mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-30 16:10:53 +00:00
756 lines
19 KiB
C
756 lines
19 KiB
C
/*
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vid_common_gl.c
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Common OpenGL video driver functions
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Copyright (C) 1996-1997 Id Software, Inc.
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Copyright (C) 2000 Marcus Sundberg [mackan@stacken.kth.se]
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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static __attribute__ ((used)) const char rcsid[] =
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"$Id$";
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#ifdef HAVE_MATH_H
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# include <math.h>
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#endif
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif
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#include "QF/cvar.h"
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#include "QF/input.h"
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#include "QF/qargs.h"
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#include "QF/quakefs.h"
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#include "QF/sys.h"
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#include "QF/va.h"
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#include "QF/vid.h"
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#include "QF/GL/defines.h"
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#include "QF/GL/extensions.h"
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#include "QF/GL/funcs.h"
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#include "QF/GL/qf_vid.h"
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#include "compat.h"
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#include "d_iface.h"
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#include "r_cvar.h"
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#include "sbar.h"
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#define WARP_WIDTH 320
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#define WARP_HEIGHT 200
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VISIBLE unsigned char d_15to8table[65536];
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VISIBLE QF_glActiveTexture qglActiveTexture = NULL;
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VISIBLE QF_glMultiTexCoord2f qglMultiTexCoord2f = NULL;
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VISIBLE QF_glMultiTexCoord2fv qglMultiTexCoord2fv = NULL;
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VISIBLE const char *gl_extensions;
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VISIBLE const char *gl_renderer;
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VISIBLE const char *gl_vendor;
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VISIBLE const char *gl_version;
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VISIBLE int gl_major;
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VISIBLE int gl_minor;
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VISIBLE int gl_release_number;
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static int gl_bgra_capable;
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VISIBLE int use_bgra;
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VISIBLE int gl_va_capable;
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static int driver_vaelements;
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VISIBLE int vaelements;
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VISIBLE int texture_extension_number = 1;
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VISIBLE int gl_filter_min = GL_LINEAR_MIPMAP_LINEAR;
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VISIBLE int gl_filter_max = GL_LINEAR;
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VISIBLE float gldepthmin, gldepthmax;
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// Multitexture
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VISIBLE qboolean gl_mtex_capable = false;
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static int gl_mtex_tmus = 0;
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VISIBLE GLenum gl_mtex_enum;
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VISIBLE int gl_mtex_active_tmus = 0;
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VISIBLE qboolean gl_mtex_fullbright = false;
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// Combine
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VISIBLE qboolean gl_combine_capable = false;
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VISIBLE int lm_src_blend, lm_dest_blend;
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VISIBLE float rgb_scale = 1.0;
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VISIBLE QF_glColorTableEXT qglColorTableEXT = NULL;
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VISIBLE qboolean is8bit = false;
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VISIBLE qboolean gl_feature_mach64 = false;
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// GL_EXT_texture_filter_anisotropic
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VISIBLE qboolean Anisotropy;
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static float aniso_max;
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VISIBLE float aniso;
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// GL_ATI_pn_triangles
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static qboolean TruForm;
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static int tess_max;
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VISIBLE int tess;
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// GL_LIGHT
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VISIBLE int gl_max_lights;
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VISIBLE cvar_t *gl_anisotropy;
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VISIBLE cvar_t *gl_doublebright;
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VISIBLE cvar_t *gl_fb_bmodels;
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VISIBLE cvar_t *gl_finish;
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VISIBLE cvar_t *gl_max_size;
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VISIBLE cvar_t *gl_multitexture;
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VISIBLE cvar_t *gl_tessellate;
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VISIBLE cvar_t *gl_textures_bgra;
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VISIBLE cvar_t *gl_vaelements_max;
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VISIBLE cvar_t *gl_vector_light;
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VISIBLE cvar_t *gl_screenshot_byte_swap;
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VISIBLE cvar_t *vid_mode;
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VISIBLE cvar_t *vid_use8bit;
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void gl_multitexture_f (cvar_t *var);
