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simgraph16.cc
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/*
* Copyright 2010 Simutrans contributors
* Available under the Artistic License (see license.txt)
*/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <math.h>
#include "macros.h"
#include "simtypes.h"
#include "font.h"
#include "pathes.h"
#include "simconst.h"
#include "simsys.h"
#include "simmem.h"
#include "simdebug.h"
#include "besch/bild_besch.h"
#include "unicode.h"
#include "simticker.h"
#ifdef _MSC_VER
# include <io.h>
# define W_OK 2
#else
# include <unistd.h>
#endif
// first: find out, which copy routines we may use!
#ifndef __GNUC__
# undef USE_C
# define USE_C
# ifndef _M_IX86
# define ALIGN_COPY
# endif
#else
# if defined(USE_C) || !defined(__i386__)
# undef USE_C
# define USE_C
# if GCC_ATLEAST(4, 2) || !defined(__i386__)
# define ALIGN_COPY
# warning "Needs to use slower copy with GCC > 4.2.x"
# endif
# endif
#endif
#if MULTI_THREAD>1
#include <pthread.h>
// currently just redrawing/rezooming
static pthread_mutex_t rezoom_recode_img_mutex;
#endif
#include "simgraph.h"
// undefine for debugging the update routines
//#define DEBUG_FLUSH_BUFFER
/*
* Hajo: RGB 1555
*/
typedef uint16 PIXVAL;
#ifdef USE_SOFTPOINTER
static int softpointer = -1;
#endif
static int standard_pointer = -1;
#ifdef USE_SOFTPOINTER
/*
* Die Icon Leiste muss neu gezeichnet werden wenn der Mauszeiger darueber
* schwebt
*/
int old_my = -1;
#endif
/*
* Hajo: Current clipping rectangle
*/
static clip_dimension clip_rect;
// and the variables for polygon clipping
/*
* struct to hold the information about visible area
* at screen line y
* associated to some clipline
*/
struct xrange {
int sx,sy;
KOORD_VAL y;
bool non_convex_active;
};
#define MAX_POLY_CLIPS 6
static xrange xranges[MAX_POLY_CLIPS];
static uint8 clip_ribi[MAX_POLY_CLIPS];
static int number_of_clips =0;
static uint8 active_ribi = 15; // set all to active
/* Flag, if we have Unicode font => do unicode (UTF8) support! *
* @author prissi
* @date 29.11.04
*/
static bool has_unicode = false;
static font_type large_font = { 0, 0, 0, NULL, NULL };
// needed for resizing gui
int large_font_ascent = 9;
int large_font_total_height = 11;
#define MAX_PLAYER_COUNT (16)
#define RGBMAPSIZE (0x8000+LIGHT_COUNT+16)
/*
* Hajo: mapping tables for RGB 555 to actual output format
* plus the special (player, day&night) colors appended
*
* 0x0000 - 0x7FFF: RGB colors
* 0x8000 - 0x800F: Player colors
* 0x8010 - : Day&Night special colors
*/
static PIXVAL rgbmap_day_night[RGBMAPSIZE];
/*
* Hajo: same as rgbmap_day_night, but always daytime colors
*/
static PIXVAL rgbmap_all_day[RGBMAPSIZE];
/**
* Hajo:used by pixel copy functions, is one of rgbmap_day_night
* rgbmap_all_day
*/
static PIXVAL *rgbmap_current = 0;
/*
* Hajo: mapping table for specialcolors (AI player colors)
* to actual output format - day&night mode
* 16 sets of 16 colors
*/
static PIXVAL specialcolormap_day_night[256];
