GFSDK_HBAO+_distro_r3.0_cl20573789

1 files changed, 37 insertions, 0 deletions

diff --git a/build/tools/HLSLcc/May_2014/offline/timer.cpp b/build/tools/HLSLcc/May_2014/offline/timer.cpp
new file mode 100644
index 0000000..ac7858b
--- /dev/null
+++ b/build/tools/HLSLcc/May_2014/offline/timer.cpp
@@ -0,0 +1,37 @@
+#include "timer.h"
+
+void InitTimer(Timer_t* psTimer)
+{
+#if defined(_WIN32)
+    QueryPerformanceFrequency(&psTimer->frequency);
+#endif
+}
+
+void ResetTimer(Timer_t* psTimer)
+{
+#if defined(_WIN32)
+	QueryPerformanceCounter(&psTimer->startCount);
+#else
+	gettimeofday(&psTimer->startCount, 0);
+#endif
+}
+
+/* Returns time in micro seconds */
+double ReadTimer(Timer_t* psTimer)
+{
+	double startTimeInMicroSec, endTimeInMicroSec;
+
+#if defined(_WIN32)
+    const double freq = (1000000.0 / psTimer->frequency.QuadPart);
+	QueryPerformanceCounter(&psTimer->endCount);
+    startTimeInMicroSec = psTimer->startCount.QuadPart * freq;
+    endTimeInMicroSec = psTimer->endCount.QuadPart * freq;
+#else
+	gettimeofday(&psTimer->endCount, 0);
+    startTimeInMicroSec = (psTimer->startCount.tv_sec * 1000000.0) + psTimer->startCount.tv_usec;
+    endTimeInMicroSec = (psTimer->endCount.tv_sec * 1000000.0) + psTimer->endCount.tv_usec;
+#endif
+
+	return endTimeInMicroSec - startTimeInMicroSec;
+}
+