/* 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 */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #ifdef HAVE_STRING_H # include #endif #ifdef HAVE_STRINGS_H # include #endif #ifdef HAVE_DLOPEN # include #endif #include #include "QF/cvar.h" #include "QF/console.h" #include "QF/qargs.h" #include "QF/qendian.h" #include "QF/sys.h" #include "QF/va.h" #include "QF/vid.h" #include "QF/GL/extensions.h" #include "QF/GL/funcs.h" #include "QF/GL/qf_vid.h" #include "compat.h" #include "sbar.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; #define GR_REFRESH_75Hz 0x3 #define GR_DITHER_2x2 0x1 #define GR_DITHER_4x4 0x2 #define GR_RESOLUTION_320x200 0x0 #define GR_RESOLUTION_320x240 0x1 #define GR_RESOLUTION_400x256 0x2 #define GR_RESOLUTION_512x384 0x3 #define GR_RESOLUTION_640x200 0x4 #define GR_RESOLUTION_640x350 0x5 #define GR_RESOLUTION_640x400 0x6 #define GR_RESOLUTION_640x480 0x7 #define GR_RESOLUTION_800x600 0x8 #define GR_RESOLUTION_960x720 0x9 #define GR_RESOLUTION_512x256 0xb #define GR_RESOLUTION_856x480 0xa #define GR_RESOLUTION_400x300 0xF void (* qf_fxMesaDestroyContext) (fxMesaContext ctx); void (* qf_fxMesaSwapBuffers) (void); fxMesaContext (* qf_fxMesaCreateContext) (GLuint win, GrScreenResolution_t, GrScreenRefresh_t, const GLint attribList[]); void (* qf_fxMesaMakeCurrent) (fxMesaContext ctx); static fxMesaContext fc = NULL; int VID_options_items = 0; #if defined(HAVE_DLOPEN) void * (* glGetProcAddress) (const char *symbol)= NULL; void * QFGL_GetProcAddress (void *handle, const char *name) { void *glfunc = NULL; if (glGetProcAddress) glfunc = glGetProcAddress (name); if (!glfunc) glfunc = dlsym (handle, name); return glfunc; } void * QFGL_LoadLibrary (void) { void *handle; if (!(handle = dlopen (gl_driver, RTLD_NOW))) { Sys_Error ("Couldn't load OpenGL library %s: %s", gl_driver, dlerror ()); } glGetProcAddress = dlsym (handle, "glXGetProcAddress"); if (!glGetProcAddress) glGetProcAddress = dlsym (handle, "glXGetProcAddressARB"); return handle; } #else # error "Cannot load libraries: %s was not configured with DSO support" // the following is to avoid other compiler errors void * QFGL_GetProcAddress (void *handle, const char *name) { return 0; } void * QFGL_LoadLibrary (void) { return 0; } #endif // HAVE_DLOPEN static void VID_shutdown (void) { if (!fc) return; qf_fxMesaDestroyContext (fc); } static 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; Sys_MaskPrintf (SYS_vid, "Dithering: "); if ((p = COM_CheckParm ("-dither")) && p < com_argc) { if (strequal (com_argv[p+1], "2x2")) { dither_select (GR_DITHER_2x2); Sys_MaskPrintf (SYS_vid, "2x2.\n"); } if (strequal (com_argv[p+1], "4x4")) { dither_select (GR_DITHER_4x4); Sys_MaskPrintf (SYS_vid, "4x4.\n"); } } else { qfglDisable (GL_DITHER); Sys_MaskPrintf (SYS_vid, "disabled.\n"); } } VISIBLE void GL_EndRendering (void) { qfglFinish (); qf_fxMesaSwapBuffers (); } static unsigned 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 (unsigned int *width, unsigned int *height) { unsigned 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 VID_Init (byte *palette, byte *colormap) { GLint attribs[32]; Sys_RegisterShutdown (VID_shutdown); GLF_Init (); qf_fxMesaCreateContext = QFGL_ProcAddress (libgl_handle, "fxMesaCreateContext", true); qf_fxMesaDestroyContext = QFGL_ProcAddress (libgl_handle, "fxMesaDestroyContext", true); qf_fxMesaMakeCurrent = QFGL_ProcAddress (libgl_handle, "fxMesaMakeCurrent", true); qf_fxMesaSwapBuffers = QFGL_ProcAddress (libgl_handle, "fxMesaSwapBuffers", true); VID_GetWindowSize (640, 480); vid.maxwarpwidth = WARP_WIDTH; vid.maxwarpheight = WARP_HEIGHT; vid.colormap8 = vid_colormap = colormap; vid.fullbright = 256 - vid.colormap8[256 * VID_GRADES]; // 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; fc = qf_fxMesaCreateContext (0, findres (&vid.width, &vid.height), GR_REFRESH_75Hz, attribs); if (!fc) Sys_Error ("Unable to create 3DFX context."); qf_fxMesaMakeCurrent (fc); vid.numpages = 2; vid_gamma_avail = 1; GL_Init (); VID_InitGamma (palette); VID_SetPalette (vid.palette); // Check for 3DFX Extensions and initialize them. VID_Init8bitPalette (); vid.initialized = true; Sys_MaskPrintf (SYS_vid, "Video mode %dx%d initialized.\n", vid.width, vid.height); vid.recalc_refdef = 1; // force a surface cache flush } void VID_Init_Cvars (void) { Cvar_Register (&vid_system_gamma_cvar, 0, 0); } void VID_SetCaption (const char *text) { } qboolean VID_SetGamma (double gamma) { return true; }