/*
* Hajo: mapping table for specialcolors (AI player colors)
* to actual output format - all day mode
* 16 sets of 16 colors
*/
static PIXVAL specialcolormap_all_day[256];
// offsets of first and second comany color
static uint8 player_offsets[MAX_PLAYER_COUNT][2];
/*
* Hajo: Image map descriptor struture
*/
struct imd {
sint16 base_x; // min x offset
sint16 base_y; // min y offset
sint16 base_w; // width
sint16 base_h; // height
sint16 x; // current (zoomed) min x offset
sint16 y; // current (zoomed) min y offset
sint16 w; // current (zoomed) width
sint16 h; // current (zoomed) height
uint32 len; // base image data size (used for allocation purposes only)
uint8 recode_flags; // divers flags for recoding
uint8 player_flags; // 128 = free/needs recode, otherwise coded to this color in player_data
PIXVAL* data; // current data, zoomed and adapted to output format RGB 555 or RGB 565
PIXVAL* zoom_data; // zoomed original data
PIXVAL* base_data; // original image data
PIXVAL* player_data; // current data coded for player1 (since many building belong to him)
};
// flags for recoding
#define FLAG_ZOOMABLE (1)
#define FLAG_PLAYERCOLOR (2)
#define FLAG_REZOOM (4)
#define FLAG_NORMAL_RECODE (8)
#define FLAG_POSITION_CHANGED (16)
#define NEED_PLAYER_RECODE (128)
static KOORD_VAL disp_width = 640;
static KOORD_VAL disp_actual_width = 640;
static KOORD_VAL disp_height = 480;
/*
* Image table
*/
static struct imd* images = NULL;
/*
* Number of loaded images
*/
static image_id anz_images = 0;
/*
* Number of allocated entries for images
* (>= anz_images)
*/
static image_id alloc_images = 0;
/*
* Output framebuffer
*/
static PIXVAL* textur = NULL;
/*
* Hajo: dirty tile management strcutures
*/
#define DIRTY_TILE_SIZE 16
#define DIRTY_TILE_SHIFT 4
static unsigned char *tile_dirty = NULL;
static unsigned char *tile_dirty_old = NULL;
static int tiles_per_line = 0;
static int tile_lines = 0;
static int tile_buffer_length = 0;
static int light_level = 0;
static int night_shift = -1;
/*
* Hajo: speical colors during daytime
*/
COLOR_VAL display_day_lights[LIGHT_COUNT*3] = {
0x57, 0x65, 0x6F, // Dark windows, lit yellowish at night
0x7F, 0x9B, 0xF1, // Lighter windows, lit blueish at night
0xFF, 0xFF, 0x53, // Yellow light
0xFF, 0x21, 0x1D, // Red light
0x01, 0xDD, 0x01, // Green light
0x6B, 0x6B, 0x6B, // Non-darkening grey 1 (menus)
0x9B, 0x9B, 0x9B, // Non-darkening grey 2 (menus)
0xB3, 0xB3, 0xB3, // non-darkening grey 3 (menus)
0xC9, 0xC9, 0xC9, // Non-darkening grey 4 (menus)
0xDF, 0xDF, 0xDF, // Non-darkening grey 5 (menus)
0xE3, 0xE3, 0xFF, // Nearly white light at day, yellowish light at night
0xC1, 0xB1, 0xD1, // Windows, lit yellow
0x4D, 0x4D, 0x4D, // Windows, lit yellow
0xE1, 0x00, 0xE1, // purple light for signals
0x01, 0x01, 0xFF, // blue light
};
/*
* Hajo: speical colors during nighttime
*/
COLOR_VAL display_night_lights[LIGHT_COUNT*3] = {
0xD3, 0xC3, 0x80, // Dark windows, lit yellowish at night
