Fix DH compat

build.gradle

@@ -48,6 +48,13 @@ sourceSets {
 		}
 	}
 
+	dhCompatibility {
+		java {
+			compileClasspath += main.compileClasspath
+			compileClasspath += main.output
+		}
+	}
+
 	sodiumCompatibility {
 		java {
 			compileClasspath += main.compileClasspath
@@ -72,6 +79,7 @@ loom {
 					sourceSet sourceSets.main
 					sourceSet sourceSets.vendored
 					sourceSet sourceSets.sodiumCompatibility
+					sourceSet sourceSets.dhCompatibility
 				}
 			}
 		}
@@ -108,7 +116,7 @@ dependencies {
 	forge "net.neoforged:forge:${minecraft_version}-${forge_version}"
 
 	modImplementation "org.embeddedt:embeddium-${minecraft_version}:${embeddium_version}"
-	modCompileOnly(files("DHApi.jar"))
+	modCompileOnly(files("DistantHorizons-forge-2.0.4-a-dev-1.20.1.jar"))
 
 	forgeRuntimeLibrary(implementation(shadow(project(path: ":glsl-relocated", configuration: "bundledJar")))) {
 		transitive = false
@@ -147,6 +155,7 @@ remapJar {
 
 jar {
 	from sourceSets.sodiumCompatibility.output
+	from sourceSets.dhCompatibility.output
 	from sourceSets.vendored.output
 	from sourceSets.desktop.output
 }
@@ -157,6 +166,7 @@ java {
 
 sourcesJar {
 	from sourceSets.sodiumCompatibility.allSource
+	from sourceSets.dhCompatibility.allSource
 	from sourceSets.vendored.allSource
 	from sourceSets.desktop.allSource
 }

src/main/java/net/irisshaders/iris/compat/dh/mixin/AdvancedShadowCullingFrustumMixin.java

@@ -0,0 +1,30 @@
+package net.irisshaders.iris.compat.dh.mixin;
+
+import com.seibel.distanthorizons.api.interfaces.override.rendering.IDhApiShadowCullingFrustum;
+import com.seibel.distanthorizons.coreapi.util.math.Mat4f;
+import net.irisshaders.iris.shadows.frustum.advanced.AdvancedShadowCullingFrustum;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+
+@Mixin(value = AdvancedShadowCullingFrustum.class, remap = false)
+public class AdvancedShadowCullingFrustumMixin implements IDhApiShadowCullingFrustum {
+    @Shadow
+    private int worldMinYDH;
+    @Shadow
+    private int worldMaxYDH;
+    @Shadow
+    public int isVisible(double minX, double minY, double minZ, double maxX, double maxY, double maxZ) {
+        throw new AssertionError();
+    }
+
+    @Override
+    public void update(int worldMinBlockY, int worldMaxBlockY, Mat4f worldViewProjection) {
+        this.worldMinYDH = worldMinBlockY;
+        this.worldMaxYDH = worldMaxBlockY;
+    }
+
+    @Override
+    public boolean intersects(int lodBlockPosMinX, int lodBlockPosMinZ, int lodBlockWidth, int lodDetailLevel) {
+        return this.isVisible(lodBlockPosMinX, this.worldMinYDH, lodBlockPosMinZ, lodBlockPosMinX + lodBlockWidth, this.worldMaxYDH, lodBlockPosMinZ + lodBlockWidth) != 0;
+    }
+}

src/main/java/net/irisshaders/iris/compat/dh/mixin/BoxCullingFrustumMixin.java

@@ -0,0 +1,31 @@
+package net.irisshaders.iris.compat.dh.mixin;
+
+import com.seibel.distanthorizons.api.interfaces.override.rendering.IDhApiShadowCullingFrustum;
+import com.seibel.distanthorizons.coreapi.util.math.Mat4f;
+import net.irisshaders.iris.shadows.frustum.BoxCuller;
+import net.irisshaders.iris.shadows.frustum.fallback.BoxCullingFrustum;
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+
+@Mixin(value = BoxCullingFrustum.class, remap = false)
+public class BoxCullingFrustumMixin implements IDhApiShadowCullingFrustum {
+    @Shadow
+    @Final
+    protected BoxCuller boxCuller;
+    @Shadow
+    private int worldMinYDH;
+    @Shadow
+    private int worldMaxYDH;
+
+    @Override
+    public void update(int worldMinBlockY, int worldMaxBlockY, Mat4f worldViewProjection) {
+        this.worldMinYDH = worldMinBlockY;
+        this.worldMaxYDH = worldMaxBlockY;
+    }
+
+    @Override
+    public boolean intersects(int lodBlockPosMinX, int lodBlockPosMinZ, int lodBlockWidth, int lodDetailLevel) {
+        return !boxCuller.isCulled(lodBlockPosMinX, this.worldMinYDH, lodBlockPosMinZ, lodBlockPosMinX + lodBlockWidth, this.worldMaxYDH, lodBlockPosMinZ + lodBlockWidth);
+    }
+}