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static void
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gl_max_size_f (cvar_t *var)
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{
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GLint texSize;
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if (!var)
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return;
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// Check driver's max texture size
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qfglGetIntegerv (GL_MAX_TEXTURE_SIZE, &texSize);
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if (var->int_val < 1) {
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Cvar_SetValue (var, texSize);
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} else {
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Cvar_SetValue (var, bound (1, var->int_val, texSize));
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}
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}
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static void
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gl_textures_bgra_f (cvar_t *var)
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{
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if (!var)
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return;
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if (var->int_val && gl_bgra_capable) {
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use_bgra = 1;
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} else {
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use_bgra = 0;
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}
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}
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static void
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gl_fb_bmodels_f (cvar_t *var)
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{
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if (!var)
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return;
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if (var->int_val && gl_mtex_tmus >= 3) {
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gl_mtex_fullbright = true;
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} else {
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gl_mtex_fullbright = false;
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}
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}
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VISIBLE void
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gl_multitexture_f (cvar_t *var)
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{
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if (!var)
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return;
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if (var->int_val && gl_mtex_capable) {
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gl_mtex_active_tmus = gl_mtex_tmus;
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if (gl_fb_bmodels) {
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if (gl_fb_bmodels->int_val) {
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if (gl_mtex_tmus >= 3) {
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gl_mtex_fullbright = true;
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qglActiveTexture (gl_mtex_enum + 2);
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qfglEnable (GL_TEXTURE_2D);
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qfglTexEnvf (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE,
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GL_DECAL);
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qfglDisable (GL_TEXTURE_2D);
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} else {
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gl_mtex_fullbright = false;
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Sys_MaskPrintf (SYS_VID,
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"Not enough TMUs for BSP fullbrights.\n");
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}
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}
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} else {
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gl_mtex_fullbright = false;
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}
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// Lightmaps
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qglActiveTexture (gl_mtex_enum + 1);
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qfglEnable (GL_TEXTURE_2D);
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if (gl_overbright) {
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if (gl_combine_capable && gl_overbright->int_val) {
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qfglTexEnvf (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE);
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qfglTexEnvf (GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_MODULATE);
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qfglTexEnvf (GL_TEXTURE_ENV, GL_RGB_SCALE, rgb_scale);
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} else {
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qfglTexEnvf (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
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}
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} else {
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qfglTexEnvf (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
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}
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qfglDisable (GL_TEXTURE_2D);
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// Base Texture
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qglActiveTexture (gl_mtex_enum + 0);
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} else {
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gl_mtex_active_tmus = 0;
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gl_mtex_fullbright = false;
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}
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}
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static void
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gl_screenshot_byte_swap_f (cvar_t *var)
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{
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if (var)
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qfglPixelStorei (GL_PACK_SWAP_BYTES,
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var->int_val ? GL_TRUE : GL_FALSE);
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}
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static void
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gl_anisotropy_f (cvar_t * var)
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{
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if (Anisotropy) {
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if (var)
