Multi-layer rendering support

src/main/kotlin/mods/betterfoliage/render/pipeline/RenderCtxVanilla.kt

@@ -2,28 +2,31 @@ package mods.betterfoliage.render.pipeline
 
 import com.mojang.blaze3d.matrix.MatrixStack
 import com.mojang.blaze3d.vertex.IVertexBuilder
+import mods.betterfoliage.chunk.BasicBlockCtx
+import mods.betterfoliage.chunk.BlockCtx
 import mods.betterfoliage.model.HalfBakedQuad
 import mods.betterfoliage.model.SpecialRenderModel
+import mods.betterfoliage.util.getWithDefault
 import net.minecraft.block.BlockState
 import net.minecraft.client.renderer.BlockModelRenderer
 import net.minecraft.util.math.BlockPos
 import net.minecraft.world.IBlockDisplayReader
+import net.minecraftforge.client.MinecraftForgeClient
 import net.minecraftforge.client.model.data.IModelData
 import java.util.Random
 
 class RenderCtxVanilla(
     val renderer: BlockModelRenderer,
-    world: IBlockDisplayReader,
-    pos: BlockPos,
+    blockCtx: BlockCtx,
     val buffer: IVertexBuilder,
     val combinedOverlay: Int,
     matrixStack: MatrixStack,
     checkSides: Boolean,
     random: Random,
-    val seed: Long,
+    val randomSeed: Long,
     modelData: IModelData,
     val useAO: Boolean
-): RenderCtxBase(world, pos, matrixStack, checkSides, random, modelData) {
+): RenderCtxBase(blockCtx, matrixStack, checkSides, random, modelData) {
 
     override fun renderQuad(quad: HalfBakedQuad) {
         vertexLighter.updateLightmapAndColor(quad, lightingData)
@@ -47,20 +50,16 @@ class RenderCtxVanilla(
             buffer: IVertexBuilder,
             checkSides: Boolean,
             random: Random,
-            rand: Long,
+            seed: Long,
             combinedOverlay: Int,
             modelData: IModelData,
             smooth: Boolean
         ): Boolean {
-            random.setSeed(rand)
-            val ctx = RenderCtxVanilla(renderer, world, pos, buffer, combinedOverlay, matrixStack, checkSides, random, rand, modelData, smooth)
-            lightingData.apply {
-
-            }
-            model.render(ctx, false)
+            val blockCtx = BasicBlockCtx(world, pos)
+            // init context if missing (this is the first render layer)
+            val ctx = RenderCtxVanilla(renderer, blockCtx, buffer, combinedOverlay, matrixStack, checkSides, random, seed, modelData, smooth)
+            model.renderLayer(ctx, specialRenderData.get()!!, MinecraftForgeClient.getRenderLayer())
             return ctx.hasRendered
         }
-
-
     }
 }