/* vid_3dfxsvga.c OpenGL device driver for 3Dfx chipsets running Linux Copyright (C) 1996-1997 Id Software, Inc. Copyright (C) 1999,2000 contributors of the QuakeForge project Please see the file "AUTHORS" for a list of contributors 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 $Id$ */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #ifdef HAVE_STRING_H # include #endif #ifdef HAVE_STRINGS_H # include #endif #include #include #include #ifdef HAVE_DLOPEN # include #endif #include "compat.h" #include "QF/console.h" #include "QF/cvar.h" #include "QF/qargs.h" #include "QF/qendian.h" #include "sbar.h" #include "QF/GL/extensions.h" #include "QF/GL/funcs.h" #include "QF/sys.h" #include "QF/va.h" #include "QF/vid.h" #include "r_cvar.h" #define WARP_WIDTH 320 #define WARP_HEIGHT 200 #define GLAPI extern #define GLAPIENTRY #define FXMESA_NONE 0 /* to terminate attribList */ #define FXMESA_DOUBLEBUFFER 10 #define FXMESA_ALPHA_SIZE 11 /* followed by an integer */ #define FXMESA_DEPTH_SIZE 12 /* followed by an integer */ #define GL_DITHER 0x0BD0 typedef struct tfxMesaContext *fxMesaContext; void (* fxMesaDestroyContext) (fxMesaContext ctx); void (* fxMesaSwapBuffers) (void); fxMesaContext (* fxMesaCreateContext) (GLuint win, GrScreenResolution_t, GrScreenRefresh_t, const GLint attribList[]); void (* fxMesaMakeCurrent) (fxMesaContext ctx); // FIXME!!!!! This belongs in include/qfgl_ext.h -- deek typedef void (GLAPIENTRY * QF_3DfxSetDitherModeEXT) (GrDitherMode_t mode); cvar_t *vid_system_gamma; cvar_t *tdfx_brighten; static fxMesaContext fc = NULL; void *libgl_handle; int VID_options_items = 0; extern void GL_Init_Common (void); extern void VID_Init8bitPalette (void); /*-----------------------------------------------------------------------*/ void VID_Shutdown (void) { if (!fc) return; fxMesaDestroyContext (fc); } void signal_handler (int sig) { printf ("Received signal %d, exiting...\n", sig); Sys_Quit (); abort (); exit (0); } void InitSig (void) { signal (SIGHUP, signal_handler); signal (SIGINT, signal_handler); signal (SIGQUIT, signal_handler); signal (SIGILL, signal_handler); signal (SIGTRAP, signal_handler); // signal(SIGIOT, signal_handler); signal (SIGBUS, signal_handler); // signal(SIGFPE, signal_handler); signal (SIGSEGV, signal_handler); signal (SIGTERM, signal_handler); } /* GL_Init */ void GL_Init (void) { QF_3DfxSetDitherModeEXT dither_select = NULL; int p; GL_Init_Common (); if (!(QFGL_ExtensionPresent ("3DFX_set_dither_mode"))) return; if (!(dither_select = QFGL_ExtensionAddress ("gl3DfxSetDitherModeEXT"))) return; Con_Printf ("Dithering: "); if ((p = COM_CheckParm ("-dither")) && p < com_argc) { if (strequal (com_argv[p+1], "2x2")) { dither_select (GR_DITHER_2x2); Con_Printf ("2x2.\n"); } if (strequal (com_argv[p+1], "4x4")) { dither_select (GR_DITHER_4x4); Con_Printf ("4x4.\n"); } } else { qfglDisable (GL_DITHER); Con_Printf ("disabled.\n"); } } void GL_EndRendering (void) { qfglFlush (); fxMesaSwapBuffers (); Sbar_Changed (); } static int resolutions[][3] = { {320, 200, GR_RESOLUTION_320x200}, {320, 240, GR_RESOLUTION_320x240}, {400, 256, GR_RESOLUTION_400x256}, {400, 300, GR_RESOLUTION_400x300}, {512, 256, GR_RESOLUTION_512x256}, {512, 384, GR_RESOLUTION_512x384}, {640, 200, GR_RESOLUTION_640x200}, {640, 350, GR_RESOLUTION_640x350}, {640, 400, GR_RESOLUTION_640x400}, {640, 480, GR_RESOLUTION_640x480}, {800, 600, GR_RESOLUTION_800x600}, {856, 480, GR_RESOLUTION_856x480}, {960, 720, GR_RESOLUTION_960x720}, #ifdef GR_RESOLUTION_1024x768 {1024, 768, GR_RESOLUTION_1024x768}, #endif #ifdef GR_RESOLUTION_1152x864 {1152, 864, GR_RESOLUTION_1152x864}, #endif #ifdef GR_RESOLUTION_1280x960 {1280, 960, GR_RESOLUTION_1280x960}, #endif #ifdef GR_RESOLUTION_1280x1024 {1280, 1024, GR_RESOLUTION_1280x1024}, #endif #ifdef GR_RESOLUTION_1600x1024 {1600, 1024, GR_RESOLUTION_1600x1024}, #endif #ifdef GR_RESOLUTION_1600x1200 {1600, 1200, GR_RESOLUTION_1600x1200}, #endif #ifdef GR_RESOLUTION_1792x1344 {1792, 1344, GR_RESOLUTION_1792x1344}, #endif #ifdef GR_RESOLUTION_1856x1392 {1856, 