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https://git.do.srb2.org/STJr/SRB2.git
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132 lines
4.1 KiB
C
132 lines
4.1 KiB
C
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// Emacs style mode select -*- C++ -*-
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//-----------------------------------------------------------------------------
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//
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// Copyright (C) 1998-2000 by DooM Legacy Team.
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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//-----------------------------------------------------------------------------
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/// \file
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/// \brief OpenGL API for Doom Legacy
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#ifndef _R_OPENGL_H_
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#define _R_OPENGL_H_
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#ifdef SDL
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#ifdef _MSC_VER
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#pragma warning(disable : 4214 4244)
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#endif
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#include "SDL_opengl.h" //Alam_GBC: Simple, yes?
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#ifdef _MSC_VER
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#pragma warning(default : 4214 4244)
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#endif
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#else
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#include <GL/gl.h>
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#include <GL/glu.h>
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#endif
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#define _CREATE_DLL_ // necessary for Unix AND Windows
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#include "../../doomdef.h"
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#include "../hw_drv.h"
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// ==========================================================================
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// DEFINITIONS
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// ==========================================================================
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#define MIN(x,y) (((x)<(y)) ? (x) : (y))
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#define MAX(x,y) (((x)>(y)) ? (x) : (y))
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#undef DEBUG_TO_FILE // maybe defined in previous *.h
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#define DEBUG_TO_FILE // output debugging msgs to ogllog.txt
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#if defined ( SDL ) && !defined ( LOGMESSAGES )
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#undef DEBUG_TO_FILE
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#endif
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#ifndef DRIVER_STRING
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// #define USE_PALETTED_TEXTURE
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#define DRIVER_STRING "HWRAPI Init(): SRB2 OpenGL renderer" // Tails
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#endif
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// ==========================================================================
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// PROTOS
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// ==========================================================================
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boolean LoadGL(void);
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void *GetGLFunc(const char *proc);
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boolean SetupGLfunc(void);
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void Flush(void);
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INT32 isExtAvailable(const char *extension, const GLubyte *start);
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boolean SetupPixelFormat(INT32 WantColorBits, INT32 WantStencilBits, INT32 WantDepthBits);
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void SetModelView(GLint w, GLint h);
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void SetStates(void);
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FUNCMATH float byteasfloat(UINT8 fbyte);
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#ifdef USE_PALETTED_TEXTURE
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extern PFNGLCOLORTABLEEXTPROC glColorTableEXT;
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extern GLubyte palette_tex[256*3];
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#endif
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#ifndef GL_EXT_texture_filter_anisotropic
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#define GL_TEXTURE_MAX_ANISOTROPY_EXT 0x84FE
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#define GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT 0x84FF
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#endif
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#ifdef USE_WGL_SWAP
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typedef BOOL (APIENTRY *PFNWGLEXTSWAPCONTROLPROC) (int);
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typedef int (APIENTRY *PFNWGLEXTGETSWAPINTERVALPROC) (void);
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extern PFNWGLEXTSWAPCONTROLPROC wglSwapIntervalEXT;
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extern PFNWGLEXTGETSWAPINTERVALPROC wglGetSwapIntervalEXT;
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#endif
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#ifdef STATIC_OPENGL
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#define pglClear glClear
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#define pglGetIntegerv glGetIntegerv
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#define pglGetString glGetString
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#else
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/* 1.0 Miscellaneous functions */
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typedef void (APIENTRY * PFNglClear) (GLbitfield mask);
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extern PFNglClear pglClear;
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typedef void (APIENTRY * PFNglGetIntegerv) (GLenum pname, GLint *params);
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extern PFNglGetIntegerv pglGetIntegerv;
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typedef const GLubyte* (APIENTRY * PFNglGetString) (GLenum name);
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extern PFNglGetString pglGetString;
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#endif
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// ==========================================================================
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// GLOBAL
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// ==========================================================================
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extern const GLubyte *gl_extensions;
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extern RGBA_t myPaletteData[];
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#ifndef SDL
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extern FILE *logstream;
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#endif
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extern GLint screen_width;
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extern GLint screen_height;
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extern GLbyte screen_depth;
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extern GLint maximumAnisotropy;
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/** \brief OpenGL flags for video driver
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*/
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extern INT32 oglflags;
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extern GLint textureformatGL;
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typedef enum
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{
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GLF_NOZBUFREAD = 0x01,
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GLF_NOTEXENV = 0x02,
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} oglflags_t;
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#endif
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