0x80, 0xC3, 0xD3, // Lighter windows, lit blueish at night
0xFF, 0xFF, 0x53, // Yellow light
0xFF, 0x21, 0x1D, // Red light
0x01, 0xDD, 0x01, // Green light
0x6B, 0x6B, 0x6B, // Non-darkening grey 1 (menus)
0x9B, 0x9B, 0x9B, // Non-darkening grey 2 (menus)
0xB3, 0xB3, 0xB3, // non-darkening grey 3 (menus)
0xC9, 0xC9, 0xC9, // Non-darkening grey 4 (menus)
0xDF, 0xDF, 0xDF, // Non-darkening grey 5 (menus)
0xFF, 0xFF, 0xE3, // Nearly white light at day, yellowish light at night
0xD3, 0xC3, 0x80, // Windows, lit yellow
0xD3, 0xC3, 0x80, // Windows, lit yellow
0xE1, 0x00, 0xE1, // purple light for signals
0x01, 0x01, 0xFF, // blue light
};
// the players colors and colors for simple drawing operations
// each eight colors are corresponding to a player color
static const COLOR_VAL special_pal[224*3]=
{
36, 75, 103,
57, 94, 124,
76, 113, 145,
96, 132, 167,
116, 151, 189,
136, 171, 211,
156, 190, 233,
176, 210, 255,
88, 88, 88,
107, 107, 107,
125, 125, 125,
144, 144, 144,
162, 162, 162,
181, 181, 181,
200, 200, 200,
219, 219, 219,
17, 55, 133,
27, 71, 150,
37, 86, 167,
48, 102, 185,
58, 117, 202,
69, 133, 220,
79, 149, 237,
90, 165, 255,
123, 88, 3,
142, 111, 4,
161, 134, 5,
180, 157, 7,
198, 180, 8,
217, 203, 10,
236, 226, 11,
255, 249, 13,
86, 32, 14,
110, 40, 16,
134, 48, 18,
158, 57, 20,
182, 65, 22,
206, 74, 24,
230, 82, 26,
255, 91, 28,
34, 59, 10,
44, 80, 14,
53, 101, 18,
63, 122, 22,
77, 143, 29,
92, 164, 37,
106, 185, 44,
121, 207, 52,
0, 86, 78,
0, 108, 98,
0, 130, 118,
0, 152, 138,
0, 174, 158,
0, 196, 178,
0, 218, 198,
0, 241, 219,
74, 7, 122,
95, 21, 139,
116, 37, 156,
138, 53, 173,
160, 69, 191,
181, 85, 208,
203, 101, 225,
225, 117, 243,
59, 41, 0,
83, 55, 0,
107, 69, 0,
131, 84, 0,
155, 98, 0,
179, 113, 0,
203, 128, 0,
227, 143, 0,
87, 0, 43,
111, 11, 69,
135, 28, 92,
159, 45, 115,
183, 62, 138,
230, 74, 174,
245, 121, 194,
255, 156, 209,
20, 48, 10,
44, 74, 28,
68, 99, 45,
93, 124, 62,
118, 149, 79,
143, 174, 96,
168, 199, 113,
193, 225, 130,
54, 19, 29,
82, 44, 44,
110, 69, 58,
139, 95, 72,
168, 121, 86,
197, 147, 101,
226, 173, 115,
255, 199, 130,
8, 11, 100,
14, 22, 116,
20, 33, 139,
26, 44, 162,
41, 74, 185,
57, 104, 208,
76, 132, 231,
96, 160, 255,
43, 30, 46,
68, 50, 85,
93, 70, 110,
118, 91, 130,
143, 111, 170,
168, 132, 190,
193, 153, 210,
219, 174, 230,
63, 18, 12,
90, 38, 30,
117, 58, 42,
145, 78, 55,
172, 98, 67,
200, 118, 80,
227, 138, 92,
255, 159, 105,
11, 68, 30,
33, 94, 56,
54, 120, 81,
76, 147, 106,
98, 174, 131,
120, 201, 156,
142, 228, 181,
164, 255, 207,
64, 0, 0,
96, 0, 0,
128, 0, 0,
192, 0, 0,
255, 0, 0,
255, 64, 64,
255, 96, 96,
255, 128, 128,
0, 128, 0,
0, 196, 0,
0, 225, 0,
0, 240, 0,
0, 255, 0,
64, 255, 64,
94, 255, 94,
128, 255, 128,
0, 0, 128,
0, 0, 192,
0, 0, 224,
0, 0, 255,
0, 64, 255,
0, 94, 255,
0, 106, 255,
0, 128, 255,
128, 64, 0,
193, 97, 0,
215, 107, 0,
255, 128, 0,
255, 128, 0,
255, 149, 43,
255, 170, 85,
255, 193, 132,
8, 52, 0,
16, 64, 0,
32, 80, 4,
48, 96, 4,
64, 112, 12,
