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FidelityFX Single Pass Downsampler (SPD) provides an RDNA-optimized solution for generating up to 12 MIP levels per slice of a texture.

Release Notes

• Support for cube textures and array textures: the SpdDownsampler function takes as new parameter the slice index. The total number of slices is passed in with the z component of your dispatch size.
• Support for downsampling a sub-rectangle, in case only a known region of the source texture has been updated.
• CPU side helper function to compute constants:
  • dispatch size x and y
  • thread group offsets in case only a sub-rectangle has modified data
  • number of thread groups
  • number of MIPs
• Automatic reset of the global atomic counter after each SPD run: only one single initialization for the first run of SPD is required now.

Prerequisites

• DirectX® 12 or Vulkan compatible GPU
• Windows® 10
• AMD driver 20.8.3 or later / Nvidia driver 445.87 or later

For building you also need

• Windows® 10 SDK 10.0.17763.0 or later
• CMake 3.4 or later
• Visual Studio 2017 or later

FidelityFX Single Pass Downsampler (SPD) provides an RDNA-optimized solution for generating up to 12 MIP levels of a texture.

Release Notes

Initial release on GitHub

Prerequisites

• DirectX® 12 or Vulkan compatible GPU
• Windows® 10
• AMD driver 20.4.2 or later / Nvidia driver 445.87 or later

For building you also need

• Windows® 10 SDK 10.0.17763.0 or later
• CMake 3.4 or later
• Visual Studio 2017 or later