summaryrefslogtreecommitdiff
path: root/src/i_video.h
blob: ff720922e389a13c93e079642f769f3f97497639 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
// Emacs style mode select   -*- C++ -*- 
//-----------------------------------------------------------------------------
//
// Copyright(C) 1993-1996 Id Software, Inc.
// Copyright(C) 2005 Simon Howard
//
// 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 the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
// 02111-1307, USA.
//
// DESCRIPTION:
//	System specific interface stuff.
//
//-----------------------------------------------------------------------------


#ifndef __I_VIDEO__
#define __I_VIDEO__

#include "doomtype.h"

// Screen width and height.

#define SCREENWIDTH  320
#define SCREENHEIGHT 200

// Screen width used for "squash" scale functions

#define SCREENWIDTH_4_3 256

// Screen height used for "stretch" scale functions.

#define SCREENHEIGHT_4_3 240

#define MAX_MOUSE_BUTTONS 8

typedef struct
{
    // Screen width and height

    int width;
    int height;

    // Initialisation function to call when using this mode.
    // Called with a pointer to the Doom palette.
    //
    // If NULL, no init function is called.

    void (*InitMode)(byte *palette);
    
    // Function to call to draw the screen from the source buffer.
    // Return true if draw was successful.

    boolean (*DrawScreen)(int x1, int y1, int x2, int y2);

    // If true, this is a "poor quality" mode.  The autoadjust 
    // code should always attempt to use a different mode to this 
    // mode in fullscreen.

    boolean poor_quality;
} screen_mode_t;

typedef boolean (*grabmouse_callback_t)(void);

// Called by D_DoomMain,
// determines the hardware configuration
// and sets up the video mode
void I_InitGraphics (void);

void I_GraphicsCheckCommandLine(void);

void I_ShutdownGraphics(void);

// Takes full 8 bit values.
void I_SetPalette (byte* palette);
int I_GetPaletteIndex(int r, int g, int b);

void I_UpdateNoBlit (void);
void I_FinishUpdate (void);

void I_ReadScreen (byte* scr);

void I_BeginRead (void);
void I_EndRead (void);

void I_SetWindowTitle(char *title);

void I_CheckIsScreensaver(void);
void I_SetGrabMouseCallback(grabmouse_callback_t func);

void I_DisplayFPSDots(boolean dots_on);
void I_BindVideoVariables(void);

void I_InitWindowTitle(void);
void I_InitWindowIcon(void);

// Called before processing any tics in a frame (just after displaying a frame).
// Time consuming syncronous operations are performed here (joystick reading).

void I_StartFrame (void);

// Called before processing each tic in a frame.
// Quick syncronous operations are performed here.

void I_StartTic (void);

// Enable the loading disk image displayed when reading from disk.

void I_EnableLoadingDisk(void);

extern char *video_driver;
extern boolean screenvisible;

extern float mouse_acceleration;
extern int mouse_threshold;
extern int vanilla_keyboard_mapping;
extern boolean screensaver_mode;
extern int usegamma;
extern byte *I_VideoBuffer;

extern int screen_width;
extern int screen_height;
extern int screen_bpp;
extern int fullscreen;
extern int aspect_ratio_correct;

#endif