2 Copyright (C) 1996-1997 Id Software, Inc.
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License
6 as published by the Free Software Foundation; either version 2
7 of the License, or (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13 See the GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 // vid.h -- video driver defs
25 #define ENGINE_ICON ( (gamemode == GAME_NEXUIZ) ? nexuiz_xpm : darkplaces_xpm )
27 extern int cl_available;
29 #define MAX_TEXTUREUNITS 16
31 typedef enum renderpath_e
43 typedef struct viddef_support_s
45 qboolean amd_texture_texture4;
46 qboolean arb_depth_texture;
47 qboolean arb_draw_buffers;
48 qboolean arb_fragment_shader;
49 qboolean arb_multitexture;
50 qboolean arb_occlusion_query;
51 qboolean arb_shader_objects;
52 qboolean arb_shading_language_100;
54 qboolean arb_texture_compression;
55 qboolean arb_texture_cube_map;
56 qboolean arb_texture_env_combine;
57 qboolean arb_texture_gather;
58 qboolean arb_texture_non_power_of_two;
59 qboolean arb_texture_rectangle;
60 qboolean arb_vertex_buffer_object;
61 qboolean arb_vertex_shader;
62 qboolean ati_separate_stencil;
63 qboolean ext_blend_minmax;
64 qboolean ext_blend_subtract;
65 qboolean ext_draw_range_elements;
66 qboolean ext_framebuffer_object;
67 qboolean ext_stencil_two_side;
68 qboolean ext_texture_3d;
69 qboolean ext_texture_compression_s3tc;
70 qboolean ext_texture_edge_clamp;
71 qboolean ext_texture_filter_anisotropic;
75 typedef struct viddef_mode_s
82 qboolean userefreshrate;
83 qboolean stereobuffer;
88 typedef struct viddef_s
90 // these are set by VID_Mode
92 // used in many locations in the renderer
98 qboolean userefreshrate;
99 qboolean stereobuffer;
105 renderpath_t renderpath;
106 qboolean forcevbo; // some renderpaths can not operate without it
108 unsigned int texunits;
109 unsigned int teximageunits;
110 unsigned int texarrayunits;
111 unsigned int drawrangeelements_maxvertices;
112 unsigned int drawrangeelements_maxindices;
114 unsigned int maxtexturesize_2d;
115 unsigned int maxtexturesize_3d;
116 unsigned int maxtexturesize_cubemap;
117 unsigned int maxtexturesize_rectangle;
118 unsigned int max_anisotropy;
119 unsigned int maxdrawbuffers;
121 viddef_support_t support;
124 // global video state
126 extern void (*vid_menudrawfn)(void);
127 extern void (*vid_menukeyfn)(int key);
129 extern qboolean vid_hidden;
130 extern qboolean vid_activewindow;
131 extern cvar_t vid_hardwaregammasupported;
132 extern qboolean vid_usinghwgamma;
133 extern qboolean vid_supportrefreshrate;
135 extern cvar_t vid_fullscreen;
136 extern cvar_t vid_width;
137 extern cvar_t vid_height;
138 extern cvar_t vid_bitsperpixel;
139 extern cvar_t vid_samples;
140 extern cvar_t vid_refreshrate;
141 extern cvar_t vid_userefreshrate;
142 extern cvar_t vid_vsync;
143 extern cvar_t vid_mouse;
144 extern cvar_t vid_grabkeyboard;
145 extern cvar_t vid_stick_mouse;
146 extern cvar_t vid_resizable;
147 extern cvar_t vid_minwidth;
148 extern cvar_t vid_minheight;
150 extern cvar_t gl_finish;
152 extern cvar_t v_gamma;
153 extern cvar_t v_contrast;
154 extern cvar_t v_brightness;
155 extern cvar_t v_color_enable;
156 extern cvar_t v_color_black_r;
157 extern cvar_t v_color_black_g;
158 extern cvar_t v_color_black_b;
159 extern cvar_t v_color_grey_r;
160 extern cvar_t v_color_grey_g;
161 extern cvar_t v_color_grey_b;
162 extern cvar_t v_color_white_r;
163 extern cvar_t v_color_white_g;
164 extern cvar_t v_color_white_b;
165 extern cvar_t v_hwgamma;
167 // brand of graphics chip
168 extern const char *gl_vendor;
169 // graphics chip model and other information
170 extern const char *gl_renderer;
171 // begins with 1.0.0, 1.1.0, 1.2.0, 1.2.1, 1.3.0, 1.3.1, or 1.4.0
172 extern const char *gl_version;
173 // extensions list, space separated
174 extern const char *gl_extensions;
176 extern const char *gl_platform;
177 // another extensions list, containing platform-specific extensions that are
178 // not in the main list
179 extern const char *gl_platformextensions;
180 // name of driver library (opengl32.dll, libGL.so.1, or whatever)
181 extern char gl_driver[256];
183 // compatibility hacks
184 extern qboolean isG200;
185 extern qboolean isRagePro;
187 void *GL_GetProcAddress(const char *name);
188 qboolean GL_CheckExtension(const char *minglver_or_ext, const dllfunction_t *funcs, const char *disableparm, int silent);
190 void VID_Shared_Init(void);
194 void VID_ClearExtensions(void);
195 void VID_CheckExtensions(void);
197 void VID_Init (void);
200 void VID_Shutdown (void);
201 // Called at shutdown
203 int VID_SetMode (int modenum);
204 // sets the mode; only used by the Quake engine for resetting to mode 0 (the
205 // base mode) on memory allocation failures
207 qboolean VID_InitMode(viddef_mode_t *mode);
208 // allocates and opens an appropriate OpenGL context (and its window)
211 // sets hardware gamma correction, returns false if the device does not
212 // support gamma control
213 // (ONLY called by VID_UpdateGamma and VID_RestoreSystemGamma)
214 int VID_SetGamma(unsigned short *ramps, int rampsize);
215 // gets hardware gamma correction, returns false if the device does not
216 // support gamma control
217 // (ONLY called by VID_UpdateGamma and VID_RestoreSystemGamma)
218 int VID_GetGamma(unsigned short *ramps, int rampsize);
219 // makes sure ramp arrays are big enough and calls VID_GetGamma/VID_SetGamma
220 // (ONLY to be called from VID_Finish!)
221 void VID_UpdateGamma(qboolean force, int rampsize);
222 // turns off hardware gamma ramps immediately
223 // (called from various shutdown/deactivation functions)
224 void VID_RestoreSystemGamma(void);
226 void VID_SetMouse (qboolean fullscreengrab, qboolean relative, qboolean hidecursor);
227 void VID_Finish (void);
229 void VID_Restart_f(void);
231 void VID_Start(void);
233 extern unsigned int vid_gammatables_serial; // so other subsystems can poll if gamma parameters have changed; this starts with 0 and gets increased by 1 each time the gamma parameters get changed and VID_BuildGammaTables should be called again
234 extern qboolean vid_gammatables_trivial; // this is set to true if all color control values are at default setting, and it therefore would make no sense to use the gamma table
235 void VID_BuildGammaTables(unsigned short *ramps, int rampsize); // builds the current gamma tables into an array (needs 3*rampsize items)
239 int width, height, bpp, refreshrate;
240 int pixelheight_num, pixelheight_denom;
243 size_t VID_ListModes(vid_mode_t *modes, size_t maxcount);
244 size_t VID_SortModes(vid_mode_t *modes, size_t count, qboolean usebpp, qboolean userefreshrate, qboolean useaspect);