8 // LordHavoc: these are only set in wgl
9 qboolean isG200 = false; // LordHavoc: the Matrox G200 can't do per pixel alpha, and it uses a D3D driver for GL... ugh...
10 qboolean isRagePro = false; // LordHavoc: the ATI Rage Pro has limitations with per pixel alpha (the color scaler does not apply to per pixel alpha images...), although not as bad as a G200.
12 // AK FIXME -> input_dest
13 qboolean in_client_mouse = true;
15 // AK where should it be placed ?
16 float in_mouse_x, in_mouse_y;
18 // value of GL_MAX_TEXTURE_<various>_SIZE
19 int gl_max_texture_size = 0;
20 int gl_max_3d_texture_size = 0;
21 int gl_max_cube_map_texture_size = 0;
22 // GL_ARB_multitexture
23 int gl_textureunits = 1;
24 // GL_ARB_texture_env_combine or GL_EXT_texture_env_combine
25 int gl_combine_extension = false;
26 // GL_EXT_compiled_vertex_array
27 int gl_supportslockarrays = false;
28 // GLX_SGI_swap_control or WGL_EXT_swap_control
29 int gl_videosyncavailable = false;
31 int gl_stencil = false;
32 // 3D textures available
33 int gl_texture3d = false;
34 // GL_ARB_texture_cubemap
35 int gl_texturecubemap = false;
36 // GL_ARB_texture_env_dot3
37 int gl_dot3arb = false;
38 // GL_SGIS_texture_edge_clamp
39 int gl_support_clamptoedge = false;
40 // GL_EXT_texture_filter_anisotropic
41 int gl_support_anisotropy = false;
42 int gl_max_anisotropy = 1;
43 // GL_NV_texture_shader
44 int gl_textureshader = false;
45 // GL_EXT_stencil_two_side
46 int gl_support_stenciltwoside = false;
47 // GL_ARB_shader_objects
48 int gl_support_shader_objects = false;
49 // GL_ARB_shading_language_100
50 int gl_support_shading_language_100 = false;
51 // GL_ARB_vertex_shader
52 int gl_support_vertex_shader = false;
53 // GL_ARB_fragment_shader
54 int gl_support_fragment_shader = false;
56 int gl_support_half_float = false;
58 // LordHavoc: if window is hidden, don't update screen
59 qboolean vid_hidden = true;
60 // LordHavoc: if window is not the active window, don't hog as much CPU time,
61 // let go of the mouse, turn off sound, and restore system gamma ramps...
62 qboolean vid_activewindow = true;
64 // we don't know until we try it!
65 cvar_t vid_hardwaregammasupported = {CVAR_READONLY,"vid_hardwaregammasupported","1"};
66 // whether hardware gamma ramps are currently in effect
67 qboolean vid_usinghwgamma = false;
69 unsigned short vid_gammaramps[768];
70 unsigned short vid_systemgammaramps[768];
72 cvar_t vid_fullscreen = {CVAR_SAVE, "vid_fullscreen", "1"};
73 cvar_t vid_width = {CVAR_SAVE, "vid_width", "640"};
74 cvar_t vid_height = {CVAR_SAVE, "vid_height", "480"};
75 cvar_t vid_bitsperpixel = {CVAR_SAVE, "vid_bitsperpixel", "32"};
77 cvar_t vid_vsync = {CVAR_SAVE, "vid_vsync", "0"};
78 cvar_t vid_mouse = {CVAR_SAVE, "vid_mouse", "1"};
79 cvar_t gl_combine = {0, "gl_combine", "1"};
80 cvar_t gl_finish = {0, "gl_finish", "0"};
82 cvar_t v_gamma = {CVAR_SAVE, "v_gamma", "1"};
83 cvar_t v_contrast = {CVAR_SAVE, "v_contrast", "1"};
84 cvar_t v_brightness = {CVAR_SAVE, "v_brightness", "0"};
85 cvar_t v_color_enable = {CVAR_SAVE, "v_color_enable", "0"};
86 cvar_t v_color_black_r = {CVAR_SAVE, "v_color_black_r", "0"};
87 cvar_t v_color_black_g = {CVAR_SAVE, "v_color_black_g", "0"};
88 cvar_t v_color_black_b = {CVAR_SAVE, "v_color_black_b", "0"};
89 cvar_t v_color_grey_r = {CVAR_SAVE, "v_color_grey_r", "0.5"};
90 cvar_t v_color_grey_g = {CVAR_SAVE, "v_color_grey_g", "0.5"};
91 cvar_t v_color_grey_b = {CVAR_SAVE, "v_color_grey_b", "0.5"};
92 cvar_t v_color_white_r = {CVAR_SAVE, "v_color_white_r", "1"};
93 cvar_t v_color_white_g = {CVAR_SAVE, "v_color_white_g", "1"};
94 cvar_t v_color_white_b = {CVAR_SAVE, "v_color_white_b", "1"};
95 cvar_t v_hwgamma = {CVAR_SAVE, "v_hwgamma", "1"};
96 cvar_t v_psycho = {0, "v_psycho", "0"};
98 // brand of graphics chip
99 const char *gl_vendor;
100 // graphics chip model and other information
101 const char *gl_renderer;
102 // begins with 1.0.0, 1.1.0, 1.2.0, 1.2.1, 1.3.0, 1.3.1, or 1.4.0
103 const char *gl_version;
104 // extensions list, space separated
105 const char *gl_extensions;
107 const char *gl_platform;
108 // another extensions list, containing platform-specific extensions that are
109 // not in the main list
110 const char *gl_platformextensions;
111 // name of driver library (opengl32.dll, libGL.so.1, or whatever)
114 // GL_ARB_multitexture
115 void (GLAPIENTRY *qglMultiTexCoord1f) (GLenum, GLfloat);
116 void (GLAPIENTRY *qglMultiTexCoord2f) (GLenum, GLfloat, GLfloat);
117 void (GLAPIENTRY *qglMultiTexCoord3f) (GLenum, GLfloat, GLfloat, GLfloat);
118 void (GLAPIENTRY *qglMultiTexCoord4f) (GLenum, GLfloat, GLfloat, GLfloat, GLfloat);
119 void (GLAPIENTRY *qglActiveTexture) (GLenum);
120 void (GLAPIENTRY *qglClientActiveTexture) (GLenum);
122 // GL_EXT_compiled_vertex_array
123 void (GLAPIENTRY *qglLockArraysEXT) (GLint first, GLint count);
124 void (GLAPIENTRY *qglUnlockArraysEXT) (void);
126 //GL_NV_vertex_array_range
127 GLvoid *(GLAPIENTRY *qglAllocateMemoryNV)(GLsizei size, GLfloat readFrequency, GLfloat writeFrequency, GLfloat priority);
128 GLvoid (GLAPIENTRY *qglFreeMemoryNV)(GLvoid *pointer);
129 GLvoid (GLAPIENTRY *qglVertexArrayRangeNV)(GLsizei length, GLvoid *pointer);
130 GLvoid (GLAPIENTRY *qglFlushVertexArrayRangeNV)(GLvoid);
132 // general GL functions
134 void (GLAPIENTRY *qglClearColor)(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
136 void (GLAPIENTRY *qglClear)(GLbitfield mask);
138 void (GLAPIENTRY *qglAlphaFunc)(GLenum func, GLclampf ref);
139 void (GLAPIENTRY *qglBlendFunc)(GLenum sfactor, GLenum dfactor);
140 void (GLAPIENTRY *qglCullFace)(GLenum mode);
142 void (GLAPIENTRY *qglDrawBuffer)(GLenum mode);
143 void (GLAPIENTRY *qglReadBuffer)(GLenum mode);
144 void (GLAPIENTRY *qglEnable)(GLenum cap);
145 void (GLAPIENTRY *qglDisable)(GLenum cap);
146 GLboolean (GLAPIENTRY *qglIsEnabled)(GLenum cap);
148 void (GLAPIENTRY *qglEnableClientState)(GLenum cap);
149 void (GLAPIENTRY *qglDisableClientState)(GLenum cap);
