Class: Rendering::GpuTimer

Inherits:
Object
  • Object
show all
Defined in:
lib/engine/rendering/gpu_timer.rb

Class Method Summary collapse

Class Method Details

.enable ⇒ Object 



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# File 'lib/engine/rendering/gpu_timer.rb', line 10

def enable
  @enabled = true
  @frame_count = 0
  @stages = []
  @queries = {}
  puts "GPU Profiler: ON"
end

.enabled? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/engine/rendering/gpu_timer.rb', line 6

def enabled?
  @enabled ||= false
end

.measure(stage) ⇒ Object 



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# File 'lib/engine/rendering/gpu_timer.rb', line 18

def measure(stage)
  unless enabled?
    return yield
  end

  query_id = query_for(stage)
  Engine::GL.BeginQuery(Engine::GL::TIME_ELAPSED, query_id)
  result = yield
  Engine::GL.EndQuery(Engine::GL::TIME_ELAPSED)
  result
end

.print_results ⇒ Object 



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# File 'lib/engine/rendering/gpu_timer.rb', line 30

def print_results
  return unless enabled?

  @frame_count += 1
  return unless (@frame_count % 60) == 0

  results = {}
  @stages.each do |stage|
    buf = ' ' * 8
    Engine::GL.GetQueryObjectui64v(@queries[stage], Engine::GL::QUERY_RESULT, buf)
    results[stage] = buf.unpack1('Q') / 1_000_000.0
  end

  total = results.values.sum
  puts "\n=== GPU Timing ==="
  @stages.each do |stage|
    ms = results[stage]
    pct = total > 0 ? (ms / total * 100).round(1) : 0
    bar = "█" * (pct / 5).to_i
    puts format("%-20s %6.2f ms (%5.1f%%) %s", stage, ms, pct, bar)
  end
  puts format("%-20s %6.2f ms", "TOTAL", total)
  puts "===================="
end