forked from StarOpenSource/Engine
Move continuous render loop to interface (now class)
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7f324090c1
commit
9c48c3c756
2 changed files with 72 additions and 49 deletions
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@ -22,9 +22,7 @@ package de.staropensource.sosengine.graphics.glfw.classes;
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import de.staropensource.sosengine.base.logging.LoggerInstance;
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import de.staropensource.sosengine.base.types.CodePart;
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import de.staropensource.sosengine.base.types.logging.LogIssuer;
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import de.staropensource.sosengine.base.utility.Math;
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import de.staropensource.sosengine.base.utility.Miscellaneous;
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import de.staropensource.sosengine.graphics.GraphicsSubsystemConfiguration;
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import de.staropensource.sosengine.graphics.classes.ApiManagementClass;
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import de.staropensource.sosengine.graphics.classes.Window;
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import de.staropensource.sosengine.graphics.glfw.exceptions.NotOnMainThreadException;
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@ -32,12 +30,11 @@ import lombok.Getter;
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import org.jetbrains.annotations.NotNull;
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import java.util.*;
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import java.util.concurrent.atomic.AtomicReference;
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import static org.lwjgl.glfw.GLFW.*;
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@Getter
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public abstract class GlfwManagementClass implements ApiManagementClass {
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public abstract class GlfwManagementClass extends ApiManagementClass {
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/**
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* Contains the {@link LoggerInstance} for this class.
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*
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@ -83,44 +80,6 @@ public abstract class GlfwManagementClass implements ApiManagementClass {
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if (!Miscellaneous.onMainThread())
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throw new NotOnMainThreadException();
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AtomicReference<LinkedHashMap<@NotNull Window, @NotNull Throwable>> output = new AtomicReference<>(new LinkedHashMap<>()); // runRenderLoop output
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long renderTime; // Amount of time spent rendering
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long sleepDuration; // Time spent sleeping the thread
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LinkedList<Long> splitDeltaTime = new LinkedList<>(); // Used for calculating the delta time (render time average over one second)
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long reportDuration = System.currentTimeMillis(); // Used for determining when to report frame count and delta time
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double deltaTime; // Contains the average render time over one second (delta time)
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// Run while the 'output' is empty
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while (output.get().isEmpty()) {
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renderTime = Miscellaneous.measureExecutionTime(() -> {
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output.set(runRenderLoop());
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frameCode.run();
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});
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// TODO v-sync is currently broken, monitor api needs to be implemented first
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// Calculate amount of time the thread should spend sleeping
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sleepDuration = (long) (1d / GraphicsSubsystemConfiguration.getInstance().getMaximumFramesPerSecond() * 1000d) - renderTime;
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// Add render and sleep time to list used for calculating the delta time value
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splitDeltaTime.add(renderTime + sleepDuration);
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try {
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//noinspection BusyWait // true, true
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Thread.sleep(sleepDuration);
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} catch (InterruptedException exception) {
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logger.crash("Rendering loop got interrupted. This is unsupported behaviour.", exception);
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}
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// Calculate delta time and frame count every second
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if (System.currentTimeMillis() >= reportDuration + 1000) {
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deltaTime = Math.getMeanLong(splitDeltaTime); // Calculate delta time
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logger.info("Delta time average: " + deltaTime + " | Frames/s: " + 1000 / deltaTime); // Print delta time and frame count to console
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reportDuration = System.currentTimeMillis(); // Update 'reportDuration'
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splitDeltaTime.clear(); // Clear 'splitDeltaTime' list
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}
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}
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return output.get();
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return super.runRenderLoopContinuously(frameCode);
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}
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}
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@ -19,33 +19,57 @@
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package de.staropensource.sosengine.graphics.classes;
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import de.staropensource.sosengine.base.logging.LoggerInstance;
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import de.staropensource.sosengine.base.types.CodePart;
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import de.staropensource.sosengine.base.types.logging.LogIssuer;
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import de.staropensource.sosengine.base.utility.Math;
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import de.staropensource.sosengine.base.utility.Miscellaneous;
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import de.staropensource.sosengine.graphics.GraphicsSubsystemConfiguration;
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import lombok.AccessLevel;
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import lombok.Getter;
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import org.jetbrains.annotations.NotNull;
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import java.util.LinkedHashMap;
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import java.util.LinkedList;
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import java.util.concurrent.atomic.AtomicReference;
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/**
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* The interface for Graphics API management classes.