84, 132, 20,
104, 148, 28,
128, 168, 44,
164, 164, 0,
193, 193, 0,
215, 215, 0,
255, 255, 0,
255, 255, 32,
255, 255, 64,
255, 255, 128,
255, 255, 172,
32, 4, 0,
64, 20, 8,
84, 28, 16,
108, 44, 28,
128, 56, 40,
148, 72, 56,
168, 92, 76,
184, 108, 88,
64, 0, 0,
96, 8, 0,
112, 16, 0,
120, 32, 8,
138, 64, 16,
156, 72, 32,
174, 96, 48,
192, 128, 64,
32, 32, 0,
64, 64, 0,
96, 96, 0,
128, 128, 0,
144, 144, 0,
172, 172, 0,
192, 192, 0,
224, 224, 0,
64, 96, 8,
80, 108, 32,
96, 120, 48,
112, 144, 56,
128, 172, 64,
150, 210, 68,
172, 238, 80,
192, 255, 96,
32, 32, 32,
48, 48, 48,
64, 64, 64,
80, 80, 80,
96, 96, 96,
172, 172, 172,
236, 236, 236,
255, 255, 255,
41, 41, 54,
60, 45, 70,
75, 62, 108,
95, 77, 136,
113, 105, 150,
135, 120, 176,
165, 145, 218,
198, 191, 232,
};
/*
* Hajo: tile raster width
*/
KOORD_VAL tile_raster_width = 16; // zoomed
KOORD_VAL base_tile_raster_width = 16; // original
// Knightly : variables for storing currently used image procedure set and tile raster width
display_image_proc display_normal = NULL;
display_image_proc display_color = NULL;
display_blend_proc display_blend = NULL;
signed short current_tile_raster_width = 0;
/*
* Hajo: Zoom factor
*/
#define MAX_ZOOM_FACTOR (9)
static uint32 zoom_factor = 3;
static sint32 zoom_num[MAX_ZOOM_FACTOR+1] = { 2, 3, 4, 1, 3, 5, 1, 3, 1, 1 };
static sint32 zoom_den[MAX_ZOOM_FACTOR+1] = { 1, 2, 3, 1, 4, 8, 2, 8, 4, 8 };
/* changes the raster width after loading */
KOORD_VAL display_set_base_raster_width(KOORD_VAL new_raster)
{
KOORD_VAL old = base_tile_raster_width;
base_tile_raster_width = new_raster;
tile_raster_width = (new_raster * zoom_num[zoom_factor]) / zoom_den[zoom_factor];
return old;
}
// ----------------------------------- clipping routines ------------------------------------------
sint16 display_get_width(void)
{
return disp_actual_width;
}
// only use, if you are really really sure!
void display_set_actual_width(KOORD_VAL w)
{
disp_actual_width = w;
}
sint16 display_get_height(void)
{
return disp_height;
}
void display_set_height(KOORD_VAL const h)
{
disp_height = h;
}
/**
* this sets width < 0 if the range is out of bounds
* so check the value after calling and before displaying
* @author Hj. Malthaner
*/
static int clip_wh(KOORD_VAL *x, KOORD_VAL *width, const KOORD_VAL min_width, const KOORD_VAL max_width)
{
if (*width <= 0) {
*width = 0;
return 0;
}
if (*x + *width > max_width) {
*width = max_width - *x;
}
if (*x < min_width) {
const KOORD_VAL xoff = min_width - *x;
*width += *x-min_width;
*x = min_width;
return xoff;
}
return 0;
}
/**
* places x and w within bounds left and right
* if nothing to show, returns false
* @author Niels Roest
*/
static bool clip_lr(KOORD_VAL *x, KOORD_VAL *w, const KOORD_VAL left, const KOORD_VAL right)
{
const KOORD_VAL l = *x; // leftmost pixel
const sint32 r = (sint32)*x + (sint32)*w; // rightmost pixel
if (*w <= 0 || l >= right || r <= left) {
*w = 0;
return false;
}
// there is something to show.