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aniso = (bound (1.0, var->value, aniso_max));
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else
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aniso = 1.0;
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} else {
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aniso = 1.0;
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if (var)
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Sys_MaskPrintf (SYS_VID,
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"Anisotropy (GL_EXT_texture_filter_anisotropic) "
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"is not supported by your hardware and/or "
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"drivers.\n");
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}
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}
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static void
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gl_tessellate_f (cvar_t * var)
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{
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if (TruForm) {
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if (var)
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tess = (bound (0, var->int_val, tess_max));
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else
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tess = 0;
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qfglPNTrianglesiATI (GL_PN_TRIANGLES_TESSELATION_LEVEL_ATI, tess);
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} else {
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tess = 0;
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if (var)
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Sys_MaskPrintf (SYS_VID,
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"TruForm (GL_ATI_pn_triangles) is not supported "
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"by your hardware and/or drivers.\n");
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}
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}
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static void
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gl_vaelements_max_f (cvar_t *var)
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{
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if (var->int_val)
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vaelements = min (var->int_val, driver_vaelements);
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else
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vaelements = driver_vaelements;
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}
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static void
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GL_Common_Init_Cvars (void)
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{
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vid_use8bit = Cvar_Get ("vid_use8bit", "0", CVAR_ROM, NULL, "Use 8-bit "
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"shared palettes.");
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gl_textures_bgra = Cvar_Get ("gl_textures_bgra", "0", CVAR_ROM,
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gl_textures_bgra_f, "If set to 1, try to use "
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"BGR & BGRA textures instead of RGB & RGBA.");
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gl_fb_bmodels = Cvar_Get ("gl_fb_bmodels", "1", CVAR_ARCHIVE,
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gl_fb_bmodels_f, "Toggles fullbright color "
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"support for bmodels");
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gl_finish = Cvar_Get ("gl_finish", "1", CVAR_ARCHIVE, NULL,
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"wait for rendering to finish");
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gl_max_size = Cvar_Get ("gl_max_size", "0", CVAR_NONE, gl_max_size_f,
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"Texture dimension");
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gl_multitexture = Cvar_Get ("gl_multitexture", "1", CVAR_ARCHIVE,
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gl_multitexture_f, "Use multitexture when "
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"available.");
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gl_screenshot_byte_swap =
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Cvar_Get ("gl_screenshot_byte_swap", "0", CVAR_NONE,
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gl_screenshot_byte_swap_f, "Swap the bytes for gl "
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"screenshots. Needed if you get screenshots with red and "
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"blue swapped.");
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gl_anisotropy =
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Cvar_Get ("gl_anisotropy", "1.0", CVAR_NONE, gl_anisotropy_f,
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nva ("Specifies degree of anisotropy, from 1.0 to %f. "
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"Higher anisotropy means less distortion of textures "
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"at shallow angles to the viewer.", aniso_max));
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gl_tessellate =
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Cvar_Get ("gl_tessellate", "0", CVAR_NONE, gl_tessellate_f,
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nva ("Specifies tessellation level from 0 to %i. Higher "
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"tessellation level means more triangles.", tess_max));
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gl_vaelements_max = Cvar_Get ("gl_vaelements_max", "0", CVAR_ROM,
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gl_vaelements_max_f,
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"Limit the vertex array size for buggy "
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"drivers. 0 (default) uses driver provided "
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"limit, -1 disables use of vertex arrays.");
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gl_vector_light = Cvar_Get ("gl_vector_light", "1", CVAR_NONE, NULL,
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"Enable use of GL vector lighting. 0 = flat lighting.");
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}
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static void
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CheckGLVersionString (void)
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{
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gl_version = (char *) qfglGetString (GL_VERSION);
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if (sscanf (gl_version, "%d.%d", &gl_major, &gl_minor) == 2) {
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gl_release_number = 0;
