Differential D15817 Diff 55261 source/blender/draw/intern/draw_handle.hh

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				/* SPDX-License-Identifier: GPL-2.0-or-later
				* Copyright 2022 Blender Foundation. */

				#pragma once

				/** \file
				* \ingroup draw
				*
				* A unique identifier for each object component.
				* It is used to access each component data such as matrices and object attributes.
				* It is valid only for the current draw, it is not persistent.
				*
				* The most significant bit is used to encode if the object needs to invert the front face winding
				* because of its object matrix handedness. This is handy because this means sorting inside
				* #DrawGroup command will put all inverted commands last.
				*
				* Default value of 0 points toward an non-cull-able object with unit bounding box centered at
				* the origin.
				*/

				#include "draw_shader_shared.h"

				struct Object;
				struct DupliObject;

				namespace blender::draw {

				struct ResourceHandle {
				uint raw;

				ResourceHandle() = default;
				ResourceHandle(uint raw_) : raw(raw_){};
				ResourceHandle(uint index, bool inverted_handedness)
				{
				raw = index;
				SET_FLAG_FROM_TEST(raw, inverted_handedness, 0x80000000u);
				}

				bool has_inverted_handedness() const
				{
				return (raw & 0x80000000u) != 0;
				}

				uint resource_index() const
				{
				return (raw & 0x7FFFFFFFu);
				}
				};

				/* TODO(fclem): Move to somewhere more appropriated after cleaning up the header dependencies. */
				struct ObjectRef {
				Object *object;
				/** Dupli object that corresponds to the current object. */
				DupliObject *dupli_object;
				/** Object that created the dupli-list the current object is part of. */
				Object *dupli_parent;
				};

				}; // namespace blender::draw