Program Listing for File MemoryHelper.hpp

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#pragma once
#include <cstdint>

namespace Kataglyphis {
// aligned piece of memory appropiately and when necessary return bigger piece
constexpr uint32_t align_up(uint32_t memory, uint32_t alignment)
{
    return (memory + alignment - 1) & ~(alignment - 1);
}

// vkGetRayTracingShaderGroupHandlesKHR writes handles tightly packed at
// handleSize, regardless of the device's handle alignment requirement.
constexpr uint32_t sbt_handle_source_offset(uint32_t groupIndex, uint32_t handleSize)
{
    return groupIndex * handleSize;
}

// SBT device records must each start at a shaderGroupHandleAlignment-aligned
// offset, which can be larger than the packed handle size above.
constexpr uint32_t sbt_record_offset(uint32_t recordIndex, uint32_t handleSizeAligned)
{
    return recordIndex * handleSizeAligned;
}
}// namespace Kataglyphis