This page provides downloads for all previous versions of OptiX SDK

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Download OptiX SDK 6.0

The much anticipated OptiX 6 SDK release brings a giant leap in performance. This new release lets developers take advantage of the new RT Cores in Turing GPUs. RT Cores accelerate Bounding Volume Hierarchy (BVH) traversal and ray/triangle intersection testing (ray casting) functions. This version also takes advantage of Tensor Cores present on Volta and Turing GPUs to accelerate the OptiX AI Denoiser. To download, you must be a member of NVIDIA Developer - DesignWorks.

By clicking the "Agree & Download" button below, you are confirming that you have read and agree to be bound by the SOFTWARE DEVELOPER KITS, SAMPLES AND TOOLS LICENSE AGREEMENT for use of the SDK package. The download will begin immediately after clicking on the "Agree & Download" button below.

Windows 7 and higher, 64-bit
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Linux
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Release Notes (PDF)

Note: For the OSX versions please use 5.1.2 (Power9) or 5.0.1(Mac OSX) available lower on this page
ChangeLog

Please see release notes for details

  • OptiX 6.0.0 fully implements RTX acceleration including:
    • Support for RT Cores on Turing RTX GPUs.
    • Separate compilation of shaders for faster startup times and updates.
    • RTX acceleration is supported on Maxwell and newer GPUs but require Turing GPUs for RT Core acceleration.
  • Multi-GPU support for scaling performance across GPUs, Mixing GPUs with RT Cores and without RT Cores is not supported.
  • Support for scaling texture memory across NVLink connected GPUs.
  • Triangle API with motion blur and attribute programs.
  • rtTrace from bindless callable programs.
  • Turing-specific optimizations for the OptiX AI denoiser.
  • Set the stack size by providing the Trace depth.
  • Take advantage of hardware-accelerated 8-bit mask.
  • General stability improvements.

Important Notes:

  • We recommend you use the optixGeometryTriangles examples to get started with the Triangle API
  • Minimum driver required is R418

Download OptiX SDK 5.1.2 for Power9 (v.5.1.2)

By clicking the "Agree & Download" button below, you are confirming that you have read and agree to be bound by the SOFTWARE DEVELOPER KITS, SAMPLES AND TOOLS LICENSE AGREEMENT for use of the SDK package. The download will begin immediately after clicking on the "Agree & Download" button below.

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Download OptiX SDK 5.1.1

OptiX 5 SDK release is an important milestone in the evolution of OptiX, featuring built-in support for motion blur, and a deep-learning based denoiser. Version 5.0 maintains compatibility with your existing applications and provides the same easy to use API for which OptiX is known. To download, you must be a member of NVIDIA Developer - DesignWorks.

By clicking the "Agree & Download" button below, you are confirming that you have read and agree to be bound by the SOFTWARE DEVELOPER KITS, SAMPLES AND TOOLS LICENSE AGREEMENT for use of the SDK package. The download will begin immediately after clicking on the "Agree & Download" button below.

Windows 7 and higher, 64-bit
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Linux
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Release Notes (PDF)

Note: For the OSX versions please use 5.0.1 available in the OptiX Legacy Downloads
ChangeLog

Please see release notes for details

  • Fixed visible artifacts due to a bug in the tiling code
  • Fixed error when resizing denoiser window (-4711 error)
  • Fixed few issues that caused denoiser to use too much memory

Please note that the OptiX 5.1.1 SDK does not support Turing.


Download OptiX SDK 5.1

By clicking the "Agree & Download" button below, you are confirming that you have read and agree to be bound by the SOFTWARE DEVELOPER KITS, SAMPLES AND TOOLS LICENSE AGREEMENT for use of the SDK package. The download will begin immediately after clicking on the "Agree & Download" button below.

Windows 7 and higher, 64-bit
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Linux
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Release Notes (615KB, PDF)

ChangeLog
  • Build time improvements for scenes with many instances
  • Shader compile time improvements
  • Added disk caching for compiled shaders to improve start up time
  • Added HDR support for the OptiX AI-Accelerated Denoiser
  • Improved profiling and debugging by propagating source code line numbers to final binaries
  • New MDL sample demonstrating custom BSDFs

Download OptiX SDK 5.0.1

By clicking the "Agree & Download" button below, you are confirming that you have read and agree to be bound by the SOFTWARE DEVELOPER KITS, SAMPLES AND TOOLS LICENSE AGREEMENT for use of the SDK package. The download will begin immediately after clicking on the "Agree & Download" button below.

