#include <stdio.h>
#include <stdlib.h>
#include <math.h>
+#include <assert.h>
#include <imago2.h>
#include "tpool.h"
-#include "tunnel.h"
+#include "demo.h"
+#include "screen.h"
#define TEX_FNAME "data/grid.png"
#define TEX_USCALE 4
#define USCALE 2
#define VSCALE 1
-extern unsigned long time_msec;
+static int init(void);
+static void destroy(void);
+static void start(long trans_time);
+static void stop(long trans_time);
+static void draw(void);
-static void (*draw_tunnel_range)(void*, int, int);
+static void (*draw_tunnel_range)(void*, int, int, long);
-static void draw_tunnel_range16(void *pixels, int starty, int num_lines);
-static void draw_tunnel_range32(void *pixels, int starty, int num_lines);
+static void draw_tunnel_range16(void *pixels, int starty, int num_lines, long tm);
+static void draw_tunnel_range32(void *pixels, int starty, int num_lines, long tm);
static int count_bits(unsigned int x);
static int count_zeros(unsigned int x);
+static struct screen scr = {
+ "tunnel",
+ init,
+ destroy,
+ start,
+ stop,
+ draw
+};
+
static int xsz, ysz, vxsz, vysz;
static unsigned int *tunnel_map;
static unsigned char *tunnel_fog;
static struct thread_pool *tpool;
+static long trans_start, trans_dur;
+static int trans_dir;
+
-int init_tunnel(int x, int y, int bpp)
+struct screen *tunnel_screen(void)
+{
+ return &scr;
+}
+
+
+static int init(void)
{
int i, j, n;
unsigned int *tmap;
unsigned char *fog;
- float aspect = (float)x / (float)y;
+ float aspect = (float)fb_width / (float)fb_height;
- switch(bpp) {
+ switch(fb_depth) {
case 16:
draw_tunnel_range = draw_tunnel_range16;
break;
draw_tunnel_range = draw_tunnel_range32;
break;
default:
- fprintf(stderr, "unsupported color depth: %d\n", bpp);
+ fprintf(stderr, "unsupported color depth: %d\n", fb_depth);
return -1;
}
- xsz = x;
- ysz = y;
+ xsz = fb_width;
+ ysz = fb_height;
vxsz = xsz / USCALE;
vysz = ysz / VSCALE;
return 0;
}
-void destroy_tunnel(void)
+static void destroy(void)
{
tpool_destroy(tpool);
free(tunnel_map);
free(tunnel_fog);
}
+static void start(long trans_time)
+{
+ trans_start = time_msec;
+ trans_dur = trans_time;
+ trans_dir = 1;
+}
+
+static void stop(long trans_time)
+{
+ trans_start = time_msec;
+ trans_dur = trans_time;
+ trans_dir = -1;
+}
+
#define NUM_WORK_ITEMS 32
static struct work {
void *pixels;
int starty, num_lines;
+ long tm;
} work[NUM_WORK_ITEMS];
static void work_func(void *cls)
{
struct work *w = (struct work*)cls;
- draw_tunnel_range(w->pixels, w->starty, w->num_lines);
+ draw_tunnel_range(w->pixels, w->starty, w->num_lines, w->tm);
}
-void draw_tunnel(void *pixels)
+static void draw(void)
{
int i, num_lines = vysz / NUM_WORK_ITEMS;
+ int draw_lines = num_lines;
+
+ if(trans_dir) {
+ long interval = time_msec - trans_start;
+ int progr = num_lines * interval / trans_dur;
+ if(trans_dir < 0) {
+ draw_lines = num_lines - progr - 1;
+ } else {
+ draw_lines = progr;
+ }
+ if(progr >= num_lines) {
+ trans_dir = 0;
+ }
+ }
+
for(i=0; i<NUM_WORK_ITEMS; i++) {
- work[i].pixels = pixels;
+ work[i].pixels = fb_pixels;
work[i].starty = i * num_lines;
- work[i].num_lines = num_lines;
+ work[i].num_lines = draw_lines;
+ work[i].tm = time_msec;
tpool_enqueue(tpool, work + i, work_func, 0);
}
}
#define PACK_RGB16(r, g, b) \
- (((((r) >> 3) & 0x1f) << 11) | ((((g) >> 2) & 0x3f) << 5) | ((b) & 0x1f))
+ (((((r) >> 3) & 0x1f) << 11) | ((((g) >> 2) & 0x3f) << 5) | (((b) >> 3) & 0x1f))
#define PACK_RGB32(r, g, b) \
((((r) & 0xff) << 16) | (((g) & 0xff) << 8) | ((b) & 0xff))
-#define PUTPIXEL(pixtype, col) \
- do { \
- int k; \
- pixtype *ptr = pixels; \
- for(k=0; k<VSCALE; k++) { \
- switch(USCALE) { \
- case 4: \
- ptr[3] = col; \
- case 3: \
- ptr[2] = col; \
- case 2: \
- ptr[1] = col; \
- case 1: \
- *ptr = col; \
- } \
- ptr += xsz; \
- } \
- } while(0)
-
-static void draw_tunnel_range16(void *pix, int starty, int num_lines)
+static void draw_tunnel_range16(void *pix, int starty, int num_lines, long tm)
{
int i, j;
unsigned int *tmap = tunnel_map + starty * vxsz;
unsigned char *fog = tunnel_fog + starty * vxsz;
- long toffs = time_msec / 4;
- unsigned short *pixels = (unsigned short*)pix + starty * xsz * VSCALE;
+ long toffs = tm / 4;
+ unsigned int *pixels = (unsigned int*)pix + starty * (xsz >> 1);
for(i=0; i<num_lines; i++) {
for(j=0; j<vxsz; j++) {
tunnel_color(&r, &g, &b, toffs, *tmap++, *fog++);
col = PACK_RGB16(r, g, b);
-
- PUTPIXEL(unsigned short, col);
- pixels += USCALE;
+ *pixels++ = col;
}
- pixels += xsz * (VSCALE - 1);
}
}
-static void draw_tunnel_range32(void *pix, int starty, int num_lines)
+static void draw_tunnel_range32(void *pix, int starty, int num_lines, long tm)
{
int i, j;
unsigned int *tmap = tunnel_map + starty * vxsz;
unsigned char *fog = tunnel_fog + starty * vxsz;
- long toffs = time_msec / 4;
+ long toffs = tm / 4;
unsigned int *pixels = (unsigned int*)pix + starty * xsz * VSCALE;
for(i=0; i<num_lines; i++) {
tunnel_color(&r, &g, &b, toffs, *tmap++, *fog++);
col = PACK_RGB32(r, g, b);
- PUTPIXEL(unsigned int, col);
- pixels += USCALE;
+ *pixels++ = col;
+ *pixels++ = col;
}
- pixels += xsz * (VSCALE - 1);
}
}