/* vid_common_gl.c Common OpenGL video driver functions Copyright (C) 1996-1997 Id Software, Inc. Copyright (C) 2000 Marcus Sundberg [mackan@stacken.kth.se] This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to: Free Software Foundation, Inc. 59 Temple Place - Suite 330 Boston, MA 02111-1307, USA */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #ifdef HAVE_MATH_H # include #endif #ifdef HAVE_STRING_H # include #endif #ifdef HAVE_STRINGS_H # include #endif #include "QF/cvar.h" #include "QF/qargs.h" #include "QF/quakefs.h" #include "QF/sys.h" #include "QF/va.h" #include "QF/vid.h" #include "QF/GL/defines.h" #include "QF/GL/extensions.h" #include "QF/GL/funcs.h" #include "QF/GL/qf_rmain.h" #include "QF/GL/qf_textures.h" #include "QF/GL/qf_vid.h" #include "compat.h" #include "d_iface.h" #include "r_internal.h" #define WARP_WIDTH 320 #define WARP_HEIGHT 200 unsigned char gl_15to8table[65536]; QF_glActiveTexture qglActiveTexture = NULL; QF_glMultiTexCoord2f qglMultiTexCoord2f = NULL; QF_glMultiTexCoord2fv qglMultiTexCoord2fv = NULL; const char *gl_extensions; const char *gl_renderer; const char *gl_vendor; const char *gl_version; int gl_major; int gl_minor; int gl_release_number; static int gl_bgra_capable; int gl_use_bgra; int gl_va_capable; static int driver_vaelements; int vaelements; int gl_filter_min = GL_LINEAR_MIPMAP_LINEAR; int gl_filter_max = GL_LINEAR; float gldepthmin, gldepthmax; // Multitexture bool gl_mtex_capable = false; static int gl_mtex_tmus = 0; GLenum gl_mtex_enum; int gl_mtex_active_tmus = 0; bool gl_mtex_fullbright = false; // Combine bool gl_combine_capable = false; int lm_src_blend, lm_dest_blend; float gl_rgb_scale = 1.0; QF_glColorTableEXT qglColorTableEXT = NULL; bool gl_feature_mach64 = false; // GL_EXT_texture_filter_anisotropic bool gl_Anisotropy; static float aniso_max; float gl_aniso; // GL_ATI_pn_triangles static bool TruForm; static int tess_max; int gl_tess; // GL_LIGHT int gl_max_lights; float gl_anisotropy; static cvar_t gl_anisotropy_cvar = { .name = "gl_anisotropy", .description = 0, .default_value = "1.0", .flags = CVAR_NONE, .value = { .type = &cexpr_float, .value = &gl_anisotropy }, }; int gl_fb_bmodels; static cvar_t gl_fb_bmodels_cvar = { .name = "gl_fb_bmodels", .description = "Toggles fullbright color support for bmodels", .default_value = "1", .flags = CVAR_ARCHIVE, .value = { .type = &cexpr_int, .value = &gl_fb_bmodels }, }; int gl_finish; static cvar_t gl_finish_cvar = { .name = "gl_finish", .description = "wait for rendering to finish", .default_value = "1", .flags = CVAR_ARCHIVE, .value = { .type = &cexpr_int, .value = &gl_finish }, }; int gl_max_size; static cvar_t gl_max_size_cvar = { .name = "gl_max_size", .description = "Texture dimension", .default_value = "0", .flags = CVAR_NONE, .value = { .type = &cexpr_int, .value = &gl_max_size }, }; int gl_multitexture; static cvar_t gl_multitexture_cvar = { .name = "gl_multitexture", .description = "Use multitexture when available.", .default_value = "1", .flags = CVAR_ARCHIVE, .value = { .type = &cexpr_int, .value = &gl_multitexture }, }; int gl_tessellate; static cvar_t gl_tessellate_cvar = { .name = "gl_tessellate", .description = 0, .default_value = "0", .flags = CVAR_NONE, .value = { .type = &cexpr_int, .value = &gl_tessellate }, }; int gl_textures_bgra; static cvar_t gl_textures_bgra_cvar = { .name = "gl_textures_bgra", .description = "If set to 1, try to use BGR & BGRA textures instead of RGB & RGBA.", .default_value = "0", .flags = CVAR_ROM, .value = { .type = &cexpr_int, .value = &gl_textures_bgra }, }; int gl_vaelements_max; static cvar_t gl_vaelements_max_cvar = { .name = "gl_vaelements_max", .description = "Limit the vertex array size for buggy drivers. 