if (l < left) {
*w -= left - l;
*x = left;
}
if (r > right) {
*w -= (KOORD_VAL)(r - right);
}
return *w > 0;
}
/**
* Ermittelt Clipping Rechteck
* @author Hj. Malthaner
*/
clip_dimension display_get_clip_wh()
{
return clip_rect;
}
/**
* Setzt Clipping Rechteck
* @author Hj. Malthaner
*
* here, a pixel at coordinate xp is displayed if
* clip. x <= xp < clip.xx
* the right-most pixel of an image located at xp with width w is displayed if
* clip.x < xp+w <= clip.xx
* analogously for the y coordinate
*/
void display_set_clip_wh(KOORD_VAL x, KOORD_VAL y, KOORD_VAL w, KOORD_VAL h)
{
clip_wh(&x, &w, 0, disp_width);
clip_wh(&y, &h, 0, disp_height);
clip_rect.x = x;
clip_rect.y = y;
clip_rect.w = w;
clip_rect.h = h;
clip_rect.xx = x + w; // watch out, clips to KOORD_VAL max
clip_rect.yy = y + h; // watch out, clips to KOORD_VAL max
}
class clip_line_t {
private:
// line from (x0,y0) to (x1 y1)
// clip (do not draw) everything right from the ray (x0,y0)->(x1,y1)
// pixels on the ray are not drawn
// (not_convex) if y0>=y1 then clip along the path (x0,-inf)->(x0,y0)->(x1,y1)
// (not_convex) if y0<y1 then clip along the path (x0,y0)->(x1,y1)->(x1,+inf)
int x0,y0;
int dx,dy,sdy,sdx;
int inc;
bool non_convex;
public:
void clip_from_to(int x0_,int y0_, int x1, int y1, bool non_convex_) {
x0 = x0_;
dx = x1-x0;
y0 = y0_;
dy = y1-y0;
non_convex = non_convex_;
int steps = (abs(dx) > abs(dy) ? abs(dx) : abs(dy));
if (steps == 0) {
return;
}
sdx = (dx << 16) / steps;
sdy = (dy << 16) / steps;
// to stay right from the line
// left border: xmin <= x
// right border: x < xmax
if (dy>0) {
if (dy > dx) {
inc = 1 << 16;
}
else {
inc = (dx << 16)/dy;
}
}
else if (dy<0) {
if (dy < dx) {
inc = 0; // (+1)-1 << 16;
}
else {
inc = (1 << 16) - (dx << 16) / dy;
}
}
}
// clip if
// ( x-x0) . ( y1-y0 )
// ( y-y0) . (-(x1-x0)) < 0
// -- initialize the clipping
// has to be called before image will be drawn
// return interval for x coordinate
inline void get_x_range(KOORD_VAL y, xrange &r, bool use_non_convex) const {
// do everything for the previous row
y--;
r.y = y;
r.non_convex_active = false;
if (non_convex && use_non_convex && y<y0 && y<(y0+dy)) {
r.non_convex_active = true;
}
else if (dy != 0) {
// init Bresenham algorithm
const int t = ((y-y0) << 16) / sdy;
// sx >> 16 = x
// sy >> 16 = y
r.sx = t * sdx + inc + (x0 << 16);
r.sy = t * sdy + (y0 << 16);
}
}
// -- step one line down, return interval for x coordinate
inline void inc_y(xrange &r, int &xmin, int &xmax) const {
r.y ++;
// switch between clip vertical and along ray
if (r.non_convex_active) {
if (r.y==min(y0,y0+dy)) {
r.non_convex_active = false;
if (dy != 0) {
// init Bresenham algorithm
const int t = ((r.y-y0) << 16) / sdy;
// sx >> 16 = x
// sy >> 16 = y
r.sx = t * sdx + inc + (x0 << 16);
r.sy = t * sdy + (y0 << 16);
if (dy > 0) {
const int r_xmin = r.sx >> 16;
if (xmin < r_xmin) xmin = r_xmin;
}
else {
const int r_xmax = r.sx >> 16;
if (xmax > r_xmax) xmax = r_xmax;
}
}
}
else {
if (dy<0) {
const int r_xmax = x0+dx;
if (xmax > r_xmax) xmax = r_xmax;
}
else {
const int r_xmin = x0+1;
if (xmin < r_xmin) xmin = r_xmin;
}
}
}
// go along the ray, Bresenham
else if (dy!=0) {
if (dy > 0) {
do {
r.sx += sdx;
r.sy += sdy;
} while ((r.sy >> 16) < r.y);
const int r_xmin = r.sx >> 16;
if (xmin < r_xmin) xmin = r_xmin;
}
else {
do {
r.sx -= sdx;
r.sy -= sdy;
} while ((r.sy >> 16) < r.y);
const int r_xmax = r.sx >> 16;
if (xmax > r_xmax) xmax = r_xmax;
}
}
// horicontal clip
else {
const bool clip = dx*(r.y-y0)>0;
if (clip) {
// invisible row
xmin = +1;
xmax = -1;
}
}
}
};
static clip_line_t poly_clips[MAX_POLY_CLIPS];
/*
* Add clipping line through (x0,y0) and (x1,y1)
* with associated ribi
* if ribi & 16 then non-convex clipping.
