Function on_copy_texture

examples/08-texture_replace/texture_replace_addon.cpp:55–92

}

static bool on_copy_texture(command_list *cmd_list, resource source, uint32_t source_subresource, const subresource_box *, resource dest, uint32_t dest_subresource, const subresource_box *dest_box, filter_mode)
{
	if (source_subresource != 0 || source_subresource != dest_subresource)
		return false; // Ignore copies to mipmap levels other than the base level

	device *const device = cmd_list->get_device();

	const resource_desc source_desc = device->get_resource_desc(source);
	if (source_desc.heap != memory_heap::cpu_to_gpu)
		return false; // Ignore copies that are not from a buffer in host memory

	const resource_desc dest_desc = device->get_resource_desc(dest);
	if (!filter_texture(device, dest_desc, dest_box))
		return false;

	bool replace = false;

	subresource_data new_data;
	if (device->map_texture_region(source, source_subresource, nullptr, map_access::read_only, &new_data))
	{
		replace = load_texture_image(dest_desc, new_data, s_data_to_delete);

		device->unmap_texture_region(source, source_subresource);
	}

	if (replace)
	{
		// Update texture with the new data
		device->update_texture_region(new_data, dest, dest_subresource, dest_box);

		// Free the memory allocated via the 'load_texture_image' call above
		s_data_to_delete.clear();

		return true; // Texture was already updated now, so skip the original copy command from the application
	}

	return false;
}
static bool on_update_texture(device *device, const subresource_data &data, resource dst, uint32_t dst_subresource, const subresource_box *dst_box)
{
	if (dst_subresource != 0)