specialframes.cpp

   1 #include <cstdint>
   2 #include "render.hpp"
   3
   4 struct render_list_entry
   5 {
   6         uint32_t codepoint;
   7         uint32_t x;
   8         uint32_t y;
   9         uint32_t scale;
  10 };
  11
  12 struct render_list_entry rl_nosignal[] = {
  13         {'N', 4, 168, 7},
  14         {'O', 60, 168, 7},
  15         {'S', 172, 168, 7},
  16         {'I', 228, 168, 7},
  17         {'G', 284, 168, 7},
  18         {'N', 340, 168, 7},
  19         {'A', 396, 168, 7},
  20         {'L', 452, 168, 7},
  21         {0, 0, 0, 0}
  22 };
  23
  24 struct render_list_entry rl_corrupt[] = {
  25         {'S', 88, 56, 7},
  26         {'Y', 144, 56, 7},
  27         {'S', 200, 56, 7},
  28         {'T', 256, 56, 7},
  29         {'E', 312, 56, 7},
  30         {'M', 368, 56, 7},
  31         {'S', 116, 168, 7},
  32         {'T', 172, 168, 7},
  33         {'A', 224, 168, 7},
  34         {'T', 280, 168, 7},
  35         {'E', 336, 168, 7},
  36         {'C', 60, 280, 7},
  37         {'O', 116, 280, 7},
  38         {'R', 172, 280, 7},
  39         {'R', 228, 280, 7},
  40         {'U', 284, 280, 7},
  41         {'P', 340, 280, 7},
  42         {'T', 396, 280, 7},
  43         {0, 0, 0, 0}
  44 };
  45
  46 extern uint32_t fontdata[];
  47
  48 void draw_special_screen(uint16_t* target, struct render_list_entry* rlist)
  49 {
  50         while(rlist->scale) {
  51                 int32_t x;
  52                 int32_t y;
  53                 auto g = find_glyph(rlist->codepoint, 0, 0, 0, x, y);
  54                 for(uint32_t j = 0; j < 16; j++) {
  55                         for(uint32_t i = 0; i < 8; i++) {
  56                                 uint32_t slice = g.second + j / 4;
  57                                 uint32_t bit = 31 - ((j % 4) * 8 + i);
  58                                 uint32_t value = (fontdata[slice] >> bit) & 1;
  59                                 if(value) {
  60                                         uint32_t basex = rlist->x + rlist->scale * i;
  61                                         uint32_t basey = rlist->y + rlist->scale * j;
  62                                         for(uint32_t j2 = 0; j2 < rlist->scale; j2++)
  63                                                 for(uint32_t i2 = 0; i2 < rlist->scale; i2++)
  64                                                         target[(basey + j2) * 512 + (basex + i2)] = 0x7FFF;
  65                                 }
  66                         }
  67                 }
  68                 rlist++;
  69         }
  70 }
  71
  72 void draw_nosignal(uint16_t* target)
  73 {
  74         for(unsigned i = 0; i < 512 * 448; i++)
  75                 target[i] = 0x1F;
  76         draw_special_screen(target, rl_nosignal);
  77 }
  78
  79 void draw_corrupt(uint16_t* target)
  80 {
  81         for(unsigned i = 0; i < 512 * 448; i++)
  82                 target[i] = 0x1F;
  83         draw_special_screen(target, rl_corrupt);
  84 }