*/
void add_poly_clip(int x0,int y0, int x1, int y1, int ribi)
{
if (number_of_clips < MAX_POLY_CLIPS) {
poly_clips[number_of_clips].clip_from_to(x0,y0,x1,y1,ribi&16);
clip_ribi[number_of_clips] = ribi&15;
number_of_clips++;
}
}
/*
* Clears all clipping lines
*/
void clear_all_poly_clip()
{
number_of_clips = 0;
active_ribi = 15; // set all to active
}
/*
* Activates clipping lines associated with ribi
* ie if clip_ribi[i] & active_ribi
*/
void activate_ribi_clip(int ribi)
{
active_ribi = ribi;
}
/*
* Initialize clipping region for image starting at screen line y
*/
static inline void init_ranges(int y)
{
for (uint8 i=0; i<number_of_clips; i++) {
if (clip_ribi[i] & active_ribi) {
poly_clips[i].get_x_range(y,xranges[i], active_ribi & 16);
}
}
}
/*
* Returns left/right border of visible area
* Computes l/r border for the next line (ie y+1)
* takes also clipping rectangle into account
*/
inline void get_xrange_and_step_y(int &xmin, int &xmax)
{
xmin = clip_rect.x;
xmax = clip_rect.xx;
for (uint8 i=0; i<number_of_clips; i++) {
if (clip_ribi[i] & active_ribi) {
poly_clips[i].inc_y(xranges[i], xmin, xmax);
}
}
}
// ------------------------------ dirty tile stuff --------------------------------
/*
* simutrans keeps a list of dirty areas, i.e. places that received new graphics
* and must be copied to the screen after an update
*/
static inline void mark_tile_dirty(const int x, const int y)
{
const int bit = x + y * tiles_per_line;
#if 0
assert(bit / 8 < tile_buffer_length);
#endif
tile_dirty[bit >> 3] |= 1 << (bit & 7);
}
static inline void mark_tiles_dirty(const int x1, const int x2, const int y)
{
int bit = y * tiles_per_line + x1;
const int end = bit + x2 - x1;
do {
#if 0
assert(bit / 8 < tile_buffer_length);
#endif
tile_dirty[bit >> 3] |= 1 << (bit & 7);
} while (++bit <= end);
}
static inline int is_tile_dirty(const int x, const int y)
{
const int bit = x + y * tiles_per_line;
const int bita = bit >> 3;
const int bitb = 1 << (bit & 7);
return (tile_dirty[bita] | tile_dirty_old[bita]) & bitb;
}
/**
* Markiert ein Tile as schmutzig, ohne Clipping
* @author Hj. Malthaner
*/
static void mark_rect_dirty_nc(KOORD_VAL x1, KOORD_VAL y1, KOORD_VAL x2, KOORD_VAL y2)
{
// floor to tile size
x1 >>= DIRTY_TILE_SHIFT;
y1 >>= DIRTY_TILE_SHIFT;
x2 >>= DIRTY_TILE_SHIFT;
y2 >>= DIRTY_TILE_SHIFT;
#if 0
assert(x1 >= 0);
assert(x1 < tiles_per_line);
assert(y1 >= 0);
assert(y1 < tile_lines);
assert(x2 >= 0);
assert(x2 < tiles_per_line);
assert(y2 >= 0);
assert(y2 < tile_lines);
#endif
for (; y1 <= y2; y1++) {
mark_tiles_dirty(x1, x2, y1);
}
}
/**
* Markiert ein Tile as schmutzig, mit Clipping
* @author Hj. Malthaner
*/
void mark_rect_dirty_wc(KOORD_VAL x1, KOORD_VAL y1, KOORD_VAL x2, KOORD_VAL y2)
{
// inside display?
if (x2 >= 0 && y2 >= 0 && x1 < disp_width && y1 < disp_height) {
if (x1 < 0) {
x1 = 0;
}
if (y1 < 0) {
y1 = 0;
}
if (x2 >= disp_width) {
x2 = disp_width - 1;
}
if (y2 >= disp_height) {
y2 = disp_height - 1;
}
mark_rect_dirty_nc(x1, y1, x2, y2);
}
}
/**
* Mark the whole screen as dirty.
*
*/
void mark_screen_dirty()
{
mark_rect_dirty_nc(0, 0, disp_width-1, disp_height - 1);
}
/**
* the area of this image need update
* @author Hj. Malthaner
*/
void display_mark_img_dirty(unsigned bild, KOORD_VAL xp, KOORD_VAL yp)
{
if (bild < anz_images) {
mark_rect_dirty_wc(
xp + images[bild].x,
yp + images[bild].y,
xp + images[bild].x + images[bild].w - 1,
yp + images[bild].y + images[bild].h - 1
);