Motion Blur

Las descripciones de los efectos en esta página se refieren a los efectos predeterminados encontrados dentro de la pila de post-procesamiento.

Motion Blur is a common post-processing effect that simulates the blurring of an image when objects filmed by a camera are moving faster than the camera’s exposure time. This can be caused by rapidly moving objects or a long exposure time. Motion Blur is used to subtle effect in most types of games but exaggerated in some genres, such as racing games.

The Motion Blur techniques supplied in the post-processing stack are:

• Shutter Speed Simulation

• Multiple Frame Blending

Shutter Speed Simulation

Shutter Speed Simulation provides a more accurate representation of a camera’s blur properties. However, as it requires Motion Vector support it is more expensive and not supported on some platforms. It is the recommended technique for desktop and console platforms. This effect approximates Motion Blur by storing the motion of pixels on screen in a Velocity buffer. This buffer is then used to blur pixels based on the distance they have moved since the last frame was drawn.

Propiedades

Optimisation

• Reduce Sample Count

Restrictions

• Unsupported in VR

Requerimientos

• Motion Vectors

• Depth texture

• Shader model 3

Consulte la página Emulación y capacidades de hardware de gráficos para obtener más detalles y una lista de hardware compatible.

Multiple Frame Blending

The Multiple Frame Blending effect simply multiplies the previous four frames over the current frame, weighted towards the more recent frames. Whilst this effect will work on all platforms, as it does not require Motion Vector or Depth texture support, it requires storing two history buffers (luma and chroma) of the last four frames which uses memory.

Propiedades

Optimisation

• N/A

Requerimientos

• Shader model 3

Consulte la página Emulación y capacidades de hardware de gráficos para obtener más detalles y una lista de hardware compatible.

• 2017–05–24 Page published with no editorial review

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