mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-06 05:01:26 +00:00
366 lines
8.3 KiB
C
366 lines
8.3 KiB
C
/*
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vid_3dfxsvga.c
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OpenGL device driver for 3Dfx chipsets running Linux
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Copyright (C) 1996-1997 Id Software, Inc.
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Copyright (C) 1999,2000 contributors of the QuakeForge project
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Please see the file "AUTHORS" for a list of contributors
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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__ ((unused)) const char rcsid[] =
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"$Id$";
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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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#ifdef HAVE_DLOPEN
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# include <dlfcn.h>
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#endif
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#include <setjmp.h>
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#include "QF/console.h"
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#include "QF/cvar.h"
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#include "QF/qargs.h"
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#include "QF/qendian.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/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 "sbar.h"
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#include "r_cvar.h"
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#define WARP_WIDTH 320
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#define WARP_HEIGHT 200
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#define GLAPI extern
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#define GLAPIENTRY
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#define FXMESA_NONE 0 // to terminate attribList
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#define FXMESA_DOUBLEBUFFER 10
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#define FXMESA_ALPHA_SIZE 11 // followed by an integer
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#define FXMESA_DEPTH_SIZE 12 // followed by an integer
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#define GL_DITHER 0x0BD0
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typedef struct tfxMesaContext *fxMesaContext;
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#define GR_REFRESH_75Hz 0x3
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#define GR_DITHER_2x2 0x1
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#define GR_DITHER_4x4 0x2
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#define GR_RESOLUTION_320x200 0x0
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#define GR_RESOLUTION_320x240 0x1
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#define GR_RESOLUTION_400x256 0x2
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#define GR_RESOLUTION_512x384 0x3
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#define GR_RESOLUTION_640x200 0x4
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#define GR_RESOLUTION_640x350 0x5
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#define GR_RESOLUTION_640x400 0x6
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#define GR_RESOLUTION_640x480 0x7
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#define GR_RESOLUTION_800x600 0x8
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#define GR_RESOLUTION_960x720 0x9
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#define GR_RESOLUTION_512x256 0xb
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#define GR_RESOLUTION_856x480 0xa
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#define GR_RESOLUTION_400x300 0xF
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void (* qf_fxMesaDestroyContext) (fxMesaContext ctx);
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void (* qf_fxMesaSwapBuffers) (void);
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fxMesaContext (* qf_fxMesaCreateContext) (GLuint win, GrScreenResolution_t, GrScreenRefresh_t, const GLint attribList[]);
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void (* qf_fxMesaMakeCurrent) (fxMesaContext ctx);
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static fxMesaContext fc = NULL;
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int VID_options_items = 0;
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#if defined(HAVE_DLOPEN)
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void * (* glGetProcAddress) (const char *symbol)= NULL;
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void *
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QFGL_GetProcAddress (void *handle, const char *name)
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{
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void *glfunc = NULL;
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if (glGetProcAddress)
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glfunc = glGetProcAddress (name);
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if (!glfunc)
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glfunc = dlsym (handle, name);
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return glfunc;
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}
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void *
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QFGL_LoadLibrary (void)
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{
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void *handle;
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if (!(handle = dlopen (gl_driver->string, RTLD_NOW))) {
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Sys_Error ("Couldn't load OpenGL library %s: %s", gl_driver->string,
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dlerror ());
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}
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glGetProcAddress = dlsym (handle, "glXGetProcAddressARB");
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return handle;
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}
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#else
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# error "Cannot load libraries: %s was not configured with DSO support"
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// the following is to avoid other compiler errors
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void *
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QFGL_GetProcAddress (void *handle, const char *name)
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{
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return 0;
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}
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void *
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QFGL_LoadLibrary (void)
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{
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return 0;
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}
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#endif // HAVE_DLOPEN
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void
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VID_Shutdown (void)
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{
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if (!fc)
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return;
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qf_fxMesaDestroyContext (fc);
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}
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static void
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GL_Init (void)
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{
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QF_3DfxSetDitherModeEXT dither_select = NULL;
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int p;
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GL_Init_Common ();
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if (!(QFGL_ExtensionPresent ("3DFX_set_dither_mode")))
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return;
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if (!(dither_select = QFGL_ExtensionAddress ("gl3DfxSetDitherModeEXT")))
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return;
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Con_Printf ("Dithering: ");
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if ((p = COM_CheckParm ("-dither")) && p < com_argc) {
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if (strequal (com_argv[p+1], "2x2")) {
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dither_select (GR_DITHER_2x2);
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Con_Printf ("2x2.\n");
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}
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if (strequal (com_argv[p+1], "4x4")) {
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dither_select (GR_DITHER_4x4);
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Con_Printf ("4x4.\n");
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}
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} else {
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qfglDisable (GL_DITHER);
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Con_Printf ("disabled.\n");
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}
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}
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void
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GL_EndRendering (void)
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{
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qfglFinish ();
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qf_fxMesaSwapBuffers ();
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Sbar_Changed ();
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}
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static int resolutions[][3] = {
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{320, 200, GR_RESOLUTION_320x200},
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{320, 240, GR_RESOLUTION_320x240},
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{400, 256, GR_RESOLUTION_400x256},
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{400, 300, GR_RESOLUTION_400x300},
