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
44 typedef struct viddef_support_s
47 qboolean amd_texture_texture4;
48 qboolean arb_depth_texture;
49 qboolean arb_draw_buffers;
50 qboolean arb_multitexture;
51 qboolean arb_occlusion_query;
53 qboolean arb_texture_compression;
54 qboolean arb_texture_cube_map;
55 qboolean arb_texture_env_combine;
56 qboolean arb_texture_gather;
57 qboolean arb_texture_non_power_of_two;
58 qboolean arb_vertex_buffer_object;
59 qboolean ati_separate_stencil;
60 qboolean ext_blend_minmax;
61 qboolean ext_blend_subtract;
62 qboolean ext_draw_range_elements;
63 qboolean ext_framebuffer_object;
64 qboolean ext_stencil_two_side;
65 qboolean ext_texture_3d;
66 qboolean ext_texture_compression_s3tc;
67 qboolean ext_texture_edge_clamp;
68 qboolean ext_texture_filter_anisotropic;
72 typedef struct viddef_mode_s
79 qboolean userefreshrate;
80 qboolean stereobuffer;
85 typedef struct viddef_s
87 // these are set by VID_Mode
89 // used in many locations in the renderer
95 qboolean userefreshrate;
96 qboolean stereobuffer;
100 renderpath_t renderpath;
101 qboolean forcevbo; // some renderpaths can not operate without it
102 qboolean useinterleavedarrays; // required by some renderpaths
104 unsigned int texunits;
105 unsigned int teximageunits;
106 unsigned int texarrayunits;
107 unsigned int drawrangeelements_maxvertices;
108 unsigned int drawrangeelements_maxindices;
110 unsigned int maxtexturesize_2d;
111 unsigned int maxtexturesize_3d;
112 unsigned int maxtexturesize_cubemap;
113 unsigned int max_anisotropy;
114 unsigned int maxdrawbuffers;
116 viddef_support_t support;
118 // in RENDERPATH_SOFT this is a 32bpp native-endian ARGB framebuffer
119 // (native-endian ARGB meaning that in little endian it is BGRA bytes,
120 // in big endian it is ARGB byte order, the format is converted during
121 // blit to the window)
122 unsigned int *softpixels;
123 unsigned int *softdepthpixels;
126 // global video state
128 extern void (*vid_menudrawfn)(void);
129 extern void (*vid_menukeyfn)(int key);
131 extern qboolean vid_hidden;
132 extern qboolean vid_activewindow;
133 extern cvar_t vid_hardwaregammasupported;
134 extern qboolean vid_usinghwgamma;
135 extern qboolean vid_supportrefreshrate;
137 extern cvar_t vid_fullscreen;
138 extern cvar_t vid_width;
139 extern cvar_t vid_height;
140 extern cvar_t vid_bitsperpixel;
141 extern cvar_t vid_samples;
142 extern cvar_t vid_refreshrate;
143 extern cvar_t vid_userefreshrate;
144 extern cvar_t vid_vsync;
145 extern cvar_t vid_mouse;
146 extern cvar_t vid_grabkeyboard;
147 extern cvar_t vid_stick_mouse;
148 extern cvar_t vid_resizable;
149 extern cvar_t vid_minwidth;
150 extern cvar_t vid_minheight;
152 extern cvar_t gl_finish;
154 extern cvar_t v_gamma;
155 extern cvar_t v_contrast;
156 extern cvar_t v_brightness;
157 extern cvar_t v_color_enable;
158 extern cvar_t v_color_black_r;
159 extern cvar_t v_color_black_g;
160 extern cvar_t v_color_black_b;
161 extern cvar_t v_color_grey_r;
162 extern cvar_t v_color_grey_g;
163 extern cvar_t v_color_grey_b;
164 extern cvar_t v_color_white_r;
165 extern cvar_t v_color_white_g;
166 extern cvar_t v_color_white_b;
167 extern cvar_t v_hwgamma;
169 // brand of graphics chip
170 extern const char *gl_vendor;
171 // graphics chip model and other information
172 extern const char *gl_renderer;
173 // begins with 1.0.0, 1.1.0, 1.2.0, 1.2.1, 1.3.0, 1.3.1, or 1.4.0
174 extern const char *gl_version;
175 // extensions list, space separated
176 extern const char *gl_extensions;
178 extern const char *gl_platform;
179 // another extensions list, containing platform-specific extensions that are
180 // not in the main list
181 extern const char *gl_platformextensions;
182 // name of driver library (opengl32.dll, libGL.so.1, or whatever)
183 extern char gl_driver[256];
185 // compatibility hacks
186 extern qboolean isG200;
187 extern qboolean isRagePro;
189 void *GL_GetProcAddress(const char *name);
190 qboolean GL_CheckExtension(const char *minglver_or_ext, const dllfunction_t *funcs, const char *disableparm, int silent);
192 void VID_Shared_Init(void);
196 void VID_ClearExtensions(void);
197 void VID_CheckExtensions(void);
199 void VID_Init (void);
202 void VID_Shutdown (void);
203 // Called at shutdown
205 int VID_SetMode (int modenum);
206 // sets the mode; only used by the Quake engine for resetting to mode 0 (the
207 // base mode) on memory allocation failures
209 qboolean VID_InitMode(viddef_mode_t *mode);
210 // allocates and opens an appropriate OpenGL context (and its window)
213 // sets hardware gamma correction, returns false if the device does not
214 // support gamma control
215 // (ONLY called by VID_UpdateGamma and VID_RestoreSystemGamma)
216 int VID_SetGamma(unsigned short *ramps, int rampsize);
217 // gets hardware gamma correction, returns false if the device does not
218 // support gamma control
219 // (ONLY called by VID_UpdateGamma and VID_RestoreSystemGamma)
220 int VID_GetGamma(unsigned short *ramps, int rampsize);
221 // makes sure ramp arrays are big enough and calls VID_GetGamma/VID_SetGamma
222 // (ONLY to be called from VID_Finish!)
223 void VID_UpdateGamma(qboolean force, int rampsize);
224 // turns off hardware gamma ramps immediately
225 // (called from various shutdown/deactivation functions)
226 void VID_RestoreSystemGamma(void);
228 void VID_SetMouse (qboolean fullscreengrab, qboolean relative, qboolean hidecursor);
229 void VID_Finish (void);
231 void VID_Restart_f(void);
233 void VID_Start(void);
235 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
236 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
237 void VID_BuildGammaTables(unsigned short *ramps, int rampsize); // builds the current gamma tables into an array (needs 3*rampsize items)
241 int width, height, bpp, refreshrate;
242 int pixelheight_num, pixelheight_denom;
245 size_t VID_ListModes(vid_mode_t *modes, size_t maxcount);
246 size_t VID_SortModes(vid_mode_t *modes, size_t count, qboolean usebpp, qboolean userefreshrate, qboolean useaspect);