/* vid_3dfxsvga.c OpenGL device driver for 3Dfx chipsets running Linux Copyright (C) 1996-1997 Id Software, Inc. Copyright (C) 1999,2000 Nelson Rush. 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 $Id$ */ #include "qtypes.h" #include "quakedef.h" #include "glquake.h" #include "sys.h" #include "console.h" #include "cvar.h" #include "sbar.h" #include "qendian.h" #include "qargs.h" //#include "lib_replace.h" #include #include #include #ifdef HAVE_DLFCN_H # include #endif #ifndef RTLD_LAZY # ifdef DL_LAZY # define RTLD_LAZY DL_LAZY # else # define RTLD_LAZY 0 # endif #endif #include #include #include #define WARP_WIDTH 320 #define WARP_HEIGHT 200 //unsigned short d_8to16table[256]; unsigned int d_8to24table[256]; unsigned char d_15to8table[65536]; #ifdef HAVE_DLOPEN static void *dlhand = NULL; #endif static fxMesaContext fc = NULL; extern int scr_width, scr_height; static qboolean is8bit = 0; int VID_options_items = 0; /*-----------------------------------------------------------------------*/ //int texture_mode = GL_NEAREST; //int texture_mode = GL_NEAREST_MIPMAP_NEAREST; //int texture_mode = GL_NEAREST_MIPMAP_LINEAR; int texture_mode = GL_LINEAR; //int texture_mode = GL_LINEAR_MIPMAP_NEAREST; //int texture_mode = GL_LINEAR_MIPMAP_LINEAR; int texture_extension_number = 1; float gldepthmin, gldepthmax; const char *gl_vendor; const char *gl_renderer; const char *gl_version; const char *gl_extensions; // ARB Multitexture int gl_mtex_enum = TEXTURE0_SGIS; qboolean gl_arb_mtex = false; qboolean gl_mtexable = false; /*-----------------------------------------------------------------------*/ void D_BeginDirectRect (int x, int y, byte *pbitmap, int width, int height) { } void D_EndDirectRect (int x, int y, int width, int height) { } void VID_Shutdown(void) { if (!fc) return; fxMesaDestroyContext(fc); } void signal_handler(int sig) { printf("Received signal %d, exiting...\n", sig); Host_Shutdown(); abort(); //Sys_Quit(); 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); } void VID_ShiftPalette(unsigned char *p) { // VID_SetPalette(p); } void VID_SetPalette (unsigned char *palette) { byte *pal; unsigned int r,g,b; unsigned int v; int r1,g1,b1; int k; unsigned short i; unsigned int *table; QFile *f; char s[255]; //#endif float dist, bestdist; // // 8 8 8 encoding // Con_Printf("Converting 8to24\n"); pal = palette; table = d_8to24table; for (i=0 ; i<256 ; i++) { r = pal[0]; g = pal[1]; b = pal[2]; pal += 3; // v = (255<<24) + (r<<16) + (g<<8) + (b<<0); // v = (255<<0) + (r<<8) + (g<<16) + (b<<24); v = (255<<24) + (r<<0) + (g<<8) + (b<<16); *table++ = v; } d_8to24table[255] = 0; // 255 is transparent // JACK: 3D distance calcs - k is last closest, l is the distance. { static qboolean palflag = false; // FIXME: Precalculate this and cache to disk. if (palflag) return; palflag = true; } COM_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 = 0x1F 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", com_gamedir); Sys_mkdir (s); snprintf(s, sizeof(s), "%s/glquake/15to8.pal", com_gamedir); if ((f = Qopen(s, "wb")) != NULL) { Qwrite(f, d_15to8table, 1<<15); Qclose(f); } } } /* CheckMultiTextureExtensions Check for ARB, SGIS, or EXT multitexture support */ void CheckMultiTextureExtensions ( void ) { Con_Printf ("Checking for multitexture... "); if (COM_CheckParm ("-nomtex")) { Con_Printf ("disabled\n"); return; } #ifdef HAVE_DLOPEN dlhand = dlopen (NULL, RTLD_LAZY); if (dlhand == NULL) { Con_Printf ("unable to check\n"); return; } if (strstr(gl_extensions, "GL_ARB_multitexture ")) { Con_Printf ("GL_ARB_multitexture\n"); qglMTexCoord2f = (void *)dlsym(dlhand, "glMultiTexCoord2fARB"); qglSelectTexture = (void *)dlsym(dlhand, "glActiveTextureARB"); gl_mtex_enum = GL_TEXTURE0_ARB; gl_mtexable = true; gl_arb_mtex = true; } else if (strstr(gl_extensions, "GL_SGIS_multitexture ")) { Con_Printf ("GL_SGIS_multitexture\n"); qglMTexCoord2f = (void *)dlsym(dlhand, "glMTexCoord2fSGIS"); qglSelectTexture = (void *)dlsym(dlhand, "glSelectTextureSGIS"); gl_mtex_enum = TEXTURE0_SGIS; gl_mtexable = true; gl_arb_mtex = false; } else if (strstr(gl_extensions, "GL_EXT_multitexture ")) { Con_Printf ("GL_EXT_multitexture\n"); qglMTexCoord2f = (void *)dlsym(dlhand, "glMTexCoord2fEXT"); qglSelectTexture = (void *)dlsym(dlhand, "glSelectTextureEXT"); gl_mtex_enum = TEXTURE0_SGIS; gl_mtexable = true; gl_arb_mtex = false; } else { Con_Printf ("none found\n"); } dlclose(dlhand); dlhand = NULL; #else gl_mtexable = false; #endif } typedef void (GLAPIENTRY *gl3DfxSetDitherModeEXT_FUNC) (GrDitherMode_t