Contact
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Martin Dinkov [GitHub]mdinkov 
Other Extension Metadata
- Last Modified Date
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2019-06-25 
- IP Status
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No known IP claims. 
- Contributors
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Martin Dinkov, AMD 
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Matthaeus G. Chajdas, AMD 
 
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Description
This extension exposes shader core properties for a target physical device
through the VK_KHR_get_physical_device_properties2 extension.
Please refer to the example below for proper usage.
New Enum Constants
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VK_AMD_SHADER_CORE_PROPERTIES_EXTENSION_NAME
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VK_AMD_SHADER_CORE_PROPERTIES_SPEC_VERSION
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Extending VkStructureType: - 
VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_CORE_PROPERTIES_AMD
 
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Examples
This example retrieves the shader core properties for a physical device.
extern VkInstance       instance;
PFN_vkGetPhysicalDeviceProperties2 pfnVkGetPhysicalDeviceProperties2 =
    reinterpret_cast<PFN_vkGetPhysicalDeviceProperties2>
    (vkGetInstanceProcAddr(instance, "vkGetPhysicalDeviceProperties2") );
VkPhysicalDeviceProperties2             general_props;
VkPhysicalDeviceShaderCorePropertiesAMD shader_core_properties;
shader_core_properties.pNext = nullptr;
shader_core_properties.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_CORE_PROPERTIES_AMD;
general_props.pNext = &shader_core_properties;
general_props.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROPERTIES_2;
// After this call, shader_core_properties has been populated
pfnVkGetPhysicalDeviceProperties2(device, &general_props);
printf("Number of shader engines: %d\n",
    m_shader_core_properties.shader_engine_count =
    shader_core_properties.shaderEngineCount;
printf("Number of shader arrays: %d\n",
    m_shader_core_properties.shader_arrays_per_engine_count =
    shader_core_properties.shaderArraysPerEngineCount;
printf("Number of CUs per shader array: %d\n",
    m_shader_core_properties.compute_units_per_shader_array =
    shader_core_properties.computeUnitsPerShaderArray;
printf("Number of SIMDs per compute unit: %d\n",
    m_shader_core_properties.simd_per_compute_unit =
    shader_core_properties.simdPerComputeUnit;
printf("Number of wavefront slots in each SIMD: %d\n",
    m_shader_core_properties.wavefronts_per_simd =
    shader_core_properties.wavefrontsPerSimd;
printf("Number of threads per wavefront: %d\n",
    m_shader_core_properties.wavefront_size =
    shader_core_properties.wavefrontSize;
printf("Number of physical SGPRs per SIMD: %d\n",
    m_shader_core_properties.sgprs_per_simd =
    shader_core_properties.sgprsPerSimd;
printf("Minimum number of SGPRs that can be allocated by a wave: %d\n",
    m_shader_core_properties.min_sgpr_allocation =
    shader_core_properties.minSgprAllocation;
printf("Number of available SGPRs: %d\n",
    m_shader_core_properties.max_sgpr_allocation =
    shader_core_properties.maxSgprAllocation;
printf("SGPRs are allocated in groups of this size: %d\n",
    m_shader_core_properties.sgpr_allocation_granularity =
    shader_core_properties.sgprAllocationGranularity;
printf("Number of physical VGPRs per SIMD: %d\n",
    m_shader_core_properties.vgprs_per_simd =
    shader_core_properties.vgprsPerSimd;
printf("Minimum number of VGPRs that can be allocated by a wave: %d\n",
    m_shader_core_properties.min_vgpr_allocation =
    shader_core_properties.minVgprAllocation;
printf("Number of available VGPRs: %d\n",
    m_shader_core_properties.max_vgpr_allocation =
    shader_core_properties.maxVgprAllocation;
printf("VGPRs are allocated in groups of this size: %d\n",
    m_shader_core_properties.vgpr_allocation_granularity =
    shader_core_properties.vgprAllocationGranularity;Version History
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Revision 2, 2019-06-25 (Matthaeus G. Chajdas) - 
Clarified the meaning of a few fields. 
 
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Revision 1, 2018-02-15 (Martin Dinkov) - 
Initial draft. 
 
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Document Notes
For more information, see the Vulkan Specification
This page is a generated document. Fixes and changes should be made to the generator scripts, not directly.