151 void (GLAPIENTRY *qglGetBooleanv)(GLenum pname, GLboolean *params);
152 void (GLAPIENTRY *qglGetDoublev)(GLenum pname, GLdouble *params);
153 void (GLAPIENTRY *qglGetFloatv)(GLenum pname, GLfloat *params);
154 void (GLAPIENTRY *qglGetIntegerv)(GLenum pname, GLint *params);
156 GLenum (GLAPIENTRY *qglGetError)(void);
157 const GLubyte* (GLAPIENTRY *qglGetString)(GLenum name);
158 void (GLAPIENTRY *qglFinish)(void);
159 void (GLAPIENTRY *qglFlush)(void);
161 void (GLAPIENTRY *qglClearDepth)(GLclampd depth);
162 void (GLAPIENTRY *qglDepthFunc)(GLenum func);
163 void (GLAPIENTRY *qglDepthMask)(GLboolean flag);
164 void (GLAPIENTRY *qglDepthRange)(GLclampd near_val, GLclampd far_val);
165 void (GLAPIENTRY *qglColorMask)(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);
167 void (GLAPIENTRY *qglDrawRangeElements)(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const GLvoid *indices);
168 void (GLAPIENTRY *qglDrawElements)(GLenum mode, GLsizei count, GLenum type, const GLvoid *indices);
169 void (GLAPIENTRY *qglVertexPointer)(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr);
170 void (GLAPIENTRY *qglNormalPointer)(GLenum type, GLsizei stride, const GLvoid *ptr);
171 void (GLAPIENTRY *qglColorPointer)(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr);
172 void (GLAPIENTRY *qglTexCoordPointer)(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr);
173 void (GLAPIENTRY *qglArrayElement)(GLint i);
175 void (GLAPIENTRY *qglColor4f)(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
176 void (GLAPIENTRY *qglTexCoord1f)(GLfloat s);
177 void (GLAPIENTRY *qglTexCoord2f)(GLfloat s, GLfloat t);
178 void (GLAPIENTRY *qglTexCoord3f)(GLfloat s, GLfloat t, GLfloat r);
179 void (GLAPIENTRY *qglTexCoord4f)(GLfloat s, GLfloat t, GLfloat r, GLfloat q);
180 void (GLAPIENTRY *qglVertex2f)(GLfloat x, GLfloat y);
181 void (GLAPIENTRY *qglVertex3f)(GLfloat x, GLfloat y, GLfloat z);
182 void (GLAPIENTRY *qglBegin)(GLenum mode);
183 void (GLAPIENTRY *qglEnd)(void);
185 void (GLAPIENTRY *qglMatrixMode)(GLenum mode);
186 void (GLAPIENTRY *qglOrtho)(GLdouble left, GLdouble right, GLdouble bottom, GLdouble top, GLdouble near_val, GLdouble far_val);
187 void (GLAPIENTRY *qglFrustum)(GLdouble left, GLdouble right, GLdouble bottom, GLdouble top, GLdouble near_val, GLdouble far_val);
188 void (GLAPIENTRY *qglViewport)(GLint x, GLint y, GLsizei width, GLsizei height);
189 void (GLAPIENTRY *qglPushMatrix)(void);
190 void (GLAPIENTRY *qglPopMatrix)(void);
191 void (GLAPIENTRY *qglLoadIdentity)(void);
192 void (GLAPIENTRY *qglLoadMatrixd)(const GLdouble *m);
193 void (GLAPIENTRY *qglLoadMatrixf)(const GLfloat *m);
194 void (GLAPIENTRY *qglMultMatrixd)(const GLdouble *m);
195 void (GLAPIENTRY *qglMultMatrixf)(const GLfloat *m);
196 void (GLAPIENTRY *qglRotated)(GLdouble angle, GLdouble x, GLdouble y, GLdouble z);
197 void (GLAPIENTRY *qglRotatef)(GLfloat angle, GLfloat x, GLfloat y, GLfloat z);
198 void (GLAPIENTRY *qglScaled)(GLdouble x, GLdouble y, GLdouble z);
199 void (GLAPIENTRY *qglScalef)(GLfloat x, GLfloat y, GLfloat z);
200 void (GLAPIENTRY *qglTranslated)(GLdouble x, GLdouble y, GLdouble z);
201 void (GLAPIENTRY *qglTranslatef)(GLfloat x, GLfloat y, GLfloat z);
203 void (GLAPIENTRY *qglReadPixels)(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid *pixels);
205 void (GLAPIENTRY *qglStencilFunc)(GLenum func, GLint ref, GLuint mask);
206 void (GLAPIENTRY *qglStencilMask)(GLuint mask);
207 void (GLAPIENTRY *qglStencilOp)(GLenum fail, GLenum zfail, GLenum zpass);
208 void (GLAPIENTRY *qglClearStencil)(GLint s);
210 void (GLAPIENTRY *qglTexEnvf)(GLenum target, GLenum pname, GLfloat param);
211 void (GLAPIENTRY *qglTexEnvfv)(GLenum target, GLenum pname, const GLfloat *params);
212 void (GLAPIENTRY *qglTexEnvi)(GLenum target, GLenum pname, GLint param);
213 void (GLAPIENTRY *qglTexParameterf)(GLenum target, GLenum pname, GLfloat param);
214 void (GLAPIENTRY *qglTexParameterfv)(GLenum target, GLenum pname, GLfloat *params);
215 void (GLAPIENTRY *qglTexParameteri)(GLenum target, GLenum pname, GLint param);
217 void (GLAPIENTRY *qglGenTextures)(GLsizei n, GLuint *textures);
218 void (GLAPIENTRY *qglDeleteTextures)(GLsizei n, const GLuint *textures);
219 void (GLAPIENTRY *qglBindTexture)(GLenum target, GLuint texture);
220 //void (GLAPIENTRY *qglPrioritizeTextures)(GLsizei n, const GLuint *textures, const GLclampf *priorities);
221 //GLboolean (GLAPIENTRY *qglAreTexturesResident)(GLsizei n, const GLuint *textures, GLboolean *residences);
222 GLboolean (GLAPIENTRY *qglIsTexture)(GLuint texture);
223 void (GLAPIENTRY *qglPixelStoref)(GLenum pname, GLfloat param);
224 void (GLAPIENTRY *qglPixelStorei)(GLenum pname, GLint param);
226 void (GLAPIENTRY *qglTexImage1D)(GLenum target, GLint level, GLint internalFormat, GLsizei width, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
227 void (GLAPIENTRY *qglTexImage2D)(GLenum target, GLint level, GLint internalFormat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
228 void (GLAPIENTRY *qglTexSubImage1D)(GLenum target, GLint level, GLint xoffset, GLsizei width, GLenum format, GLenum type, const GLvoid *pixels);
229 void (GLAPIENTRY *qglTexSubImage2D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid *pixels);
230 void (GLAPIENTRY *qglCopyTexImage1D)(GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLint border);
231 void (GLAPIENTRY *qglCopyTexImage2D)(GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLsizei height, GLint border);
232 void (GLAPIENTRY *qglCopyTexSubImage1D)(GLenum target, GLint level, GLint xoffset, GLint x, GLint y, GLsizei width);
233 void (GLAPIENTRY *qglCopyTexSubImage2D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height);
236 void (GLAPIENTRY *qglDrawRangeElementsEXT)(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const GLvoid *indices);
238 //void (GLAPIENTRY *qglColorTableEXT)(int, int, int, int, int, const void *);
