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
40 typedef struct viddef_support_s
42 qboolean amd_texture_texture4;
43 qboolean arb_depth_texture;
44 qboolean arb_draw_buffers;
45 qboolean arb_fragment_shader;
46 qboolean arb_multitexture;
47 qboolean arb_occlusion_query;
48 qboolean arb_shader_objects;
49 qboolean arb_shading_language_100;
51 qboolean arb_texture_compression;
52 qboolean arb_texture_cube_map;
53 qboolean arb_texture_env_combine;
54 qboolean arb_texture_gather;
55 qboolean arb_texture_non_power_of_two;
56 qboolean arb_texture_rectangle;
57 qboolean arb_vertex_buffer_object;
58 qboolean arb_vertex_shader;
59 qboolean ati_separate_stencil;
60 qboolean ext_blend_minmax;
61 qboolean ext_blend_subtract;
62 qboolean ext_compiled_vertex_array;
63 qboolean ext_draw_range_elements;
64 qboolean ext_framebuffer_object;
65 qboolean ext_stencil_two_side;
66 qboolean ext_texture_3d;
67 qboolean ext_texture_compression_s3tc;
68 qboolean ext_texture_edge_clamp;
69 qboolean ext_texture_filter_anisotropic;
73 typedef struct viddef_mode_s
80 qboolean userefreshrate;
81 qboolean stereobuffer;
86 typedef struct viddef_s
88 // these are set by VID_Mode
90 // used in many locations in the renderer
96 qboolean userefreshrate;
97 qboolean stereobuffer;
103 renderpath_t renderpath;
105 unsigned int texunits;
106 unsigned int teximageunits;
107 unsigned int texarrayunits;
108 unsigned int drawrangeelements_maxvertices;
109 unsigned int drawrangeelements_maxindices;
111 unsigned int maxtexturesize_2d;
112 unsigned int maxtexturesize_3d;
113 unsigned int maxtexturesize_cubemap;
114 unsigned int maxtexturesize_rectangle;
115 unsigned int max_anisotropy;
116 unsigned int maxdrawbuffers;
118 viddef_support_t support;
121 // global video state
123 extern void (*vid_menudrawfn)(void);
124 extern void (*vid_menukeyfn)(int key);
126 extern qboolean vid_hidden;
127 extern qboolean vid_activewindow;
128 extern cvar_t vid_hardwaregammasupported;
129 extern qboolean vid_usinghwgamma;
130 extern qboolean vid_supportrefreshrate;
132 extern cvar_t vid_fullscreen;
133 extern cvar_t vid_width;
134 extern cvar_t vid_height;
135 extern cvar_t vid_bitsperpixel;
136 extern cvar_t vid_samples;
137 extern cvar_t vid_refreshrate;
138 extern cvar_t vid_userefreshrate;
139 extern cvar_t vid_vsync;
140 extern cvar_t vid_mouse;
141 extern cvar_t vid_grabkeyboard;
142 extern cvar_t vid_stick_mouse;
143 extern cvar_t vid_resizable;
144 extern cvar_t vid_minwidth;
145 extern cvar_t vid_minheight;
147 extern cvar_t gl_finish;
149 extern cvar_t v_gamma;
150 extern cvar_t v_contrast;
151 extern cvar_t v_brightness;
152 extern cvar_t v_color_enable;
153 extern cvar_t v_color_black_r;
154 extern cvar_t v_color_black_g;
155 extern cvar_t v_color_black_b;
156 extern cvar_t v_color_grey_r;
157 extern cvar_t v_color_grey_g;
158 extern cvar_t v_color_grey_b;
159 extern cvar_t v_color_white_r;
160 extern cvar_t v_color_white_g;
161 extern cvar_t v_color_white_b;
162 extern cvar_t v_hwgamma;
164 // brand of graphics chip
165 extern const char *gl_vendor;
166 // graphics chip model and other information
167 extern const char *gl_renderer;
168 // begins with 1.0.0, 1.1.0, 1.2.0, 1.2.1, 1.3.0, 1.3.1, or 1.4.0
169 extern const char *gl_version;
170 // extensions list, space separated
171 extern const char *gl_extensions;
173 extern const char *gl_platform;
174 // another extensions list, containing platform-specific extensions that are
175 // not in the main list
176 extern const char *gl_platformextensions;
177 // name of driver library (opengl32.dll, libGL.so.1, or whatever)
178 extern char gl_driver[256];
180 // compatibility hacks
181 extern qboolean isG200;
182 extern qboolean isRagePro;
184 void *GL_GetProcAddress(const char *name);
185 int GL_CheckExtension(const char *minglver_or_ext, const dllfunction_t *funcs, const char *disableparm, int silent);
187 void VID_Shared_Init(void);
191 void VID_CheckExtensions(void);
193 void VID_Init (void);
196 void VID_Shutdown (void);
197 // Called at shutdown
199 int VID_SetMode (int modenum);
200 // sets the mode; only used by the Quake engine for resetting to mode 0 (the
201 // base mode) on memory allocation failures
203 qboolean VID_InitMode(viddef_mode_t *mode);
204 // allocates and opens an appropriate OpenGL context (and its window)
207 // sets hardware gamma correction, returns false if the device does not
208 // support gamma control
209 // (ONLY called by VID_UpdateGamma and VID_RestoreSystemGamma)
210 int VID_SetGamma(unsigned short *ramps, int rampsize);
211 // gets 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_GetGamma(unsigned short *ramps, int rampsize);
215 // makes sure ramp arrays are big enough and calls VID_GetGamma/VID_SetGamma
216 // (ONLY to be called from VID_Finish!)
217 void VID_UpdateGamma(qboolean force, int rampsize);
218 // turns off hardware gamma ramps immediately
219 // (called from various shutdown/deactivation functions)
220 void VID_RestoreSystemGamma(void);
222 void VID_SetMouse (qboolean fullscreengrab, qboolean relative, qboolean hidecursor);
223 void VID_Finish (void);
225 void VID_Restart_f(void);
227 void VID_Start(void);
229 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
230 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
231 void VID_BuildGammaTables(unsigned short *ramps, int rampsize); // builds the current gamma tables into an array (needs 3*rampsize items)
235 int width, height, bpp, refreshrate;
236 int pixelheight_num, pixelheight_denom;
239 size_t VID_ListModes(vid_mode_t *modes, size_t maxcount);
240 size_t VID_SortModes(vid_mode_t *modes, size_t count, qboolean usebpp, qboolean userefreshrate, qboolean useaspect);