Creating Procedural Environments in Gaea and Houdini with Rasha Shalaby

The procedural nature of Gaea by Quadspinner empowers 3D artists and matte painters to craft impressive and realistic environments with its powerful tools. Incorporating Gaea into a Houdini workflow, Rasha Shalaby — an Environment Artist and Matte Painter with over 20 years of experience in VFX for film, TV, and game cinematics — uncovers how to create terrain assets such as icy cliffs and rocky terrains that are usually harder to achieve through height-field simulations alone.

In this 3.5-hour workshop, Rasha demonstrates how to create geometry using various erosion and warp techniques in Gaea, as well as how to pull data to help create textures and data maps for assets. She shares how to export textures and maps into Houdini for the lookdev and lighting stage, and reveals how to establish the look, lighting setup, and cameras for the environment in Houdini. The renders are set up in Arnold for the ultimate final look.

Rasha offers a quick tour through some of Houdini’s top tools for creating complex, layered surfaces — with a focus on those that help to maintain the rocky look of cliffs. An overview of how to create a 360-degree panorama of the environment is also included, showing how Rasha brings in her renders of the horizon and, with some painting, masking, and adjustments in Photoshop, is able to use the resulting image to later light the scene for the final render.

01. Gaea Overview and Fast Terrain Sketch 02. Speed Terrain Creation in 10 Nodes or Less 03. Initial Hero Mountain Build in Gaea 04. Texturing Initial Mountain and Rock Face in Gaea 05. Environment Setup in Houdini 06. Enhance Terrain Complexity in Gaea 07. Environment Look Dev and Lighting 08. Creating Outer-Edge Environment 09. Lighting and Rendering Horizon Environment in Houdini 10. Combining the Environment with HDRI Pano in Photoshop 11. Final Renders including Environment Fog and Atmosphere

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