/* * Experimental OpenGL support code for Build. * *  Written by Ryan C. Gordon. (icculus@clutteredmind.org) * * Please do NOT harrass Ken Silverman about any code modifications *  (including this file) to BUILD. *//* * "Build Engine & Tools" Copyright (c) 1993-1997 Ken Silverman * Ken Silverman's official web site: "http://www.advsys.net/ken" * See the included license file "BUILDLIC.TXT" for license info. * This file IS NOT A PART OF Ken Silverman's original release */#ifndef _INCLUDE_BUILDGL_H_#define _INCLUDE_BUILDGL_H_#if (!defined USE_OPENGL)#error USE_OPENGL is not defined. Do you REALLY want to compile this?#endif#include <GL/gl.h>typedef const GLubyte* (*glGetString_t)(GLenum name);extern glGetString_t dglGetString;typedef void (*glBegin_t)(GLenum mode);extern glBegin_t dglBegin;typedef void (*glEnd_t)(void);extern glEnd_t dglEnd;typedef void (*glClear_t)(GLbitfield mask);extern glClear_t dglClear;typedef void (*glClearColor_t)(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);extern glClearColor_t dglClearColor;typedef void (*glDrawPixels_t)(GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid *pixels);extern glDrawPixels_t dglDrawPixels;typedef void (*glGetPixelMapfv_t)(GLenum map, GLfloat *values);extern glGetPixelMapfv_t dglGetPixelMapfv;typedef void (*glPixelMapfv_t)(GLenum map, GLint mapsize, const GLfloat *values);extern glPixelMapfv_t dglPixelMapfv;typedef void (*glPixelStorei_t)(GLenum pname, GLint param);extern glPixelStorei_t dglPixelStorei;typedef void (*glEnable_t)(GLenum cap);extern glEnable_t dglEnable;typedef void (*glDisable_t)(GLenum cap);extern glDisable_t dglDisable;typedef void (*glViewport_t)(GLint x, GLint y, GLsizei width, GLsizei height);extern glViewport_t dglViewport;typedef void (*glGenTextures_t)(GLsizei n, GLuint *textures);extern glGenTextures_t dglGenTextures;typedef void (*glDeleteTextures_t)(GLsizei n, const GLuint *textures);extern glDeleteTextures_t dglDeleteTextures;typedef void (*glBindTexture_t)(GLenum target, GLuint texture);extern glBindTexture_t dglBindTexture;typedef void (*glTexParameteri_t)(GLenum target, GLenum pname, GLint param);extern glTexParameteri_t dglTexParameteri;typedef void (*glTexImage2D_t)(GLenum target, GLint level,                               GLint internalFormat, GLsizei width,                               GLsizei height, GLint border, GLenum format,                               GLenum type, const GLvoid *pixels);extern glTexImage2D_t dglTexImage2D;typedef void (*glTexCoord2f_t)(GLfloat s, GLfloat t);extern glTexCoord2f_t dglTexCoord2f;typedef void (*glVertex2f_t)(GLfloat x, GLfloat y);extern glVertex2f_t dglVertex2f;typedef void (*glVertex3f_t)(GLfloat x, GLfloat y, GLfloat z);extern glVertex3f_t dglVertex3f;typedef void (*glColor3f_t)(GLfloat red, GLfloat green, GLfloat blue);extern glColor3f_t dglColor3f;typedef GLenum (*glGetError_t)(void);extern glGetError_t dglGetError;typedef void (*glGetIntegerv_t)(GLenum pname, GLint *params);extern glGetIntegerv_t dglGetIntegerv;typedef void (*glClearDepth_t)(GLclampd depth);extern glClearDepth_t dglClearDepth;typedef void (*glDepthFunc_t)(GLenum func);extern glDepthFunc_t dglDepthFunc;typedef void (*glShadeModel_t)(GLenum mode);extern glShadeModel_t dglShadeModel;typedef void (*glMatrixMode_t)(GLenum mode);extern glMatrixMode_t dglMatrixMode;typedef void (*glLoadIdentity_t)(void);extern glLoadIdentity_t dglLoadIdentity;typedef void (*glPixelTransferi_t)(GLenum pname, GLint param);extern glPixelTransferi_t dglPixelTransferi;int opengl_load_library(void);void opengl_gen_2d_textures(int xdim, int ydim);void opengl_build_2d_quads(int x, int y, int w, int h);void opengl_swapbuffers(void);#endif  /* !defined _INCLUDE_BUILDGL_H_ *//* end of buildgl.h ... */