10 static unsigned char tex[32 * 32] __attribute__((section(".iwram")));
14 int i, j, tx, ty, angle, depth, nframes, backbuf, zoffs;
15 static uint16_t *vram[] = { (uint16_t*)VRAM_LFB_FB0_ADDR, (uint16_t*)VRAM_LFB_FB1_ADDR };
18 uint32_t tun, *tunptr, *tuncache;
20 REG_DISPCNT = 4 | DISPCNT_BG2 | DISPCNT_FB1;
24 cdst = (uint16_t*)CRAM_BG_ADDR;
26 for(i=0; i<256; i++) {
27 *cdst++ = CONV_RGB24_RGB15(csrc[0], csrc[1], csrc[2]);
31 fillblock_16byte(vram[0], 0xffffffff, 240 * 160 / 16);
32 fillblock_16byte(vram[1], 0xffffffff, 240 * 160 / 16);
34 if(!(tuncache = malloc(240 * 160 * 2))) {
35 panic(get_pc(), "failed to allocate tuntab");
37 memcpy(tuncache, tunmap, 240 * 160 * 2);
38 memcpy(tex, tuncross_pixels, 32 * 32);
42 backbuf = ++nframes & 1;
48 for(i=0; i<160 * 240 / 2; i++) {
49 //for(j=1; j<240/2; j++) {
55 depth = (tun >> 8) & 0xff;
56 tx = (angle >> 1) & 0x1f;
57 ty = ((depth >> 1) + zoffs) & 0x1f;
58 pp = tex[(ty << 5) + tx];
60 angle = (tun >> 16) & 0xff;
61 depth = (tun >> 24) & 0xff;
62 tx = (angle >> 1) & 0x1f;
63 ty = ((depth >> 1) + zoffs) & 0x1f;
64 pp |= (uint16_t)tex[(ty << 5) + tx] << 8;