Windows 7 and higher, 64-bit
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Linux
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Mac OSX 10.9 or higher
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Release Notes (615KB, PDF)

ChangeLog
  • Fixes and enhancements to the AI denoiser integration
  • Fixed crash when using peer to peer access in WDDM mode
  • OptiX sample application improvements

Download OptiX SDK 5.0

By clicking the "Agree & Download" button below, you are confirming that you have read and agree to be bound by the SOFTWARE DEVELOPER KITS, SAMPLES AND TOOLS LICENSE AGREEMENT for use of the SDK package. The download will begin immediately after clicking on the "Agree & Download" button below.

Windows 7 and higher, 64-bit
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Linux
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Mac OSX 10.9 or higher
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Release Notes (615KB, PDF)

ChangeLog
  • New AI-Accelerated Denoiser
  • Support for Volta class GPUs has been added.
  • Support for motion blur by enabling motion data for Transform and Geometry nodes
  • Improved startup time and general performance improvements
  • Two new samples demonstrate how the NVIDIA Material Definition Language (MDL) can be used with OptiX

Download OptiX SDK 4.1.1

OptiX 4 is also now free to use within any application, including commercial and educational applications. To download, you must be a member of NVIDIA Developer - DesignWorks.

By clicking the "Agree & Download" button below, you are confirming that you have read and agree to be bound by the SOFTWARE DEVELOPER KITS, SAMPLES AND TOOLS LICENSE AGREEMENT for use of the SDK package. The download will begin immediately after clicking on the "Agree & Download" button below.

Windows 7 and higher, 64-bit
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Linux
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Mac OSX 10.9 or higher
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Release Notes (615KB, PDF)

ChangeLog
  • Reduced host memory usage for scenes with large numbers of geometry instances.
  • Fixed a bug where the primitive index offset was ignored if a GeometryGroup only contained a single GeometryInstance.
  • Fixed a bug in Optix Prime where the least significant bit of the floating point hit distance could be non deterministic for some triangles in a scene, depending on their location in the Bvh.
  • Changed all Optix Prime SDK samples to use CUDA context by default.
  • Fix for scene creation time when sharing Material across many GeometryInstances.
  • Fixed a memory leak on GL interop buffer destroy
  • Fixed an issue where the CUDA compute cache would sometimes not kick in, causing longer compile times.
  • Updated installer framework to avoid security problem at installation time of the SDK.

Download OptiX SDK 4.1.0

OptiX 4 is also now free to use within any application, including commercial and educational applications. To download, you must be a member of NVIDIA Developer - DesignWorks.

By clicking the "Agree & Download" button below, you are confirming that you have read and agree to be bound by the SOFTWARE DEVELOPER KITS, SAMPLES AND TOOLS LICENSE AGREEMENT for use of the SDK package. The download will begin immediately after clicking on the "Agree & Download" button below.

Windows 7 and higher, 64-bit
Agree & Download
Linux
Accept & Download
Mac OSX 10.9 or higher
Accept & Download

Release Notes (615KB, PDF)

ChangeLog
  • Support for CUDA 8.0
  • Support for Visual Studio 2015 when building the SDK
  • Various bug fixes, including more robust handling of complex node graph changes
  • Better kernel performance in some cases
  • The OptiX headers are now compatible with NVRTC, the runtime compilation library shipping with CUDA (read more)

Download OptiX SDK 4.0.3

OptiX 4 is also now free to use within any application, including commercial and educational applications.

By clicking the "Agree & Download" button below, you are confirming that you have read and agree to be bound by the SOFTWARE DEVELOPER KITS, SAMPLES AND TOOLS LICENSE AGREEMENT for use of the SDK package. The download will begin immediately after clicking on the "Agree & Download" button below.

