Author: The Blender Notes Team

Achieving Realism: Scattering, Global Illumination And Cycles

What is Cycles Rendering Cycles is Blender’s unbiased physically-based path tracing engine that simulates light transport for high levels of photorealism and quality. As a ray tracing renderer, Cycles traces virtual light rays from the camera through pixels in the rendered image plane until the rays encounter objects. The rendering equation then calculates lighting through…

Reducing Noise In Cycles: Sampling And Integrator Settings

What is Noise in Cycles Renders? Noise in Cycles renders manifests as graininess and random speckles in the final rendered image. It stems from the stochastic ray tracing process, where rays are cast randomly to simulate light behavior. As fewer rays are traced per pixel, variance in the light information leads to visible noise artifacts….

Caustics Rendering: Cycles Vs. Blender Internal Capabilities And Limitations

Caustics in 3D rendering refer to the patterns of light focused and reflected or refracted by curved surfaces. In the real world, caustics can be seen as shimmering patterns often at the bottom of a swimming pool from the sunlight shining down and reflecting off the water. In 3D software, accurate caustics simulation plays an…

Path Tracing Vs. Rasterization: Understanding Cycles And Blender Internal Engines

What is Path Tracing and Why Use Cycles? Path tracing is a ray tracing based rendering technique that simulates light transport in a scene. It works by tracing the path of light rays from the camera into the scene, bouncing around between objects and light sources. This allows for highly realistic rendering with effects like…

Types Of Non-Manifold Geometry And Their Impact On Blender Workflows

What is Non-Manifold Geometry? Non-manifold geometry refers to meshes in Blender that violate the topological rules for manifold shapes. A manifold mesh has clearly defined inside and outside surfaces with consistent face normals. Non-manifold areas occur where these rules break down, such as on borders between multiple surfaces or with overlapping elements. Common examples of…

Identifying And Repairing Overlapping Edges Causing Non-Manifolds In Blender

Identifying Non-Manifold Geometry in Blender Models Non-manifold geometry refers to areas of a 3D model where the mesh has irregularities that make it incompatible for 3D printing or other applications. These irregularities include edges that are connected to more or less than two faces, vertices connected to faces with inconsistent normal directions, and overlapping geometry….

Understanding Non-Manifold Geometry In Blender

What is Non-Manifold Geometry? Non-manifold geometry in Blender refers to meshes that violate the topological rules for manifold meshes. A manifold mesh has well-defined volume inside the surface and no anomalies in the connectivity of edges and faces. Non-manifold geometry lacks this clean topology and includes issues like duplicated vertices, unconnected elements, and self-intersecting surfaces….

When Non-Manifold Geometry Is Acceptable In Blender

Non-manifold geometry in Blender refers to meshes that violate the mathematical definition of a 2-manifold surface. Such meshes contain irregularities like open edges, duplicated elements, and self-intersections that can cause issues when modelling, sculpting, rendering, and more. Defining and identifying non-manifold geometry is the first step towards working with or fixing these meshes in Blender….

Fixing Non-Manifold Geometry In Blender Models

Understanding Non-Manifold Geometry Non-manifold geometry refers to parts of a 3D model that violate the mathematical definition of a manifold. A manifold is a topological space where every point has a neighborhood that resembles Euclidean space. In simpler terms, a proper manifold has well-defined inside and outside surfaces. Non-manifolds, on the other hand, contain irregularities…

Strategies For Retaining Sculpt Detail While Rigging In Blender

What Causes Loss of Detail Understanding Subdivision Surfaces Subdivision surface modeling is a technique for creating smooth, detailed meshes by subdividing a base mesh into smaller polygons. In Blender, the Subdivision Surface modifier achieves this by splitting each polygonal face into smaller faces, allowing more vertices and edges to be added. This increases mesh density…