Nút Đường Đi của Ánh Sáng (Light Path Node)

../../../_images/render_shader-nodes_input_light-path_node.png — Nút Đường Đi của Ánh Sáng.

The Light Path node is used to find out for which kind of incoming ray the shader is being executed; particularly useful for non-physically-based tricks. More information about the meaning of each type is in the Light Paths documentation.

Đầu Vào (Inputs)

Nút này không có đầu vào.

Tính Chất (Properties)

Nút này không có Tính Chất nào cả.

Đầu Ra (Outputs)

Tia máy quay phim (Is Camera Ray): 1.0 if shading is executed for a camera ray, otherwise 0.0.
Là Tia Bóng Tối (Is Shadow Ray): 1.0 if shading is executed for a shadow ray, otherwise 0.0.
Tia Khuếch Tán (Is Diffuse Ray): 1.0 if shading is executed for a diffuse ray, otherwise 0.0.
Tia Bóng Bẩy (Is Glossy Ray): 1.0 if shading is executed for a glossy ray, otherwise 0.0.
Là Tia Lập Dị Duy Cycles (Cycles Only) (Is Singular Ray Cycles Only): 1.0 if shading is executed for a singular ray, otherwise 0.0.
Là Tia Phản Xạ Duy Cycles (Cycles Only) (Is Reflection Ray Cycles Only): 1.0 if shading is executed for a reflection ray, otherwise 0.0.
Là Tia Truyền Xạ Duy Cycles (Cycles Only) (Is Transmission Ray Cycles Only): 1.0 if shading is executed for a transmission ray, otherwise 0.0.
Chiều Dài Của Tia Xạ Duy Cycles) (Ray Length Cycles Only): Distance traveled by the light ray from the last bounce or camera.
Độ Sâu của Tia (Ray Depth): Number of times the ray has been reflected or transmitted on interaction with a surface.

Ghi chú

Passing through a transparent shader does not count as a normal "bounce".
Độ Sâu Khuếch Tán Duy Cycles (Cycles Only) (Diffuse Depth Cycles Only): Number of times the ray has gone through diffuse reflection or transmission.
Độ Sâu của Ánh Bóng Bẩy Duy Cycles (Cycles Only) (Glossy Depth Cycles Only): Number of times the ray has gone through glossy reflection or transmission.
Chiều Sâu Của Độ Trong Suốt Duy Cycles (Transparent Depth Cycles Only): Returns the number of transparent surfaces passed through.
Độ Sâu Truyền Xạ Duy Cycles) (Transmission Depth Cycles Only): Replace a Transmission light path after X bounces with another shader, e.g. a Diffuse one. This can be used to avoid black surfaces, due to low amount of max bounces.