Windows 7 and higher, 64bit
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Linux
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Mac OSX 10.9 or higher
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Release Notes (615KB, PDF)

Changelog

  • Changed all Optix Prime SDK samples to use CUDA context by default.
  • Fixed a memory leak on GL interop buffer destroy
  • Updated installer framework to avoid security problem at installation time of the SDK.

Download OptiX SDK 4.0.2

OptiX 4 is also now free to use within any application, including commercial and educational applications.

By clicking the "Agree & Download" button below, you are confirming that you have read and agree to be bound by the SOFTWARE DEVELOPER KITS, SAMPLES AND TOOLS LICENSE AGREEMENT for use of the SDK package. The download will begin immediately after clicking on the "Agree & Download" button below.

Windows 7 and higher, 64bit
Agree & Download
Linux
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Mac OSX 10.9 or higher
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Release Notes (615KB, PDF)

Changelog

  • New EULA, now permitting unfettered use of OptiX in commercial applications
  • [OptiX and Prime] Fixed several issues that could lead to failures when using TRBVH with large scenes
  • Fixed an issue that could lead to unnecessary BVH rebuilds when calling rtContextSetEntryPointCount or rtContextSetRayTypeCount without changing the value
  • Fixed an issue that could lead to compilation errors when using atomics of different types in a single program
  • Reduced the memory requirements for TRBVH
  • Improved robustness when using multiple OptiX contexts
  • [Prime] Fixed an issue where in some out-of-memory situations RT_ERROR_UNKNOWN would be returned instead of RTP_ERROR_MEMORY_ALLOCATION_FAILED

Download OptiX SDK 4.0.1

OptiX 4 is also now free to use within any application, including commercial and educational applications.

By clicking the "Agree & Download" button below, you are confirming that you have read and agree to be bound by the SOFTWARE DEVELOPER KITS, SAMPLES AND TOOLS LICENSE AGREEMENT for use of the SDK package. The download will begin immediately after clicking on the "Agree & Download" button below.

Windows 7 and higher, 64bit
Agree & Download
Linux
Agree & Download
Mac OSX 10.9 or higher
Agree & Download

Release Notes (453KB, PDF)

Changelog

  • New EULA, now permitting unfettered use of OptiX in commercial applications
  • Fixed an “invalid device function” error when running on Pascal GPUs in some cases
  • Fixed an issue where certain modifications to the node graph could trigger an assertion
  • Fixed an issue with the CPU fallback of TRBVH
  • Fixed an issue that could lead to corrupt output when using 3D launches
  • Fixed a performance issue when using instancing in OptiX Prime on Windows
  • Improved compile times when OptiX exceptions are enabled
  • Improved various error messages
  • Added handling of half formats to rtuGetSizeForRTformat
  • Fixed the default buffer size in primeMultiBuffering sample

Download OptiX SDK 4.0.0

By clicking the "Agree & Download" button below, you are confirming that you have read and agree to be bound by the SOFTWARE DEVELOPER KITS, SAMPLES AND TOOLS LICENSE AGREEMENT for use of the SDK package. The download will begin immediately after clicking on the "Agree & Download" button below.

Windows 7 and higher, 64bit
Agree & Download
Linux
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Mac OSX 10.9 or higher
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Release Notes (504KB, PDF)