240 void (GLAPIENTRY *qglTexImage3D)(GLenum target, GLint level, GLenum internalFormat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
241 void (GLAPIENTRY *qglTexSubImage3D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const GLvoid *pixels);
242 void (GLAPIENTRY *qglCopyTexSubImage3D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLint x, GLint y, GLsizei width, GLsizei height);
244 void (GLAPIENTRY *qglScissor)(GLint x, GLint y, GLsizei width, GLsizei height);
246 void (GLAPIENTRY *qglPolygonOffset)(GLfloat factor, GLfloat units);
248 void (GLAPIENTRY *qglActiveStencilFaceEXT)(GLenum);
250 void (GLAPIENTRY *qglDeleteObjectARB)(GLhandleARB obj);
251 GLhandleARB (GLAPIENTRY *qglGetHandleARB)(GLenum pname);
252 void (GLAPIENTRY *qglDetachObjectARB)(GLhandleARB containerObj, GLhandleARB attachedObj);
253 GLhandleARB (GLAPIENTRY *qglCreateShaderObjectARB)(GLenum shaderType);
254 void (GLAPIENTRY *qglShaderSourceARB)(GLhandleARB shaderObj, GLsizei count, const GLcharARB **string, const GLint *length);
255 void (GLAPIENTRY *qglCompileShaderARB)(GLhandleARB shaderObj);
256 GLhandleARB (GLAPIENTRY *qglCreateProgramObjectARB)(void);
257 void (GLAPIENTRY *qglAttachObjectARB)(GLhandleARB containerObj, GLhandleARB obj);
258 void (GLAPIENTRY *qglLinkProgramARB)(GLhandleARB programObj);
259 void (GLAPIENTRY *qglUseProgramObjectARB)(GLhandleARB programObj);
260 void (GLAPIENTRY *qglValidateProgramARB)(GLhandleARB programObj);
261 void (GLAPIENTRY *qglUniform1fARB)(GLint location, GLfloat v0);
262 void (GLAPIENTRY *qglUniform2fARB)(GLint location, GLfloat v0, GLfloat v1);
263 void (GLAPIENTRY *qglUniform3fARB)(GLint location, GLfloat v0, GLfloat v1, GLfloat v2);
264 void (GLAPIENTRY *qglUniform4fARB)(GLint location, GLfloat v0, GLfloat v1, GLfloat v2, GLfloat v3);
265 void (GLAPIENTRY *qglUniform1iARB)(GLint location, GLint v0);
266 void (GLAPIENTRY *qglUniform2iARB)(GLint location, GLint v0, GLint v1);
267 void (GLAPIENTRY *qglUniform3iARB)(GLint location, GLint v0, GLint v1, GLint v2);
268 void (GLAPIENTRY *qglUniform4iARB)(GLint location, GLint v0, GLint v1, GLint v2, GLint v3);
269 void (GLAPIENTRY *qglUniform1fvARB)(GLint location, GLsizei count, const GLfloat *value);
270 void (GLAPIENTRY *qglUniform2fvARB)(GLint location, GLsizei count, const GLfloat *value);
271 void (GLAPIENTRY *qglUniform3fvARB)(GLint location, GLsizei count, const GLfloat *value);
272 void (GLAPIENTRY *qglUniform4fvARB)(GLint location, GLsizei count, const GLfloat *value);
273 void (GLAPIENTRY *qglUniform1ivARB)(GLint location, GLsizei count, const GLint *value);
274 void (GLAPIENTRY *qglUniform2ivARB)(GLint location, GLsizei count, const GLint *value);
275 void (GLAPIENTRY *qglUniform3ivARB)(GLint location, GLsizei count, const GLint *value);
276 void (GLAPIENTRY *qglUniform4ivARB)(GLint location, GLsizei count, const GLint *value);
277 void (GLAPIENTRY *qglUniformMatrix2fvARB)(GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
278 void (GLAPIENTRY *qglUniformMatrix3fvARB)(GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
279 void (GLAPIENTRY *qglUniformMatrix4fvARB)(GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
280 void (GLAPIENTRY *qglGetObjectParameterfvARB)(GLhandleARB obj, GLenum pname, GLfloat *params);
281 void (GLAPIENTRY *qglGetObjectParameterivARB)(GLhandleARB obj, GLenum pname, GLint *params);
282 void (GLAPIENTRY *qglGetInfoLogARB)(GLhandleARB obj, GLsizei maxLength, GLsizei *length, GLcharARB *infoLog);
283 void (GLAPIENTRY *qglGetAttachedObjectsARB)(GLhandleARB containerObj, GLsizei maxCount, GLsizei *count, GLhandleARB *obj);
284 GLint (GLAPIENTRY *qglGetUniformLocationARB)(GLhandleARB programObj, const GLcharARB *name);
285 void (GLAPIENTRY *qglGetActiveUniformARB)(GLhandleARB programObj, GLuint index, GLsizei maxLength, GLsizei *length, GLint *size, GLenum *type, GLcharARB *name);
286 void (GLAPIENTRY *qglGetUniformfvARB)(GLhandleARB programObj, GLint location, GLfloat *params);
287 void (GLAPIENTRY *qglGetUniformivARB)(GLhandleARB programObj, GLint location, GLint *params);
288 void (GLAPIENTRY *qglGetShaderSourceARB)(GLhandleARB obj, GLsizei maxLength, GLsizei *length, GLcharARB *source);
290 //void (GLAPIENTRY *qglVertexAttrib1fARB)(GLuint index, GLfloat v0);
291 //void (GLAPIENTRY *qglVertexAttrib1sARB)(GLuint index, GLshort v0);
292 //void (GLAPIENTRY *qglVertexAttrib1dARB)(GLuint index, GLdouble v0);
293 //void (GLAPIENTRY *qglVertexAttrib2fARB)(GLuint index, GLfloat v0, GLfloat v1);
294 //void (GLAPIENTRY *qglVertexAttrib2sARB)(GLuint index, GLshort v0, GLshort v1);
295 //void (GLAPIENTRY *qglVertexAttrib2dARB)(GLuint index, GLdouble v0, GLdouble v1);
296 //void (GLAPIENTRY *qglVertexAttrib3fARB)(GLuint index, GLfloat v0, GLfloat v1, GLfloat v2);
297 //void (GLAPIENTRY *qglVertexAttrib3sARB)(GLuint index, GLshort v0, GLshort v1, GLshort v2);
298 //void (GLAPIENTRY *qglVertexAttrib3dARB)(GLuint index, GLdouble v0, GLdouble v1, GLdouble v2);
299 //void (GLAPIENTRY *qglVertexAttrib4fARB)(GLuint index, GLfloat v0, GLfloat v1, GLfloat v2, GLfloat v3);
300 //void (GLAPIENTRY *qglVertexAttrib4sARB)(GLuint index, GLshort v0, GLshort v1, GLshort v2, GLshort v3);
301 //void (GLAPIENTRY *qglVertexAttrib4dARB)(GLuint index, GLdouble v0, GLdouble v1, GLdouble v2, GLdouble v3);
302 //void (GLAPIENTRY *qglVertexAttrib4NubARB)(GLuint index, GLubyte x, GLubyte y, GLubyte z, GLubyte w);
303 //void (GLAPIENTRY *qglVertexAttrib1fvARB)(GLuint index, const GLfloat *v);
304 //void (GLAPIENTRY *qglVertexAttrib1svARB)(GLuint index, const GLshort *v);
305 //void (GLAPIENTRY *qglVertexAttrib1dvARB)(GLuint index, const GLdouble *v);
306 //void (GLAPIENTRY *qglVertexAttrib2fvARB)(GLuint index, const GLfloat *v);
307 //void (GLAPIENTRY *qglVertexAttrib2svARB)(GLuint index, const GLshort *v);
308 //void (GLAPIENTRY *qglVertexAttrib2dvARB)(GLuint index, const GLdouble *v);
309 //void (GLAPIENTRY *qglVertexAttrib3fvARB)(GLuint index, const GLfloat *v);
