GPU rendering involves using a computer’s Graphics Processing Unit (GPU) to speed up the process of rendering images, animations, or simulations. Due to GPUs being massive parallel processors they are well-suited for tasks like rendering that has tons of calculations all happening at the same time.
Benefits of GPU Rendering
Faster Rendering Times: Since GPUs are designed to perform multiple tasks concurrently they work much faster for specific types of rendering involved in ray tracing, lighting builds and shadow visibility.
Real-Time Rendering: Most of todays render engines, like Eevee are using GPU to provide real time rendering, helping artist to see what she/he is actually changing in the scene without long renders.
Lower Cost: Many high-end GPUs are priced for less than a comparable CPU render farm, making them a cost-effective solution for freelance artists or small studios.
Popular GPU Render Engines
Redshift: Preeminently fast, production-quality renderer; another high performance GPU-based render engine indispensible to any professional VFX workflows.
Cycles (Blender): Blender has a built-in GPU renderer using NVIDIA’s CUDA and OptiX technologies.
When to Use GPU Rendering
Complex scenes — For rendering scenes with many light bounces, shadows and reflections GPU can be 10x to 100x quicker.
In animation, GPU rendering can be used for large-scale projects to reduce the time required to render a frame, making it feasible to generate many more frames in the same amount of time.
As reported by Chaos Group, GPU rendering is now a go-to solution for most rendering scenarios due to fast results and real-time feedback, which every 3D artist or studio will now consider an important asset in his/her workflow.
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