Draw particles, weather and clouds into composited layers

scripts/flyby-scenes/translucency-layers.txt

@@ -0,0 +1,58 @@
+# Translucency layer scene for a generated superflat (windows-flyby-kit/make_world.py). $x $y $z is the flight start;
+# ground-standing level is $y-2. Start facing south (yaw 0), pitch 15. Use with -Dangelica.flyby.weather=RAIN. Torch
+# flame and smoke and rain fall in front of a light blue glass wall and a water pool; one torch row stands behind the glass.
+
+gamerule doMobSpawning false
+
+# glass wall
+setblock $x-1 $y-2 $z+9 stained_glass 3 replace
+setblock $x-1 $y-1 $z+9 stained_glass 3 replace
+setblock $x-1 $y+0 $z+9 stained_glass 3 replace
+setblock $x+0 $y-2 $z+9 stained_glass 3 replace
+setblock $x+0 $y-1 $z+9 stained_glass 3 replace
+setblock $x+0 $y+0 $z+9 stained_glass 3 replace
+setblock $x+1 $y-2 $z+9 stained_glass 3 replace
+setblock $x+1 $y-1 $z+9 stained_glass 3 replace
+setblock $x+1 $y+0 $z+9 stained_glass 3 replace
+setblock $x+2 $y-2 $z+9 stained_glass 3 replace
+setblock $x+2 $y-1 $z+9 stained_glass 3 replace
+setblock $x+2 $y+0 $z+9 stained_glass 3 replace
+setblock $x+3 $y-2 $z+9 stained_glass 3 replace
+setblock $x+3 $y-1 $z+9 stained_glass 3 replace
+setblock $x+3 $y+0 $z+9 stained_glass 3 replace
+
+# torches in front of and behind the glass
+setblock $x-1 $y-2 $z+7 torch 5 replace
+setblock $x-1 $y-2 $z+11 torch 5 replace
+setblock $x+0 $y-2 $z+7 torch 5 replace
+setblock $x+0 $y-2 $z+11 torch 5 replace
+setblock $x+1 $y-2 $z+7 torch 5 replace
+setblock $x+1 $y-2 $z+11 torch 5 replace
+setblock $x+2 $y-2 $z+7 torch 5 replace
+setblock $x+2 $y-2 $z+11 torch 5 replace
+setblock $x+3 $y-2 $z+7 torch 5 replace
+setblock $x+3 $y-2 $z+11 torch 5 replace
+
+# water pool with torches in front of it
+setblock $x-6 $y-3 $z+7 water 0 replace
+setblock $x-6 $y-3 $z+8 water 0 replace
+setblock $x-6 $y-3 $z+9 water 0 replace
+setblock $x-6 $y-3 $z+10 water 0 replace
+setblock $x-5 $y-3 $z+7 water 0 replace
+setblock $x-5 $y-3 $z+8 water 0 replace
+setblock $x-5 $y-3 $z+9 water 0 replace
+setblock $x-5 $y-3 $z+10 water 0 replace
+setblock $x-4 $y-3 $z+7 water 0 replace
+setblock $x-4 $y-3 $z+8 water 0 replace
+setblock $x-4 $y-3 $z+9 water 0 replace
+setblock $x-4 $y-3 $z+10 water 0 replace
+setblock $x-3 $y-3 $z+7 water 0 replace
+setblock $x-3 $y-3 $z+8 water 0 replace
+setblock $x-3 $y-3 $z+9 water 0 replace
+setblock $x-3 $y-3 $z+10 water 0 replace
+setblock $x-2 $y-3 $z+7 water 0 replace
+setblock $x-2 $y-3 $z+8 water 0 replace
+setblock $x-2 $y-3 $z+9 water 0 replace
+setblock $x-2 $y-3 $z+10 water 0 replace
+setblock $x-5 $y-2 $z+6 torch 5 replace
+setblock $x-3 $y-2 $z+6 torch 5 replace

src/mixin/java/com/gtnewhorizons/angelica/mixins/early/angelica/rendering/MixinEntityRenderer_TranslucencyLayers.java

@@ -1,6 +1,11 @@
 package com.gtnewhorizons.angelica.mixins.early.angelica.rendering;
 
+import com.gtnewhorizons.angelica.experimental.surround.Surround;
+import com.gtnewhorizons.angelica.glsm.GLSMDepthStencilAlpha;
 import com.gtnewhorizons.angelica.rendering.translucency.TranslucencyLayers;
+import com.gtnewhorizons.angelica.rendering.translucency.TranslucentLayer;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.multiplayer.WorldClient;
 import net.minecraft.client.renderer.EntityRenderer;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.injection.At;
@@ -19,4 +24,40 @@ public class MixinEntityRenderer_TranslucencyLayers {
     private void angelica$compositeTranslucencyLayers(float partialTicks, long finishTimeNano, CallbackInfo ci) {
         TranslucencyLayers.INSTANCE.composite();
     }
+
+    @Surround(id = "translucencyParticles", method = "renderWorld(FJ)V", expect = 2, at = {
+        @At(value = "INVOKE", target = "Lnet/minecraft/client/particle/EffectRenderer;renderLitParticles(Lnet/minecraft/entity/Entity;F)V"),
+        @At(value = "INVOKE", target = "Lnet/minecraft/client/particle/EffectRenderer;renderParticles(Lnet/minecraft/entity/Entity;F)V") })
+    private void angelica$particlesLayer() {
+        @Surround.Carry boolean layered = TranslucencyLayers.INSTANCE.beginIfActive(TranslucentLayer.PARTICLES);
+    }
+
+    @Surround.Finally("translucencyParticles")
+    private void angelica$particlesLayerEnd(@Surround.Carry boolean layered) {
+        if (layered) TranslucencyLayers.INSTANCE.end();
+    }
+
+    @Surround(id = "translucencyWeather", method = "renderWorld(FJ)V", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/renderer/EntityRenderer;renderRainSnow(F)V"))
+    private void angelica$weatherLayer(@Surround.Local(argsOnly = true) float partialTicks) {
+        final WorldClient world = Minecraft.getMinecraft().theWorld;
+        @Surround.Carry boolean layered = (world.getRainStrength(partialTicks) > 0.0F || world.provider.getWeatherRenderer() != null)
+            && TranslucencyLayers.INSTANCE.beginIfActive(TranslucentLayer.WEATHER);
+        // Rain writes no depth, which would leave the layer sorting at the opaque depth behind it.
+        if (layered) GLSMDepthStencilAlpha.glDepthMask(true);
+    }
+
+    @Surround.Finally("translucencyWeather")
+    private void angelica$weatherLayerEnd(@Surround.Carry boolean layered) {
+        if (layered) TranslucencyLayers.INSTANCE.end();
+    }
+
+    @Surround(id = "translucencyClouds", method = "renderWorld(FJ)V", at = @At(value = "INVOKE", ordinal = 1, target = "Lnet/minecraft/client/renderer/EntityRenderer;renderCloudsCheck(Lnet/minecraft/client/renderer/RenderGlobal;F)V"))
+    private void angelica$cloudsLayer() {
+        @Surround.Carry boolean layered = Minecraft.getMinecraft().gameSettings.shouldRenderClouds() && TranslucencyLayers.INSTANCE.beginIfActive(TranslucentLayer.CLOUDS);
+    }
+
+    @Surround.Finally("translucencyClouds")
+    private void angelica$cloudsLayerEnd(@Surround.Carry boolean layered) {
+        if (layered) TranslucencyLayers.INSTANCE.end();
+    }
 }