mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-24 05:11:42 +00:00
dbd3d6502a
I never liked it, but with C2x coming out, it's best to handle bools properly. I haven't gone through all the uses of int as bool (I'll leave that for fixing when I encounter them), but this gets QF working with both c2x (really, gnu2x because of raw strings).
370 lines
8.5 KiB
C
370 lines
8.5 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/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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float vid_gamma;
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static cvar_t vid_gamma_cvar = {
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.name = "vid_gamma",
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.description =
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"Gamma correction",
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.default_value = "1",
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.flags = CVAR_ARCHIVE,
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.value = { .type = &cexpr_float, .value = &vid_gamma },
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};
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int vid_system_gamma;
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static cvar_t vid_system_gamma_cvar = {
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.name = "vid_system_gamma",
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.description =
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"Use system gamma control if available",
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.default_value = "1",
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.flags = CVAR_ARCHIVE,
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.value = { .type = &cexpr_int, .value = &vid_system_gamma },
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};
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bool 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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int vid_width;
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static cvar_t vid_width_cvar = {
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.name = "vid_width",
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.description =
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"screen width",
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.default_value = 0,
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.flags = CVAR_ROM,
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.value = { .type = &cexpr_int, .value = &vid_width },
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};
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int vid_height;
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static cvar_t vid_height_cvar = {
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.name = "vid_height",
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.description =
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"screen height",
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.default_value = 0,
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.flags = CVAR_ROM,
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.value = { .type = &cexpr_int, .value = &vid_height },
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};
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int vid_fullscreen;
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static cvar_t vid_fullscreen_cvar = {
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.name = "vid_fullscreen",
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.description =
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"Toggles fullscreen mode",
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.default_value = "0",
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.flags = CVAR_ARCHIVE,
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.value = { .type = &cexpr_int, .value = &vid_fullscreen },
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};
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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;
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vid_width_cvar.default_value = nva ("%d", def_w);
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vid_height_cvar.default_value = nva ("%d", def_h);
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Cvar_Register (&vid_width_cvar, 0, 0);
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Cvar_Register (&vid_height_cvar, 0, 0);
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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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vid_width = atoi (com_argv[pnum + 1]);
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if (!vid_width)
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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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vid_height = atoi (com_argv[pnum + 1]);
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if (!vid_height)
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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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vid_width = atoi (com_argv[pnum + 1]);
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vid_height = atoi (com_argv[pnum + 2]);
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if (!vid_width || !vid_height)
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Sys_Error ("VID: Bad window width/height");
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}
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// viddef.maxlowwidth = LOW_WIDTH;
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// viddef.maxlowheight = LOW_HEIGHT;
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viddef.width = vid_width;
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viddef.height = vid_height;
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}
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void
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VID_SetWindowSize (int width, int height)
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{
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if (width < 0 || height < 0) {
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Sys_Error ("VID_SetWindowSize: invalid size: %d, %d", width, height);
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}
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if (width != (int) viddef.width || height != (int) viddef.height) {
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viddef.width = width;
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viddef.height = height;
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if (viddef.onVidResize) {
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LISTENER_INVOKE (viddef.onVidResize, &viddef);
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}
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}
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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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void
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VID_UpdateGamma (void)
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{
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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) { // Have system, use it
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Sys_MaskPrintf (SYS_vid, "Setting hardware gamma to %g\n", vid_gamma);
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VID_BuildGammaTable (1.0); // hardware gamma wants a linear palette
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VID_SetGamma (vid_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", vid_gamma);
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VID_BuildGammaTable (vid_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->ctx, viddef.palette);
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}
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}
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static void
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vid_gamma_f (void *data, const cvar_t *cvar)
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{
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vid_gamma = bound (0.1, vid_gamma, 9.9);
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VID_UpdateGamma ();
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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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static int cvar_initialized;
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free (viddef.gammatable);
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free (viddef.palette);
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free (viddef.palette32);
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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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if (!cvar_initialized) {
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cvar_initialized = 1;
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Cvar_Register (&vid_gamma_cvar, vid_gamma_f, 0);
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}
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//VID_BuildGammaTable (vid_gamma);
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VID_UpdateGamma ();
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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_ClearMemory (void)
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{
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if (vi->flush_caches) {
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vi->flush_caches (vi->ctx);
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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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VISIBLE void
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VID_OnVidResize_AddListener (viddef_listener_t listener, void *data)
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{
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if (!viddef.onVidResize) {
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viddef.onVidResize = malloc (sizeof (*viddef.onVidResize));
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LISTENER_SET_INIT (viddef.onVidResize, 8);
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}
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LISTENER_ADD (viddef.onVidResize, listener, data);
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}
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VISIBLE void
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VID_OnVidResize_RemoveListener (viddef_listener_t listener, void *data)
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{
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if (viddef.onVidResize) {
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LISTENER_REMOVE (viddef.onVidResize, listener, data);
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}
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}
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static void
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VID_shutdown (void *data)
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{
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if (vid_system.shutdown) {
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vid_system.shutdown ();
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}
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free ((char *) vid_width_cvar.default_value);
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free ((char *) vid_height_cvar.default_value);
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free (viddef.gammatable);
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free (viddef.palette);
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free (viddef.palette32);
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if (viddef.onPaletteChanged) {
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DARRAY_CLEAR (viddef.onPaletteChanged);
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free (viddef.onPaletteChanged);
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}
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if (viddef.onVidResize) {
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DARRAY_CLEAR (viddef.onVidResize);
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free (viddef.onVidResize);
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}
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}
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VISIBLE void
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VID_Init (byte *palette, byte *colormap)
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{
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Sys_RegisterShutdown (VID_shutdown, 0);
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vid_system.init (palette, colormap);
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}
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VISIBLE void
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VID_SetPalette (byte *palette, byte *colormap)
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{
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vid_system.set_palette (palette, colormap);
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}
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static void
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vid_fullscreen_f (void *data, const cvar_t *var)
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{
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vid_system.update_fullscreen (vid_fullscreen);
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}
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VISIBLE void
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VID_Init_Cvars (void)
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{
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if (vid_system.update_fullscreen) {
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// A bit of a hack, but windows registers a vid_fullscreen command
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// and does fullscreen handling differently.
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Cvar_Register (&vid_fullscreen_cvar, vid_fullscreen_f, 0);
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}
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Cvar_Register (&vid_system_gamma_cvar, 0, 0);
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vid_system.init_cvars ();
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}
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