glquake.h revision 9fd67c44777b350dc56f3e70c88963b0d966ffc7 
1/*
2Copyright (C) 1996-1997 Id Software, Inc.
3
4This program is free software; you can redistribute it and/or
5modify it under the terms of the GNU General Public License
6as published by the Free Software Foundation; either version 2
7of the License, or (at your option) any later version.
8
9This program is distributed in the hope that it will be useful,
10but WITHOUT ANY WARRANTY; without even the implied warranty of
11MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12
13See the GNU General Public License for more details.
14
15You should have received a copy of the GNU General Public License
16along with this program; if not, write to the Free Software
17Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
18
19*/
20// disable data conversion warnings
21
22#pragma warning(disable : 4244)     // MIPS
23#pragma warning(disable : 4136)     // X86
24#pragma warning(disable : 4051)     // ALPHA
25
26#ifdef _WIN32
27#include <windows.h>
28#endif
29
30#include <GL/gl.h>
31#include <GL/glu.h>
32
33void GL_BeginRendering (int *x, int *y, int *width, int *height);
34void GL_EndRendering (void);
35
36
37#ifdef _WIN32
38// Function prototypes for the Texture Object Extension routines
39typedef GLboolean (APIENTRY *ARETEXRESFUNCPTR)(GLsizei, const GLuint *,
40                    const GLboolean *);
41typedef void (APIENTRY *BINDTEXFUNCPTR)(GLenum, GLuint);
42typedef void (APIENTRY *DELTEXFUNCPTR)(GLsizei, const GLuint *);
43typedef void (APIENTRY *GENTEXFUNCPTR)(GLsizei, GLuint *);
44typedef GLboolean (APIENTRY *ISTEXFUNCPTR)(GLuint);
45typedef void (APIENTRY *PRIORTEXFUNCPTR)(GLsizei, const GLuint *,
46                    const GLclampf *);
47typedef void (APIENTRY *TEXSUBIMAGEPTR)(int, int, int, int, int, int, int, int, void *);
48
49extern	BINDTEXFUNCPTR bindTexFunc;
50extern	DELTEXFUNCPTR delTexFunc;
51extern	TEXSUBIMAGEPTR TexSubImage2DFunc;
52#endif
53
54extern	int texture_extension_number;
55extern	int		texture_mode;
56
57extern	float	gldepthmin, gldepthmax;
58
59void GL_Upload32 (unsigned *data, int width, int height,  qboolean mipmap, qboolean alpha);
60void GL_Upload8 (byte *data, int width, int height,  qboolean mipmap, qboolean alpha);
61int GL_LoadTexture (char *identifier, int width, int height, byte *data, qboolean mipmap, qboolean alpha);
62int GL_FindTexture (char *identifier);
63
64typedef struct
65{
66	float	x, y, z;
67	float	s, t;
68	float	r, g, b;
69} glvert_t;
70
71extern glvert_t glv;
72
73extern	int glx, gly, glwidth, glheight;
74
75#ifdef _WIN32
76extern	PROC glArrayElementEXT;
77extern	PROC glColorPointerEXT;
78extern	PROC glTexturePointerEXT;
79extern	PROC glVertexPointerEXT;
80#endif
81
82// r_local.h -- private refresh defs
83
84#define ALIAS_BASE_SIZE_RATIO		(1.0 / 11.0)
85					// normalizing factor so player model works out to about
86					//  1 pixel per triangle
87#define	MAX_LBM_HEIGHT		480
88
89#define TILE_SIZE		128		// size of textures generated by R_GenTiledSurf
90
91#define SKYSHIFT		7
92#define	SKYSIZE			(1 << SKYSHIFT)
93#define SKYMASK			(SKYSIZE - 1)
94
95#define BACKFACE_EPSILON	0.01
96
97
98void R_TimeRefresh_f (void);
99void R_ReadPointFile_f (void);
100texture_t *R_TextureAnimation (texture_t *base);
101
102typedef struct surfcache_s
103{
104	struct surfcache_s	*next;
105	struct surfcache_s 	**owner;		// NULL is an empty chunk of memory
106	int					lightadj[MAXLIGHTMAPS]; // checked for strobe flush
107	int					dlight;
108	int					size;		// including header
109	unsigned			width;
110	unsigned			height;		// DEBUG only needed for debug
111	float				mipscale;
112	struct texture_s	*texture;	// checked for animating textures
113	byte				data[4];	// width*height elements
114} surfcache_t;
115
116
117typedef struct
118{
119	pixel_t		*surfdat;	// destination for generated surface
120	int			rowbytes;	// destination logical width in bytes
121	msurface_t	*surf;		// description for surface to generate
122	fixed8_t	lightadj[MAXLIGHTMAPS];
123							// adjust for lightmap levels for dynamic lighting
124	texture_t	*texture;	// corrected for animating textures
125	int			surfmip;	// mipmapped ratio of surface texels / world pixels
126	int			surfwidth;	// in mipmapped texels
127	int			surfheight;	// in mipmapped texels
128} drawsurf_t;
129
130
131typedef enum {
132	pt_static, pt_grav, pt_slowgrav, pt_fire, pt_explode, pt_explode2, pt_blob, pt_blob2
133} ptype_t;
134
135// !!! if this is changed, it must be changed in d_ifacea.h too !!!
