Method buffer_copy

servers/rendering/rendering_device.cpp:420–459

}

Error RenderingDevice::buffer_copy(RID p_src_buffer, RID p_dst_buffer, uint32_t p_src_offset, uint32_t p_dst_offset, uint32_t p_size) {
	ERR_RENDER_THREAD_GUARD_V(ERR_UNAVAILABLE);

	ERR_FAIL_COND_V_MSG(draw_list.active, ERR_INVALID_PARAMETER,
			"Copying buffers is forbidden during creation of a draw list");
	ERR_FAIL_COND_V_MSG(compute_list.active, ERR_INVALID_PARAMETER,
			"Copying buffers is forbidden during creation of a compute list");

	Buffer *src_buffer = _get_buffer_from_owner(p_src_buffer);
	if (!src_buffer) {
		ERR_FAIL_V_MSG(ERR_INVALID_PARAMETER, "Source buffer argument is not a valid buffer of any type.");
	}

	Buffer *dst_buffer = _get_buffer_from_owner(p_dst_buffer);
	if (!dst_buffer) {
		ERR_FAIL_V_MSG(ERR_INVALID_PARAMETER, "Destination buffer argument is not a valid buffer of any type.");
	}

	// Validate the copy's dimensions for both buffers.
	ERR_FAIL_COND_V_MSG((p_size + p_src_offset) > src_buffer->size, ERR_INVALID_PARAMETER, "Size is larger than the source buffer.");
	ERR_FAIL_COND_V_MSG((p_size + p_dst_offset) > dst_buffer->size, ERR_INVALID_PARAMETER, "Size is larger than the destination buffer.");

	_check_transfer_worker_buffer(src_buffer);
	_check_transfer_worker_buffer(dst_buffer);

	// Perform the copy.
	RDD::BufferCopyRegion region;
	region.src_offset = p_src_offset;
	region.dst_offset = p_dst_offset;
	region.size = p_size;

	if (_buffer_make_mutable(dst_buffer, p_dst_buffer)) {
		// The destination buffer must be mutable to be used as a copy destination.
		draw_graph.add_synchronization();
	}

	draw_graph.add_buffer_copy(src_buffer->driver_id, src_buffer->draw_tracker, dst_buffer->driver_id, dst_buffer->draw_tracker, region);

	return OK;
}

Error RenderingDevice::buffer_update(RID p_buffer, uint32_t p_offset, uint32_t p_size, const void *p_data) {
	ERR_RENDER_THREAD_GUARD_V(ERR_UNAVAILABLE);