mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-12-12 05:31:59 +00:00
83ec2be2a6
This was needed to get crosshaircolor working correctly, but is likely another step towards resizable windows (the listener set types are generic for any viddef event, not just palette changes).
341 lines
8.7 KiB
C
341 lines
8.7 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 "QF/ui/view.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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#define vi (viddef.vid_internal)
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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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static view_t conview;
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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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viddef.conview = &conview;
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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.conview->xlen = con_width->int_val;
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conheight = (viddef.conview->xlen * 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.conview->ylen = 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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// update with the new palette
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vi->set_palette (vi->data, viddef.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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if (viddef.onPaletteChanged) {
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LISTENER_INVOKE (viddef.onPaletteChanged, &viddef);
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}
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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.conview->xlen = viddef.width;
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viddef.conview->ylen = 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 (vi->surf_cache_size) {
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cachesize = vi->surf_cache_size (vi->data,
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viddef.width, viddef.height);
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}
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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 (vi->flush_caches) {
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vi->flush_caches (vi->data);
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}
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free (viddef.surfcache);
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viddef.surfcache = NULL;
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}
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if (vi->init_buffers) {
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vi->init_buffers (vi->data);
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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.buffer = NULL;
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}
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// Allocate the new screen buffer
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viddef.buffer = calloc (buffersize, 1);
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if (!viddef.buffer) {
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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.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.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 (vi->init_caches) {
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vi->init_caches (vi->data, viddef.surfcache, cachesize);
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}
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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 (vi->flush_caches) {
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vi->flush_caches (vi->data);
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}
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}
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VISIBLE void
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VID_OnPaletteChange_AddListener (viddef_listener_t listener, void *data)
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{
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if (!viddef.onPaletteChanged) {
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viddef.onPaletteChanged = malloc (sizeof (*viddef.onPaletteChanged));
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LISTENER_SET_INIT (viddef.onPaletteChanged, 8);
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}
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LISTENER_ADD (viddef.onPaletteChanged, listener, data);
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}
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VISIBLE void
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VID_OnPaletteChange_RemoveListener (viddef_listener_t listener, void *data)
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{
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if (viddef.onPaletteChanged) {
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LISTENER_REMOVE (viddef.onPaletteChanged, listener, data);
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}
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}
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