272 lines
11 KiB
C++
272 lines
11 KiB
C++
/*************************************************************************/
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/* xr_interface.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "xr_interface.h"
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#include "servers/rendering/renderer_compositor.h"
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void XRInterface::_bind_methods() {
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ADD_SIGNAL(MethodInfo("play_area_changed", PropertyInfo(Variant::INT, "mode")));
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ClassDB::bind_method(D_METHOD("get_name"), &XRInterface::get_name);
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ClassDB::bind_method(D_METHOD("get_capabilities"), &XRInterface::get_capabilities);
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ClassDB::bind_method(D_METHOD("is_primary"), &XRInterface::is_primary);
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ClassDB::bind_method(D_METHOD("set_primary", "primary"), &XRInterface::set_primary);
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ClassDB::bind_method(D_METHOD("is_initialized"), &XRInterface::is_initialized);
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ClassDB::bind_method(D_METHOD("initialize"), &XRInterface::initialize);
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ClassDB::bind_method(D_METHOD("uninitialize"), &XRInterface::uninitialize);
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ClassDB::bind_method(D_METHOD("get_tracking_status"), &XRInterface::get_tracking_status);
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ClassDB::bind_method(D_METHOD("get_render_target_size"), &XRInterface::get_render_target_size);
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ClassDB::bind_method(D_METHOD("get_view_count"), &XRInterface::get_view_count);
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ClassDB::bind_method(D_METHOD("trigger_haptic_pulse", "action_name", "tracker_name", "frequency", "amplitude", "duration_sec", "delay_sec"), &XRInterface::trigger_haptic_pulse);
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ADD_GROUP("Interface", "interface_");
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "interface_is_primary"), "set_primary", "is_primary");
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// methods and properties specific to VR...
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ClassDB::bind_method(D_METHOD("supports_play_area_mode", "mode"), &XRInterface::supports_play_area_mode);
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ClassDB::bind_method(D_METHOD("get_play_area_mode"), &XRInterface::get_play_area_mode);
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ClassDB::bind_method(D_METHOD("set_play_area_mode", "mode"), &XRInterface::set_play_area_mode);
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ClassDB::bind_method(D_METHOD("get_play_area"), &XRInterface::get_play_area);
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ADD_GROUP("XR", "xr_");
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ADD_PROPERTY(PropertyInfo(Variant::INT, "xr_play_area_mode", PROPERTY_HINT_ENUM, "Unknown,3DOF,Sitting,Roomscale,Stage"), "set_play_area_mode", "get_play_area_mode");
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// methods and properties specific to AR....
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ClassDB::bind_method(D_METHOD("get_anchor_detection_is_enabled"), &XRInterface::get_anchor_detection_is_enabled);
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ClassDB::bind_method(D_METHOD("set_anchor_detection_is_enabled", "enable"), &XRInterface::set_anchor_detection_is_enabled);
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ClassDB::bind_method(D_METHOD("get_camera_feed_id"), &XRInterface::get_camera_feed_id);
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ClassDB::bind_method(D_METHOD("is_passthrough_supported"), &XRInterface::is_passthrough_supported);
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ClassDB::bind_method(D_METHOD("is_passthrough_enabled"), &XRInterface::is_passthrough_enabled);
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ClassDB::bind_method(D_METHOD("start_passthrough"), &XRInterface::start_passthrough);
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ClassDB::bind_method(D_METHOD("stop_passthrough"), &XRInterface::stop_passthrough);
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ClassDB::bind_method(D_METHOD("get_transform_for_view", "view", "cam_transform"), &XRInterface::get_transform_for_view);
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ClassDB::bind_method(D_METHOD("get_projection_for_view", "view", "aspect", "near", "far"), &XRInterface::get_projection_for_view);
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ADD_GROUP("AR", "ar_");
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "ar_is_anchor_detection_enabled"), "set_anchor_detection_is_enabled", "get_anchor_detection_is_enabled");
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BIND_ENUM_CONSTANT(XR_NONE);
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BIND_ENUM_CONSTANT(XR_MONO);
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BIND_ENUM_CONSTANT(XR_STEREO);
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BIND_ENUM_CONSTANT(XR_QUAD);
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BIND_ENUM_CONSTANT(XR_VR);
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BIND_ENUM_CONSTANT(XR_AR);
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BIND_ENUM_CONSTANT(XR_EXTERNAL);
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BIND_ENUM_CONSTANT(XR_NORMAL_TRACKING);
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BIND_ENUM_CONSTANT(XR_EXCESSIVE_MOTION);
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BIND_ENUM_CONSTANT(XR_INSUFFICIENT_FEATURES);
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BIND_ENUM_CONSTANT(XR_UNKNOWN_TRACKING);
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BIND_ENUM_CONSTANT(XR_NOT_TRACKING);
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BIND_ENUM_CONSTANT(XR_PLAY_AREA_UNKNOWN);
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BIND_ENUM_CONSTANT(XR_PLAY_AREA_3DOF);
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BIND_ENUM_CONSTANT(XR_PLAY_AREA_SITTING);
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BIND_ENUM_CONSTANT(XR_PLAY_AREA_ROOMSCALE);
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BIND_ENUM_CONSTANT(XR_PLAY_AREA_STAGE);
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};
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bool XRInterface::is_primary() {
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XRServer *xr_server = XRServer::get_singleton();
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ERR_FAIL_NULL_V(xr_server, false);
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return xr_server->get_primary_interface() == this;
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}
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void XRInterface::set_primary(bool p_primary) {
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XRServer *xr_server = XRServer::get_singleton();
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ERR_FAIL_NULL(xr_server);
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if (p_primary) {
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ERR_FAIL_COND(!is_initialized());
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xr_server->set_primary_interface(this);
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} else if (xr_server->get_primary_interface() == this) {
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xr_server->set_primary_interface(nullptr);
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}
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}
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XRInterface::XRInterface() {}
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XRInterface::~XRInterface() {
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if (vrs.vrs_texture.is_valid()) {
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RS::get_singleton()->free(vrs.vrs_texture);
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vrs.vrs_texture = RID();
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}
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}
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// query if this interface supports this play area mode
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bool XRInterface::supports_play_area_mode(XRInterface::PlayAreaMode p_mode) {
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return p_mode == XR_PLAY_AREA_UNKNOWN;
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}
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// get the current play area mode
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XRInterface::PlayAreaMode XRInterface::get_play_area_mode() const {
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return XR_PLAY_AREA_UNKNOWN;
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}
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// change the play area mode, note that this should return false if the mode is not available
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bool XRInterface::set_play_area_mode(XRInterface::PlayAreaMode p_mode) {
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return p_mode == XR_PLAY_AREA_UNKNOWN;
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}
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// if available, returns an array of vectors denoting the play area the player can move around in
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PackedVector3Array XRInterface::get_play_area() const {
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// Return an empty array by default.