0 (default) uses " "driver provided limit, -1 disables use of vertex arrays.", .default_value = "0", .flags = CVAR_ROM, .value = { .type = &cexpr_int, .value = &gl_vaelements_max }, }; int gl_vector_light; static cvar_t gl_vector_light_cvar = { .name = "gl_vector_light", .description = "Enable use of GL vector lighting. 0 = flat lighting.", .default_value = "1", .flags = CVAR_NONE, .value = { .type = &cexpr_int, .value = &gl_vector_light }, }; int gl_screenshot_byte_swap; static cvar_t gl_screenshot_byte_swap_cvar = { .name = "gl_screenshot_byte_swap", .description = "Swap the bytes for gl screenshots. Needed if you get screenshots with" " red and blue swapped.", .default_value = "0", .flags = CVAR_NONE, .value = { .type = &cexpr_int, .value = &gl_screenshot_byte_swap }, }; int gl_affinemodels; static cvar_t gl_affinemodels_cvar = { .name = "gl_affinemodels", .description = "Makes texture rendering quality better if set to 1", .default_value = "0", .flags = CVAR_ARCHIVE, .value = { .type = &cexpr_int, .value = &gl_affinemodels }, }; int gl_clear; static cvar_t gl_clear_cvar = { .name = "gl_clear", .description = "Set to 1 to make background black. Useful for removing HOM effect", .default_value = "0", .flags = CVAR_NONE, .value = { .type = &cexpr_int, .value = &gl_clear }, }; float gl_conspin; static cvar_t gl_conspin_cvar = { .name = "gl_conspin", .description = "speed at which the console spins", .default_value = "0", .flags = CVAR_ARCHIVE, .value = { .type = &cexpr_float, .value = &gl_conspin }, }; int gl_constretch; static cvar_t gl_constretch_cvar = { .name = "gl_constretch", .description = "toggle console between slide and stretch", .default_value = "0", .flags = CVAR_ARCHIVE, .value = { .type = &cexpr_int, .value = &gl_constretch }, }; int gl_dlight_polyblend; static cvar_t gl_dlight_polyblend_cvar = { .name = "gl_dlight_polyblend", .description = "Set to 1 to use a dynamic light effect faster on GL", .default_value = "0", .flags = CVAR_ARCHIVE, .value = { .type = &cexpr_int, .value = &gl_dlight_polyblend }, }; int gl_dlight_smooth; static cvar_t gl_dlight_smooth_cvar = { .name = "gl_dlight_smooth", .description = "Smooth dynamic vertex lighting", .default_value = "1", .flags = CVAR_ARCHIVE, .value = { .type = &cexpr_int, .value = &gl_dlight_smooth }, }; int gl_fb_models; static cvar_t gl_fb_models_cvar = { .name = "gl_fb_models", .description = "Toggles fullbright color support for models", .default_value = "1", .flags = CVAR_ARCHIVE, .value = { .type = &cexpr_int, .value = &gl_fb_models }, }; int gl_keeptjunctions; static cvar_t gl_keeptjunctions_cvar = { .name = "gl_keeptjunctions", .description = "Set to 0 to turn off colinear vertexes upon level load.", .default_value = "1", .flags = CVAR_ARCHIVE, .value = { .type = &cexpr_int, .value = &gl_keeptjunctions }, }; int gl_lerp_anim; static cvar_t gl_lerp_anim_cvar = { .name = "gl_lerp_anim", .description = "Toggles model animation interpolation", .default_value = "1", .flags = CVAR_ARCHIVE, .value = { .type = &cexpr_int, .value = &gl_lerp_anim }, }; int gl_lightmap_align; static cvar_t gl_lightmap_align_cvar = { .name = "gl_lightmap_align", .description = "Workaround for nvidia slow path. Set to 4 or 16 if you have an nvidia" " 3d accelerator, set to 1 otherwise.", .default_value = "1", .flags = CVAR_NONE, .value = { .type = &cexpr_int, .value = &gl_lightmap_align }, }; int gl_lightmap_subimage; static cvar_t gl_lightmap_subimage_cvar = { .name = "gl_lightmap_subimage", .description = "Lightmap Update method. Default 2 updates a minimum 'dirty rectangle'" " around the area changed. 1 updates every line that changed. 0 " "updates the entire lightmap.", .default_value = "1", .flags = CVAR_NONE, .value = { .type = &cexpr_int, .value = &gl_lightmap_subimage }, }; int gl_nocolors; static cvar_t gl_nocolors_cvar = { .name = "gl_nocolors", .description = "Set to 1, turns off all player colors", .default_value = "0", .flags = CVAR_NONE, .value = { .type = &cexpr_int, .value = &gl_nocolors }, }; int gl_overbright; static cvar_t gl_overbright_cvar = { .name = "gl_overbright", .description = "Darken lightmaps so that dynamic lights can be overbright. 1 = 0.75 " "brightness, 2 = 0.5 brightness.", .default_value = "0", .flags = CVAR_NONE, .value = { .type = &cexpr_int, .value = &gl_overbright }, }; int gl_particle_mip; static cvar_t gl_particle_mip_cvar = { .name = "gl_particle_mip", .description = "Toggles particle texture mipmapping.", .default_value = "0", .flags = CVAR_NONE, .value = { .type = &cexpr_int, .value = &gl_particle_mip }, }; int gl_particle_size; static cvar_t gl_particle_size_cvar = { .name = "gl_particle_size", .description = "Vertical and horizontal size of particle textures as a power of 2. " "Default is 5 (32 texel square).", .default_value = "5", .flags = CVAR_NONE, .value = { .type = &cexpr_int, .value = &gl_particle_size }, }; int gl_picmip; static cvar_t gl_picmip_cvar = { .name = "gl_picmip", .description = "Dimensions of textures. 0 is normal, 1 is half, 2 is 1/4", .default_value = "0", .flags = CVAR_NONE, .value = { .type = &cexpr_int, .value = &gl_picmip }, }; int gl_playermip; static cvar_t gl_playermip_cvar = { .name = "gl_playermip", .description = "Detail of player skins. 0 best, 4 worst.", .default_value = "0", .flags = CVAR_NONE, .value = { .type = &cexpr_int, .value = &gl_playermip }, }; int gl_reporttjunctions; static cvar_t gl_reporttjunctions_cvar = { .name = "gl_reporttjunctions", .description = "None", .default_value = "0", .flags = CVAR_NONE, .value = { .type = &cexpr_int, .value = &gl_reporttjunctions }, }; int gl_sky_clip; static cvar_t gl_sky_clip_cvar = { .name = "gl_sky_clip", .description = "controls amount of sky overdraw", .default_value = "2", .flags = CVAR_ARCHIVE, .value = { .type = &cexpr_int, .value = &gl_sky_clip }, }; int gl_sky_debug; static cvar_t gl_sky_debug_cvar = { .name = "gl_sky_debug", .description = "debugging `info' for sky clipping", .default_value = "0", .flags = CVAR_NONE, .value = { .type = &cexpr_int, .value = &gl_sky_debug }, }; int gl_sky_divide; static cvar_t gl_sky_divide_cvar = { .name = "gl_sky_divide", .description = "subdivide sky