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
45 typedef struct viddef_support_s
48 qboolean gl20shaders130;
49 qboolean amd_texture_texture4;
50 qboolean arb_depth_texture;
51 qboolean arb_draw_buffers;
52 qboolean arb_multitexture;
53 qboolean arb_occlusion_query;
55 qboolean arb_texture_compression;
56 qboolean arb_texture_cube_map;
57 qboolean arb_texture_env_combine;
58 qboolean arb_texture_gather;
59 qboolean arb_texture_non_power_of_two;
60 qboolean arb_vertex_buffer_object;
61 qboolean ati_separate_stencil;
62 qboolean ext_blend_minmax;
63 qboolean ext_blend_subtract;
64 qboolean ext_draw_range_elements;
65 qboolean ext_framebuffer_object;
66 qboolean ext_stencil_two_side;
67 qboolean ext_texture_3d;
68 qboolean ext_texture_compression_s3tc;
69 qboolean ext_texture_edge_clamp;
70 qboolean ext_texture_filter_anisotropic;
71 qboolean ext_texture_srgb;
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;
102 qboolean sRGB2D; // whether 2D rendering is sRGB corrected (based on sRGBcapable2D)
103 qboolean sRGB3D; // whether 3D rendering is sRGB corrected (based on sRGBcapable3D)
104 qboolean sRGBcapable2D; // whether 2D rendering can be sRGB corrected (renderpath, v_hwgamma)
105 qboolean sRGBcapable3D; // whether 3D rendering can be sRGB corrected (renderpath, v_hwgamma)
107 renderpath_t renderpath;
108 qboolean forcevbo; // some renderpaths can not operate without it
109 qboolean useinterleavedarrays; // required by some renderpaths
111 unsigned int texunits;
112 unsigned int teximageunits;
113 unsigned int texarrayunits;
114 unsigned int drawrangeelements_maxvertices;
115 unsigned int drawrangeelements_maxindices;
117 unsigned int maxtexturesize_2d;
118 unsigned int maxtexturesize_3d;
119 unsigned int maxtexturesize_cubemap;
120 unsigned int max_anisotropy;
121 unsigned int maxdrawbuffers;
123 viddef_support_t support;
125 // in RENDERPATH_SOFT this is a 32bpp native-endian ARGB framebuffer
126 // (native-endian ARGB meaning that in little endian it is BGRA bytes,
127 // in big endian it is ARGB byte order, the format is converted during
128 // blit to the window)
129 unsigned int *softpixels;
130 unsigned int *softdepthpixels;
132 int forcetextype; // always use GL_BGRA for D3D, always use GL_RGBA for GLES, etc
135 // global video state
137 extern void (*vid_menudrawfn)(void);
138 extern void (*vid_menukeyfn)(int key);
140 extern qboolean vid_hidden;
141 extern qboolean vid_activewindow;
142 extern cvar_t vid_hardwaregammasupported;
143 extern qboolean vid_usinghwgamma;
144 extern qboolean vid_supportrefreshrate;
146 extern cvar_t vid_soft;
147 extern cvar_t vid_soft_threads;
148 extern cvar_t vid_soft_interlace;
150 extern cvar_t vid_fullscreen;
151 extern cvar_t vid_width;
152 extern cvar_t vid_height;
153 extern cvar_t vid_bitsperpixel;
154 extern cvar_t vid_samples;
155 extern cvar_t vid_refreshrate;
156 extern cvar_t vid_userefreshrate;
157 extern cvar_t vid_vsync;
158 extern cvar_t vid_mouse;
159 extern cvar_t vid_grabkeyboard;
160 extern cvar_t vid_touchscreen;
161 extern cvar_t vid_stick_mouse;
162 extern cvar_t vid_resizable;
163 extern cvar_t vid_minwidth;
164 extern cvar_t vid_minheight;
166 extern cvar_t gl_finish;
168 extern cvar_t v_gamma;
169 extern cvar_t v_contrast;
170 extern cvar_t v_brightness;
171 extern cvar_t v_color_enable;
172 extern cvar_t v_color_black_r;
173 extern cvar_t v_color_black_g;
174 extern cvar_t v_color_black_b;
175 extern cvar_t v_color_grey_r;
176 extern cvar_t v_color_grey_g;
177 extern cvar_t v_color_grey_b;
178 extern cvar_t v_color_white_r;
179 extern cvar_t v_color_white_g;
180 extern cvar_t v_color_white_b;
181 extern cvar_t v_hwgamma;
183 // brand of graphics chip
184 extern const char *gl_vendor;
185 // graphics chip model and other information
186 extern const char *gl_renderer;
187 // begins with 1.0.0, 1.1.0, 1.2.0, 1.2.1, 1.3.0, 1.3.1, or 1.4.0
188 extern const char *gl_version;
189 // extensions list, space separated
190 extern const char *gl_extensions;
192 extern const char *gl_platform;
193 // another extensions list, containing platform-specific extensions that are
194 // not in the main list
195 extern const char *gl_platformextensions;
196 // name of driver library (opengl32.dll, libGL.so.1, or whatever)
197 extern char gl_driver[256];
199 // compatibility hacks
200 extern qboolean isG200;
201 extern qboolean isRagePro;
203 void *GL_GetProcAddress(const char *name);
204 qboolean GL_CheckExtension(const char *minglver_or_ext, const dllfunction_t *funcs, const char *disableparm, int silent);
206 void VID_Shared_Init(void);
210 void VID_ClearExtensions(void);
211 void VID_CheckExtensions(void);
213 void VID_Init (void);
216 void VID_Shutdown (void);
217 // Called at shutdown
219 int VID_SetMode (int modenum);
220 // sets the mode; only used by the Quake engine for resetting to mode 0 (the
221 // base mode) on memory allocation failures
223 qboolean VID_InitMode(viddef_mode_t *mode);
224 // allocates and opens an appropriate OpenGL context (and its window)
227 // sets hardware gamma correction, returns false if the device does not
228 // support gamma control
229 // (ONLY called by VID_UpdateGamma and VID_RestoreSystemGamma)
230 int VID_SetGamma(unsigned short *ramps, int rampsize);
231 // gets hardware gamma correction, returns false if the device does not
232 // support gamma control
233 // (ONLY called by VID_UpdateGamma and VID_RestoreSystemGamma)
234 int VID_GetGamma(unsigned short *ramps, int rampsize);
235 // makes sure ramp arrays are big enough and calls VID_GetGamma/VID_SetGamma
236 // (ONLY to be called from VID_Finish!)
237 void VID_UpdateGamma(qboolean force, int rampsize);
238 // turns off hardware gamma ramps immediately
239 // (called from various shutdown/deactivation functions)
240 void VID_RestoreSystemGamma(void);
242 void VID_SetMouse (qboolean fullscreengrab, qboolean relative, qboolean hidecursor);
243 void VID_Finish (void);
245 void VID_Restart_f(void);
247 void VID_Start(void);
249 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
250 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
251 void VID_BuildGammaTables(unsigned short *ramps, int rampsize); // builds the current gamma tables into an array (needs 3*rampsize items)
255 int width, height, bpp, refreshrate;
256 int pixelheight_num, pixelheight_denom;
259 size_t VID_ListModes(vid_mode_t *modes, size_t maxcount);
260 size_t VID_SortModes(vid_mode_t *modes, size_t count, qboolean usebpp, qboolean userefreshrate, qboolean useaspect);
261 void VID_Soft_SharedSetup(void);