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{512, 256, GR_RESOLUTION_512x256},
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{512, 384, GR_RESOLUTION_512x384},
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{640, 200, GR_RESOLUTION_640x200},
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{640, 350, GR_RESOLUTION_640x350},
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{640, 400, GR_RESOLUTION_640x400},
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{640, 480, GR_RESOLUTION_640x480},
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{800, 600, GR_RESOLUTION_800x600},
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{856, 480, GR_RESOLUTION_856x480},
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{960, 720, GR_RESOLUTION_960x720},
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#ifdef GR_RESOLUTION_1024x768
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{1024, 768, GR_RESOLUTION_1024x768},
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#endif
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#ifdef GR_RESOLUTION_1152x864
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{1152, 864, GR_RESOLUTION_1152x864},
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#endif
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#ifdef GR_RESOLUTION_1280x960
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{1280, 960, GR_RESOLUTION_1280x960},
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#endif
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#ifdef GR_RESOLUTION_1280x1024
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{1280, 1024, GR_RESOLUTION_1280x1024},
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#endif
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#ifdef GR_RESOLUTION_1600x1024
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{1600, 1024, GR_RESOLUTION_1600x1024},
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#endif
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#ifdef GR_RESOLUTION_1600x1200
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{1600, 1200, GR_RESOLUTION_1600x1200},
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#endif
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#ifdef GR_RESOLUTION_1792x1344
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{1792, 1344, GR_RESOLUTION_1792x1344},
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#endif
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#ifdef GR_RESOLUTION_1856x1392
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{1856, 1392, GR_RESOLUTION_1856x1392},
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#endif
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#ifdef GR_RESOLUTION_1920x1440
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{1920, 1440, GR_RESOLUTION_1920x1440},
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#endif
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#ifdef GR_RESOLUTION_2048x1536
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{2048, 1536, GR_RESOLUTION_2048x1536},
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#endif
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#ifdef GR_RESOLUTION_2048x2048
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{2048, 2048, GR_RESOLUTION_2048x2048}
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#endif
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};
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#define NUM_RESOLUTIONS (sizeof (resolutions) / (sizeof (int) * 3))
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static int
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findres (int *width, int *height)
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{
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unsigned int i;
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for (i = 0; i < NUM_RESOLUTIONS; i++) {
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if ((*width <= resolutions[i][0]) && (*height <= resolutions[i][1])) {
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*width = resolutions[i][0];
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*height = resolutions[i][1];
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return resolutions[i][2];
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}
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}
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*width = 640;
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*height = 480;
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return GR_RESOLUTION_640x480;
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}
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void
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VID_Init (unsigned char *palette)
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{
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int i;
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GLint attribs[32];
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GLF_Init ();
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qf_fxMesaCreateContext = QFGL_ProcAddress (libgl_handle,
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"fxMesaCreateContext", true);
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qf_fxMesaDestroyContext = QFGL_ProcAddress (libgl_handle,
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"fxMesaDestroyContext", true);
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qf_fxMesaMakeCurrent = QFGL_ProcAddress (libgl_handle,
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"fxMesaMakeCurrent", true);
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qf_fxMesaSwapBuffers = QFGL_ProcAddress (libgl_handle,
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"fxMesaSwapBuffers", true);
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VID_GetWindowSize (640, 480);
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vid.maxwarpwidth = WARP_WIDTH;
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vid.maxwarpheight = WARP_HEIGHT;
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vid.colormap8 = vid_colormap;
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vid.fullbright = 256 - LittleLong (*((int *) vid.colormap8 + 2048));
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// interpret command-line params
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// set vid parameters
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attribs[0] = FXMESA_DOUBLEBUFFER;
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attribs[1] = FXMESA_ALPHA_SIZE;
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attribs[2] = 1;
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attribs[3] = FXMESA_DEPTH_SIZE;
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attribs[4] = 1;
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attribs[5] = FXMESA_NONE;
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vid.conwidth &= 0xfff8; // make it a multiple of eight
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vid.conwidth = max (vid.conwidth, 320);
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// pick a conheight that matches with correct aspect
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vid.conheight = (vid.conwidth * 3) / 4;
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if ((i = COM_CheckParm ("-conheight")) != 0)
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vid.conheight = atoi (com_argv[i + 1]);
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vid.conheight = max (vid.conheight, 200);
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vid.width = vid.conwidth = min (vid.conwidth, (unsigned int) scr_width);
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vid.height = vid.conheight = min (vid.conheight,
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(unsigned int) scr_height);
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Con_CheckResize (); // Now that we have a window size, fix console
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fc = qf_fxMesaCreateContext (0, findres (&scr_width, &scr_height),
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GR_REFRESH_75Hz, attribs);
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if (!fc)
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Sys_Error ("Unable to create 3DFX context.");
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qf_fxMesaMakeCurrent (fc);
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vid.aspect = ((float) vid.height / (float) vid.width) * (320.0 / 240.0);
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vid.numpages = 2;
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vid_gamma_avail = 1;
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GL_Init ();
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VID_InitGamma (palette);
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VID_SetPalette (vid.palette);
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// Check for 3DFX Extensions and initialize them.
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VID_Init8bitPalette ();
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vid.initialized = true;
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Con_Printf ("Video mode %dx%d initialized.\n", scr_width, scr_height);
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vid.recalc_refdef = 1; // force a surface cache flush
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}
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void
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VID_Init_Cvars (void)
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{
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vid_system_gamma = Cvar_Get ("vid_system_gamma", "1", CVAR_ARCHIVE, NULL,
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"Use system gamma control if available");
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}
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void
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VID_SetCaption (const char *text)
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{
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}
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qboolean
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VID_SetGamma (double gamma)
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{
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return true;
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}
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