Changelog

  • Support for Pascal class GPUs
  • Memory scaling across NVLINK. With multiple NVLINK-capable GPUs in the system, OptiX 4.0 is able to automatically and transparently combine their memory, so applications can fit larger scenes.
  • Compiled kernels are now cached in memory, which helps avoid repeated recompiles.
  • Heterogeneous multi-GPU support. OptiX 4.0 can take advantage of multiple GPUs in a system even if they are not of the same architecture.
  • Improved error checking and validation.
  • rtBufferMapEx now implements all map modes, including RT_BUFFER_MAP_WRITE_DISCARD which helps avoid unnecessary device-to-host copies.
  • Streamlined the SDK samples by reducing their number, reducing code complexity, and increasing focus.
  • Improved performance with large node graphs.
  • Improved compile times.
  • Reduced host overhead for dynamic scenes.
  • Significant performance improvements for local progressive rendering.
  • CUDA interop improvements, including the ability to interop with both the Runtime and the Driver API.
  • Improved kernel runtime and compile time performance over 3.9 in many cases. Reduced host overhead compared to 3.9 in most scenarios.
  • Support for Fermi class GPUs has been removed.
  • The following functions have been deprecated: rtAccelerationGetDataSize, rtAccelerationGetData, rtAccelerationSetData, rtAccelerationGetTraverser, rtAccelerationSetTraverser, rtBufferCreateForCUDA, rtContextCompile, rtGeometryIsDirty, rtGeometryMarkDirty.
  • Some acceleration structure builder mappings and properties have changed. Please refer to the reference documentation for details.
  • Support for automatic paging of data from system memory has been removed..
  • rtContextSetPrintBufferSize must be called before the first launch to take effect..
  • Stricter validation of user programs. Uninitialized variables in OptiX programs are not allowed, except float, int, uint, programID, and user types. Type checking is stricter. Writing to attributes outside of an rtPotentialIntersection/rtReportIntersection pair now causes an error.
  • Cancelling long running operations with rtContextSetTimeoutCallback is currently not implemented.
  • rtVariableGetAnnotation is currently not implemented and will return an empty string.
  • DirectX interop support has been removed.
  • The integer encoding of the OptiX version returned by rtGetVersion now includes an extra digit for minor and bugfix versions.
  • The rtBufferSetDevicePointer and rtBufferGetDevicePointer interfaces have been modified. Please refer to the reference documentation.
  • rtBufferGetGLBOId and rtTextureSamplerGetGLImageId now return RT_SUCCESS instead of RT_INVALID_VALUE (in addition to setting the output ID to zero) when called on a non-GL buffer/sampler.

Download OptiX 3.9.2

Changelog

  • Fixed an issue where certain node graph configurations could lead to internal errors being reported.
  • Fixed too high memory consumption in some cases when using TRBVH which could lead to out of memory errors for modestly large models.
  • Updated installer framework to avoid security problem at installation time of the SDK.

Download OptiX 3.9.1

Changelog

  • Added support for Pascal GPU architectures.
  • Improved performance with large node graphs.
  • Improved compile times.
  • Reduced host overhead for dynamic scenes.
  • Many compiler bug fixes and robustness improvements.
  • Fixed an issue with buffer loads accessing different buffers based on a condition.
  • Fixed rtBufferGetPointer incorrectly interpreting its device number argument.
  • Fixed an issue with switching between non-triangle and triangle geometry for Trbvh accelerations.
  • Fixed an issue with mipped/cubed/layered textures.
  • Fixed an issue where using Trbvh could lead to missing geometry.
  • Fixed an issue where using Trbvh could lead to crashes.
  • Improved robustness to NaNs and Infs in geometry input for Trbvh.
  • Fixed a rare case of VCA server versions not being detected correctly.
  • Fixed trace captures with OpenGL half float textures.
  • Prime: Fixed an issue with handling very large scenes.

Download OptiX 3.9

Changelog

  • CUDA 7.5 Toolkit support.
  • Trbvh builds are now twice as fast in OptiX.
  • Faster ray tracing of massive models in both OptiX and OptiX Prime.
  • Access to new texture types available in CUDA 7.5 including MIP-mapped textures, cube textures, and layered textures via gather and fetch.
  • Support for anisotropic texture filtering.
  • Support for half float textures.
  • Reduced CPU overhead for very large node graphs.
  • Prime now supports a watertight ray-triangle intersection mode for improved robustness.
  • Added new dynamicGeometry sample that illustrates performance alternatives for rigid body motion with large node graphs.
  • OpenGL interop now supports GL_SRGB8 and GL_SRGB8_ALPHA8 modes.
  • Improvements to compile times up to 7x of very large user code when using R358 or later drivers on Maxwell GPUs.

Download OptiX 3.8

Changelog

  • VCA Support
  • Progressive API
  • Stream buffer API
  • CUDA 7.0 support
  • First class Trbvh support as default builder in OptiX samples

Download OptiX 3.7

Changelog

  • Instancing in OptiX Prime
  • Visual Studio 2013 support