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// Note implementation is responsible for applying our reference frame and world scale to the raw data.
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// `play_area_changed` should be emitted if play area data is available and either the reference frame or world scale changes.
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return PackedVector3Array();
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};
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/** these will only be implemented on AR interfaces, so we want dummies for VR **/
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bool XRInterface::get_anchor_detection_is_enabled() const {
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return false;
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}
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void XRInterface::set_anchor_detection_is_enabled(bool p_enable) {
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}
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int XRInterface::get_camera_feed_id() {
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return 0;
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}
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RID XRInterface::get_vrs_texture() {
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// Default logic will return a standard VRS image based on our target size and default projections.
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// Note that this only gets called if VRS is supported on the hardware.
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Size2 texel_size = Size2(16.0, 16.0); // For now we assume we always use 16x16 texels, seems to be the standard.
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int view_count = get_view_count();
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Size2 target_size = get_render_target_size();
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real_t aspect = target_size.x / target_size.y; // is this y/x ?
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Size2 vrs_size = Size2(round(0.5 + target_size.x / texel_size.x), round(0.5 + target_size.y / texel_size.y));
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real_t radius = vrs_size.length() * 0.5;
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Size2 vrs_sizei = vrs_size;
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if (vrs.size != vrs_sizei) {
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const uint8_t densities[] = {
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0, // 1x1
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1, // 1x2
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// 4, // 2x1
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5, // 2x2
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6, // 2x4
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// 9, // 4x2
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10, // 4x4
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};
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// out with the old
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if (vrs.vrs_texture.is_valid()) {
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RS::get_singleton()->free(vrs.vrs_texture);
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vrs.vrs_texture = RID();
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}
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// in with the new
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Vector<Ref<Image>> images;
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vrs.size = vrs_sizei;
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for (int i = 0; i < view_count && i < 2; i++) {
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PackedByteArray data;
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data.resize(vrs_sizei.x * vrs_sizei.y);
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uint8_t *data_ptr = data.ptrw();
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// Our near and far don't matter much for what we're doing here, but there are some interfaces that will remember this as the near and far and may fail as a result...
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Projection cm = get_projection_for_view(i, aspect, 0.1, 1000.0);
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Vector3 center = cm.xform(Vector3(0.0, 0.0, 999.0));
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Vector2i view_center;
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view_center.x = int(vrs_size.x * (center.x + 1.0) * 0.5);
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view_center.y = int(vrs_size.y * (center.y + 1.0) * 0.5);
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int d = 0;
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for (int y = 0; y < vrs_sizei.y; y++) {
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for (int x = 0; x < vrs_sizei.x; x++) {
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Vector2 offset = Vector2(x - view_center.x, y - view_center.y);
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offset.y *= aspect;
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real_t distance = offset.length();
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int idx = round(5.0 * distance / radius);
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if (idx > 4) {
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idx = 4;
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}
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uint8_t density = densities[idx];
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data_ptr[d++] = density;
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}
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}
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images.push_back(Image::create_from_data(vrs_sizei.x, vrs_sizei.y, false, Image::FORMAT_R8, data));
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}
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if (images.size() == 1) {
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vrs.vrs_texture = RS::get_singleton()->texture_2d_create(images[0]);
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} else {
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vrs.vrs_texture = RS::get_singleton()->texture_2d_layered_create(images, RS::TEXTURE_LAYERED_2D_ARRAY);
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}
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}
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return vrs.vrs_texture;
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}
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/** these are optional, so we want dummies **/
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RID XRInterface::get_color_texture() {
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return RID();
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}
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RID XRInterface::get_depth_texture() {
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return RID();
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}
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RID XRInterface::get_velocity_texture() {
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return RID();
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}
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PackedStringArray XRInterface::get_suggested_tracker_names() const {
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PackedStringArray arr;
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return arr;
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}
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PackedStringArray XRInterface::get_suggested_pose_names(const StringName &p_tracker_name) const {
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PackedStringArray arr;
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return arr;
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}
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XRInterface::TrackingStatus XRInterface::get_tracking_status() const {
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return XR_UNKNOWN_TRACKING;
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}
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void XRInterface::trigger_haptic_pulse(const String &p_action_name, const StringName &p_tracker_name, double p_frequency, double p_amplitude, double p_duration_sec, double p_delay_sec) {
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}
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