mirror of https://github.com/doitsujin/dxvk
43 lines
1.4 KiB
C++
43 lines
1.4 KiB
C++
#pragma once
|
|
|
|
#include <d3d9types.h>
|
|
|
|
namespace dxvk {
|
|
|
|
inline void DecodeD3DCOLOR(D3DCOLOR color, float* rgba) {
|
|
// Encoded in D3DCOLOR as argb
|
|
rgba[3] = (float)((color & 0xff000000) >> 24) / 255.0f;
|
|
rgba[0] = (float)((color & 0x00ff0000) >> 16) / 255.0f;
|
|
rgba[1] = (float)((color & 0x0000ff00) >> 8) / 255.0f;
|
|
rgba[2] = (float)((color & 0x000000ff)) / 255.0f;
|
|
}
|
|
|
|
/**
|
|
* \brief Computes refresh period for a given display refresh rate
|
|
*
|
|
* \param [in] numerator Numerator of refresh rate
|
|
* \param [in] denominator Denominator of refresh rate
|
|
* \returns Refresh period, in nanoseconds
|
|
*/
|
|
inline auto computeRefreshPeriod(uint64_t numerator, uint64_t denominator) {
|
|
using unit = std::chrono::nanoseconds;
|
|
unit::rep ns = unit::rep(unit::period::den * denominator)
|
|
/ unit::rep(unit::period::num * numerator);
|
|
return unit(ns);
|
|
}
|
|
|
|
/**
|
|
* \brief Computes refresh count within a given time period
|
|
*
|
|
* \param [in] t0 Start time
|
|
* \param [in] t1 End time
|
|
* \param [in] refreshPeriod Refresh period
|
|
* \returns Number of refreshes between t1 and t0
|
|
*/
|
|
template<typename TimePoint, typename Duration>
|
|
uint64_t computeRefreshCount(TimePoint t0, TimePoint t1, Duration refreshPeriod) {
|
|
auto duration = std::chrono::duration_cast<Duration>(t1 - t0);
|
|
return duration.count() / refreshPeriod.count();
|
|
}
|
|
|
|
} |