polys", .default_value = "1", .flags = CVAR_ARCHIVE, .value = { .type = &cexpr_int, .value = &gl_sky_divide }, }; int gl_sky_multipass; static cvar_t gl_sky_multipass_cvar = { .name = "gl_sky_multipass", .description = "controls whether the skydome is single or double pass", .default_value = "1", .flags = CVAR_ARCHIVE, .value = { .type = &cexpr_int, .value = &gl_sky_multipass }, }; int gl_texsort; static cvar_t gl_texsort_cvar = { .name = "gl_texsort", .description = "None", .default_value = "1", .flags = CVAR_NONE, .value = { .type = &cexpr_int, .value = &gl_texsort }, }; int gl_triplebuffer; static cvar_t gl_triplebuffer_cvar = { .name = "gl_triplebuffer", .description = "Set to 1 by default. Fixes status bar flicker on some hardware", .default_value = "1", .flags = CVAR_ARCHIVE, .value = { .type = &cexpr_int, .value = &gl_triplebuffer }, }; static int vid_use8bit; static cvar_t vid_use8bit_cvar = { .name = "vid_use8bit", .description = "Use 8-bit shared palettes.", .default_value = "0", .flags = CVAR_ROM, .value = { .type = &cexpr_int, .value = &vid_use8bit }, }; static void gl_triplebuffer_f (void *data, const cvar_t *cvar) { vid.numpages = gl_triplebuffer ? 3 : 2; } static void gl_max_size_f (void *data, const cvar_t *cvar) { GLint texSize; if (!cvar) return; // Check driver's max texture size qfglGetIntegerv (GL_MAX_TEXTURE_SIZE, &texSize); if (gl_max_size < 1) { gl_max_size = texSize; } else { gl_max_size = bound (1, gl_max_size, texSize); } } static void gl_textures_bgra_f (void *data, const cvar_t *cvar) { if (!cvar) return; if (gl_textures_bgra && gl_bgra_capable) { gl_use_bgra = 1; } else { gl_use_bgra = 0; } } static void gl_fb_bmodels_f (void *data, const cvar_t *cvar) { if (!cvar) return; if (gl_fb_bmodels && gl_mtex_tmus >= 3) { gl_mtex_fullbright = true; } else { gl_mtex_fullbright = false; } } void gl_multitexture_f (void *data, const cvar_t *cvar) { if (gl_multitexture && gl_mtex_capable) { gl_mtex_active_tmus = gl_mtex_tmus; if (gl_fb_bmodels) { if (gl_fb_bmodels) { if (gl_mtex_tmus >= 3) { gl_mtex_fullbright = true; qglActiveTexture (gl_mtex_enum + 2); qfglEnable (GL_TEXTURE_2D); qfglTexEnvf (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL); qfglDisable (GL_TEXTURE_2D); } else { gl_mtex_fullbright = false; Sys_MaskPrintf (SYS_vid, "Not enough TMUs for BSP fullbrights.\n"); } } } else { gl_mtex_fullbright = false; } // Lightmaps qglActiveTexture (gl_mtex_enum + 1); qfglEnable (GL_TEXTURE_2D); if (gl_overbright) { if (gl_combine_capable && gl_overbright) { qfglTexEnvf (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE); qfglTexEnvf (GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_MODULATE); qfglTexEnvf (GL_TEXTURE_ENV, GL_RGB_SCALE, gl_rgb_scale); } else { qfglTexEnvf (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); } } else { qfglTexEnvf (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); } qfglDisable (GL_TEXTURE_2D); // Base Texture qglActiveTexture (gl_mtex_enum + 0); } else { gl_mtex_active_tmus = 0; gl_mtex_fullbright = false; } } static void gl_screenshot_byte_swap_f (void *data, const cvar_t *cvar) { if (cvar) qfglPixelStorei (GL_PACK_SWAP_BYTES, gl_screenshot_byte_swap ? GL_TRUE : GL_FALSE); } static void gl_anisotropy_f (void *data, const cvar_t *var) { if (gl_Anisotropy) { if (var) gl_aniso = (bound (1.0, gl_anisotropy, aniso_max)); else gl_aniso = 1.0; } else { gl_aniso = 1.0; if (var) Sys_MaskPrintf (SYS_vid, "Anisotropy (GL_EXT_texture_filter_anisotropic) " "is not supported by your hardware and/or " "drivers.