Added FISM optimisations, untested due to Iris code not building

common/src/main/java/net/irisshaders/iris/mixin/AbstractSignRendererMixin.java

@@ -0,0 +1,19 @@
+package net.irisshaders.iris.mixin;
+
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+import net.irisshaders.iris.apiimpl.IrisApiV0Impl;
+import net.minecraft.client.renderer.blockentity.AbstractSignRenderer;
+
+@Mixin(AbstractSignRenderer.class)
+public abstract class AbstractSignRendererMixin {
+    // maDU59_ was here =D
+    // Sign text does not need to be rendered during the shadow pass as it's not visible in the shadow anyway
+    @Inject(method = "submitSignText", at = @At("HEAD"), cancellable = true)
+    public void fism$cancelSignTextRendering(CallbackInfo ci){
+        if(IrisApiV0Impl.INSTANCE.isRenderingShadowPass()) ci.cancel();
+    }
+}

common/src/main/java/net/irisshaders/iris/mixin/BannerRendererAccessor.java

@@ -0,0 +1,22 @@
+package net.irisshaders.iris.mixin;
+
+import org.jspecify.annotations.Nullable;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.gen.Invoker;
+
+import com.mojang.blaze3d.vertex.PoseStack;
+
+import net.minecraft.client.model.Model;
+import net.minecraft.client.renderer.SubmitNodeCollector;
+import net.minecraft.client.renderer.blockentity.BannerRenderer;
+import net.minecraft.client.renderer.feature.ModelFeatureRenderer;
+import net.minecraft.client.resources.model.sprite.SpriteGetter;
+import net.minecraft.client.resources.model.sprite.SpriteId;
+import net.minecraft.world.item.DyeColor;
+
+@Mixin(BannerRenderer.class)
+public interface BannerRendererAccessor {
+    // maDU59_ was here =D
+    @Invoker("submitPatternLayer")
+    static <S> void fism$submitPatternLayerInvoke(final SpriteGetter sprites, final PoseStack poseStack, final SubmitNodeCollector submitNodeCollector, final int lightCoords, final int overlayCoords, final Model<S> model, final S state, final SpriteId sprite, final DyeColor color, final ModelFeatureRenderer.@Nullable CrumblingOverlay breakProgress){};
+}

common/src/main/java/net/irisshaders/iris/mixin/BannerRendererMixin.java

@@ -0,0 +1,32 @@
+package net.irisshaders.iris.mixin;
+
+import org.jspecify.annotations.Nullable;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+import com.mojang.blaze3d.vertex.PoseStack;
+
+import net.irisshaders.iris.apiimpl.IrisApiV0Impl;
+import net.minecraft.client.model.Model;
+import net.minecraft.client.renderer.Sheets;
+import net.minecraft.client.renderer.SubmitNodeCollector;
+import net.minecraft.client.renderer.blockentity.BannerRenderer;
+import net.minecraft.client.renderer.feature.ModelFeatureRenderer;
+import net.minecraft.client.resources.model.sprite.SpriteGetter;
+import net.minecraft.world.item.DyeColor;
+import net.minecraft.world.level.block.entity.BannerPatternLayers;
+
+@Mixin(BannerRenderer.class)
+public abstract class BannerRendererMixin {
+    // maDU59_ was here =D
+    // Banner patterns do not need to be rendered during the shadow pass as they are not visible anyway
+    @Inject(method = "submitPatterns", at = @At("HEAD"), cancellable = true)
+    private static <S> void fism$cancelSubmitPatterns(final SpriteGetter sprites, final PoseStack poseStack, final SubmitNodeCollector submitNodeCollector, final int lightCoords, final int overlayCoords, final Model<S> model, final S state, final boolean banner, final DyeColor baseColor, final BannerPatternLayers patterns, final ModelFeatureRenderer.@Nullable CrumblingOverlay breakProgress, CallbackInfo ci) {
+        if(IrisApiV0Impl.INSTANCE.isRenderingShadowPass()) {
+            BannerRendererAccessor.fism$submitPatternLayerInvoke(sprites, poseStack, submitNodeCollector, lightCoords, overlayCoords, model, state, banner ? Sheets.BANNER_PATTERN_BASE : Sheets.SHIELD_PATTERN_BASE, baseColor, breakProgress);
+            ci.cancel();
+        }
+    }
+}

common/src/main/java/net/irisshaders/iris/mixin/ItemStackMixin.java

@@ -0,0 +1,19 @@
+package net.irisshaders.iris.mixin;
+
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+import net.irisshaders.iris.apiimpl.IrisApiV0Impl;
+import net.minecraft.world.item.ItemStack;
+
+@Mixin(ItemStack.class)
+public abstract class ItemStackMixin {
+    // maDU59_ was here =D
+    // Enchantment glint does not need to be rendered during the shadow pass as it's not visible in the shadow anyway
+    @Inject(method = "hasFoil", at = @At("HEAD"), cancellable = true)
+    private void fism$cancelGlintRendering(CallbackInfoReturnable<Boolean> cir){
+        if(IrisApiV0Impl.INSTANCE.isRenderingShadowPass()) cir.setReturnValue(false);
+    }
+}

common/src/main/java/net/irisshaders/iris/mixin/MapRendererMixin.java

@@ -0,0 +1,21 @@
+package net.irisshaders.iris.mixin;
+
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+import net.irisshaders.iris.apiimpl.IrisApiV0Impl;
+import net.minecraft.client.renderer.MapRenderer;
+
+@Mixin(MapRenderer.class)
+public abstract class MapRendererMixin {
+    // maDU59_ was here =D
+    // Maps in item frames do not need to be rendered during the shadow pass as they are not visible in the shadow anyway
+    @Inject(method = "render", at = @At("HEAD"), cancellable = true)
+    public <S> void fism$cancelMapRendering(CallbackInfo ci) {
+        if(IrisApiV0Impl.INSTANCE.isRenderingShadowPass()) {
+            ci.cancel();
+        }
+    }
+}

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

@@ -99,6 +99,11 @@
     "entity_render_context.MixinModelStorageTrigger",
     "entity_render_context.ItemStackStateMixin",
     "entity_render_context.ItemStackStateLayerMixin",
+    "AbstractSignRendererMixin",
+		"BannerRendererAccessor",
+		"BannerRendererMixin",
+		"MapRendererMixin",
+		"ItemStackMixin",
     "fabulous.MixinDisableFabulousGraphics",
     "gui.MixinGui",
     "gui.MixinVideoSettingsScreen",