1 files changed, 73 insertions, 0 deletions

diff --git a/src/Utility.cpp b/src/Utility.cpp
new file mode 100644
index 0000000..9fecc08
--- /dev/null
+++ b/src/Utility.cpp
@@ -0,0 +1,73 @@
+#include <thread>
+#include "Utility.hpp"
+
+GLenum glCheckError_(const char *file, int line) {
+	GLenum errorCode;
+	while ((errorCode = glGetError()) != GL_NO_ERROR) {
+		std::string error;
+		switch (errorCode) {
+			case GL_INVALID_ENUM:
+				error = "INVALID_ENUM";
+				break;
+			case GL_INVALID_VALUE:
+				error = "INVALID_VALUE";
+				break;
+			case GL_INVALID_OPERATION:
+				error = "INVALID_OPERATION";
+				break;
+			case GL_STACK_OVERFLOW:
+				error = "STACK_OVERFLOW";
+				break;
+			case GL_STACK_UNDERFLOW:
+				error = "STACK_UNDERFLOW";
+				break;
+			case GL_OUT_OF_MEMORY:
+				error = "OUT_OF_MEMORY";
+				break;
+			case GL_INVALID_FRAMEBUFFER_OPERATION:
+				error = "INVALID_FRAMEBUFFER_OPERATION";
+				break;
+		}
+		static int t = 0;
+		t++;
+		if (t > 10)
+			LOG(FATAL);
+		LOG(ERROR) << "OpenGL error: " << error << " at " << file << ":" << line;
+	}
+	return errorCode;
+}
+
+LoopExecutionTimeController::LoopExecutionTimeController(duration delayLength) : delayLength(delayLength) {
+	previousUpdate = clock::now();
+}
+
+LoopExecutionTimeController::~LoopExecutionTimeController() {
+
+}
+
+void LoopExecutionTimeController::SetDelayLength(duration length) {
+	delayLength = length;
+}
+
+unsigned long long LoopExecutionTimeController::GetIterations() {
+	return iterations;
+}
+
+void LoopExecutionTimeController::Update() {
+	iterations++;
+	auto timeToSleep = delayLength - GetDelta();
+	if (timeToSleep.count()>0)
+		std::this_thread::sleep_for(timeToSleep);
+	previousUpdate = clock::now();
+}
+
+double LoopExecutionTimeController::GetDeltaMs() {
+	auto now = clock::now();
+	return duration(now-previousUpdate).count();
+}
+
+LoopExecutionTimeController::duration LoopExecutionTimeController::GetDelta() {
+	auto now = clock::now();
+	//std::cerr<<duration(now-previousUpdate).count()<<std::endl;
+	return duration(now-previousUpdate);
+}