Added clock time

tests/RuntimeClockTests.cpp

@@ -0,0 +1,50 @@
+#include "RuntimeClock.h"
+
+#include <cmath>
+#include <iostream>
+
+namespace
+{
+int gFailures = 0;
+
+void Expect(bool condition, const char* message)
+{
+	if (condition)
+		return;
+
+	std::cerr << "FAIL: " << message << "\n";
+	++gFailures;
+}
+
+void TestUtcSecondsOfDay()
+{
+	const RuntimeClockSnapshot midnight = MakeRuntimeClockSnapshot(0);
+	Expect(midnight.utcTimeSeconds == 0.0, "Unix epoch starts at UTC midnight");
+
+	const RuntimeClockSnapshot midday = MakeRuntimeClockSnapshot(12 * 3600 + 34 * 60 + 56);
+	Expect(midday.utcTimeSeconds == 45296.0, "UTC time of day is seconds since midnight");
+}
+
+void TestOffsetLooksLikeTimezoneOffset()
+{
+	const RuntimeClockSnapshot snapshot = MakeRuntimeClockSnapshot(12 * 3600);
+	Expect(std::fmod(snapshot.utcOffsetSeconds, 60.0) == 0.0, "UTC offset is minute-aligned");
+	Expect(snapshot.utcOffsetSeconds >= -14.0 * 3600.0 && snapshot.utcOffsetSeconds <= 14.0 * 3600.0,
+		"UTC offset is in the normal timezone range");
+}
+}
+
+int main()
+{
+	TestUtcSecondsOfDay();
+	TestOffsetLooksLikeTimezoneOffset();
+
+	if (gFailures != 0)
+	{
+		std::cerr << gFailures << " RuntimeClock test failure(s).\n";
+		return 1;
+	}
+
+	std::cout << "RuntimeClock tests passed.\n";
+	return 0;
+}

tests/Std140BufferTests.cpp

@@ -62,6 +62,8 @@ void TestGlobalParamStylePacking()
 	AppendStd140Float(buffer, 10.0f);				// time
 	AppendStd140Vec2(buffer, 1920.0f, 1080.0f);		// input resolution
 	AppendStd140Vec2(buffer, 1280.0f, 720.0f);		// output resolution
+	AppendStd140Float(buffer, 45296.0f);			// UTC time of day
+	AppendStd140Float(buffer, 36000.0f);			// UTC offset
 	AppendStd140Float(buffer, 42.0f);				// frame count
 	AppendStd140Float(buffer, 0.5f);				// mix
 	AppendStd140Float(buffer, 1.0f);				// bypass
@@ -78,8 +80,10 @@ void TestGlobalParamStylePacking()
 	Expect(ReadFloat(buffer, 0) == 10.0f, "time is at the start of the block");
 	Expect(ReadFloat(buffer, 8) == 1920.0f, "first vec2 aligns after scalar padding");
 	Expect(ReadFloat(buffer, 16) == 1280.0f, "second vec2 follows first vec2");
-	Expect(ReadInt(buffer, 36) == 3, "history length scalar remains tightly packed");
-	Expect(ReadFloat(buffer, 48) == 4.0f, "vec2 shader parameter aligns to 8 bytes");
+	Expect(ReadFloat(buffer, 24) == 45296.0f, "UTC time follows output resolution");
+	Expect(ReadFloat(buffer, 28) == 36000.0f, "UTC offset follows UTC time");
+	Expect(ReadInt(buffer, 44) == 3, "history length scalar remains tightly packed");
+	Expect(ReadFloat(buffer, 56) == 4.0f, "vec2 shader parameter aligns to 8 bytes");
 	Expect(ReadFloat(buffer, 64) == 0.1f, "color parameter aligns to 16 bytes");
 	Expect(ReadInt(buffer, 80) == 1, "boolean parameter follows vec4");
 	Expect(ReadInt(buffer, 84) == 2, "enum parameter follows boolean");