mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-14 17:01:22 +00:00
37d35811e3
vid.aspect is removed (for now) as it was not really the right idea (I really didn't know what I was doing at the time). Nicely, this *almost* fixes the fov bug on fresh installs: the view is now properly upside-down rather than just flipped vertically (ie, it's now rotated 180 degrees).
309 lines
8.2 KiB
C
309 lines
8.2 KiB
C
/*
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vid.c
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general video driver functions
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Copyright (C) 1996-1997 Id Software, Inc.
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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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#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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#include <math.h>
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#include "QF/console.h"
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#include "QF/cvar.h"
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#include "QF/mathlib.h"
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#include "QF/qargs.h"
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#include "QF/sys.h"
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#include "QF/va.h"
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#include "compat.h"
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#include "d_iface.h"
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#include "vid_internal.h"
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/* Software and hardware gamma support */
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#define viddef (*r_data->vid)
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cvar_t *vid_gamma;
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cvar_t *vid_system_gamma;
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cvar_t *con_width; // FIXME: Try to move with rest of con code
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cvar_t *con_height; // FIXME: Try to move with rest of con code
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qboolean vid_gamma_avail; // hardware gamma availability
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VISIBLE unsigned int d_8to24table[256];
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/* Screen size */
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cvar_t *vid_width;
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cvar_t *vid_height;
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cvar_t *vid_fullscreen;
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void
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VID_GetWindowSize (int def_w, int def_h)
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{
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int pnum, conheight;
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vid_width = Cvar_Get ("vid_width", va (0, "%d", def_w), CVAR_NONE, NULL,
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"screen width");
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vid_height = Cvar_Get ("vid_height", va (0, "%d", def_h), CVAR_NONE, NULL,
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"screen height");
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if ((pnum = COM_CheckParm ("-width"))) {
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if (pnum >= com_argc - 1)
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Sys_Error ("VID: -width <width>");
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Cvar_Set (vid_width, com_argv[pnum + 1]);
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if (!vid_width->int_val)
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Sys_Error ("VID: Bad window width");
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}
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if ((pnum = COM_CheckParm ("-height"))) {
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if (pnum >= com_argc - 1)
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Sys_Error ("VID: -height <height>");
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Cvar_Set (vid_height, com_argv[pnum + 1]);
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if (!vid_height->int_val)
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Sys_Error ("VID: Bad window height");
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}
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if ((pnum = COM_CheckParm ("-winsize"))) {
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if (pnum >= com_argc - 2)
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Sys_Error ("VID: -winsize <width> <height>");
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Cvar_Set (vid_width, com_argv[pnum + 1]);
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Cvar_Set (vid_height, com_argv[pnum + 2]);
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if (!vid_width->int_val || !vid_height->int_val)
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Sys_Error ("VID: Bad window width/height");
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}
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Cvar_SetFlags (vid_width, vid_width->flags | CVAR_ROM);
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Cvar_SetFlags (vid_height, vid_height->flags | CVAR_ROM);
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// viddef.maxlowwidth = LOW_WIDTH;
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// viddef.maxlowheight = LOW_HEIGHT;
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viddef.width = vid_width->int_val;
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viddef.height = vid_height->int_val;
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con_width = Cvar_Get ("con_width", va (0, "%d", viddef.width), CVAR_NONE,
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NULL, "console effective width (GL only)");
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if ((pnum = COM_CheckParm ("-conwidth"))) {
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if (pnum >= com_argc - 1)
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Sys_Error ("VID: -conwidth <width>");
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Cvar_Set (con_width, com_argv[pnum + 1]);
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}
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// make con_width a multiple of 8 and >= 320
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Cvar_Set (con_width, va (0, "%d", max (con_width->int_val & ~7, 320)));
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Cvar_SetFlags (con_width, con_width->flags | CVAR_ROM);
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viddef.conwidth = con_width->int_val;
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conheight = (viddef.conwidth * viddef.height) / viddef.width;
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con_height = Cvar_Get ("con_height", va (0, "%d", conheight), CVAR_NONE,
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NULL, "console effective height (GL only)");
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if ((pnum = COM_CheckParm ("-conheight"))) {
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if (pnum >= com_argc - 1)
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Sys_Error ("VID: -conheight <width>");
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Cvar_Set (con_height, com_argv[pnum + 1]);
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}
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// make con_height >= 200
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Cvar_Set (con_height, va (0, "%d", max (con_height->int_val, 200)));
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Cvar_SetFlags (con_height, con_height->flags | CVAR_ROM);
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viddef.conheight = con_height->int_val;
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Con_CheckResize (); // Now that we have a window size, fix console
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}
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/* GAMMA FUNCTIONS */
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static void
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VID_BuildGammaTable (double gamma)
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{
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int i;
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if (gamma == 1.0) { // linear, don't bother with the math
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for (i = 0; i < 256; i++) {
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viddef.gammatable[i] = i;
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}
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} else {
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double g = 1.0 / gamma;
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int v;
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for (i = 0; i < 256; i++) { // Build/update gamma lookup table
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v = (int) ((255.0 * pow ((double) i / 255.0, g)) + 0.5);
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viddef.gammatable[i] = bound (0, v, 255);
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}
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}
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}
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/*
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VID_UpdateGamma
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This is a callback to update the palette or system gamma whenever the
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vid_gamma Cvar is changed.
