C Specification
The VkPhysicalDeviceShaderCorePropertiesAMD structure is defined as:
// Provided by VK_AMD_shader_core_properties
typedef struct VkPhysicalDeviceShaderCorePropertiesAMD {
VkStructureType sType;
void* pNext;
uint32_t shaderEngineCount;
uint32_t shaderArraysPerEngineCount;
uint32_t computeUnitsPerShaderArray;
uint32_t simdPerComputeUnit;
uint32_t wavefrontsPerSimd;
uint32_t wavefrontSize;
uint32_t sgprsPerSimd;
uint32_t minSgprAllocation;
uint32_t maxSgprAllocation;
uint32_t sgprAllocationGranularity;
uint32_t vgprsPerSimd;
uint32_t minVgprAllocation;
uint32_t maxVgprAllocation;
uint32_t vgprAllocationGranularity;
} VkPhysicalDeviceShaderCorePropertiesAMD;
Members
-
sTypeis a VkStructureType value identifying this structure. -
pNextisNULLor a pointer to a structure extending this structure. -
shaderEngineCountis an unsigned integer value indicating the number of shader engines found inside the shader core of the physical device. -
shaderArraysPerEngineCountis an unsigned integer value indicating the number of shader arrays inside a shader engine. Each shader array has its own scan converter, set of compute units, and a render back end (color and depth attachments). Shader arrays within a shader engine share shader processor input (wave launcher) and shader export (export buffer) units. Currently, a shader engine can have one or two shader arrays. -
computeUnitsPerShaderArrayis an unsigned integer value indicating the physical number of compute units within a shader array. The active number of compute units in a shader array may be lower. A compute unit houses a set of SIMDs along with a sequencer module and a local data store. -
simdPerComputeUnitis an unsigned integer value indicating the number of SIMDs inside a compute unit. Each SIMD processes a single instruction at a time. -
wavefrontSizeis an unsigned integer value indicating the maximum size of a subgroup. -
sgprsPerSimdis an unsigned integer value indicating the number of physical Scalar General-Purpose Registers (SGPRs) per SIMD. -
minSgprAllocationis an unsigned integer value indicating the minimum number of SGPRs allocated for a wave. -
maxSgprAllocationis an unsigned integer value indicating the maximum number of SGPRs allocated for a wave. -
sgprAllocationGranularityis an unsigned integer value indicating the granularity of SGPR allocation for a wave. -
vgprsPerSimdis an unsigned integer value indicating the number of physical Vector General-Purpose Registers (VGPRs) per SIMD. -
minVgprAllocationis an unsigned integer value indicating the minimum number of VGPRs allocated for a wave. -
maxVgprAllocationis an unsigned integer value indicating the maximum number of VGPRs allocated for a wave. -
vgprAllocationGranularityis an unsigned integer value indicating the granularity of VGPR allocation for a wave.
Description
If the VkPhysicalDeviceShaderCorePropertiesAMD structure is included in the pNext chain of the
VkPhysicalDeviceProperties2 structure passed to
vkGetPhysicalDeviceProperties2, it is filled in with each
corresponding implementation-dependent property.
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.