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18 lines
698 B
C++
18 lines
698 B
C++
#pragma once
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#include <algorithm>
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#include <cstdint>
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namespace aurora::stereo {
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// The current scene belongs to the VI presentation boundary. Delaying scene
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// motion by one guest interval lets every display sample fall between known
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// endpoints; head tracking is applied afterwards at its predicted display time.
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inline float interpolation_weight(uint64_t displayTime, uint64_t boundary, uint64_t interval) noexcept {
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if (displayTime == 0 || boundary == 0 || interval == 0)
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return 1.0f;
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if (displayTime <= boundary)
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return 0.0f;
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return static_cast<float>(std::min(static_cast<double>(displayTime - boundary) / static_cast<double>(interval), 1.0));
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}
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} // namespace aurora::stereo
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