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*/
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void
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VID_UpdateGamma (cvar_t *vid_gamma)
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{
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double gamma = bound (0.1, vid_gamma->value, 9.9);
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byte *p24;
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byte *p32;
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const byte *col;
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int i;
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viddef.recalc_refdef = 1; // force a surface cache flush
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if (vid_gamma_avail && vid_system_gamma->int_val) { // Have system, use it
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Sys_MaskPrintf (SYS_vid, "Setting hardware gamma to %g\n", gamma);
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VID_BuildGammaTable (1.0); // hardware gamma wants a linear palette
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VID_SetGamma (gamma);
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p24 = viddef.palette;
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p32 = viddef.palette32;
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col = viddef.basepal;
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for (i = 0; i < 256; i++) {
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*p32++ = *p24++ = *col++;
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*p32++ = *p24++ = *col++;
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*p32++ = *p24++ = *col++;
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*p32++ = 255;
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}
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p32[-1] = 0; // color 255 is transparent
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} else { // We have to hack the palette
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Sys_MaskPrintf (SYS_vid, "Setting software gamma to %g\n", gamma);
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VID_BuildGammaTable (gamma);
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p24 = viddef.palette;
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p32 = viddef.palette32;
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col = viddef.basepal;
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for (i = 0; i < 256; i++) {
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*p32++ = *p24++ = viddef.gammatable[*col++];
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*p32++ = *p24++ = viddef.gammatable[*col++];
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*p32++ = *p24++ = viddef.gammatable[*col++];
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*p32++ = 255;
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}
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p32[-1] = 0; // color 255 is transparent
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viddef.vid_internal->set_palette (viddef.palette); // update with the new palette
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}
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}
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/*
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VID_InitGamma
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Initialize the vid_gamma Cvar, and set up the palette
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*/
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void
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VID_InitGamma (const byte *pal)
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{
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int i;
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double gamma = 1.0;
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viddef.gammatable = malloc (256);
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viddef.basepal = pal;
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viddef.palette = malloc (256 * 3);
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viddef.palette32 = malloc (256 * 4);
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if ((i = COM_CheckParm ("-gamma"))) {
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gamma = atof (com_argv[i + 1]);
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}
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gamma = bound (0.1, gamma, 9.9);
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vid_gamma = Cvar_Get ("vid_gamma", va (0, "%f", gamma), CVAR_ARCHIVE,
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VID_UpdateGamma, "Gamma correction");
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VID_BuildGammaTable (vid_gamma->value);
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}
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void
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VID_InitBuffers (void)
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{
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int buffersize, zbuffersize, cachesize = 1;
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// No console scaling in the sw renderer
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viddef.conwidth = viddef.width;
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viddef.conheight = viddef.height;
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Con_CheckResize ();
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// Calculate the sizes we want first
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buffersize = viddef.rowbytes * viddef.height;
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zbuffersize = viddef.width * viddef.height * sizeof (*viddef.zbuffer);
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if (viddef.vid_internal->surf_cache_size)
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cachesize = viddef.vid_internal->surf_cache_size (viddef.width,
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viddef.height);
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// Free the old z-buffer
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if (viddef.zbuffer) {
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free (viddef.zbuffer);
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viddef.zbuffer = NULL;
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}
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// Free the old surface cache
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if (viddef.surfcache) {
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if (viddef.vid_internal->flush_caches)
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viddef.vid_internal->flush_caches ();
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free (viddef.surfcache);
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viddef.surfcache = NULL;
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}
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if (viddef.vid_internal->init_buffers) {
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viddef.vid_internal->init_buffers ();
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} else {
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// Free the old screen buffer
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if (viddef.buffer) {
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free (viddef.buffer);
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viddef.conbuffer = viddef.buffer = NULL;
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}
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// Allocate the new screen buffer
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viddef.conbuffer = viddef.buffer = calloc (buffersize, 1);
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if (!viddef.conbuffer) {
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Sys_Error ("Not enough memory for video mode");
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}
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}
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// Allocate the new z-buffer
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viddef.zbuffer = calloc (zbuffersize, 1);
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if (!viddef.zbuffer) {
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free (viddef.buffer);
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viddef.conbuffer = viddef.buffer = NULL;
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Sys_Error ("Not enough memory for video mode");
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}
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// Allocate the new surface cache; free the z-buffer if we fail
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viddef.surfcache = calloc (cachesize, 1);
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if (!viddef.surfcache) {
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free (viddef.buffer);
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free (viddef.zbuffer);
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viddef.conbuffer = viddef.buffer = NULL;
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viddef.zbuffer = NULL;
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Sys_Error ("Not enough memory for video mode");
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}
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if (viddef.vid_internal->init_caches)
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viddef.vid_internal->init_caches (viddef.surfcache, cachesize);
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}
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void
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VID_ClearMemory (void)
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{
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if (viddef.vid_internal->flush_caches)
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viddef.vid_internal->flush_caches ();
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}
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