310 //void (GLAPIENTRY *qglVertexAttrib3svARB)(GLuint index, const GLshort *v);
311 //void (GLAPIENTRY *qglVertexAttrib3dvARB)(GLuint index, const GLdouble *v);
312 //void (GLAPIENTRY *qglVertexAttrib4fvARB)(GLuint index, const GLfloat *v);
313 //void (GLAPIENTRY *qglVertexAttrib4svARB)(GLuint index, const GLshort *v);
314 //void (GLAPIENTRY *qglVertexAttrib4dvARB)(GLuint index, const GLdouble *v);
315 //void (GLAPIENTRY *qglVertexAttrib4ivARB)(GLuint index, const GLint *v);
316 //void (GLAPIENTRY *qglVertexAttrib4bvARB)(GLuint index, const GLbyte *v);
317 //void (GLAPIENTRY *qglVertexAttrib4ubvARB)(GLuint index, const GLubyte *v);
318 //void (GLAPIENTRY *qglVertexAttrib4usvARB)(GLuint index, const GLushort *v);
319 //void (GLAPIENTRY *qglVertexAttrib4uivARB)(GLuint index, const GLuint *v);
320 //void (GLAPIENTRY *qglVertexAttrib4NbvARB)(GLuint index, const GLbyte *v);
321 //void (GLAPIENTRY *qglVertexAttrib4NsvARB)(GLuint index, const GLshort *v);
322 //void (GLAPIENTRY *qglVertexAttrib4NivARB)(GLuint index, const GLint *v);
323 //void (GLAPIENTRY *qglVertexAttrib4NubvARB)(GLuint index, const GLubyte *v);
324 //void (GLAPIENTRY *qglVertexAttrib4NusvARB)(GLuint index, const GLushort *v);
325 //void (GLAPIENTRY *qglVertexAttrib4NuivARB)(GLuint index, const GLuint *v);
326 void (GLAPIENTRY *qglVertexAttribPointerARB)(GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const GLvoid *pointer);
327 void (GLAPIENTRY *qglEnableVertexAttribArrayARB)(GLuint index);
328 void (GLAPIENTRY *qglDisableVertexAttribArrayARB)(GLuint index);
329 void (GLAPIENTRY *qglBindAttribLocationARB)(GLhandleARB programObj, GLuint index, const GLcharARB *name);
330 void (GLAPIENTRY *qglGetActiveAttribARB)(GLhandleARB programObj, GLuint index, GLsizei maxLength, GLsizei *length, GLint *size, GLenum *type, GLcharARB *name);
331 GLint (GLAPIENTRY *qglGetAttribLocationARB)(GLhandleARB programObj, const GLcharARB *name);
332 //void (GLAPIENTRY *qglGetVertexAttribdvARB)(GLuint index, GLenum pname, GLdouble *params);
333 //void (GLAPIENTRY *qglGetVertexAttribfvARB)(GLuint index, GLenum pname, GLfloat *params);
334 //void (GLAPIENTRY *qglGetVertexAttribivARB)(GLuint index, GLenum pname, GLint *params);
335 //void (GLAPIENTRY *qglGetVertexAttribPointervARB)(GLuint index, GLenum pname, GLvoid **pointer);
337 int GL_CheckExtension(const char *name, const dllfunction_t *funcs, const char *disableparm, int silent)
340 const dllfunction_t *func;
342 Con_Printf("checking for %s... ", name);
344 for (func = funcs;func && func->name;func++)
345 *func->funcvariable = NULL;
347 if (disableparm && (COM_CheckParm(disableparm) || COM_CheckParm("-safe")))
349 Con_Print("disabled by commandline\n");
353 if (strstr(gl_extensions, name) || strstr(gl_platformextensions, name) || (strncmp(name, "GL_", 3) && strncmp(name, "WGL_", 4) && strncmp(name, "GLX_", 4) && strncmp(name, "AGL_", 4)))
355 for (func = funcs;func && func->name != NULL;func++)
357 // functions are cleared before all the extensions are evaluated
358 if (!(*func->funcvariable = (void *) GL_GetProcAddress(func->name)))
361 Con_Printf("OpenGL extension \"%s\" is missing function \"%s\" - broken driver!\n", name, func->name);
365 // delay the return so it prints all missing functions
368 Con_Print("enabled\n");
373 Con_Print("not detected\n");
378 static dllfunction_t opengl110funcs[] =
380 {"glClearColor", (void **) &qglClearColor},
381 {"glClear", (void **) &qglClear},
382 {"glAlphaFunc", (void **) &qglAlphaFunc},
383 {"glBlendFunc", (void **) &qglBlendFunc},
384 {"glCullFace", (void **) &qglCullFace},
385 {"glDrawBuffer", (void **) &qglDrawBuffer},
386 {"glReadBuffer", (void **) &qglReadBuffer},
387 {"glEnable", (void **) &qglEnable},
388 {"glDisable", (void **) &qglDisable},
389 {"glIsEnabled", (void **) &qglIsEnabled},
390 {"glEnableClientState", (void **) &qglEnableClientState},
391 {"glDisableClientState", (void **) &qglDisableClientState},
392 {"glGetBooleanv", (void **) &qglGetBooleanv},
393 {"glGetDoublev", (void **) &qglGetDoublev},
394 {"glGetFloatv", (void **) &qglGetFloatv},
395 {"glGetIntegerv", (void **) &qglGetIntegerv},
396 {"glGetError", (void **) &qglGetError},
397 {"glGetString", (void **) &qglGetString},
398 {"glFinish", (void **) &qglFinish},
399 {"glFlush", (void **) &qglFlush},
400 {"glClearDepth", (void **) &qglClearDepth},
401 {"glDepthFunc", (void **) &qglDepthFunc},
402 {"glDepthMask", (void **) &qglDepthMask},
403 {"glDepthRange", (void **) &qglDepthRange},
404 {"glDrawElements", (void **) &qglDrawElements},
405 {"glColorMask", (void **) &qglColorMask},
406 {"glVertexPointer", (void **) &qglVertexPointer},
407 {"glNormalPointer", (void **) &qglNormalPointer},
408 {"glColorPointer", (void **) &qglColorPointer},
409 {"glTexCoordPointer", (void **) &qglTexCoordPointer},
410 {"glArrayElement", (void **) &qglArrayElement},
411 {"glColor4f", (void **) &qglColor4f},
412 {"glTexCoord1f", (void **) &qglTexCoord1f},
413 {"glTexCoord2f", (void **) &qglTexCoord2f},
414 {"glTexCoord3f", (void **) &qglTexCoord3f},
415 {"glTexCoord4f", (void **) &qglTexCoord4f},
416 {"glVertex2f", (void **) &qglVertex2f},
417 {"glVertex3f", (void **) &qglVertex3f},
418 {"glBegin", (void **) &qglBegin},
419 {"glEnd", (void **) &qglEnd},
420 {"glMatrixMode", (void **) &qglMatrixMode},
421 {"glOrtho", (void **) &qglOrtho},
422 {"glFrustum", (void **) &qglFrustum},
423 {"glViewport", (void **) &qglViewport},
424 {"glPushMatrix", (void **) &qglPushMatrix},
425 {"glPopMatrix", (void **) &qglPopMatrix},
426 {"glLoadIdentity", (void **) &qglLoadIdentity},
427 {"glLoadMatrixd", (void **) &qglLoadMatrixd},
428 {"glLoadMatrixf", (void **) &qglLoadMatrixf},
429 {"glMultMatrixd", (void **) &qglMultMatrixd},
430 {"glMultMatrixf", (void **) &qglMultMatrixf},
431 {"glRotated", (void **) &qglRotated},
432 {"glRotatef", (void **) &qglRotatef},
433 {"glScaled", (void **) &qglScaled},
434 {"glScalef", (void **) &qglScalef},
