Emission Rate is a technical term that is extremely important in rendering and optimizing game graphics (technical art). Explanation of Emission Rate, which is a parameter for the number of particles continuously generated over time (per second) in a particle system.
An example in the real world: ``The degree to which a faucet twists the water spray (increase or decrease in water volume)'' that is emitted from a hose.
Emission Rate is ``the degree to which a faucet is twisted (amount of water pumped out per second)'' when water is squirted from a hose. If you turn on the faucet a little (Rate: 5), water droplets will only come out in spots, giving it a stale look. If you turn the faucet as hard as you can (Rate: 500), you will get a tremendously dense stream of water (highly concentrated visuals). However, if you put out too much water, the drain (GPU processing) will not be able to keep up and the floor will be flooded (frame rate will drop), so you need to determine the ``optimal amount of twisting'' that will maintain the desired visual density.
Illustration: Emission Infographic that clearly illustrates the basic processing flow and mechanism of Rate (emission rate) in Japanese notation
Detailed mechanism and operating principle
Adjust the value of the emission rate (Rate over Time) to an appropriate density that matches the scene, and increase or decrease the amount of emission according to the character's movement speed as necessary. Distance” is also used.