VulkanHub
Enum

VkRayTracingShaderGroupTypeKHR

Shader group types

The VkRayTracingShaderGroupTypeKHR enumeration is defined as:

typedef enum VkRayTracingShaderGroupTypeKHR {
    VK_RAY_TRACING_SHADER_GROUP_TYPE_GENERAL_KHR = 0,
    VK_RAY_TRACING_SHADER_GROUP_TYPE_TRIANGLES_HIT_GROUP_KHR = 1,
    VK_RAY_TRACING_SHADER_GROUP_TYPE_PROCEDURAL_HIT_GROUP_KHR = 2,
} VkRayTracingShaderGroupTypeKHR;

or the equivalent

#define VkRayTracingShaderGroupTypeNV VkRayTracingShaderGroupTypeKHR
  • VK_RAY_TRACING_SHADER_GROUP_TYPE_GENERAL_KHR specifies that a shader group with a single VK_SHADER_STAGE_RAYGEN_BIT_KHR, VK_SHADER_STAGE_MISS_BIT_KHR, or VK_SHADER_STAGE_CALLABLE_BIT_KHR shader in it.
  • VK_RAY_TRACING_SHADER_GROUP_TYPE_TRIANGLES_HIT_GROUP_KHR specifies that a shader group that only hits triangles and must not contain an intersection shader, only closest hit and any-hit shaders.
  • VK_RAY_TRACING_SHADER_GROUP_TYPE_PROCEDURAL_HIT_GROUP_KHR specifies that a shader group that only intersects with custom geometry and must contain an intersection shader and may contain closest hit and any-hit shaders.

For current group types, the hit group type could be inferred from the presence or absence of the intersection shader, but we provide the type explicitly for future hit groups that do not have that property.