GLXContext (*sc_glXCreateContext)(Display *dpy, XVisualInfo *vis,
		GLXContext shareList, Bool direct);
Bool (*sc_glXMakeCurrent)(Display *dpy, GLXDrawable drawable, GLXContext ctx);
Bool (*sc_glXQueryExtension)(Display *dpy, int *errorBase, int *eventBase);
Bool (*sc_glXQueryVersion)(Display *dpy, int *major, int *minor);
void (*sc_glXDestroyContext)(Display *dpy, GLXContext ctx);

int (*sc_glXGetVideoSyncSGI)(unsigned int *);
int (*sc_glXWaitVideoSyncSGI)(int, int, unsigned int *);

Bool (*sc_glXIsDirect)(Display *dpy, GLXContext ctx);
GLXPixmap (*sc_glXCreateGLXPixmap)(Display *dpy, XVisualInfo *vis, Pixmap pixmap);

#endif /* GLSTUFF_H */