Disable directional shading on fluids

Fixes #2581

build.gradle.kts

@@ -6,7 +6,7 @@ plugins {
 
 val MINECRAFT_VERSION by extra { "1.21.1" }
 val NEOFORGE_VERSION by extra { "21.1.58" }
-val FABRIC_LOADER_VERSION by extra { "0.16.4" }
+val FABRIC_LOADER_VERSION by extra { "0.16.10" }
 val FABRIC_API_VERSION by extra { "0.103.0+1.21.1" }
 
 // This value can be set to null to disable Parchment.

common/src/main/java/net/irisshaders/iris/compat/sodium/mixin/MixinDefaultFluidRenderer.java

@@ -0,0 +1,20 @@
+package net.irisshaders.iris.compat.sodium.mixin;
+
+import net.caffeinemc.mods.sodium.client.render.chunk.compile.pipeline.DefaultFluidRenderer;
+import net.irisshaders.iris.shaderpack.materialmap.WorldRenderingSettings;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.ModifyArg;
+
+@Mixin(DefaultFluidRenderer.class)
+public class MixinDefaultFluidRenderer {
+	@ModifyArg(method = "render", at = @At(value = "INVOKE", target = "Lnet/caffeinemc/mods/sodium/client/render/chunk/compile/" +
+		"pipeline/DefaultFluidRenderer;updateQuad(Lnet/caffeinemc/mods/sodium/client/model/quad/ModelQuadViewMutable;" +
+		"Lnet/caffeinemc/mods/sodium/client/world/LevelSlice;Lnet/minecraft/core/BlockPos;Lnet/caffeinemc/" +
+		"mods/sodium/client/model/light/LightPipeline;Lnet/minecraft/core/Direction;Lnet/caffeinemc/mods/" +
+		"sodium/client/model/quad/properties/ModelQuadFacing" +
+		";FLnet/caffeinemc/mods/sodium/client/model/color/ColorProvider;Lnet/minecraft/world/level/material/FluidState;)V", ordinal = 2))
+	private float setBrightness(float br) {
+		return WorldRenderingSettings.INSTANCE.shouldDisableDirectionalShading() ? 1.0f : br;
+	}
+}

common/src/main/resources/mixins.iris.compat.sodium.json

@@ -17,6 +17,7 @@
     "MixinChunkMeshBuildTask",
     "MixinCloudRenderer",
     "MixinDefaultChunkRenderer",
+    "MixinDefaultFluidRenderer",
     "MixinGlRenderDevice",
     "MixinRenderRegionArenas",
     "MixinRenderSectionManager",