mirror of
https://github.com/isometimes/rpi4-osdev
synced 2024-11-12 13:20:39 +00:00
128 lines
2.6 KiB
C
128 lines
2.6 KiB
C
#include "include/wgt.h"
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#include "include/mem.h"
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// ######## REQUIRED FUNCTIONS ########
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unsigned long state0 = 1000;
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unsigned long state1 = 2000;
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unsigned long rand(void)
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{
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unsigned long s1 = state0;
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unsigned long s0 = state1;
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state0 = s0;
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s1 ^= s1 << 23;
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s1 ^= s1 >> 17;
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s1 ^= s0;
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s1 ^= s0 >> 26;
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state1 = s1;
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return state0 + state1;
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}
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// ######## STUB FUNCTIONS ########
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unsigned int kb = 0;
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unsigned int kbhit(void) {
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kb++;
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return kb / 500;
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}
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void getch(void) {
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wait_msec(0x500000);
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kb = 0;
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}
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// ######## WGT EXAMPLES ########
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void wgt24()
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{
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block screen1, screen2;
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color pal[256];
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int i;
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set_clock_rate(get_max_clock());
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mem_init();
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vga256 ();
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/* Note: This text will be on our second screen - used for wipes */
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wtextcolor (vgapal[15]); /* Use index 15 for text */
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wouttextxy (0, 0, NULL, "SCREEN BUFFER #2");
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wouttextxy (0, 50, NULL, "This screen is one of our 2 screens");
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wouttextxy (0, 58, NULL, "used to perform the wipe effect.");
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wouttextxy (46, 100, NULL, "Press a key to perform wipe");
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screen2 = wnewblock (0, 0, 319, 199); /* Allocate memory for screen2 */
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extern unsigned char _binary_bin_wgt1_pal_start[];
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wloadpalette (&_binary_bin_wgt1_pal_start[0], pal);
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wsetpalette (0, 255, pal);
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extern unsigned char _binary_bin_wgt2_blk_start[];
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screen1 = wloadblock (&_binary_bin_wgt2_blk_start[0]);
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getch();
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for (i = 0; i < 200; i++)
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{
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wwipe (0, 0, 319, i, screen1); /* Wipe screen down from right */
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delay (1);
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wwipe (319, 199,0, 199 - i, screen1); /* Wipe screen up from left */
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delay (1);
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}
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getch ();
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/* Now wipe on the black screen using horizontal lines meeting at middle */
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for (i = 0; i < 100; i++)
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{
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wwipe (0, i, 319, i, screen2);
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delay (1);
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wwipe (0, 199 - i, 319, 199 - i, screen2);
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delay (1);
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}
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getch ();
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/* Now perform a "circular" wipe, by going around the screen from center */
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for (i = 0; i < 320; i++)
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{
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wwipe (159, 99, i, 0, screen1);
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delay (1);
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}
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for (i = 0; i < 200; i++)
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{
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wwipe (159, 99, 319, i, screen1);
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delay (1);
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}
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for (i = 319; i >= 0; i--)
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{
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wwipe (159, 99, i, 199, screen1);
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delay (1);
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}
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for (i = 199; i >= 0; i--)
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{
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wwipe (159, 99, 0, i, screen1);
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delay (1);
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}
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getch ();
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/* Clear with black screen by wiping top to bottom */
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for (i = 0; i < 200; i++)
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{
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wwipe (0, i, 319, i, screen2);
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delay (1);
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}
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getch ();
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wfreeblock (screen1); /* remember to free that memory */
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wfreeblock (screen2);
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}
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void main()
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{
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wgt24();
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while (1);
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}
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