mode); /* =============== GL_Init =============== */ void GL_Init (void) { gl_vendor = glGetString (GL_VENDOR); Con_Printf ("GL_VENDOR: %s\n", gl_vendor); gl_renderer = glGetString (GL_RENDERER); Con_Printf ("GL_RENDERER: %s\n", gl_renderer); gl_version = glGetString (GL_VERSION); Con_Printf ("GL_VERSION: %s\n", gl_version); gl_extensions = glGetString (GL_EXTENSIONS); Con_Printf ("GL_EXTENSIONS: %s\n", gl_extensions); CheckMultiTextureExtensions (); glClearColor (1,0,0,0); glCullFace(GL_FRONT); glEnable(GL_TEXTURE_2D); glEnable(GL_ALPHA_TEST); glAlphaFunc(GL_GREATER, 0.666); glPolygonMode (GL_FRONT_AND_BACK, GL_FILL); glShadeModel (GL_FLAT); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); glEnable (GL_BLEND); glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); Con_Printf ("Dithering: "); dlhand = dlopen (NULL, RTLD_LAZY); if (dlhand == NULL) { Con_Printf ("unable to set.\n"); return; } if (strstr(gl_extensions, "3DFX_set_dither_mode")) { gl3DfxSetDitherModeEXT_FUNC dither_select = NULL; dither_select = (void *) dlsym(dlhand, "gl3DfxSetDitherModeEXT"); if (COM_CheckParm ("-dither_2x2")) { dither_select(GR_DITHER_2x2); Con_Printf ("2x2.\n"); } else if (COM_CheckParm ("-dither_4x4")) { dither_select(GR_DITHER_4x4); Con_Printf ("4x4.\n"); } else { glDisable(GL_DITHER); Con_Printf ("disabled.\n"); } } dlclose(dlhand); dlhand = NULL; } /* ================= GL_BeginRendering ================= */ void GL_BeginRendering (int *x, int *y, int *width, int *height) { *x = *y = 0; *width = scr_width; *height = scr_height; } void GL_EndRendering (void) { glFlush(); 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; } qboolean VID_Is8bit(void) { return is8bit; } typedef void (GLAPIENTRY *glColorTableEXT_FUNC) (GLenum, GLenum, GLsizei, GLenum, GLenum, const GLvoid *); typedef void (GLAPIENTRY *gl3DfxSetPaletteEXT_FUNC) (GLuint *pal); void VID_Init8bitPalette() { // Check for 8bit Extensions and initialize them. int i; dlhand = dlopen (NULL, RTLD_LAZY); Con_Printf ("8-bit GL extensions: "); if (dlhand == NULL) { Con_Printf ("unable to check.\n"); return; } if (COM_CheckParm("-no8bit")) { Con_Printf("disabled.\n"); return; } if (strstr(gl_extensions, "3DFX_set_global_palette")) { char *oldpal; GLubyte table[256][4]; gl3DfxSetPaletteEXT_FUNC load_texture = NULL; Con_Printf("3DFX_set_global_palette.\n"); load_texture = (void *) dlsym(dlhand, "gl3DfxSetPaletteEXT"); glEnable( GL_SHARED_TEXTURE_PALETTE_EXT ); 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++; } load_texture((GLuint *)table); is8bit = true; } else if (strstr(gl_extensions, "GL_EXT_shared_texture_palette")) { char thePalette[256*3]; char *oldPalette, *newPalette; glColorTableEXT_FUNC load_texture = NULL; Con_Printf("GL_EXT_shared.\n"); load_texture = (void *) dlsym(dlhand, "glColorTableEXT"); glEnable( GL_SHARED_TEXTURE_PALETTE_EXT ); oldPalette = (char *) d_8to24table; //d_8to24table3dfx; newPalette = thePalette; for (i=0;i<256;i++) { *newPalette++ = *oldPalette++; *newPalette++ = *oldPalette++; *newPalette++ = *oldPalette++; oldPalette++; } load_texture(GL_SHARED_TEXTURE_PALETTE_EXT, GL_RGB, 256, GL_RGB, GL_UNSIGNED_BYTE, (void *) thePalette); is8bit = true; } dlclose(dlhand); dlhand = NULL; Con_Printf ("not found.\n"); } void VID_Init(unsigned char *palette) { int i; GLint attribs[32]; char gldir[MAX_OSPATH]; VID_GetWindowSize (640, 480); vid.maxwarpwidth = WARP_WIDTH; vid.maxwarpheight = WARP_HEIGHT; vid.colormap = host_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")) != 0) vid.conwidth = atoi(com_argv[i+1]); else vid.conwidth = 640; vid.conwidth &= 0xfff8; // make it a multiple of eight if (vid.conwidth < 320) 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]); if (vid.conheight < 200) 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); if (vid.conheight > scr_height) vid.conheight = scr_height; if (vid.conwidth > scr_width) vid.conwidth = scr_width; vid.width = vid.conwidth; vid.height = vid.conheight; vid.aspect = ((float)vid.height / (float)vid.width) * (320.0 / 240.0); vid.numpages = 2; InitSig(); // trap evil signals GL_Init(); snprintf(gldir, sizeof(gldir), "%s/glquake", com_gamedir); Sys_mkdir (gldir); VID_SetPalette(palette); // Check for 3DFX Extensions and initialize them. VID_Init8bitPalette(); Con_Printf ("Video mode %dx%d initialized.\n", scr_width, scr_height); vid.recalc_refdef = 1; // force a surface cache flush } 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_InitCvars () { } void VID_LockBuffer ( void ) { } void VID_UnlockBuffer ( void ) { } void VID_SetCaption (char *text) { }