AMD Developer Central8.67 тыс
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Опубликовано 24 января 2025, 14:44
This video shows a PREVIEW of a pre-release version of our GI-1.0 solution including a sneak peek of glossy reflections.
Real-time global illumination is key to enabling dynamic and believable game worlds. GPU-accelerated ray tracing makes this possible; however, framerate and resolution requirements limit the number of traceable rays per pixel, imposing practical limits on current hardware generations. Existing solutions, such as probe-based techniques, approximate the irradiance signal using fewer rays per frame but suffer from reduced details and slow response times to lighting changes. On the other hand, reservoir-based resampling techniques capture higher detail but typically suffer from poorer performance and increased noise.
Our presentation at the Advanced Graphics Summit during GDC 2023 introduced the practical implementation of a solution aimed at making the most of every sample by caching the estimated radiance into a cache hierarchy used for both sampling and filtering. We showed how this approach allows for highly performant, high-quality, dynamic, and leak-free global illumination without requiring any content pre-processing, thus enabling easy integration into existing real-time rendering pipelines.
Read the paper: gpuopen.com/download/publicati...
Learn about AMD at GDC 2023: gpuopen.com/events/gdc-2023
***
Visit our website: gpuopen.com
Follow us on Twitter: twitter.com/GPUOpen
***
Find the resources you need to develop using AMD products: amd.com/en/developer.html
***
© 2025 Advanced Micro Devices, Inc. All rights reserved. AMD, the AMD Arrow logo, EPYC, ROCm, and AMD Instinct and combinations thereof are trademarks of Advanced Micro Devices, Inc.
Real-time global illumination is key to enabling dynamic and believable game worlds. GPU-accelerated ray tracing makes this possible; however, framerate and resolution requirements limit the number of traceable rays per pixel, imposing practical limits on current hardware generations. Existing solutions, such as probe-based techniques, approximate the irradiance signal using fewer rays per frame but suffer from reduced details and slow response times to lighting changes. On the other hand, reservoir-based resampling techniques capture higher detail but typically suffer from poorer performance and increased noise.
Our presentation at the Advanced Graphics Summit during GDC 2023 introduced the practical implementation of a solution aimed at making the most of every sample by caching the estimated radiance into a cache hierarchy used for both sampling and filtering. We showed how this approach allows for highly performant, high-quality, dynamic, and leak-free global illumination without requiring any content pre-processing, thus enabling easy integration into existing real-time rendering pipelines.
Read the paper: gpuopen.com/download/publicati...
Learn about AMD at GDC 2023: gpuopen.com/events/gdc-2023
***
Visit our website: gpuopen.com
Follow us on Twitter: twitter.com/GPUOpen
***
Find the resources you need to develop using AMD products: amd.com/en/developer.html
***
© 2025 Advanced Micro Devices, Inc. All rights reserved. AMD, the AMD Arrow logo, EPYC, ROCm, and AMD Instinct and combinations thereof are trademarks of Advanced Micro Devices, Inc.