\n"); } } static void gl_tessellate_f (void *data, const cvar_t *var) { if (TruForm) { if (var) gl_tess = (bound (0, gl_tessellate, tess_max)); else gl_tess = 0; qfglPNTrianglesiATI (GL_PN_TRIANGLES_TESSELATION_LEVEL_ATI, gl_tess); } else { gl_tess = 0; if (var) Sys_MaskPrintf (SYS_vid, "TruForm (GL_ATI_pn_triangles) is not supported " "by your hardware and/or drivers.\n"); } } static void gl_vaelements_max_f (void *data, const cvar_t *cvar) { if (gl_vaelements_max) vaelements = min (gl_vaelements_max, driver_vaelements); else vaelements = driver_vaelements; } static void gl_sky_divide_f (void *data, const cvar_t *cvar) { mod_sky_divide = gl_sky_divide; } static void GL_Common_Init_Cvars (void) { Cvar_Register (&vid_use8bit_cvar, 0, 0); Cvar_Register (&gl_textures_bgra_cvar, gl_textures_bgra_f, 0); Cvar_Register (&gl_fb_bmodels_cvar, gl_fb_bmodels_f, 0); Cvar_Register (&gl_finish_cvar, 0, 0); Cvar_Register (&gl_max_size_cvar, gl_max_size_f, 0); Cvar_Register (&gl_multitexture_cvar, gl_multitexture_f, 0); Cvar_Register (&gl_screenshot_byte_swap_cvar, gl_screenshot_byte_swap_f, 0); Cvar_Register (&gl_anisotropy_cvar, gl_anisotropy_f, 0); gl_anisotropy_cvar.description = nva ( "Specifies degree of anisotropy, from 1.0 to %f. Higher anisotropy " "means less distortion of textures at shallow angles to the viewer.", aniso_max); Cvar_Register (&gl_tessellate_cvar, gl_tessellate_f, 0); gl_tessellate_cvar.description = nva ( "Specifies tessellation level from 0 to %i. Higher tessellation level " "means more triangles.", tess_max); Cvar_Register (&gl_vaelements_max_cvar, gl_vaelements_max_f, 0); Cvar_Register (&gl_vector_light_cvar, 0, 0); Cvar_Register (&gl_affinemodels_cvar, 0, 0); Cvar_Register (&gl_clear_cvar, 0, 0); Cvar_Register (&gl_conspin_cvar, 0, 0); Cvar_Register (&gl_constretch_cvar, 0, 0); Cvar_Register (&gl_dlight_polyblend_cvar, 0, 0); Cvar_Register (&gl_dlight_smooth_cvar, 0, 0); Cvar_Register (&gl_fb_models_cvar, 0, 0); Cvar_Register (&gl_keeptjunctions_cvar, 0, 0); Cvar_Register (&gl_lerp_anim_cvar, 0, 0); Cvar_Register (&gl_lightmap_align_cvar, 0, 0); Cvar_Register (&gl_lightmap_subimage_cvar, 0, 0); Cvar_Register (&gl_nocolors_cvar, 0, 0); Cvar_Register (&gl_overbright_cvar, gl_overbright_f, 0); Cvar_Register (&gl_particle_mip_cvar, 0, 0); Cvar_Register (&gl_particle_size_cvar, 0, 0); Cvar_Register (&gl_picmip_cvar, 0, 0); Cvar_Register (&gl_playermip_cvar, 0, 0); Cvar_Register (&gl_reporttjunctions_cvar, 0, 0); Cvar_Register (&gl_sky_clip_cvar, 0, 0); Cvar_Register (&gl_sky_debug_cvar, 0, 0); Cvar_Register (&gl_sky_divide_cvar, gl_sky_divide_f, 0); Cvar_Register (&gl_sky_multipass_cvar, 0, 0); Cvar_Register (&gl_texsort_cvar, 0, 0); Cvar_Register (&gl_triplebuffer_cvar, gl_triplebuffer_f, 0); Cvar_AddListener (&gl_overbright_cvar, gl_multitexture_f, 0); } static void CheckGLVersionString (void) { gl_version = (char *) qfglGetString (GL_VERSION); if (sscanf (gl_version, "%d.%d", &gl_major, &gl_minor) == 2) { gl_release_number = 0; if (gl_major >= 1) { if (gl_minor >= 1) { gl_va_capable = true; } else { gl_va_capable = false; } } } else if (sscanf (gl_version, "%d.