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How does the diffuse shader work in Blender?
When we trace a light ray into the location marked by the white circle on a red dot, the second image below gives an impression of what the diffuse shader “sees”. To find the light that is reflected from this surface, we need to find the average color from all these pixels.
Is there way to disable glossy reflection in Blender?
There is a No Caustics option to disable glossy behind a diffuse reflection entirely. Many renderers will typically disable caustics by default. However, using No Caustics will result in missing light, and it still does not cover the case where a sharp glossy reflection is viewed through a soft glossy reflection.
What happens when Blender is set too low?
If set too low this can cause missing highlights in the image, which might be useful to preserve for camera effects such as bloom or glare. To mitigate this conundrum it’s often useful to clamp only indirect bounces, leaving highlights directly visible to the camera untouched.
How does the matte / shadow / reflection shader work?
The Matte/Shadow/Reflection shader works by doing a form of differential shading. In other words, it determines the amount of light a point would receive if it were not in shadow, compares it to the amount of light the point actually receives, and shades it by the relative difference.
When to use transparent shader in Blender?
The Transparent BSDF can be used for transparent shadows to find light sources straight through surfaces, and will give properly-colored shadows, but without the caustics. The Light Path node is used to determine when to use which of the two shaders.
Can a glass shader use a transparent BSDF?
We can make a glass shader that will use a Glass BSDF when viewed directly , and a Transparent BSDF when viewed indirectly. The Transparent BSDF can be used for transparent shadows to find light sources straight through surfaces, and will give properly-colored shadows, but without the caustics.