/* vid_common_gl.c Common OpenGL video driver functions Copyright (C) 1996-1997 Id Software, Inc. Copyright (C) 2000 Marcus Sundberg [mackan@stacken.kth.se] 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 #include #ifdef HAVE_GL_GLEXT_H #include #endif #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 "console.h" #include "glquake.h" #include "input.h" #include "qargs.h" #include "quakefs.h" #include "sbar.h" #define WARP_WIDTH 320 #define WARP_HEIGHT 200 #ifdef HAVE_DLOPEN static void *dlhand = NULL; #endif //unsigned short d_8to16table[256]; unsigned int d_8to24table[256]; unsigned char d_15to8table[65536]; cvar_t *vid_mode; /*-----------------------------------------------------------------------*/ int texture_mode = GL_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; qboolean is8bit = false; cvar_t *vid_use8bit; /*-----------------------------------------------------------------------*/ /* 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 } 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]; float dist, bestdist; static qboolean palflag = false; // // 8 8 8 encoding // // Con_Printf("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; // 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. // 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/15to8.pal", com_gamedir); COM_CreatePath (s); if ((f = Qopen (s, "wb")) != NULL) { Qwrite (f, d_15to8table, 1 << 15); Qclose (f); } } } /* =============== GL_Init_Common =============== */ void GL_Init_Common (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); glClearColor (0, 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); CheckMultiTextureExtensions (); } /* ================= GL_BeginRendering ================= */ void GL_BeginRendering (int *x, int *y, int *width, int *height) { *x = *y = 0; *width = scr_width; *height = scr_height; } qboolean VID_Is8bit (void) { return is8bit; } #ifdef HAVE_TDFXGL void 3 dfx_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 (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 Shared_Init8bitPalette (); dlclose (dlhand); dlhand = NULL; Con_Printf ("not found.\n"); } #endif #ifdef GL_SHARED_TEXTURE_PALETTE_EXT void Shared_Init8bitPalette () { int i; char thePalette[256 * 3]; char *oldPalette, *newPalette; if (strstr (gl_extensions, "GL_EXT_shared_texture_palette") == NULL) return; #ifdef HAVE_TDFXGL glColorTableEXT_FUNC load_texture = NULL; load_texture = (void *) dlsym (dlhand, "glColorTableEXT"); #endif Con_Printf ("8-bit GL extensions enabled.\n"); 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++; } is8bit = true; if strstr (gl_renderer, "Mesa Glide") { #ifdef HAVE_TDFXGL load_texture (GL_SHARED_TEXTURE_PALETTE_EXT, GL_RGB, 256, GL_RGB, GL_UNSIGNED_BYTE, (void *) thePalette); #endif } else glColorTable (GL_SHARED_TEXTURE_PALETTE_EXT, GL_RGB, 256, GL_RGB, GL_UNSIGNED_BYTE, (void *) thePalette); } #endif void VID_Init8bitPalette (void) { if (COM_CheckParm ("-no8bit")) { Con_Printf ("disabled.\n"); return; } vid_use8bit = Cvar_Get ("vid_use8bit", "0", CVAR_ROM, "Whether to use Shared Palettes."); if (vid_use8bit->value) { #ifdef HAVE_TDFXGL 3 dfx_Init8bitPalette (); #else #ifdef GL_SHARED_TEXTURE_PALETTE_EXT Shared_Init8bitPalette (); #endif #endif } } 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) { }