Function DebugGraph_Render

Descent3/debuggraph.cpp:274–326

#define TOP_T 50

void DebugGraph_Render(void) {
  if (graph_bmp == -1) {
    // create the bitmap
    graph_bmp = bm_AllocBitmap(64, 64, 0);
    if (graph_bmp > BAD_BITMAP_HANDLE) {
      uint16_t *data = bm_data(graph_bmp, 0);
      for (int i = 0; i < 64 * 64; i++) {
        data[i] = GR_RGB16(0, 0, 0) | OPAQUE_FLAG;
      }
    }
  }
  if (graph_bmp <= BAD_BITMAP_HANDLE)
    return;

  if (graph_mask == 0)
    return;

  rend_SetAlphaType(AT_CONSTANT_TEXTURE);
  rend_SetAlphaValue(240);
  rend_SetLighting(LS_NONE);
  rend_SetColorModel(CM_MONO);
  rend_SetOverlayType(OT_NONE);
  rend_SetWrapType(WT_CLAMP);
  rend_SetFiltering(0);

  rend_DrawScaledBitmap(TOP_L, TOP_T, TOP_L + 256, TOP_T + 64, graph_bmp, 0, 0, 1, 1);

  int bit = 0x01;
  tGraphNode *node;
  bool multi_game = (bool)((Game_mode & GM_MULTI) != 0);
  bool ok_to_render;

  for (int i = 0; i < graph_num_nodes; i++) {
    node = DebugGraph_FindNode(i);
    ok_to_render = true;

    if (node && (graph_mask & bit)) {
      if (multi_game) {
        if (!(node->init_data.flags & DGF_MULTIPLAYER))
          ok_to_render = false;
      } else {
        if (!(node->init_data.flags & DGF_SINGLEPLAYER))
          ok_to_render = false;
      }

      if (ok_to_render)
        node->Render();
    }
    bit = bit << 1;
  }

  rend_SetFiltering(1);
}

////////////////////////////////////////////
void tGraphNode::Initialize(tAddDebugGraph *data) {