git.mutantstargoat.com Git - psx_test1/blob - src/main.c

   1 #include "gpu.h"
   2 #include "gte.h"
   3 #include "psxregs.h"
   4 #include "sintab.h"
   5
   6 static struct gpu_gvert triangle[] = {{0xff0000}, {0x00ff00}, {0x0000ff}};
   7
   8 static struct gte_svector svtri[] = {
   9         {-0x1000, -0x800}, {0, 0x1000}, {0x1000, -0x800}
  10 };
  11
  12 int dbg;
  13
  14 int main(void)
  15 {
  16         int i;
  17         unsigned int frame = 0;
  18         int16_t rotmat[9] = {0x1000, 0, 0, 0, 0x1000, 0, 0, 0, 0x1000};
  19         int trans[3] = {160, 120, 0};
  20         int resv[3];
  21
  22         gte_init();
  23
  24         gpu_reset();
  25         gpu_setmode(320, 264, 15, 50);
  26         gpu_display(1);
  27
  28         REG_GP0 = GPCMD(GP0_TEXPG) | TEXPG_DRAWDISP | TEXPG_DITHER;
  29
  30         gpu_cliprect(0, 0, 320, 264);
  31         gpu_origin(0, 0);
  32
  33         for(;;) {
  34                 rotmat[0] = rotmat[4] = COS(frame);
  35                 rotmat[1] = SIN(frame);
  36                 rotmat[3] = -SIN(frame);
  37
  38                 gte_loadrot(rotmat);
  39                 //gte_loadtrans(trans);
  40                 for(i=0; i<3; i++) {
  41                         gte_loadsvec0(svtri + i);
  42                         gte_cmd_rot();
  43                         gte_getvec(resv);
  44
  45                         triangle[i].x = (resv[0] >> 6) + 160;
  46                         triangle[i].y = (resv[1] >> 6) + 130;
  47                 }
  48
  49                 gpu_fillrect(0, 0, 320, 264, 0x202020);
  50
  51                 gpu_draw_gouraud(GP0_GTRI, triangle, 3);
  52
  53                 for(i=0; i<100000; i++) {
  54                         asm volatile("nop; nop; nop; nop");
  55                 }
  56
  57                 frame++;
  58         }
  59         return 0;
  60 }