%d.%d", &gl_major, &gl_minor, &gl_release_number) == 3) { if (gl_major >= 1) { if (gl_minor >= 1) { gl_va_capable = true; } else { gl_va_capable = false; } } } else { Sys_Error ("Malformed OpenGL version string!"); } Sys_MaskPrintf (SYS_vid, "GL_VERSION: %s\n", gl_version); gl_vendor = (char *) qfglGetString (GL_VENDOR); Sys_MaskPrintf (SYS_vid, "GL_VENDOR: %s\n", gl_vendor); gl_renderer = (char *) qfglGetString (GL_RENDERER); Sys_MaskPrintf (SYS_vid, "GL_RENDERER: %s\n", gl_renderer); gl_extensions = (char *) qfglGetString (GL_EXTENSIONS); Sys_MaskPrintf (SYS_vid, "GL_EXTENSIONS: %s\n", gl_extensions); if (strstr (gl_renderer, "Mesa DRI Mach64")) gl_feature_mach64 = true; } static void CheckAnisotropyExtensions (void) { if (QFGL_ExtensionPresent ("GL_EXT_texture_filter_anisotropic")) { gl_Anisotropy = true; qfglGetFloatv (GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &aniso_max); } else { gl_Anisotropy = false; aniso_max = 1.0; } } static void CheckBGRAExtensions (void) { if (gl_major > 1 || (gl_major == 1 && gl_minor >= 3)) { gl_bgra_capable = true; } else if (QFGL_ExtensionPresent ("GL_EXT_bgra")) { gl_bgra_capable = true; } else { gl_bgra_capable = false; } } static void CheckCombineExtensions (void) { if (gl_major >= 1 && gl_minor >= 3) { gl_combine_capable = true; Sys_MaskPrintf (SYS_vid, "COMBINE active, multitextured doublebright " "enabled.\n"); } else if (QFGL_ExtensionPresent ("GL_ARB_texture_env_combine")) { gl_combine_capable = true; Sys_MaskPrintf (SYS_vid, "COMBINE_ARB active, multitextured " "doublebright enabled.\n"); } else { gl_combine_capable = false; } } /* CheckMultiTextureExtensions Check for ARB multitexture support */ static void CheckMultiTextureExtensions (void) { Sys_MaskPrintf (SYS_vid, "Checking for multitexture: "); if (COM_CheckParm ("-nomtex")) { Sys_MaskPrintf (SYS_vid, "disabled.\n"); return; } if (gl_major >= 1 && gl_minor >= 3) { qfglGetIntegerv (GL_MAX_TEXTURE_UNITS, &gl_mtex_tmus); if (gl_mtex_tmus >= 2) { Sys_MaskPrintf (SYS_vid, "enabled, %d TMUs.\n", gl_mtex_tmus); qglMultiTexCoord2f = QFGL_ExtensionAddress ("glMultiTexCoord2f"); qglMultiTexCoord2fv = QFGL_ExtensionAddress ("glMultiTexCoord2fv"); qglActiveTexture = QFGL_ExtensionAddress ("glActiveTexture"); gl_mtex_enum = GL_TEXTURE0; if (qglMultiTexCoord2f && gl_mtex_enum) gl_mtex_capable = true; else Sys_MaskPrintf (SYS_vid, "Multitexture disabled, could not " "find required functions\n"); } else { Sys_MaskPrintf (SYS_vid, "Multitexture disabled, not enough TMUs.\n"); } } else if (QFGL_ExtensionPresent ("GL_ARB_multitexture")) { qfglGetIntegerv (GL_MAX_TEXTURE_UNITS_ARB, &gl_mtex_tmus); if (gl_mtex_tmus >= 2) { Sys_MaskPrintf (SYS_vid, "enabled, %d TMUs.\n", gl_mtex_tmus); qglMultiTexCoord2f = QFGL_ExtensionAddress ("glMultiTexCoord2fARB"); qglMultiTexCoord2fv = QFGL_ExtensionAddress ("glMultiTexCoord2fvARB"); qglActiveTexture = QFGL_ExtensionAddress ("glActiveTextureARB"); gl_mtex_enum = GL_TEXTURE0_ARB; if (qglMultiTexCoord2f && gl_mtex_enum) gl_mtex_capable = true; else Sys_MaskPrintf (SYS_vid, "Multitexture disabled, could not " "find required functions\n"); } else { Sys_MaskPrintf (SYS_vid, "Multitexture disabled, not enough TMUs.\n"); } } else { Sys_MaskPrintf (SYS_vid, "not found.