Function DrawAlphaBlendedScreen

Descent3/weapon.cpp:1378–1410

Draws an alpha blended polygon over the entire 3d rendering scene The r,g,b floats specify the color

// Draws an alpha blended polygon over the entire 3d rendering scene
// The r,g,b floats specify the color
void DrawAlphaBlendedScreen(float r, float g, float b, float alpha) {
  g3Point *pntlist[4], points[4];
  ddgr_color color;
  int i;

  color = GR_RGB(r * 255, g * 255, b * 255);

  // Set our four corners to cover the screen
  points[0].p3_sx = 0;
  points[0].p3_sy = 0;
  points[1].p3_sx = Game_window_w;
  points[1].p3_sy = 0;
  points[2].p3_sx = Game_window_w;
  points[2].p3_sy = Game_window_h;
  points[3].p3_sx = 0;
  points[3].p3_sy = Game_window_h;

  for (i = 0; i < 4; i++) {
    points[i].p3_z = 0;
    points[i].p3_flags = PF_PROJECTED;
    pntlist[i] = &points[i];
  }

  rend_SetZBufferState(0);
  rend_SetTextureType(TT_FLAT);
  rend_SetAlphaType(AT_CONSTANT);
  rend_SetAlphaValue(alpha * 255);
  rend_SetLighting(LS_NONE);
  rend_SetFlatColor(color);

  rend_DrawPolygon2D(0, pntlist, 4);
  rend_SetZBufferState(1);
}

// Retreives the weapon in the weapon array based off of an 'index' from 0-19 (non-mapped
//	primary and secondaries)