![]() ![]() But instead of carrying color data, each channel carries some other kind of information. In some cases, we also have an alpha channel, providing transparency.Ī render pass can be thought of as a channel, just like in a regular image. ![]() In a regular image we have different channels. To explain what render passes are, I want to compare them with a regular image. That is a lot of information that we can use in post-processing to bring the best from our renders. In Cycles there are over thirty different render passes available, depending on how you count. Like how images contain a red, green, and blue channel, we can divide up a 3D render into different channels such as direct or indirect diffuse light, ambient occlusion or by material to name a few examples. Render passes are different channels that each can hold a separate kind of data that is produced for our image as we render. For any larger project they can save a huge amount of time and we have access to a lot of them in Blender with Cycles. ![]() Render passes are a remarkably interesting thing that we can use in many ways. ![]()
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