1392, GR_RESOLUTION_1856x1392}, #endif #ifdef GR_RESOLUTION_1920x1440 {1920, 1440, GR_RESOLUTION_1920x1440}, #endif #ifdef GR_RESOLUTION_2048x1536 {2048, 1536, GR_RESOLUTION_2048x1536}, #endif #ifdef GR_RESOLUTION_2048x2048 {2048, 2048, GR_RESOLUTION_2048x2048} #endif }; #define NUM_RESOLUTIONS (sizeof (resolutions) / (sizeof (int) * 3)) static int findres (int *width, int *height) { int i; for (i = 0; i < NUM_RESOLUTIONS; i++) { if ((*width <= resolutions[i][0]) && (*height <= resolutions[i][1])) { *width = resolutions[i][0]; *height = resolutions[i][1]; return resolutions[i][2]; } } *width = 640; *height = 480; return GR_RESOLUTION_640x480; } void TDFX_BrightenPalette (unsigned char *palette) { byte *pal; int i; float red, green, blue, maxnum, somenum; pal = palette; for (i = 0; i < 255; i++) { red = (float) pal[0]; green = (float) pal[1]; blue = (float) pal[2]; maxnum = max (red, max (green, blue)); somenum = (bound (0.0, (maxnum * tdfx_brighten->value), 255.0) / maxnum); pal[0] = (byte) ((somenum * red) + 0.5); pal[1] = (byte) ((somenum * green) + 0.5); pal[2] = (byte) ((somenum * blue) + 0.5); pal += 3; } } void VID_Init (unsigned char *palette) { int i; GLint attribs[32]; #ifdef HAVE_DLOPEN if (!(libgl_handle = dlopen (gl_libgl->string, RTLD_NOW))) { Sys_Error ("Can't open OpenGL library \"%s\": %s\n", gl_libgl->string, dlerror()); return; } #else # error "No dynamic library support. FIXME." #endif fxMesaCreateContext = QFGL_ProcAddress (libgl_handle, "fxMesaCreateContext", true); fxMesaDestroyContext = QFGL_ProcAddress (libgl_handle, "fxMesaDestroyContext", true); fxMesaMakeCurrent = QFGL_ProcAddress (libgl_handle, "fxMesaMakeCurrent", true); fxMesaSwapBuffers = QFGL_ProcAddress (libgl_handle, "fxMesaSwapBuffers", true); QFGL_ProcAddress (NULL, NULL, false); VID_GetWindowSize (640, 480); Con_CheckResize (); // Now that we have a window size, fix console vid.maxwarpwidth = WARP_WIDTH; vid.maxwarpheight = WARP_HEIGHT; vid.colormap = vid_colormap; vid.fullbright = 256 - LittleLong (*((int *) vid.colormap + 2048)); // interpret command-line params // set vid parameters attribs[0] = FXMESA_DOUBLEBUFFER; attribs[1] = FXMESA_ALPHA_SIZE; attribs[2] = 1; attribs[3] = FXMESA_DEPTH_SIZE; attribs[4] = 1; attribs[5] = FXMESA_NONE; if ((i = COM_CheckParm ("-conwidth"))) vid.conwidth = atoi (com_argv[i + 1]); else vid.conwidth = 640; vid.conwidth &= 0xfff8; // make it a multiple of eight vid.conwidth = max (vid.conwidth, 320); // pick a conheight that matches with correct aspect vid.conheight = vid.conwidth * 3 / 4; if ((i = COM_CheckParm ("-conheight")) != 0) vid.conheight = atoi (com_argv[i + 1]); vid.conheight = max (vid.conheight, 200); fc = fxMesaCreateContext (0, findres (&scr_width, &scr_height), GR_REFRESH_75Hz, attribs); if (!fc) Sys_Error ("Unable to create 3DFX context.\n"); fxMesaMakeCurrent (fc); vid.width = vid.conwidth = min (vid.conwidth, scr_width); vid.height = vid.conheight = min (vid.conheight, scr_height); vid.aspect = ((float) vid.height / (float) vid.width) * (320.0 / 240.0); vid.numpages = 2; InitSig (); // trap evil signals vid_gamma_avail = 1; GL_Init (); if (tdfx_brighten->int_val) TDFX_BrightenPalette(palette); VID_InitGamma (palette); VID_SetPalette (palette); // Check for 3DFX Extensions and initialize them. VID_Init8bitPalette (); vid.initialized = true; Con_Printf ("Video mode %dx%d initialized.\n", scr_width, scr_height); vid.recalc_refdef = 1; // force a surface cache flush } void VID_Init_Cvars (void) { vid_system_gamma = Cvar_Get ("vid_system_gamma", "1", CVAR_ARCHIVE, NULL, "Use system gamma control if available"); tdfx_brighten = Cvar_Get ("tdfx_brighten", "0", CVAR_ROM, NULL, "Brighten 3DFX palette"); } void VID_ExtraOptionDraw (unsigned int options_draw_cursor) { /* Port specific Options menu entrys */ } void VID_ExtraOptionCmd (int option_cursor) { /* switch(option_cursor) { case 12: // Always start with 12 break; } */ } void VID_SetCaption (const char *text) { } qboolean VID_SetGamma (double gamma) { grGammaCorrectionValue((float) gamma); return true; }