\n"); } } static void CheckTruFormExtensions (void) { if (QFGL_ExtensionPresent ("GL_ATI_pn_triangles")) { TruForm = true; qfglGetIntegerv (GL_MAX_PN_TRIANGLES_TESSELATION_LEVEL_ATI, &tess_max); qfglPNTrianglesiATI (GL_PN_TRIANGLES_NORMAL_MODE_ATI, GL_PN_TRIANGLES_NORMAL_MODE_QUADRATIC_ATI); qfglPNTrianglesiATI (GL_PN_TRIANGLES_POINT_MODE_ATI, GL_PN_TRIANGLES_POINT_MODE_CUBIC_ATI); } else { TruForm = false; gl_tess = 0; tess_max = 0; } } static void CheckVertexArraySize (void) { qfglGetIntegerv (GL_MAX_ELEMENTS_VERTICES, &driver_vaelements); if (driver_vaelements > 65536) driver_vaelements = 65536; vaelements = driver_vaelements; // qfglGetIntegerv (MAX_ELEMENTS_INDICES, *vaindices); } static void CheckLights (void) { int i; float dark[4] = {0.0, 0.0, 0.0, 1.0}, ambient[4] = {0.2, 0.2, 0.2, 1.0}, diffuse[4] = {0.7, 0.7, 0.7, 1.0}, specular[4] = {0.1, 0.1, 0.1, 1.0}; qfglGetIntegerv (GL_MAX_LIGHTS, &gl_max_lights); Sys_MaskPrintf (SYS_vid, "Max GL Lights %d.\n", gl_max_lights); qfglEnable (GL_LIGHTING); qfglLightModelfv (GL_LIGHT_MODEL_AMBIENT, dark); qfglLightModelf (GL_LIGHT_MODEL_TWO_SIDE, 0.0); for (i = 0; i < gl_max_lights; i++) { qfglEnable (GL_LIGHT0 + i); qfglLightf (GL_LIGHT0 + i, GL_CONSTANT_ATTENUATION, 0.5); qfglDisable (GL_LIGHT0 + i); } // Set up material defaults qfglMaterialfv (GL_FRONT, GL_AMBIENT, ambient); qfglMaterialfv (GL_FRONT, GL_DIFFUSE, diffuse); qfglMaterialfv (GL_FRONT, GL_SPECULAR, specular); qfglMaterialf (GL_FRONT, GL_SHININESS, 1.0); qfglDisable (GL_LIGHTING); } static void Tdfx_Init8bitPalette (void) { // Check for 8bit Extensions and initialize them. int i; if (vr_data.vid->is8bit) return; if (QFGL_ExtensionPresent ("3DFX_set_global_palette")) { char *oldpal; GLubyte table[256][4]; QF_gl3DfxSetPaletteEXT qgl3DfxSetPaletteEXT = NULL; if (!(qgl3DfxSetPaletteEXT = QFGL_ExtensionAddress ("gl3DfxSetPaletteEXT"))) { Sys_MaskPrintf (SYS_vid, "3DFX_set_global_palette not found.\n"); return; } Sys_MaskPrintf (SYS_vid, "3DFX_set_global_palette.\n"); oldpal = (char *) d_8to24table; // d_8to24table3dfx; for (i = 0; i < 256; i++) { table[i][2] = *oldpal++; table[i][1] = *oldpal++; table[i][0] = *oldpal++; table[i][3] = 255; oldpal++; } qfglEnable (GL_SHARED_TEXTURE_PALETTE_EXT); qgl3DfxSetPaletteEXT ((GLuint *) table); vr_data.vid->is8bit = true; } else { Sys_MaskPrintf (SYS_vid, "\n 3DFX_set_global_palette not found."); } } /* The GL_EXT_shared_texture_palette seems like an idea which is /almost/ a good idea, but seems to be severely broken with many drivers, as such it is disabled. It should be noted, that a palette object extension as suggested by the GL_EXT_shared_texture_palette spec might be a very good idea in general. */ static void Shared_Init8bitPalette (void) { int i; GLubyte thePalette[256 * 3]; GLubyte *oldPalette, *newPalette; if (vr_data.vid->is8bit) return; if (QFGL_ExtensionPresent ("GL_EXT_shared_texture_palette")) { if (!(qglColorTableEXT = QFGL_ExtensionAddress ("glColorTableEXT"))) { Sys_MaskPrintf (SYS_vid, "glColorTableEXT not found.