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package org.chrisoft.trashyaddon.mixin;

import meteordevelopment.meteorclient.utils.render.color.Color;
import meteordevelopment.meteorclient.utils.render.postprocess.PostProcessShaders;
import net.minecraft.client.gl.Framebuffer;
import net.minecraft.client.render.VertexConsumerProvider;
import net.minecraft.client.render.WorldRenderer;
import net.minecraft.client.util.math.MatrixStack;
import net.minecraft.entity.Entity;
import meteordevelopment.meteorclient.utils.render.postprocess.EntityShader;
import org.chrisoft.trashyaddon.commands.EntityHighlightCommand;
import org.chrisoft.trashyaddon.misc.AddonPostProcessingShaders;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.Shadow;
import org.spongepowered.asm.mixin.Unique;
import org.spongepowered.asm.mixin.injection.At;
import org.spongepowered.asm.mixin.injection.Inject;
import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;

@Mixin(value = WorldRenderer.class, priority = 999)
public abstract class WorldRendererMixin {
    @Shadow
    private Framebuffer entityOutlinesFramebuffer;
    @Shadow
    protected abstract void renderEntity(Entity entity, double cameraX, double cameraY, double cameraZ, float tickDelta, MatrixStack matrices, VertexConsumerProvider vertexConsumers);

    @Inject(method = "renderEntity", at = @At("HEAD"))
    private void renderEntity(Entity entity, double cameraX, double cameraY, double cameraZ, float tickDelta, MatrixStack matrices, VertexConsumerProvider vertexConsumers, CallbackInfo info) {
        for (EntityShader es : AddonPostProcessingShaders.entityShaders) {
            drawShaded(entity, cameraX, cameraY, cameraZ, tickDelta, vertexConsumers, matrices, es, EntityHighlightCommand.getEntityColor(entity));
        }
    }

    @Unique
    private void drawShaded(Entity entity, double cameraX, double cameraY, double cameraZ, float tickDelta, VertexConsumerProvider vertexConsumers, MatrixStack matrices, EntityShader shader, Color color) {
        if (shader.shouldDraw(entity) && !PostProcessShaders.isCustom(vertexConsumers) && color != null) {
            Framebuffer prevBuffer = this.entityOutlinesFramebuffer;
            this.entityOutlinesFramebuffer = shader.framebuffer;
            PostProcessShaders.rendering = true;

            shader.vertexConsumerProvider.setColor(color.r, color.g, color.b, color.a);
            renderEntity(entity, cameraX, cameraY, cameraZ, tickDelta, matrices, shader.vertexConsumerProvider);

            PostProcessShaders.rendering = false;
            this.entityOutlinesFramebuffer = prevBuffer;
        }
    }
}