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if (gl_major >= 1) {
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if (gl_minor >= 1) {
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gl_va_capable = true;
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} else {
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gl_va_capable = false;
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}
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}
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} else if (sscanf (gl_version, "%d.%d.%d", &gl_major, &gl_minor,
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&gl_release_number) == 3) {
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if (gl_major >= 1) {
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if (gl_minor >= 1) {
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gl_va_capable = true;
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} else {
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gl_va_capable = false;
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}
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}
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} else {
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Sys_Error ("Malformed OpenGL version string!");
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}
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Sys_MaskPrintf (SYS_VID, "GL_VERSION: %s\n", gl_version);
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gl_vendor = (char *) qfglGetString (GL_VENDOR);
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Sys_MaskPrintf (SYS_VID, "GL_VENDOR: %s\n", gl_vendor);
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gl_renderer = (char *) qfglGetString (GL_RENDERER);
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Sys_MaskPrintf (SYS_VID, "GL_RENDERER: %s\n", gl_renderer);
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gl_extensions = (char *) qfglGetString (GL_EXTENSIONS);
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Sys_MaskPrintf (SYS_VID, "GL_EXTENSIONS: %s\n", gl_extensions);
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if (strstr (gl_renderer, "Mesa DRI Mach64"))
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gl_feature_mach64 = true;
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}
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static void
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CheckAnisotropyExtensions (void)
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{
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if (QFGL_ExtensionPresent ("GL_EXT_texture_filter_anisotropic")) {
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Anisotropy = true;
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qfglGetFloatv (GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT, &aniso_max);
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} else {
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Anisotropy = false;
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aniso_max = 1.0;
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}
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}
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static void
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CheckBGRAExtensions (void)
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{
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if (gl_major > 1 || (gl_major >= 1 && gl_minor >= 3)) {
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gl_bgra_capable = true;
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} else if (QFGL_ExtensionPresent ("GL_EXT_bgra")) {
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gl_bgra_capable = true;
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} else {
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gl_bgra_capable = false;
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}
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}
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static void
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CheckCombineExtensions (void)
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{
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if (gl_major >= 1 && gl_minor >= 3) {
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gl_combine_capable = true;
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Sys_MaskPrintf (SYS_VID, "COMBINE active, multitextured doublebright "
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"enabled.\n");
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} else if (QFGL_ExtensionPresent ("GL_ARB_texture_env_combine")) {
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gl_combine_capable = true;
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Sys_MaskPrintf (SYS_VID, "COMBINE_ARB active, multitextured "
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"doublebright enabled.\n");
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} else {
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gl_combine_capable = false;
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Sys_MaskPrintf (SYS_VID, "GL_ARB_texture_env_combine not found. "
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"gl_doublebright will have no effect with "
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"gl_multitexture on.\n");
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}
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}
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/*
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CheckMultiTextureExtensions
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Check for ARB multitexture support
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*/
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static void
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CheckMultiTextureExtensions (void)
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{
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Sys_MaskPrintf (SYS_VID, "Checking for multitexture: ");
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if (COM_CheckParm ("-nomtex")) {
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Sys_MaskPrintf (SYS_VID, "disabled.\n");
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return;
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}
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if (gl_major >= 1 && gl_minor >= 3) {
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qfglGetIntegerv (GL_MAX_TEXTURE_UNITS, &gl_mtex_tmus);
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if (gl_mtex_tmus >= 2) {
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Sys_MaskPrintf (SYS_VID, "enabled, %d TMUs.\n", gl_mtex_tmus);
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qglMultiTexCoord2f =
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QFGL_ExtensionAddress ("glMultiTexCoord2f");
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qglMultiTexCoord2fv =
