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ambient-lighting [2023/03/29 17:33] – created steph.jorgensenambient-lighting [2023/04/03 16:46] (current) – steph.jorgensen
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-=====Ambient Lighting=====+======Ambient lighting======
  
 Ambient light is light that exists in the scene but is not coming directly from the sun / light source. It is light from the environment around the subject. Without any ambient light, shadows would be completely black. Ambient light is light that exists in the scene but is not coming directly from the sun / light source. It is light from the environment around the subject. Without any ambient light, shadows would be completely black.
  
-===Color/Intensity===+=====Color/intensity=====
  
 The color and intensity of the ambient light can be adjusted in the [[light|Light Properties]] when the light is selected. Lighting presets are also available to quickly switch between lighting scenarios. The color and intensity of the ambient light can be adjusted in the [[light|Light Properties]] when the light is selected. Lighting presets are also available to quickly switch between lighting scenarios.
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 Ambient light uses three colors to set up the environment: sky, horizon, and ground. These colors are interpolated to form the sky and ground in the background of the [[tooltree_window|Tree Window]]. Ambient light uses three colors to set up the environment: sky, horizon, and ground. These colors are interpolated to form the sky and ground in the background of the [[tooltree_window|Tree Window]].
  
-===HDRI===+=====HDRI=====
  
 In addition to setting up the lighting environment with 3 colors, you can also import an image that contains the environment. High dynamic range images (HDRI) are sphereically-mapped, floating-point images of an environment, and they are a common way of supplying this information for use in rendering. They often allow for much more interesting lighting in controlled situations. HDRIs may already include the sun in outdoor scenes, so you can often turn down directional lighting (or use both). In addition to setting up the lighting environment with 3 colors, you can also import an image that contains the environment. High dynamic range images (HDRI) are sphereically-mapped, floating-point images of an environment, and they are a common way of supplying this information for use in rendering. They often allow for much more interesting lighting in controlled situations. HDRIs may already include the sun in outdoor scenes, so you can often turn down directional lighting (or use both).
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 The image below shows the same tree lit with 3-color ambient, HDRI ambient, and HDRI ambient with the image also used for the background. The image below shows the same tree lit with 3-color ambient, HDRI ambient, and HDRI ambient with the image also used for the background.
  
-{{ :hdri.jpg?nolink |}}+{{hdri.jpg?nolink 1000}}
  
  
-===Ambient Occlusion=== +=====Ambient occlusion=====
-{{ ::ao.png&?300|}}+
 Ambient light comes from all directions at once. But similar to how directional light can cast shadows, parts of the tree should be shadowed from ambient light. This technique is referred to as ambient occlusion (AO).  Ambient light comes from all directions at once. But similar to how directional light can cast shadows, parts of the tree should be shadowed from ambient light. This technique is referred to as ambient occlusion (AO). 
 +
 +{{ao.png&?300}}
  
 AO darkens crevices and the interior of a tree, giving it much more realistic lighting. You can also use an [[kcmaterialspbr|ambient occlusion map]] to further refine AO on a per-material basis. AO darkens crevices and the interior of a tree, giving it much more realistic lighting. You can also use an [[kcmaterialspbr|ambient occlusion map]] to further refine AO on a per-material basis.
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 **Note**: Switch to the "AO" render mode to visualize the computed AO on the tree for easy editing. **Note**: Switch to the "AO" render mode to visualize the computed AO on the tree for easy editing.
 +
 +=====Additional resources=====
 +  * [[directional-lighting|Directional lighting]]
 +  * [[lighting-leaves-and-fronds|Lighting leaves and fronds]]