\n"); return; } Sys_MaskPrintf (SYS_vid, "GL_EXT_shared_texture_palette\n"); qfglEnable (GL_SHARED_TEXTURE_PALETTE_EXT); oldPalette = (GLubyte *) d_8to24table; // d_8to24table3dfx; newPalette = thePalette; for (i = 0; i < 256; i++) { *newPalette++ = *oldPalette++; *newPalette++ = *oldPalette++; *newPalette++ = *oldPalette++; oldPalette++; } qglColorTableEXT (GL_SHARED_TEXTURE_PALETTE_EXT, GL_RGB, 256, GL_RGB, GL_UNSIGNED_BYTE, (GLvoid *) thePalette); vr_data.vid->is8bit = true; } else { Sys_MaskPrintf (SYS_vid, "\n GL_EXT_shared_texture_palette not found."); } } static void VID_Init8bitPalette (void) { Sys_MaskPrintf (SYS_vid, "Checking for 8-bit extension: "); if (vid_use8bit) { Tdfx_Init8bitPalette (); Shared_Init8bitPalette (); if (!vr_data.vid->is8bit) Sys_MaskPrintf (SYS_vid, "\n 8-bit extension not found.\n"); } else { Sys_MaskPrintf (SYS_vid, "disabled.\n"); } } void GL_SetPalette (void *data, const byte *palette) { const byte *pal; char s[255]; float dist, bestdist; int r1, g1, b1, k; unsigned int r, g, b, v; unsigned short i; unsigned int *table; static bool palflag = false; QFile *f; static int inited_8 = 0; if (!inited_8) { inited_8 = 1; // Check for 8-bit extension and initialize if present VID_Init8bitPalette (); } // 8 8 8 encoding Sys_MaskPrintf (SYS_vid, "Converting 8to24\n"); pal = palette; table = d_8to24table; for (i = 0; i < 255; i++) { // used to be i<256, see d_8to24table below r = pal[0]; g = pal[1]; b = pal[2]; pal += 3; #ifdef WORDS_BIGENDIAN v = (255 << 0) + (r << 24) + (g << 16) + (b << 8); #else v = (255 << 24) + (r << 0) + (g << 8) + (b << 16); #endif *table++ = v; } d_8to24table[255] = 0; // 255 is transparent // JACK: 3D distance calcs - k is last closest, l is the distance. if (palflag) return; palflag = true; f = QFS_FOpenFile ("glquake/15to8.pal"); if (f) { Qread (f, gl_15to8table, 1 << 15); Qclose (f); } else { for (i = 0; i < (1 << 15); i++) { /* Maps 000000000000000 000000000011111 = Red = 0x001F 000001111100000 = Blue = 0x03E0 111110000000000 = Grn = 0x7C00 */ r = ((i & 0x1F) << 3) + 4; g = ((i & 0x03E0) >> 2) + 4; b = ((i & 0x7C00) >> 7) + 4; pal = (unsigned char *) d_8to24table; for (v = 0, k = 0, bestdist = 10000.0; v < 256; v++, pal += 4) { r1 = (int) r - (int) pal[0]; g1 = (int) g - (int) pal[1]; b1 = (int) b - (int) pal[2]; dist = sqrt (((r1 * r1) + (g1 * g1) + (b1 * b1))); if (dist < bestdist) { k = v; bestdist = dist; } } gl_15to8table[i] = k; } snprintf (s, sizeof (s), "%s/glquake/15to8.pal", qfs_gamedir->dir.def); if ((f = QFS_WOpen (s, 0)) != NULL) { Qwrite (f, gl_15to8table, 1 << 15); Qclose (f); } } } void GL_Init_Common (void) { GLF_FindFunctions (); CheckGLVersionString (); CheckAnisotropyExtensions (); CheckMultiTextureExtensions (); CheckCombineExtensions (); CheckBGRAExtensions (); CheckTruFormExtensions (); CheckVertexArraySize (); CheckLights (); GL_Common_Init_Cvars (); GL_TextureInit (); qfglClearColor (0, 0, 0, 0); qfglEnable (GL_TEXTURE_2D); qfglFrontFace (GL_CW); qfglCullFace (GL_BACK); qfglPolygonMode (GL_FRONT_AND_BACK, GL_FILL); qfglShadeModel (GL_FLAT); qfglEnable (GL_BLEND); qfglBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); qfglTexEnvf (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); qfglTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, gl_filter_min); qfglTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, gl_filter_max); if (gl_Anisotropy) qfglTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, gl_aniso); qfglTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); qfglTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); }