• 03/25/2021
  • Public Content
Contents

General Guidance

The following application guidelines ensure the efficient use of bandwidth with render targets:
  • Use as few render targets as necessary and combine render targets when possible to make better use of lower level caches.
  • Avoid defining unnecessary channels or higher precision data formats when not needed to conserve memory bandwidth and optimize cache fetches.
  • Create multiple resources from the same memory object.
  • When possible, create resources in the state that they will first be used. For example, starting in COMMON state then transitioning to DEPTH_WRITE will cause a Hi-Z resolve. Starting in DEPTH_WRITE this example is optimal.
  • Vulkan specific for optimal device access:
    • Always use VK_IMAGE_LAYOUT_{}_OPTIMAL for GPU access.
    • Only use VK_IMAGE_LAYOUT_GENERAL when really needed.
    • Only use VK_IMAGE_CREATE_MULTIPLE_FORMAT_BIT when really needed.

Product and Performance Information

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Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.