C Specification
Optical flow vectors are generated block-wise, one vector for each block of NxN pixels (referred to as grid).
Bits which can be set in
VkOpticalFlowSessionCreateInfoNV::outputGridSize and
VkOpticalFlowSessionCreateInfoNV::hintGridSize, or which are
returned in
VkPhysicalDeviceOpticalFlowPropertiesNV::supportedOutputGridSizes
and
VkPhysicalDeviceOpticalFlowPropertiesNV::supportedHintGridSizes
controlling optical flow grid sizes, are:
// Provided by VK_NV_optical_flow
typedef enum VkOpticalFlowGridSizeFlagBitsNV {
VK_OPTICAL_FLOW_GRID_SIZE_UNKNOWN_NV = 0,
VK_OPTICAL_FLOW_GRID_SIZE_1X1_BIT_NV = 0x00000001,
VK_OPTICAL_FLOW_GRID_SIZE_2X2_BIT_NV = 0x00000002,
VK_OPTICAL_FLOW_GRID_SIZE_4X4_BIT_NV = 0x00000004,
VK_OPTICAL_FLOW_GRID_SIZE_8X8_BIT_NV = 0x00000008,
} VkOpticalFlowGridSizeFlagBitsNV;Description
-
VK_OPTICAL_FLOW_GRID_SIZE_1X1_BIT_NV specifies that grid is 1x1 pixel.
-
VK_OPTICAL_FLOW_GRID_SIZE_2X2_BIT_NV specifies that grid is 2x2 pixel.
-
VK_OPTICAL_FLOW_GRID_SIZE_4X4_BIT_NV specifies that grid is 4x4 pixel.
-
VK_OPTICAL_FLOW_GRID_SIZE_8X8_BIT_NV specifies that grid is 8x8 pixel.
Document Notes
For more information, see the Vulkan Specification.
This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.