435 {"glTranslated", (void **) &qglTranslated},
436 {"glTranslatef", (void **) &qglTranslatef},
437 {"glReadPixels", (void **) &qglReadPixels},
438 {"glStencilFunc", (void **) &qglStencilFunc},
439 {"glStencilMask", (void **) &qglStencilMask},
440 {"glStencilOp", (void **) &qglStencilOp},
441 {"glClearStencil", (void **) &qglClearStencil},
442 {"glTexEnvf", (void **) &qglTexEnvf},
443 {"glTexEnvfv", (void **) &qglTexEnvfv},
444 {"glTexEnvi", (void **) &qglTexEnvi},
445 {"glTexParameterf", (void **) &qglTexParameterf},
446 {"glTexParameterfv", (void **) &qglTexParameterfv},
447 {"glTexParameteri", (void **) &qglTexParameteri},
448 {"glPixelStoref", (void **) &qglPixelStoref},
449 {"glPixelStorei", (void **) &qglPixelStorei},
450 {"glGenTextures", (void **) &qglGenTextures},
451 {"glDeleteTextures", (void **) &qglDeleteTextures},
452 {"glBindTexture", (void **) &qglBindTexture},
453 // {"glPrioritizeTextures", (void **) &qglPrioritizeTextures},
454 // {"glAreTexturesResident", (void **) &qglAreTexturesResident},
455 {"glIsTexture", (void **) &qglIsTexture},
456 {"glTexImage1D", (void **) &qglTexImage1D},
457 {"glTexImage2D", (void **) &qglTexImage2D},
458 {"glTexSubImage1D", (void **) &qglTexSubImage1D},
459 {"glTexSubImage2D", (void **) &qglTexSubImage2D},
460 {"glCopyTexImage1D", (void **) &qglCopyTexImage1D},
461 {"glCopyTexImage2D", (void **) &qglCopyTexImage2D},
462 {"glCopyTexSubImage1D", (void **) &qglCopyTexSubImage1D},
463 {"glCopyTexSubImage2D", (void **) &qglCopyTexSubImage2D},
464 {"glScissor", (void **) &qglScissor},
465 {"glPolygonOffset", (void **) &qglPolygonOffset},
469 static dllfunction_t drawrangeelementsfuncs[] =
471 {"glDrawRangeElements", (void **) &qglDrawRangeElements},
475 static dllfunction_t drawrangeelementsextfuncs[] =
477 {"glDrawRangeElementsEXT", (void **) &qglDrawRangeElementsEXT},
481 static dllfunction_t multitexturefuncs[] =
483 {"glMultiTexCoord1fARB", (void **) &qglMultiTexCoord1f},
484 {"glMultiTexCoord2fARB", (void **) &qglMultiTexCoord2f},
485 {"glMultiTexCoord3fARB", (void **) &qglMultiTexCoord3f},
486 {"glMultiTexCoord4fARB", (void **) &qglMultiTexCoord4f},
487 {"glActiveTextureARB", (void **) &qglActiveTexture},
488 {"glClientActiveTextureARB", (void **) &qglClientActiveTexture},
492 static dllfunction_t compiledvertexarrayfuncs[] =
494 {"glLockArraysEXT", (void **) &qglLockArraysEXT},
495 {"glUnlockArraysEXT", (void **) &qglUnlockArraysEXT},
499 static dllfunction_t texture3dextfuncs[] =
501 {"glTexImage3DEXT", (void **) &qglTexImage3D},
502 {"glTexSubImage3DEXT", (void **) &qglTexSubImage3D},
503 {"glCopyTexSubImage3DEXT", (void **) &qglCopyTexSubImage3D},
507 static dllfunction_t stenciltwosidefuncs[] =
509 {"glActiveStencilFaceEXT", (void **) &qglActiveStencilFaceEXT},
513 static dllfunction_t shaderobjectsfuncs[] =
515 {"glDeleteObjectARB", (void **) &qglDeleteObjectARB},
516 {"glGetHandleARB", (void **) &qglGetHandleARB},
517 {"glDetachObjectARB", (void **) &qglDetachObjectARB},
518 {"glCreateShaderObjectARB", (void **) &qglCreateShaderObjectARB},
519 {"glShaderSourceARB", (void **) &qglShaderSourceARB},
520 {"glCompileShaderARB", (void **) &qglCompileShaderARB},
521 {"glCreateProgramObjectARB", (void **) &qglCreateProgramObjectARB},
522 {"glAttachObjectARB", (void **) &qglAttachObjectARB},
523 {"glLinkProgramARB", (void **) &qglLinkProgramARB},
524 {"glUseProgramObjectARB", (void **) &qglUseProgramObjectARB},
525 {"glValidateProgramARB", (void **) &qglValidateProgramARB},
526 {"glUniform1fARB", (void **) &qglUniform1fARB},
527 {"glUniform2fARB", (void **) &qglUniform2fARB},
528 {"glUniform3fARB", (void **) &qglUniform3fARB},
529 {"glUniform4fARB", (void **) &qglUniform4fARB},
530 {"glUniform1iARB", (void **) &qglUniform1iARB},
531 {"glUniform2iARB", (void **) &qglUniform2iARB},
532 {"glUniform3iARB", (void **) &qglUniform3iARB},
533 {"glUniform4iARB", (void **) &qglUniform4iARB},
534 {"glUniform1fvARB", (void **) &qglUniform1fvARB},
535 {"glUniform2fvARB", (void **) &qglUniform2fvARB},
536 {"glUniform3fvARB", (void **) &qglUniform3fvARB},
537 {"glUniform4fvARB", (void **) &qglUniform4fvARB},
538 {"glUniform1ivARB", (void **) &qglUniform1ivARB},
539 {"glUniform2ivARB", (void **) &qglUniform2ivARB},
540 {"glUniform3ivARB", (void **) &qglUniform3ivARB},
541 {"glUniform4ivARB", (void **) &qglUniform4ivARB},
542 {"glUniformMatrix2fvARB", (void **) &qglUniformMatrix2fvARB},
543 {"glUniformMatrix3fvARB", (void **) &qglUniformMatrix3fvARB},
544 {"glUniformMatrix4fvARB", (void **) &qglUniformMatrix4fvARB},
545 {"glGetObjectParameterfvARB", (void **) &qglGetObjectParameterfvARB},
546 {"glGetObjectParameterivARB", (void **) &qglGetObjectParameterivARB},
547 {"glGetInfoLogARB", (void **) &qglGetInfoLogARB},
548 {"glGetAttachedObjectsARB", (void **) &qglGetAttachedObjectsARB},
549 {"glGetUniformLocationARB", (void **) &qglGetUniformLocationARB},
550 {"glGetActiveUniformARB", (void **) &qglGetActiveUniformARB},
551 {"glGetUniformfvARB", (void **) &qglGetUniformfvARB},
552 {"glGetUniformivARB", (void **) &qglGetUniformivARB},
553 {"glGetShaderSourceARB", (void **) &qglGetShaderSourceARB},
557 static dllfunction_t vertexshaderfuncs[] =
559 // {"glVertexAttrib1fARB", (void **) &qglVertexAttrib1fARB},
560 // {"glVertexAttrib1sARB", (void **) &qglVertexAttrib1sARB},
561 // {"glVertexAttrib1dARB", (void **) &qglVertexAttrib1dARB},
562 // {"glVertexAttrib2fARB", (void **) &qglVertexAttrib2fARB},
563 // {"glVertexAttrib2sARB", (void **) &qglVertexAttrib2sARB},
564 // {"glVertexAttrib2dARB", (void **) &qglVertexAttrib2dARB},
565 // {"glVertexAttrib3fARB", (void **) &qglVertexAttrib3fARB},
566 // {"glVertexAttrib3sARB", (void **) &qglVertexAttrib3sARB},
567 // {"glVertexAttrib3dARB", (void **) &qglVertexAttrib3dARB},
568 // {"glVertexAttrib4fARB", (void **) &qglVertexAttrib4fARB},
569 // {"glVertexAttrib4sARB", (void **) &qglVertexAttrib4sARB},
570 // {"glVertexAttrib4dARB", (void **) &qglVertexAttrib4dARB},