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*
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* @since v1-alpha0
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*/
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@SuppressWarnings({ "unused" })
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public interface ApiManagementClass {
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@SuppressWarnings({ "unused", "JavadocDeclaration", "JavadocBlankLines" })
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public abstract class ApiManagementClass {
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/**
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* Contains the logger instance for this class.
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*
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* @since v1-alpha2
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*
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* -- GETTER --
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* Returns the logger instance for this class.
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*
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* @return logger instance
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* @since v1-alpha2
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*/
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@Getter(value = AccessLevel.PROTECTED)
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private final LoggerInstance logger = new LoggerInstance(new LogIssuer(getClass(), CodePart.ENGINE));
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/**
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* Returns if this Graphics API must be interacted with on the main thread.
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*
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* @return {@code true} if Graphics API must be interacted with on the main thread, {@code false} otherwise
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* @since v1-alpha2
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*/
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boolean mustRunOnMainThread();
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public abstract boolean mustRunOnMainThread();
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/**
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* Runs the render loop <b>once</b>.
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* To run the render loop continuously, see {@link #runRenderLoopContinuously()}.
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* To run the render loop continuously, see {@link #runRenderLoopContinuously(Runnable)}.
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*
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* @return map of windows and their thrown throwables
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* @since v1-alpha2
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*/
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LinkedHashMap<@NotNull Window, @NotNull Throwable> runRenderLoop();
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public abstract LinkedHashMap<@NotNull Window, @NotNull Throwable> runRenderLoop();
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/**
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* Runs the render loop <b>for ever</b>.
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@ -57,5 +81,45 @@ public interface ApiManagementClass {
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* @return see {@link #runRenderLoop()}
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* @since v1-alpha2
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*/
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LinkedHashMap<@NotNull Window, @NotNull Throwable> runRenderLoopContinuously(@NotNull Runnable frameCode);
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public LinkedHashMap<@NotNull Window, @NotNull Throwable> runRenderLoopContinuously(@NotNull Runnable frameCode) {
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AtomicReference<LinkedHashMap<@NotNull Window, @NotNull Throwable>> output = new AtomicReference<>(new LinkedHashMap<>()); // runRenderLoop output
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long renderTime; // Amount of time spent rendering
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long sleepDuration; // Time spent sleeping the thread
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LinkedList<Long> splitDeltaTime = new LinkedList<>(); // Used for calculating the delta time (render time average over one second)
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long reportDuration = System.currentTimeMillis(); // Used for determining when to report frame count and delta time
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double deltaTime; // Contains the average render time over one second (delta time)
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// Run while the 'output' is empty
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while (output.get().isEmpty()) {
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renderTime = Miscellaneous.measureExecutionTime(() -> {
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output.set(runRenderLoop());
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frameCode.run();
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});
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// TODO v-sync is currently broken, monitor api needs to be implemented first
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// Calculate amount of time the thread should spend sleeping
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sleepDuration = (long) (1d / GraphicsSubsystemConfiguration.getInstance().getMaximumFramesPerSecond() * 1000d) - renderTime;
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// Add render and sleep time to list used for calculating the delta time value
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splitDeltaTime.add(renderTime + sleepDuration);
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try {
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//noinspection BusyWait // true, true
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Thread.sleep(sleepDuration);
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} catch (InterruptedException exception) {
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logger.crash("Rendering loop got interrupted. This is unsupported behaviour.", exception);
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}
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// Calculate delta time and frame count every second
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if (System.currentTimeMillis() >= reportDuration + 1000) {
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deltaTime = Math.getMeanLong(splitDeltaTime); // Calculate delta time
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logger.info("Delta time average: " + deltaTime + " | Frames/s: " + 1000 / deltaTime); // Print delta time and frame count to console
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reportDuration = System.currentTimeMillis(); // Update 'reportDuration'
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splitDeltaTime.clear(); // Clear 'splitDeltaTime' list
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}
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}
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return output.get();
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}
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}
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