deco image

Cinema 4D Overview

Cinema 4D is the first commercial 3D application with an integrated GPU path-tracing renderer based on the OpenCL open standard

With the integration of Radeon™ ProRender, Cinema 4D is the first commercial 3D application with an integrated GPU path-tracing renderer based on the OpenCL open standard

AMD developed Radeon ProRender as a modern uni-directional pathtracing renderer, which provides unbiased rendering, and features GPU-acceleration. Being based on OpenCL™, it allows users to render on graphics cards produced by different manufacturers. This flexibility was one of the reasons for AMD and MAXON to team up and integrate Radeon ProRender natively into Cinema 4D, which will begin with the launch of Release 19.

For Cinema 4D users who already create materials completely reflectance-based, there will be no difference regarding workflow, so they immediately benefit from the huge speed boosts Radeon ProRender enables in render time. For other users, it is important to understand what the physically-based workflow is, and how to use it.

The central idea of the physically-based workflow is use those lighting set-ups, materials and camera configurations which are based off physics principles. This could involve the use of real-world measurements, for example setting a light to use its real-world temperature value in kelvin. The goal is to simplify rendering by leaving the physics to the renderer, and allow the artist to set a few, sensible settings on material and lights. This enhances artists’ workflows by freeing them from having to tweak parameters to get great renders, and allows quickly producing a render which becomes virtually indistinguishable from a photograph.

USING RADEON™ PRORENDER IN CINEMA 4D

1. Starting Radeon ProRender

1. Starting ProRender

After choosing Radeon ProRender from the render settings of Cinema 4D you can activate the interactive preview directly in the viewport. Use the Min Resolution parameter to undersample the preview in the beginning of the rendering, in order to increase interactivity while editing, keep in mind that you need to increase the ray depth, if your scene contains glass materials.

2. Lighting

2. Lighting

It’s common to light a scene and make clay renderings before adjusting materials. This enables you to see the distribution and mood of light in your scene. Lighting with an HDRI leads to instant photorealistic results. And you can improve the look by using additional sources. Keep in mind that the size of the light source will affect its intensity in a PBR workflow. The bigger, the brighter.

3. Materials

3. Materials

It is important to stick to the physically-based workflow. That is the reason for a new reflectance-based material inside of Cinema 4D Release 19. The color channel is replaced by a 100% rough Lambertion, or Oren-Nayar diffuse reflection, as the base layer. Always use a value of 1-3% as a minimum for roughness in reflectance layers, as there are no perfect reflections in reality.

4. Depth of field

4. Depth of field

Adding depth of field is just one click in the render settings. If the whole image is getting blurry, adjust the Focal Distance parameter in the camera by adding a focus object to the scene. As in the real world, the strength of DOF is controlled by the F-stop setting in the camera, but also by the distance between camera and object, so always work in real world scales!

5. Tone Mapping

5. Tone Mapping

Tone Mapping is an essential effect when it comes to rendering Global Illumination images. Activate it in Cinema 4D’s render settings by choosing ‘Tone Mapping’ from the ‘Effects’ dropdown. Now you can choose from different algorithms and correct colors based on exposure, ISO, F-stop, gamma and many more.

6. Final Touches & Offline Rendering

6. Final Touches & Offline Rendering

For final touches switch the Radeon ProRender viewport quality from preview to offline. This can raise the quality, but may also result in longer render times. Play with the firefly filter threshold to get rid of hot pixels, common to pathtracers. For the final rendering, just click ‘Render to Picture Viewer’. Enable bucket rendering if you want to render high resolution images, that wonít fit into the vRAM.

Case Study

BOMPER STUDIO

The world of modern visual effects is one that moves at a tremendous pace, with studios almost chasing their own tails in the race to develop powerful new tools, while also trying to find the hardware that allows them to be used in production, with as few bottlenecks as possible. Read how Bomper Studio, a studio in south Wales, is leveraging Radeon™ ProRender and Ryzen™ + Radeon™ Pro based workstations to produce award-winning CGI animations and stills for various clients.

To download your copy of the whitepaper, please complete your details.


© 2017 Advanced Micro Devices, Inc. All rights reserved. AMD, the AMD Arrow logo, Radeon, LiquidVR, and combinations thereof are trademarks of Advanced Micro Devices, Inc. DirectX is a registered trademark of Microsoft Corporation in the US and other jurisdictions. OpenCL is a trademark of Apple Inc. used by permission by Khronos. OpenGL is a registered trademark of Silicon Graphics, Inc. used by permission by Khronos. Vulkan and the Vulkan logo are registered trademarks of Khronos Group, Inc. Other product names used in this publication are for identification purposes only and may be trademarks of their respective companies.

HDMI, the HDMI logo and High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing, LLC in the United States and other countries.