Add RecordingVertexConsumer

- Very basic and untested

src/main/java/com/jozufozu/flywheel/backend/gl/error/GlError.java

@@ -42,9 +42,9 @@ public enum GlError {
 
 	public static void pollAndThrow(Supplier<String> context) {
 		// TODO: build flag? to enable or disable this function
-		GlError poll = GlError.poll();
+		GlError err = GlError.poll();
-		if (poll != null) {
+		if (err != null) {
-			Flywheel.log.error("{}: {}", poll.name(), context.get());
+			Flywheel.log.error("{}: {}", err.name(), context.get());
 		}
 	}
 }

src/main/java/com/jozufozu/flywheel/core/model/RecordingVertexConsumer.java

@@ -0,0 +1,70 @@
+package com.jozufozu.flywheel.core.model;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.function.Consumer;
+
+import com.google.common.collect.ImmutableList;
+import com.mojang.blaze3d.vertex.VertexConsumer;
+
+public class RecordingVertexConsumer implements VertexConsumer {
+
+	List<Consumer<VertexConsumer>> replay = new ArrayList<>();
+
+	@Override
+	public VertexConsumer vertex(double x, double y, double z) {
+		replay.add(v -> v.vertex(x, y, z));
+		return this;
+	}
+
+	@Override
+	public VertexConsumer color(int r, int g, int b, int a) {
+		replay.add(v -> v.color(r, g, b, a));
+		return this;
+	}
+
+	@Override
+	public VertexConsumer uv(float u, float v) {
+		replay.add(vc -> vc.uv(u, v));
+		return this;
+	}
+
+	@Override
+	public VertexConsumer overlayCoords(int u, int v) {
+		replay.add(vc -> vc.overlayCoords(u, v));
+		return this;
+	}
+
+	@Override
+	public VertexConsumer uv2(int u, int v) {
+		replay.add(vc -> vc.uv2(u, v));
+		return this;
+	}
+
+	@Override
+	public VertexConsumer normal(float x, float y, float z) {
+		replay.add(v -> v.normal(x, y, z));
+		return this;
+	}
+
+	@Override
+	public void endVertex() {
+		replay.add(VertexConsumer::endVertex);
+	}
+
+	@Override
+	public void defaultColor(int r, int g, int b, int a) {
+		replay.add(vc -> vc.defaultColor(r, g, b, a));
+	}
+
+	@Override
+	public void unsetDefaultColor() {
+		replay.add(VertexConsumer::unsetDefaultColor);
+	}
+
+	public VertexRecording saveRecording() {
+		VertexRecording out = new VertexRecording(ImmutableList.copyOf(replay));
+		replay.clear();
+		return out;
+	}
+}

src/main/java/com/jozufozu/flywheel/core/model/VertexRecording.java

@@ -0,0 +1,15 @@
+package com.jozufozu.flywheel.core.model;
+
+import java.util.function.Consumer;
+
+import com.google.common.collect.ImmutableList;
+import com.mojang.blaze3d.vertex.VertexConsumer;
+
+public record VertexRecording(ImmutableList<Consumer<VertexConsumer>> recording) {
+
+	public void replay(VertexConsumer vc) {
+		for (Consumer<VertexConsumer> consumer : recording) {
+			consumer.accept(vc);
+		}
+	}
+}