136typedef struct particle_s
137{
138// driver-usable fields
139	vec3_t		org;
140	float		color;
141// drivers never touch the following fields
142	struct particle_s	*next;
143	vec3_t		vel;
144	float		ramp;
145	float		die;
146	ptype_t		type;
147} particle_t;
148
149
150//====================================================
151
152
153extern	entity_t	r_worldentity;
154extern	qboolean	r_cache_thrash;		// compatability
155extern	vec3_t		modelorg, r_entorigin;
156extern	entity_t	*currententity;
157extern	int			r_visframecount;	// ??? what difs?
158extern	int			r_framecount;
159extern	mplane_t	frustum[4];
160extern	int		c_brush_polys, c_alias_polys;
161
162
163//
164// view origin
165//
166extern	vec3_t	vup;
167extern	vec3_t	vpn;
168extern	vec3_t	vright;
169extern	vec3_t	r_origin;
170
171//
172// screen size info
173//
174extern	refdef_t	r_refdef;
175extern	mleaf_t		*r_viewleaf, *r_oldviewleaf;
176extern	texture_t	*r_notexture_mip;
177extern	int		d_lightstylevalue[256];	// 8.8 fraction of base light value
178
179extern	qboolean	envmap;
180extern	int	currenttexture;
181extern	int	cnttextures[2];
182extern	int	particletexture;
183extern	int	playertextures;
184
185extern	int	skytexturenum;		// index in cl.loadmodel, not gl texture object
186
187extern	cvar_t	r_norefresh;
188extern	cvar_t	r_drawentities;
189extern	cvar_t	r_drawworld;
190extern	cvar_t	r_drawviewmodel;
191extern	cvar_t	r_speeds;
192extern	cvar_t	r_waterwarp;
193extern	cvar_t	r_fullbright;
194extern	cvar_t	r_lightmap;
195extern	cvar_t	r_shadows;
196extern	cvar_t	r_mirroralpha;
197extern	cvar_t	r_wateralpha;
198extern	cvar_t	r_dynamic;
199extern	cvar_t	r_novis;
200
201extern	cvar_t	gl_clear;
202extern	cvar_t	gl_cull;
203extern	cvar_t	gl_poly;
204extern	cvar_t	gl_texsort;
205extern	cvar_t	gl_smoothmodels;
206extern	cvar_t	gl_affinemodels;
207extern	cvar_t	gl_polyblend;
208extern	cvar_t	gl_keeptjunctions;
209extern	cvar_t	gl_reporttjunctions;
210extern	cvar_t	gl_flashblend;
211extern	cvar_t	gl_nocolors;
212extern	cvar_t	gl_doubleeyes;
213
214extern	int		gl_lightmap_format;
215extern	int		gl_solid_format;
216extern	int		gl_alpha_format;
217
218extern	cvar_t	gl_max_size;
219extern	cvar_t	gl_playermip;
220
221extern	int			mirrortexturenum;	// quake texturenum, not gltexturenum
222extern	qboolean	mirror;
223extern	mplane_t	*mirror_plane;
224
225extern	float	r_world_matrix[16];
226
227extern	const char *gl_vendor;
228extern	const char *gl_renderer;
229extern	const char *gl_version;
230extern	const char *gl_extensions;
231
232void R_TranslatePlayerSkin (int playernum);
233void GL_Bind (int texnum);
234
235// Multitexture
236#define    TEXTURE0_SGIS				0x835E
237#define    TEXTURE1_SGIS				0x835F
238
239#ifndef _WIN32
240#define APIENTRY /* */
241#endif
242
243typedef void (APIENTRY *lpMTexFUNC) (GLenum, GLfloat, GLfloat);
244typedef void (APIENTRY *lpSelTexFUNC) (GLenum);
245extern lpMTexFUNC qglMTexCoord2fSGIS;
246extern lpSelTexFUNC qglSelectTextureSGIS;
247
248extern qboolean gl_mtexable;
249
250void GL_DisableMultitexture(void);
251void GL_EnableMultitexture(void);
252