src/main/java/net/irisshaders/iris/compat/dh/mixin/CullEverythingFrustumMixin.java

@@ -0,0 +1,19 @@
+package net.irisshaders.iris.compat.dh.mixin;
+
+import com.seibel.distanthorizons.api.interfaces.override.rendering.IDhApiShadowCullingFrustum;
+import com.seibel.distanthorizons.coreapi.util.math.Mat4f;
+import net.irisshaders.iris.shadows.frustum.CullEverythingFrustum;
+import org.spongepowered.asm.mixin.Mixin;
+
+@Mixin(value = CullEverythingFrustum.class, remap = false)
+public class CullEverythingFrustumMixin implements IDhApiShadowCullingFrustum {
+    @Override
+    public void update(int worldMinBlockY, int worldMaxBlockY, Mat4f worldViewProjection) {
+
+    }
+
+    @Override
+    public boolean intersects(int lodBlockPosMinX, int lodBlockPosMinZ, int lodBlockWidth, int lodDetailLevel) {
+        return false;
+    }
+}

src/main/java/net/irisshaders/iris/compat/dh/mixin/NonCullingFrustumMixin.java

@@ -0,0 +1,19 @@
+package net.irisshaders.iris.compat.dh.mixin;
+
+import com.seibel.distanthorizons.api.interfaces.override.rendering.IDhApiShadowCullingFrustum;
+import com.seibel.distanthorizons.coreapi.util.math.Mat4f;
+import net.irisshaders.iris.shadows.frustum.fallback.NonCullingFrustum;
+import org.spongepowered.asm.mixin.Mixin;
+
+@Mixin(value = NonCullingFrustum.class, remap = false)
+public class NonCullingFrustumMixin implements IDhApiShadowCullingFrustum {
+    @Override
+    public void update(int worldMinBlockY, int worldMaxBlockY, Mat4f worldViewProjection) {
+
+    }
+
+    @Override
+    public boolean intersects(int lodBlockPosMinX, int lodBlockPosMinZ, int lodBlockWidth, int lodDetailLevel) {
+        return true;
+    }
+}

src/main/java/net/irisshaders/iris/compat/dh/mixin/OculusDHCompatMixinPlugin.java

@@ -0,0 +1,46 @@
+package net.irisshaders.iris.compat.dh.mixin;
+
+import net.minecraftforge.fml.loading.LoadingModList;
+import org.objectweb.asm.tree.ClassNode;
+import org.spongepowered.asm.mixin.extensibility.IMixinConfigPlugin;
+import org.spongepowered.asm.mixin.extensibility.IMixinInfo;
+
+import java.util.List;
+import java.util.Set;
+
+public class OculusDHCompatMixinPlugin implements IMixinConfigPlugin {
+    @Override
+    public void onLoad(String s) {
+
+    }
+
+    @Override
+    public String getRefMapperConfig() {
+        return null;
+    }
+
+    @Override
+    public boolean shouldApplyMixin(String s, String s1) {
+        return LoadingModList.get().getModFileById("distanthorizons") != null;
+    }
+
+    @Override
+    public void acceptTargets(Set<String> set, Set<String> set1) {
+
+    }
+
+    @Override
+    public List<String> getMixins() {
+        return null;
+    }
+
+    @Override
+    public void preApply(String s, ClassNode classNode, String s1, IMixinInfo iMixinInfo) {
+
+    }
+
+    @Override
+    public void postApply(String s, ClassNode classNode, String s1, IMixinInfo iMixinInfo) {
+
+    }
+}