571 // {"glVertexAttrib4NubARB", (void **) &qglVertexAttrib4NubARB},
572 // {"glVertexAttrib1fvARB", (void **) &qglVertexAttrib1fvARB},
573 // {"glVertexAttrib1svARB", (void **) &qglVertexAttrib1svARB},
574 // {"glVertexAttrib1dvARB", (void **) &qglVertexAttrib1dvARB},
575 // {"glVertexAttrib2fvARB", (void **) &qglVertexAttrib1fvARB},
576 // {"glVertexAttrib2svARB", (void **) &qglVertexAttrib1svARB},
577 // {"glVertexAttrib2dvARB", (void **) &qglVertexAttrib1dvARB},
578 // {"glVertexAttrib3fvARB", (void **) &qglVertexAttrib1fvARB},
579 // {"glVertexAttrib3svARB", (void **) &qglVertexAttrib1svARB},
580 // {"glVertexAttrib3dvARB", (void **) &qglVertexAttrib1dvARB},
581 // {"glVertexAttrib4fvARB", (void **) &qglVertexAttrib1fvARB},
582 // {"glVertexAttrib4svARB", (void **) &qglVertexAttrib1svARB},
583 // {"glVertexAttrib4dvARB", (void **) &qglVertexAttrib1dvARB},
584 // {"glVertexAttrib4ivARB", (void **) &qglVertexAttrib1ivARB},
585 // {"glVertexAttrib4bvARB", (void **) &qglVertexAttrib1bvARB},
586 // {"glVertexAttrib4ubvARB", (void **) &qglVertexAttrib1ubvARB},
587 // {"glVertexAttrib4usvARB", (void **) &qglVertexAttrib1usvARB},
588 // {"glVertexAttrib4uivARB", (void **) &qglVertexAttrib1uivARB},
589 // {"glVertexAttrib4NbvARB", (void **) &qglVertexAttrib1NbvARB},
590 // {"glVertexAttrib4NsvARB", (void **) &qglVertexAttrib1NsvARB},
591 // {"glVertexAttrib4NivARB", (void **) &qglVertexAttrib1NivARB},
592 // {"glVertexAttrib4NubvARB", (void **) &qglVertexAttrib1NubvARB},
593 // {"glVertexAttrib4NusvARB", (void **) &qglVertexAttrib1NusvARB},
594 // {"glVertexAttrib4NuivARB", (void **) &qglVertexAttrib1NuivARB},
595 {"glVertexAttribPointerARB", (void **) &qglVertexAttribPointerARB},
596 {"glEnableVertexAttribArrayARB", (void **) &qglEnableVertexAttribArrayARB},
597 {"glDisableVertexAttribArrayARB", (void **) &qglDisableVertexAttribArrayARB},
598 {"glBindAttribLocationARB", (void **) &qglBindAttribLocationARB},
599 {"glGetActiveAttribARB", (void **) &qglGetActiveAttribARB},
600 {"glGetAttribLocationARB", (void **) &qglGetAttribLocationARB},
601 // {"glGetVertexAttribdvARB", (void **) &qglGetVertexAttribdvARB},
602 // {"glGetVertexAttribfvARB", (void **) &qglGetVertexAttribfvARB},
603 // {"glGetVertexAttribivARB", (void **) &qglGetVertexAttribivARB},
604 // {"glGetVertexAttribPointervARB", (void **) &qglGetVertexAttribPointervARB},
609 void VID_CheckExtensions(void)
611 gl_stencil = vid_bitsperpixel.integer == 32;
613 // reset all the gl extension variables here
614 // this should match the declarations
615 gl_max_texture_size = 0;
616 gl_max_3d_texture_size = 0;
617 gl_max_cube_map_texture_size = 0;
619 gl_combine_extension = false;
620 gl_supportslockarrays = false;
621 gl_texture3d = false;
622 gl_texturecubemap = false;
624 gl_support_clamptoedge = false;
625 gl_support_anisotropy = false;
626 gl_max_anisotropy = 1;
627 gl_textureshader = false;
628 gl_support_stenciltwoside = false;
629 gl_support_shader_objects = false;
630 gl_support_shading_language_100 = false;
631 gl_support_vertex_shader = false;
632 gl_support_fragment_shader = false;
634 if (!GL_CheckExtension("OpenGL 1.1.0", opengl110funcs, NULL, false))
635 Sys_Error("OpenGL 1.1.0 functions not found");
637 Con_Printf("GL_VENDOR: %s\n", gl_vendor);
638 Con_Printf("GL_RENDERER: %s\n", gl_renderer);
639 Con_Printf("GL_VERSION: %s\n", gl_version);
640 Con_Printf("GL_EXTENSIONS: %s\n", gl_extensions);
641 Con_Printf("%s_EXTENSIONS: %s\n", gl_platform, gl_platformextensions);
643 qglGetIntegerv(GL_MAX_TEXTURE_SIZE, &gl_max_texture_size);
645 Con_Print("Checking OpenGL extensions...\n");
647 // COMMANDLINEOPTION: GL: -nodrawrangeelements disables GL_EXT_draw_range_elements (renders faster)
648 if (!GL_CheckExtension("glDrawRangeElements", drawrangeelementsfuncs, "-nodrawrangeelements", true))
649 GL_CheckExtension("GL_EXT_draw_range_elements", drawrangeelementsextfuncs, "-nodrawrangeelements", false);
651 // COMMANDLINEOPTION: GL: -nomtex disables GL_ARB_multitexture (required for faster map rendering)
652 if (GL_CheckExtension("GL_ARB_multitexture", multitexturefuncs, "-nomtex", false))
654 qglGetIntegerv(GL_MAX_TEXTURE_UNITS_ARB, &gl_textureunits);
655 // COMMANDLINEOPTION: GL: -nocombine disables GL_ARB_texture_env_combine or GL_EXT_texture_env_combine (required for bumpmapping and faster map rendering)
656 gl_combine_extension = GL_CheckExtension("GL_ARB_texture_env_combine", NULL, "-nocombine", false) || GL_CheckExtension("GL_EXT_texture_env_combine", NULL, "-nocombine", false);
657 // COMMANDLINEOPTION: GL: -nodot3 disables GL_ARB_texture_env_dot3 (required for bumpmapping)
658 if (gl_combine_extension)
659 gl_dot3arb = GL_CheckExtension("GL_ARB_texture_env_dot3", NULL, "-nodot3", false);
662 // COMMANDLINEOPTION: GL: -notexture3d disables GL_EXT_texture3D (required for spherical lights, otherwise they render as a column)
663 if ((gl_texture3d = GL_CheckExtension("GL_EXT_texture3D", texture3dextfuncs, "-notexture3d", false)))
664 qglGetIntegerv(GL_MAX_3D_TEXTURE_SIZE, &gl_max_3d_texture_size);
665 // COMMANDLINEOPTION: GL: -nocubemap disables GL_ARB_texture_cube_map (required for bumpmapping)
666 if ((gl_texturecubemap = GL_CheckExtension("GL_ARB_texture_cube_map", NULL, "-nocubemap", false)))
667 qglGetIntegerv(GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB, &gl_max_cube_map_texture_size);
668 // COMMANDLINEOPTION: GL: -nocva disables GL_EXT_compiled_vertex_array (renders faster)
669 gl_supportslockarrays = GL_CheckExtension("GL_EXT_compiled_vertex_array", compiledvertexarrayfuncs, "-nocva", false);
670 // COMMANDLINEOPTION: GL: -noedgeclamp disables GL_EXT_texture_edge_clamp or GL_SGIS_texture_edge_clamp (recommended, some cards do not support the other texture clamp method)
671 gl_support_clamptoedge = GL_CheckExtension("GL_EXT_texture_edge_clamp", NULL, "-noedgeclamp", false) || GL_CheckExtension("GL_SGIS_texture_edge_clamp", NULL, "-noedgeclamp", false);
