TimerQuery.java

com.mojang.blaze3d.systems.TimerQuery

信息

• 全限定名：com.mojang.blaze3d.systems.TimerQuery
• 类型：public class
• 包：com.mojang.blaze3d.systems
• 源码路径：src/main/java/com/mojang/blaze3d/systems/TimerQuery.java
• 起始行号：L9
• 职责：

  TODO

字段/常量

• activeEncoder

  • 类型: CommandEncoder
  • 修饰符: private
  • 源码定位: L10
  • 说明:

    TODO

• activeGpuQuery

  • 类型: GpuQuery
  • 修饰符: private
  • 源码定位: L11
  • 说明:

    TODO

内部类/嵌套类型

• com.mojang.blaze3d.systems.TimerQuery.FrameProfile

  • 类型: class
  • 修饰符: public static
  • 源码定位: L45
  • 说明:

    TODO

• com.mojang.blaze3d.systems.TimerQuery.TimerQueryLazyLoader

  • 类型: class
  • 修饰符: private static
  • 源码定位: L94
  • 说明:

    TODO

构造器

• 无

方法

下面的方法块按源码顺序生成。

public static TimerQuery getInstance() @ L13

• 方法名：getInstance
• 源码定位：L13
• 返回类型：TimerQuery
• 修饰符：public static

参数:

• 无

说明:

TODO

public boolean isRecording() @ L17

• 方法名：isRecording
• 源码定位：L17
• 返回类型：boolean
• 修饰符：public

参数:

• 无

说明:

TODO

public void beginProfile() @ L21

• 方法名：beginProfile
• 源码定位：L21
• 返回类型：void
• 修饰符：public

参数:

• 无

说明:

TODO

public TimerQuery.FrameProfile endProfile() @ L31

• 方法名：endProfile
• 源码定位：L31
• 返回类型：TimerQuery.FrameProfile
• 修饰符：public

参数:

• 无

说明:

TODO

代码

@OnlyIn(Dist.CLIENT)
public class TimerQuery {
    private @Nullable CommandEncoder activeEncoder;
    private @Nullable GpuQuery activeGpuQuery;
 
    public static TimerQuery getInstance() {
        return TimerQuery.TimerQueryLazyLoader.INSTANCE;
    }
 
    public boolean isRecording() {
        return this.activeGpuQuery != null;
    }
 
    public void beginProfile() {
        RenderSystem.assertOnRenderThread();
        if (this.activeGpuQuery != null) {
            throw new IllegalStateException("Current profile not ended");
        } else {
            this.activeEncoder = RenderSystem.getDevice().createCommandEncoder();
            this.activeGpuQuery = this.activeEncoder.timerQueryBegin();
        }
    }
 
    public TimerQuery.FrameProfile endProfile() {
        RenderSystem.assertOnRenderThread();
        if (this.activeGpuQuery != null && this.activeEncoder != null) {
            this.activeEncoder.timerQueryEnd(this.activeGpuQuery);
            TimerQuery.FrameProfile frameProfile = new TimerQuery.FrameProfile(this.activeGpuQuery);
            this.activeGpuQuery = null;
            this.activeEncoder = null;
            return frameProfile;
        } else {
            throw new IllegalStateException("endProfile called before beginProfile");
        }
    }
 
    @OnlyIn(Dist.CLIENT)
    public static class FrameProfile {
        private static final long NO_RESULT = 0L;
        private static final long CANCELLED_RESULT = -1L;
        private final GpuQuery gpuQuery;
        private long timerResult = 0L;
 
        private FrameProfile(GpuQuery gpuQuery) {
            this.gpuQuery = gpuQuery;
        }
 
        public void cancel() {
            RenderSystem.assertOnRenderThread();
            if (this.timerResult == 0L) {
                this.timerResult = -1L;
                this.gpuQuery.close();
            }
        }
 
        public boolean isDone() {
            RenderSystem.assertOnRenderThread();
            if (this.timerResult != 0L) {
                return true;
            } else {
                OptionalLong value = this.gpuQuery.getValue();
                if (value.isPresent()) {
                    this.timerResult = value.getAsLong();
                    this.gpuQuery.close();
                    return true;
                } else {
                    return false;
                }
            }
        }
 
        public long get() {
            RenderSystem.assertOnRenderThread();
            if (this.timerResult == 0L) {
                OptionalLong value = this.gpuQuery.getValue();
                if (value.isPresent()) {
                    this.timerResult = value.getAsLong();
                    this.gpuQuery.close();
                }
            }
 
            return this.timerResult;
        }
    }
 
    @OnlyIn(Dist.CLIENT)
    private static class TimerQueryLazyLoader {
        private static final TimerQuery INSTANCE = instantiate();
 
        private static TimerQuery instantiate() {
            return new TimerQuery();
        }
    }
}

引用的其他类

• CommandEncoder

  • 引用位置: 字段

• GpuQuery

  • 引用位置: 字段

• RenderSystem

  • 引用位置: 方法调用
  • 关联成员: RenderSystem.assertOnRenderThread(), RenderSystem.getDevice()