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QFGL_ExtensionAddress ("glMultiTexCoord2fv");
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qglActiveTexture = QFGL_ExtensionAddress ("glActiveTexture");
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gl_mtex_enum = GL_TEXTURE0;
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if (qglMultiTexCoord2f && gl_mtex_enum)
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gl_mtex_capable = true;
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else
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Sys_MaskPrintf (SYS_VID, "Multitexture disabled, could not "
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"find required functions\n");
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} else {
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Sys_MaskPrintf (SYS_VID,
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"Multitexture disabled, not enough TMUs.\n");
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}
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} else if (QFGL_ExtensionPresent ("GL_ARB_multitexture")) {
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qfglGetIntegerv (GL_MAX_TEXTURE_UNITS_ARB, &gl_mtex_tmus);
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if (gl_mtex_tmus >= 2) {
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Sys_MaskPrintf (SYS_VID, "enabled, %d TMUs.\n", gl_mtex_tmus);
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qglMultiTexCoord2f =
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QFGL_ExtensionAddress ("glMultiTexCoord2fARB");
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qglMultiTexCoord2fv =
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QFGL_ExtensionAddress ("glMultiTexCoord2fvARB");
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qglActiveTexture = QFGL_ExtensionAddress ("glActiveTextureARB");
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gl_mtex_enum = GL_TEXTURE0_ARB;
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if (qglMultiTexCoord2f && gl_mtex_enum)
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gl_mtex_capable = true;
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else
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Sys_MaskPrintf (SYS_VID, "Multitexture disabled, could not "
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"find required functions\n");
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} else {
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Sys_MaskPrintf (SYS_VID,
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"Multitexture disabled, not enough TMUs.\n");
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}
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} else {
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Sys_MaskPrintf (SYS_VID, "not found.\n");
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}
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}
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static void
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CheckTruFormExtensions (void)
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{
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if (QFGL_ExtensionPresent ("GL_ATI_pn_triangles")) {
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TruForm = true;
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qfglGetIntegerv (GL_MAX_PN_TRIANGLES_TESSELATION_LEVEL_ATI,
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&tess_max);
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qfglPNTrianglesiATI (GL_PN_TRIANGLES_NORMAL_MODE_ATI,
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GL_PN_TRIANGLES_NORMAL_MODE_QUADRATIC_ATI);
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qfglPNTrianglesiATI (GL_PN_TRIANGLES_POINT_MODE_ATI,
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GL_PN_TRIANGLES_POINT_MODE_CUBIC_ATI);
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} else {
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TruForm = false;
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tess = 0;
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tess_max = 0;
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}
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}
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static void
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CheckVertexArraySize (void)
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{
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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);
|
|
}
|
|
|
|
void
|
|
VID_SetPalette (unsigned char *palette)
|
|
{
|
|
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 qboolean palflag = false;
|
|
QFile *f;
|
|
|
|
// 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;
|
|
|
|
QFS_FOpenFile ("glquake/15to8.pal", &f);
|
|
if (f) {
|
|
Qread (f, d_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;
|
|
}
|
|
}
|
|
d_15to8table[i] = k;
|
|
}
|
|
snprintf (s, sizeof (s), "%s/glquake/15to8.pal", qfs_gamedir->dir.def);
|
|
if ((f = QFS_WOpen (s, 0)) != NULL) {
|
|
Qwrite (f, d_15to8table, 1 << 15);
|
|
Qclose (f);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
GL_Init_Common (void)
|
|
{
|
|
GLF_FindFunctions ();
|
|
CheckGLVersionString ();
|
|
|
|
CheckAnisotropyExtensions ();
|
|
CheckMultiTextureExtensions ();
|
|
CheckCombineExtensions ();
|
|
CheckBGRAExtensions ();
|
|
CheckTruFormExtensions ();
|
|
CheckVertexArraySize ();
|
|
CheckLights ();
|
|
|
|
GL_Common_Init_Cvars ();
|
|
|
|
qfglClearColor (0, 0, 0, 0);
|
|
|
|
qfglEnable (GL_TEXTURE_2D);
|
|
qfglCullFace (GL_FRONT);
|
|
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 (Anisotropy)
|
|
qfglTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT,
|
|
aniso);
|
|
qfglTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
|
|
qfglTexParameterf (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
|
|
}
|
|
|
|
VISIBLE qboolean
|
|
VID_Is8bit (void)
|
|
{
|
|
return is8bit;
|
|
}
|
|
|
|
static void
|
|
Tdfx_Init8bitPalette (void)
|
|
{
|
|
// Check for 8bit Extensions and initialize them.
|
|
int i;
|
|
|
|
if (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);
|
|
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 (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);
|
|
is8bit = true;
|
|
} else {
|
|
Sys_MaskPrintf (SYS_VID,
|
|
"\n GL_EXT_shared_texture_palette not found.");
|
|
}
|
|
}
|
|
|
|
void
|
|
VID_Init8bitPalette (void)
|
|
{
|
|
Sys_MaskPrintf (SYS_VID, "Checking for 8-bit extension: ");
|
|
if (vid_use8bit->int_val) {
|
|
Tdfx_Init8bitPalette ();
|
|
Shared_Init8bitPalette ();
|
|
if (!is8bit)
|
|
Sys_MaskPrintf (SYS_VID, "\n 8-bit extension not found.\n");
|
|
} else {
|
|
Sys_MaskPrintf (SYS_VID, "disabled.\n");
|
|
}
|
|
}
|
|
|
|
void
|
|
VID_LockBuffer (void)
|
|
{
|
|
}
|
|
|
|
void
|
|
VID_UnlockBuffer (void)
|
|
{
|
|
}
|
|
|
|
void
|
|
D_BeginDirectRect (int x, int y, byte *pbitmap, int width, int height)
|
|
{
|
|
}
|
|
|
|
void
|
|
D_EndDirectRect (int x, int y, int width, int height)
|
|
{
|
|
}
|