Quartz 4

Lightmap.java

4 min read

Lightmap.java

net.minecraft.client.renderer.Lightmap

信息

  • 全限定名：net.minecraft.client.renderer.Lightmap
  • 类型：public class
  • 包：net.minecraft.client.renderer
  • 源码路径：src/main/java/net/minecraft/client/renderer/Lightmap.java
  • 起始行号：L23
  • 实现：AutoCloseable
  • 职责：

    TODO

字段/常量

  • TEXTURE_SIZE

    • 类型: int
    • 修饰符: public static final
    • 源码定位: L24
    • 说明:

      TODO

  • LIGHTMAP_UBO_SIZE

    • 类型: int
    • 修饰符: private static final
    • 源码定位: L25
    • 说明:

      TODO

  • texture

    • 类型: GpuTexture
    • 修饰符: private final
    • 源码定位: L37
    • 说明:

      TODO

  • textureView

    • 类型: GpuTextureView
    • 修饰符: private final
    • 源码定位: L38
    • 说明:

      TODO

  • ubo

    • 类型: MappableRingBuffer
    • 修饰符: private final
    • 源码定位: L39
    • 说明:

      TODO

内部类/嵌套类型

  • 无

构造器

public Lightmap() @ L41

  • 构造器名：Lightmap
  • 源码定位：L41
  • 修饰符：public

参数:

  • 无

说明:

TODO

方法

下面的方法块按源码顺序生成。

public GpuTextureView getTextureView() @ L49

  • 方法名：getTextureView
  • 源码定位：L49
  • 返回类型：GpuTextureView
  • 修饰符：public

参数:

  • 无

说明:

TODO

public void close() @ L53

  • 方法名：close
  • 源码定位：L53
  • 返回类型：void
  • 修饰符：public

参数:

  • 无

说明:

TODO

public void render(LightmapRenderState renderState) @ L60

  • 方法名：render
  • 源码定位：L60
  • 返回类型：void
  • 修饰符：public

参数:

  • renderState: LightmapRenderState

说明:

TODO

public static float getBrightness(DimensionType dimensionType, int level) @ L92

  • 方法名：getBrightness
  • 源码定位：L92
  • 返回类型：float
  • 修饰符：public static

参数:

  • dimensionType: DimensionType
  • level: int

说明:

TODO

代码

@OnlyIn(Dist.CLIENT)
public class Lightmap implements AutoCloseable {
    public static final int TEXTURE_SIZE = 16;
    private static final int LIGHTMAP_UBO_SIZE = new Std140SizeCalculator()
        .putFloat()
        .putFloat()
        .putFloat()
        .putFloat()
        .putFloat()
        .putFloat()
        .putVec3()
        .putVec3()
        .putVec3()
        .putVec3()
        .get();
    private final GpuTexture texture;
    private final GpuTextureView textureView;
    private final MappableRingBuffer ubo;
 
    public Lightmap() {
        GpuDevice device = RenderSystem.getDevice();
        this.texture = device.createTexture("Lightmap", 13, TextureFormat.RGBA8, 16, 16, 1, 1);
        this.textureView = device.createTextureView(this.texture);
        device.createCommandEncoder().clearColorTexture(this.texture, -1);
        this.ubo = new MappableRingBuffer(() -> "Lightmap UBO", 130, LIGHTMAP_UBO_SIZE);
    }
 
    public GpuTextureView getTextureView() {
        return this.textureView;
    }
 
    @Override
    public void close() {
        this.texture.close();
        this.textureView.close();
        this.ubo.close();
    }
 
    public void render(LightmapRenderState renderState) {
        if (renderState.needsUpdate) {
            ProfilerFiller profiler = Profiler.get();
            profiler.push("lightmap");
            CommandEncoder commandEncoder = RenderSystem.getDevice().createCommandEncoder();
 
            try (GpuBuffer.MappedView view = commandEncoder.mapBuffer(this.ubo.currentBuffer(), false, true)) {
                Std140Builder.intoBuffer(view.data())
                    .putFloat(renderState.skyFactor)
                    .putFloat(renderState.blockFactor)
                    .putFloat(renderState.nightVisionEffectIntensity)
                    .putFloat(renderState.darknessEffectScale)
                    .putFloat(renderState.bossOverlayWorldDarkening)
                    .putFloat(renderState.brightness)
                    .putVec3(renderState.blockLightTint)
                    .putVec3(renderState.skyLightColor)
                    .putVec3(renderState.ambientColor)
                    .putVec3(renderState.nightVisionColor);
            }
 
            try (RenderPass renderPass = commandEncoder.createRenderPass(() -> "Update light", this.textureView, OptionalInt.empty())) {
                renderPass.setPipeline(RenderPipelines.LIGHTMAP);
                RenderSystem.bindDefaultUniforms(renderPass);
                renderPass.setUniform("LightmapInfo", this.ubo.currentBuffer());
                renderPass.draw(0, 3);
            }
 
            this.ubo.rotate();
            profiler.pop();
        }
    }
 
    public static float getBrightness(DimensionType dimensionType, int level) {
        float v = level / 15.0F;
        float curvedV = v / (4.0F - 3.0F * v);
        return Mth.lerp(dimensionType.ambientLight(), curvedV, 1.0F);
    }
}

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