message: Add zoom check for graph time tick marks
diff: @@ -1433,6 +1433,8 @@ void TraceWin::render_graph_vblanks( class graph_info_t *pgi )
  float x0 = gi.ts_to_x( tsstart );
  float dx = gi.w * MSECS_PER_SEC * gi.tsdxrcp;
  + if ( dx > 4.0f )
  + {
  for ( ; x0 <= gi.w; x0 += dx )
  {
  imgui_drawrect( gi.pos.x + x0, imgui_scale( 1.0f ),
  @@ -1442,11 +1444,14 @@ void TraceWin::render_graph_vblanks( class graph_info_t *pgi )
  if ( dx >= 35.0f )
  {
  for ( int i = 1; i < 4; i++ )
  + {
  imgui_drawrect( gi.pos.x + x0 + i * dx / 4, imgui_scale( 1.0f ),
  gi.pos.y, imgui_scale( 4.0f ),
  col_get( col_Lime ) );
  }
  }
  + }
  + }
  // Draw vblank events on every graph.
  const std::vector< uint32_t > &vblank_locs = m_trace_events->get_event_locs( "drm_vblank_event" );
  