673 // COMMANDLINEOPTION: GL: -noanisotropy disables GL_EXT_texture_filter_anisotropic (allows higher quality texturing)
674 if ((gl_support_anisotropy = GL_CheckExtension("GL_EXT_texture_filter_anisotropic", NULL, "-noanisotropy", false)))
675 qglGetIntegerv(GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &gl_max_anisotropy);
677 // COMMANDLINEOPTION: GL: -notextureshader disables GL_NV_texture_shader (required for the Geforce3 water shader, NVIDIA only)
678 gl_textureshader = GL_CheckExtension("GL_NV_texture_shader", NULL, "-notextureshader", false);
680 // COMMANDLINEOPTION: GL: -nostenciltwoside disables GL_EXT_stencil_two_side (accelerates shadow rendering)
681 gl_support_stenciltwoside = GL_CheckExtension("GL_EXT_stencil_two_side", stenciltwosidefuncs, "-nostenciltwoside", false);
683 // we don't care if it's an extension or not, they are identical functions, so keep it simple in the rendering code
684 if (qglDrawRangeElements == NULL)
685 qglDrawRangeElements = qglDrawRangeElementsEXT;
687 // COMMANDLINEOPTION: GL: -noshaderobjects disables GL_ARB_shader_objects (required for vertex shader and fragment shader)
688 // COMMANDLINEOPTION: GL: -noshadinglanguage100 disables GL_ARB_shading_language_100 (required for vertex shader and fragment shader)
689 // COMMANDLINEOPTION: GL: -novertexshader disables GL_ARB_vertex_shader (allows vertex shader effects)
690 // COMMANDLINEOPTION: GL: -nofragmentshader disables GL_ARB_fragment_shader (allows pixel shader effects, can improve per pixel lighting performance and capabilities)
691 if ((gl_support_shader_objects = GL_CheckExtension("GL_ARB_shader_objects", shaderobjectsfuncs, "-noshaderobjects", false)))
692 if ((gl_support_shading_language_100 = GL_CheckExtension("GL_ARB_shading_language_100", NULL, "-noshadinglanguage100", false)))
693 if ((gl_support_vertex_shader = GL_CheckExtension("GL_ARB_vertex_shader", vertexshaderfuncs, "-novertexshader", false)))
694 gl_support_fragment_shader = GL_CheckExtension("GL_ARB_fragment_shader", NULL, "-nofragmentshader", false);
696 // COMMANDLINEOPTION: GL: -nohalffloat disables GL_NV_half_float extension
697 gl_support_half_float = GL_CheckExtension("GL_NV_half_float", NULL, "-nohalffloat", false);
700 qboolean vid_vertexarrays_are_var = false;
701 void *VID_AllocVertexArrays(mempool_t *pool, int size, int fast, float readfrequency, float writefrequency, float priority)
704 vid_vertexarrays_are_var = false;
705 if (fast && qglAllocateMemoryNV)
708 m = qglAllocateMemoryNV(size, readfrequency, writefrequency, priority);
712 vid_vertexarrays_are_var = true;
716 return Mem_Alloc(pool, size);
719 void VID_FreeVertexArrays(void *pointer)
721 if (vid_vertexarrays_are_var)
724 qglFreeMemoryNV(pointer);
729 vid_vertexarrays_are_var = false;
732 void Force_CenterView_f (void)
734 cl.viewangles[PITCH] = 0;
737 static float cachegamma, cachebrightness, cachecontrast, cacheblack[3], cachegrey[3], cachewhite[3];
738 static int cachecolorenable, cachehwgamma;
739 #define BOUNDCVAR(cvar, m1, m2) c = &(cvar);f = bound(m1, c->value, m2);if (c->value != f) Cvar_SetValueQuick(c, f);
740 void VID_UpdateGamma(qboolean force)
744 static int forcenextframe = false;
746 // LordHavoc: don't mess with gamma tables if running dedicated
747 if (cls.state == ca_dedicated)
753 && vid_usinghwgamma == (vid_activewindow && v_hwgamma.integer)
754 && v_gamma.value == cachegamma
755 && v_contrast.value == cachecontrast
756 && v_brightness.value == cachebrightness
757 && cachecolorenable == v_color_enable.integer
758 && cacheblack[0] == v_color_black_r.value
759 && cacheblack[1] == v_color_black_g.value
760 && cacheblack[2] == v_color_black_b.value
761 && cachegrey[0] == v_color_grey_r.value
762 && cachegrey[1] == v_color_grey_g.value
763 && cachegrey[2] == v_color_grey_b.value
764 && cachewhite[0] == v_color_white_r.value
765 && cachewhite[1] == v_color_white_g.value
766 && cachewhite[2] == v_color_white_b.value)
769 forcenextframe = false;
771 if (vid_activewindow && v_hwgamma.integer)
773 if (!vid_usinghwgamma)
775 vid_usinghwgamma = true;
776 Cvar_SetValueQuick(&vid_hardwaregammasupported, VID_GetGamma(vid_systemgammaramps));
779 BOUNDCVAR(v_gamma, 0.1, 5);cachegamma = v_gamma.value;
780 BOUNDCVAR(v_contrast, 1, 5);cachecontrast = v_contrast.value;
781 BOUNDCVAR(v_brightness, 0, 0.8);cachebrightness = v_brightness.value;
782 BOUNDCVAR(v_color_black_r, 0, 0.8);cacheblack[0] = v_color_black_r.value;
783 BOUNDCVAR(v_color_black_g, 0, 0.8);cacheblack[1] = v_color_black_g.value;
784 BOUNDCVAR(v_color_black_b, 0, 0.8);cacheblack[2] = v_color_black_b.value;
785 BOUNDCVAR(v_color_grey_r, 0, 0.95);cachegrey[0] = v_color_grey_r.value;
786 BOUNDCVAR(v_color_grey_g, 0, 0.95);cachegrey[1] = v_color_grey_g.value;
787 BOUNDCVAR(v_color_grey_b, 0, 0.95);cachegrey[2] = v_color_grey_b.value;
788 BOUNDCVAR(v_color_white_r, 1, 5);cachewhite[0] = v_color_white_r.value;
789 BOUNDCVAR(v_color_white_g, 1, 5);cachewhite[1] = v_color_white_g.value;
790 BOUNDCVAR(v_color_white_b, 1, 5);cachewhite[2] = v_color_white_b.value;
791 cachecolorenable = v_color_enable.integer;
792 cachehwgamma = v_hwgamma.integer;
794 if (cachecolorenable)
796 BuildGammaTable16(1.0f, invpow(0.5, 1 - cachegrey[0]), cachewhite[0], cacheblack[0], vid_gammaramps);
797 BuildGammaTable16(1.0f, invpow(0.5, 1 - cachegrey[1]), cachewhite[1], cacheblack[1], vid_gammaramps + 256);
798 BuildGammaTable16(1.0f, invpow(0.5, 1 - cachegrey[2]), cachewhite[2], cacheblack[2], vid_gammaramps + 512);
802 BuildGammaTable16(1.0f, cachegamma, cachecontrast, cachebrightness, vid_gammaramps);
803 BuildGammaTable16(1.0f, cachegamma, cachecontrast, cachebrightness, vid_gammaramps + 256);
804 BuildGammaTable16(1.0f, cachegamma, cachecontrast, cachebrightness, vid_gammaramps + 512);
807 // LordHavoc: this code came from Ben Winslow and Zinx Verituse, I have
808 // immensely butchered it to work with variable framerates and fit in with
809 // the rest of darkplaces.
