Xash3D FWGS engine.
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/*
vid_common.c - common vid component
Copyright (C) 2018 a1batross, Uncle Mike
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 3 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.
*/
#include "common.h"
#include "client.h"
#include "mod_local.h"
#include "input.h"
#include "vid_common.h"
#include "platform/platform.h"
#define WINDOW_NAME XASH_ENGINE_NAME " Window" // Half-Life
convar_t *vid_displayfrequency;
convar_t *vid_fullscreen;
convar_t *vid_brightness;
convar_t *vid_gamma;
convar_t *vid_highdpi;
vidstate_t vidState;
glwstate_t glw_state;
convar_t *window_xpos;
convar_t *window_ypos;
/*
=================
VID_StartupGamma
=================
*/
void VID_StartupGamma( void )
{
BuildGammaTable( vid_gamma->value, vid_brightness->value );
Con_Reportf( "VID_StartupGamma: gamma %g brightness %g\n", vid_gamma->value, vid_brightness->value );
ClearBits( vid_brightness->flags, FCVAR_CHANGED );
ClearBits( vid_gamma->flags, FCVAR_CHANGED );
}
/*
=================
VID_InitDefaultResolution
=================
*/
void VID_InitDefaultResolution( void )
{
// we need to have something valid here
// until video subsystem initialized
vidState.width = 640;
vidState.height = 480;
}
/*
=================
R_SaveVideoMode
=================
*/
void R_SaveVideoMode( int w, int h )
{
vidState.width = w;
vidState.height = h;
host.window_center_x = w / 2;
host.window_center_y = h / 2;
Cvar_SetValue( "width", w );
Cvar_SetValue( "height", h );
// check for 4:3 or 5:4
if( w * 3 != h * 4 && w * 4 != h * 5 )
vidState.wideScreen = true;
else vidState.wideScreen = false;
}
/*
=================
VID_GetModeString
=================
*/
const char *VID_GetModeString( int vid_mode )
{
vidmode_t *vidmode;
if( vid_mode < 0 || vid_mode > R_MaxVideoModes() )
return NULL;
if( !( vidmode = R_GetVideoMode( vid_mode ) ) )
return NULL;
return vidmode->desc;
}
/*
==================
VID_CheckChanges
check vid modes and fullscreen
==================
*/
void VID_CheckChanges( void )
{
if( FBitSet( cl_allow_levelshots->flags, FCVAR_CHANGED ))
{
//GL_FreeTexture( cls.loadingBar );
SCR_RegisterTextures(); // reload 'lambda' image
ClearBits( cl_allow_levelshots->flags, FCVAR_CHANGED );
}
if( host.renderinfo_changed )
{
if( VID_SetMode( ))
{
SCR_VidInit(); // tell the client.dll what vid_mode has changed
}
else
{
Sys_Error( "Can't re-initialize video subsystem\n" );
}
host.renderinfo_changed = false;
}
}
static void VID_Mode_f( void )
{
int w, h;
switch( Cmd_Argc() )
{
case 2:
{
vidmode_t *vidmode;
vidmode = R_GetVideoMode( Q_atoi( Cmd_Argv( 1 )) );
if( !vidmode )
{
Con_Print( S_ERROR "unable to set mode, backend returned null" );
return;
}
w = vidmode->width;
h = vidmode->height;
break;
}
case 3:
{
w = Q_atoi( Cmd_Argv( 1 ));
h = Q_atoi( Cmd_Argv( 2 ));
break;
}
default:
Msg( S_USAGE "vid_mode <modenum>|<width height>\n" );
return;
}
R_ChangeDisplaySettings( w, h, Cvar_VariableInteger( "fullscreen" ) );
}
static void SetWidthAndHeightFromCommandLine()
{
int width, height;
Sys_GetIntFromCmdLine( "-width", &width );
Sys_GetIntFromCmdLine( "-height", &height );
if( width < 1 || height < 1 )
{
// Not specified or invalid, so don't bother.
return;
}
R_SaveVideoMode( width, height );
}
static void SetFullscreenModeFromCommandLine( )
{
#ifndef __ANDROID__
if ( Sys_CheckParm("-fullscreen") )
{
Cvar_Set( "fullscreen", "1" );
}
else if ( Sys_CheckParm( "-windowed" ) )
{
Cvar_Set( "fullscreen", "0" );
}
#endif
}
void VID_Init()
{
// system screen width and height (don't suppose for change from console at all)
Cvar_Get( "width", "0", FCVAR_RENDERINFO|FCVAR_VIDRESTART, "screen width" );
Cvar_Get( "height", "0", FCVAR_RENDERINFO|FCVAR_VIDRESTART, "screen height" );
window_xpos = Cvar_Get( "_window_xpos", "130", FCVAR_RENDERINFO, "window position by horizontal" );
window_ypos = Cvar_Get( "_window_ypos", "48", FCVAR_RENDERINFO, "window position by vertical" );
vid_gamma = Cvar_Get( "gamma", "2.5", FCVAR_ARCHIVE, "gamma amount" );
vid_brightness = Cvar_Get( "brightness", "0.0", FCVAR_ARCHIVE, "brightness factor" );
vid_displayfrequency = Cvar_Get ( "vid_displayfrequency", "0", FCVAR_RENDERINFO|FCVAR_VIDRESTART, "fullscreen refresh rate" );
vid_fullscreen = Cvar_Get( "fullscreen", "0", FCVAR_RENDERINFO|FCVAR_VIDRESTART, "enable fullscreen mode" );
vid_highdpi = Cvar_Get( "vid_highdpi", "1", FCVAR_RENDERINFO|FCVAR_VIDRESTART, "enable High-DPI mode" );
// a1ba: planned to be named vid_mode for compability
// but supported mode list is filled by backends, so numbers are not portable any more
Cmd_AddCommand( "vid_setmode", VID_Mode_f, "display video mode" );
// Set screen resolution and fullscreen mode if passed in on command line.
// This is done after executing opengl.cfg, as the command line values should take priority.
SetWidthAndHeightFromCommandLine();
SetFullscreenModeFromCommandLine();
R_Init(); // init renderer
}