No one can hear you free

- Silence empty model warning behind a system property
- Fix gpu memory leak from light/matrix buffers on indirect

common/src/backend/java/dev/engine_room/flywheel/backend/engine/DrawManager.java

@@ -28,6 +28,8 @@
 import net.minecraft.client.resources.model.ModelBakery;
 
 public abstract class DrawManager<N extends AbstractInstancer<?>> {
+	private static final boolean WARN_EMPTY_MODELS = Boolean.getBoolean("flywheel.warnEmptyModels");
+
 	/**
 	 * A map of instancer keys to instancers.
 	 * <br>
@@ -100,15 +102,16 @@ private static boolean checkAndWarnEmptyModel(Model model) {
 			return true;
 		}
 
-		StringBuilder builder = new StringBuilder();
-		builder.append("Creating an instancer for a model with no meshes! Stack trace:");
+		if (WARN_EMPTY_MODELS) {
+			StringBuilder builder = new StringBuilder();
+			builder.append("Creating an instancer for a model with no meshes! Stack trace:");
 
-		StackWalker.getInstance()
-				// .walk(s -> s.skip(3)) // this causes forEach to crash for some reason
-				.forEach(f -> builder.append("\n\t")
-						.append(f.toString()));
+			StackWalker.getInstance()
+					.forEach(f -> builder.append("\n\t")
+							.append(f.toString()));
 
-		FlwBackend.LOGGER.warn(builder.toString());
+			FlwBackend.LOGGER.warn(builder.toString());
+		}
 
 		return false;
 	}

common/src/backend/java/dev/engine_room/flywheel/backend/engine/indirect/IndirectDrawManager.java

@@ -186,6 +186,10 @@ public void delete() {
 		programs.release();
 
 		depthPyramid.delete();
+
+		lightBuffers.delete();
+
+		matrixBuffer.delete();
 	}
 
 	public void renderCrumbling(List<Engine.CrumblingBlock> crumblingBlocks) {

common/src/backend/java/dev/engine_room/flywheel/backend/engine/indirect/LightBuffers.java

@@ -40,4 +40,9 @@ public void bind() {
 		GL46.glBindBufferRange(GL46.GL_SHADER_STORAGE_BUFFER, BufferBindings.LIGHT_LUT, lut.handle(), 0, lut.byteCapacity());
 		GL46.glBindBufferRange(GL46.GL_SHADER_STORAGE_BUFFER, BufferBindings.LIGHT_SECTION, sections.handle(), 0, sections.byteCapacity());
 	}
+
+	public void delete() {
+		lut.delete();
+		sections.delete();
+	}
 }

common/src/backend/java/dev/engine_room/flywheel/backend/engine/indirect/MatrixBuffer.java

@@ -30,4 +30,8 @@ public void bind() {
 
 		GL46.glBindBufferRange(GL46.GL_SHADER_STORAGE_BUFFER, BufferBindings.MATRICES, matrices.handle(), 0, matrices.byteCapacity());
 	}
+
+	public void delete() {
+		matrices.delete();
+	}
 }