810 if (v_psycho.integer)
814 static float n[3], nd[3], nt[3];
815 static int init = true;
816 unsigned short *ramp;
817 forcenextframe = true;
821 for (x = 0;x < 3;x++)
823 n[x] = lhrandom(0, 1);
824 nd[x] = (rand()&1)?-0.25:0.25;
825 nt[x] = lhrandom(1, 8.2);
829 for (x = 0;x < 3;x++)
831 nt[x] -= host_realframetime;
835 nt[x] += lhrandom(1, 8.2);
837 n[x] += nd[x] * host_realframetime;
841 for (x = 0, ramp = vid_gammaramps;x < 3;x++)
842 for (y = 0, t = n[x] - 0.75f;y < 256;y++, t += 0.75f * (2.0f / 256.0f))
843 *ramp++ = cos(t*(M_PI*2.0)) * 32767.0f + 32767.0f;
846 Cvar_SetValueQuick(&vid_hardwaregammasupported, VID_SetGamma(vid_gammaramps));
847 // if custom gamma ramps failed (Windows stupidity), restore to system gamma
848 if(!vid_hardwaregammasupported.integer)
849 VID_SetGamma(vid_systemgammaramps);
853 if (vid_usinghwgamma)
855 vid_usinghwgamma = false;
856 Cvar_SetValueQuick(&vid_hardwaregammasupported, VID_SetGamma(vid_systemgammaramps));
861 void VID_RestoreSystemGamma(void)
863 if (vid_usinghwgamma)
865 vid_usinghwgamma = false;
866 VID_SetGamma(vid_systemgammaramps);
870 void VID_Shared_Init(void)
872 Cvar_RegisterVariable(&vid_hardwaregammasupported);
873 Cvar_RegisterVariable(&v_gamma);
874 Cvar_RegisterVariable(&v_brightness);
875 Cvar_RegisterVariable(&v_contrast);
877 Cvar_RegisterVariable(&v_color_enable);
878 Cvar_RegisterVariable(&v_color_black_r);
879 Cvar_RegisterVariable(&v_color_black_g);
880 Cvar_RegisterVariable(&v_color_black_b);
881 Cvar_RegisterVariable(&v_color_grey_r);
882 Cvar_RegisterVariable(&v_color_grey_g);
883 Cvar_RegisterVariable(&v_color_grey_b);
884 Cvar_RegisterVariable(&v_color_white_r);
885 Cvar_RegisterVariable(&v_color_white_g);
886 Cvar_RegisterVariable(&v_color_white_b);
888 Cvar_RegisterVariable(&v_hwgamma);
890 Cvar_RegisterVariable(&v_psycho);
892 Cvar_RegisterVariable(&vid_fullscreen);
893 Cvar_RegisterVariable(&vid_width);
894 Cvar_RegisterVariable(&vid_height);
895 Cvar_RegisterVariable(&vid_bitsperpixel);
896 Cvar_RegisterVariable(&vid_vsync);
897 Cvar_RegisterVariable(&vid_mouse);
898 Cvar_RegisterVariable(&gl_combine);
899 Cvar_RegisterVariable(&gl_finish);
900 Cmd_AddCommand("force_centerview", Force_CenterView_f);
901 Cmd_AddCommand("vid_restart", VID_Restart_f);
902 if (gamemode == GAME_GOODVSBAD2)
903 Cvar_Set("gl_combine", "0");
906 int VID_Mode(int fullscreen, int width, int height, int bpp)
908 Con_Printf("Video: %s %dx%dx%d\n", fullscreen ? "fullscreen" : "window", width, height, bpp);
909 if (VID_InitMode(fullscreen, width, height, bpp))
911 vid.fullscreen = fullscreen;
914 vid.bitsperpixel = bpp;
915 Cvar_SetValueQuick(&vid_fullscreen, fullscreen);
916 Cvar_SetValueQuick(&vid_width, width);
917 Cvar_SetValueQuick(&vid_height, height);
918 Cvar_SetValueQuick(&vid_bitsperpixel, bpp);
925 static void VID_OpenSystems(void)
931 static void VID_CloseSystems(void)
934 R_Modules_Shutdown();
937 qboolean vid_commandlinecheck = true;
939 void VID_Restart_f(void)
941 // don't crash if video hasn't started yet
942 if (vid_commandlinecheck)
945 Con_Printf("VID_Restart: changing from %s %dx%dx%dbpp, to %s %dx%dx%dbpp.\n",
946 vid.fullscreen ? "fullscreen" : "window", vid.width, vid.height, vid.bitsperpixel,
947 vid_fullscreen.integer ? "fullscreen" : "window", vid_width.integer, vid_height.integer, vid_bitsperpixel.integer);
950 if (!VID_Mode(vid_fullscreen.integer, vid_width.integer, vid_height.integer, vid_bitsperpixel.integer))
952 Con_Print("Video mode change failed\n");
953 if (!VID_Mode(vid.fullscreen, vid.width, vid.height, vid.bitsperpixel))
954 Sys_Error("Unable to restore to last working video mode");
959 // this is only called once by Host_StartVideo
962 int i, width, height, success;
963 if (vid_commandlinecheck)
965 // interpret command-line parameters
966 vid_commandlinecheck = false;
967 // COMMANDLINEOPTION: Video: -window performs +vid_fullscreen 0
968 if (COM_CheckParm("-window") || COM_CheckParm("-safe"))
969 Cvar_SetValueQuick(&vid_fullscreen, false);
970 // COMMANDLINEOPTION: Video: -fullscreen performs +vid_fullscreen 1
971 if (COM_CheckParm("-fullscreen"))
972 Cvar_SetValueQuick(&vid_fullscreen, true);
975 // COMMANDLINEOPTION: Video: -width <pixels> performs +vid_width <pixels> and also +vid_height <pixels*3/4> if only -width is specified (example: -width 1024 sets 1024x768 mode)
976 if ((i = COM_CheckParm("-width")) != 0)
977 width = atoi(com_argv[i+1]);
978 // COMMANDLINEOPTION: Video: -height <pixels> performs +vid_height <pixels> and also +vid_width <pixels*4/3> if only -height is specified (example: -height 768 sets 1024x768 mode)
979 if ((i = COM_CheckParm("-height")) != 0)
980 height = atoi(com_argv[i+1]);
982 width = height * 4 / 3;
984 height = width * 3 / 4;
986 Cvar_SetValueQuick(&vid_width, width);
988 Cvar_SetValueQuick(&vid_height, height);
989 // COMMANDLINEOPTION: Video: -bpp <bits> performs +vid_bitsperpixel <bits> (example -bpp 32 or -bpp 16)
990 if ((i = COM_CheckParm("-bpp")) != 0)
991 Cvar_SetQuick(&vid_bitsperpixel, com_argv[i+1]);
994 Con_Print("Starting video system\n");
995 success = VID_Mode(vid_fullscreen.integer, vid_width.integer, vid_height.integer, vid_bitsperpixel.integer);
998 Con_Print("Desired video mode fail, trying fallbacks...\n");
999 if (!success && vid_bitsperpixel.integer > 16)
1000 success = VID_Mode(vid_fullscreen.integer, vid_width.integer, vid_height.integer, 16);
1001 if (!success && (vid_width.integer > 640 || vid_height.integer > 480))
1002 success = VID_Mode(vid_fullscreen.integer, 640, 480, 16);
1003 if (!success && vid_fullscreen.integer)
1004 success = VID_Mode(false, 640, 480, 16);
1006 Sys_Error("Video modes failed");