138 lines
5.3 KiB
C++
138 lines
5.3 KiB
C++
/*************************************************************************/
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/* static_raycaster_embree.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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#ifdef TOOLS_ENABLED
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#include "static_raycaster_embree.h"
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#ifdef __SSE2__
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#include <pmmintrin.h>
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#endif
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RTCDevice StaticRaycasterEmbree::embree_device;
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StaticRaycaster *StaticRaycasterEmbree::create_embree_raycaster() {
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return memnew(StaticRaycasterEmbree);
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}
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void StaticRaycasterEmbree::make_default_raycaster() {
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create_function = create_embree_raycaster;
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}
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void StaticRaycasterEmbree::free() {
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if (embree_device) {
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rtcReleaseDevice(embree_device);
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}
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}
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bool StaticRaycasterEmbree::intersect(Ray &r_ray) {
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RTCIntersectContext context;
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rtcInitIntersectContext(&context);
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rtcIntersect1(embree_scene, &context, (RTCRayHit *)&r_ray);
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return r_ray.geomID != RTC_INVALID_GEOMETRY_ID;
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}
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void StaticRaycasterEmbree::intersect(Vector<Ray> &r_rays) {
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Ray *rays = r_rays.ptrw();
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for (int i = 0; i < r_rays.size(); ++i) {
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intersect(rays[i]);
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}
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}
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void StaticRaycasterEmbree::add_mesh(const PackedVector3Array &p_vertices, const PackedInt32Array &p_indices, unsigned int p_id) {
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RTCGeometry embree_mesh = rtcNewGeometry(embree_device, RTC_GEOMETRY_TYPE_TRIANGLE);
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int vertex_count = p_vertices.size();
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Vector3 *embree_vertices = (Vector3 *)rtcSetNewGeometryBuffer(embree_mesh, RTC_BUFFER_TYPE_VERTEX, 0, RTC_FORMAT_FLOAT3, sizeof(Vector3), vertex_count);
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memcpy(embree_vertices, p_vertices.ptr(), sizeof(Vector3) * vertex_count);
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if (p_indices.is_empty()) {
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ERR_FAIL_COND(vertex_count % 3 != 0);
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uint32_t *embree_triangles = (uint32_t *)rtcSetNewGeometryBuffer(embree_mesh, RTC_BUFFER_TYPE_INDEX, 0, RTC_FORMAT_UINT3, sizeof(uint32_t) * 3, vertex_count / 3);
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for (int i = 0; i < vertex_count; i++) {
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embree_triangles[i] = i;
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}
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} else {
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uint32_t *embree_triangles = (uint32_t *)rtcSetNewGeometryBuffer(embree_mesh, RTC_BUFFER_TYPE_INDEX, 0, RTC_FORMAT_UINT3, sizeof(uint32_t) * 3, p_indices.size() / 3);
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memcpy(embree_triangles, p_indices.ptr(), sizeof(uint32_t) * p_indices.size());
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}
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rtcCommitGeometry(embree_mesh);
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rtcAttachGeometryByID(embree_scene, embree_mesh, p_id);
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rtcReleaseGeometry(embree_mesh);
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}
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void StaticRaycasterEmbree::commit() {
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rtcCommitScene(embree_scene);
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}
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void StaticRaycasterEmbree::set_mesh_filter(const HashSet<int> &p_mesh_ids) {
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for (const int &E : p_mesh_ids) {
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rtcDisableGeometry(rtcGetGeometry(embree_scene, E));
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}
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rtcCommitScene(embree_scene);
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filter_meshes = p_mesh_ids;
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}
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void StaticRaycasterEmbree::clear_mesh_filter() {
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for (const int &E : filter_meshes) {
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rtcEnableGeometry(rtcGetGeometry(embree_scene, E));
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}
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rtcCommitScene(embree_scene);
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filter_meshes.clear();
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}
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void embree_error_handler(void *p_user_data, RTCError p_code, const char *p_str) {
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print_error("Embree error: " + String(p_str));
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}
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StaticRaycasterEmbree::StaticRaycasterEmbree() {
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#ifdef __SSE2__
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_MM_SET_FLUSH_ZERO_MODE(_MM_FLUSH_ZERO_ON);
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_MM_SET_DENORMALS_ZERO_MODE(_MM_DENORMALS_ZERO_ON);
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#endif
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if (!embree_device) {
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embree_device = rtcNewDevice(nullptr);
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rtcSetDeviceErrorFunction(embree_device, &embree_error_handler, nullptr);
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}
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embree_scene = rtcNewScene(embree_device);
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}
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StaticRaycasterEmbree::~StaticRaycasterEmbree() {
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if (embree_scene != nullptr) {
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rtcReleaseScene(embree_scene);
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}
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}
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#endif // TOOLS_ENABLED
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