746dddc067
* Map is unnecessary and inefficient in almost every case. * Replaced by the new HashMap. * Renamed Map to RBMap and Set to RBSet for cases that still make sense (order matters) but use is discouraged. There were very few cases where replacing by HashMap was undesired because keeping the key order was intended. I tried to keep those (as RBMap) as much as possible, but might have missed some. Review appreciated!
196 lines
7.5 KiB
C++
196 lines
7.5 KiB
C++
/*************************************************************************/
|
|
/* lightmap_raycaster.cpp */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/*************************************************************************/
|
|
|
|
#ifdef TOOLS_ENABLED
|
|
|
|
#include "lightmap_raycaster.h"
|
|
|
|
#ifdef __SSE2__
|
|
#include <pmmintrin.h>
|
|
#endif
|
|
|
|
LightmapRaycaster *LightmapRaycasterEmbree::create_embree_raycaster() {
|
|
return memnew(LightmapRaycasterEmbree);
|
|
}
|
|
|
|
void LightmapRaycasterEmbree::make_default_raycaster() {
|
|
create_function = create_embree_raycaster;
|
|
}
|
|
|
|
void LightmapRaycasterEmbree::filter_function(const struct RTCFilterFunctionNArguments *p_args) {
|
|
RTCHit *hit = (RTCHit *)p_args->hit;
|
|
|
|
unsigned int geomID = hit->geomID;
|
|
float u = hit->u;
|
|
float v = hit->v;
|
|
|
|
LightmapRaycasterEmbree *scene = (LightmapRaycasterEmbree *)p_args->geometryUserPtr;
|
|
RTCGeometry geom = rtcGetGeometry(scene->embree_scene, geomID);
|
|
|
|
rtcInterpolate0(geom, hit->primID, hit->u, hit->v, RTC_BUFFER_TYPE_VERTEX_ATTRIBUTE, 0, &hit->u, 2);
|
|
|
|
if (scene->alpha_textures.has(geomID)) {
|
|
const AlphaTextureData &alpha_texture = scene->alpha_textures[geomID];
|
|
|
|
if (alpha_texture.sample(hit->u, hit->v) < 128) {
|
|
p_args->valid[0] = 0;
|
|
return;
|
|
}
|
|
}
|
|
|
|
rtcInterpolate0(geom, hit->primID, u, v, RTC_BUFFER_TYPE_VERTEX_ATTRIBUTE, 1, &hit->Ng_x, 3);
|
|
}
|
|
|
|
bool LightmapRaycasterEmbree::intersect(Ray &r_ray) {
|
|
RTCIntersectContext context;
|
|
|
|
rtcInitIntersectContext(&context);
|
|
|
|
rtcIntersect1(embree_scene, &context, (RTCRayHit *)&r_ray);
|
|
return r_ray.geomID != RTC_INVALID_GEOMETRY_ID;
|
|
}
|
|
|
|
void LightmapRaycasterEmbree::intersect(Vector<Ray> &r_rays) {
|
|
Ray *rays = r_rays.ptrw();
|
|
for (int i = 0; i < r_rays.size(); ++i) {
|
|
intersect(rays[i]);
|
|
}
|
|
}
|
|
|
|
void LightmapRaycasterEmbree::set_mesh_alpha_texture(Ref<Image> p_alpha_texture, unsigned int p_id) {
|
|
if (p_alpha_texture.is_valid() && p_alpha_texture->get_size() != Vector2i()) {
|
|
AlphaTextureData tex;
|
|
tex.size = p_alpha_texture->get_size();
|
|
tex.data = p_alpha_texture->get_data();
|
|
alpha_textures.insert(p_id, tex);
|
|
}
|
|
}
|
|
|
|
float blerp(float c00, float c10, float c01, float c11, float tx, float ty) {
|
|
return Math::lerp(Math::lerp(c00, c10, tx), Math::lerp(c01, c11, tx), ty);
|
|
}
|
|
|
|
uint8_t LightmapRaycasterEmbree::AlphaTextureData::sample(float u, float v) const {
|
|
float x = u * size.x;
|
|
float y = v * size.y;
|
|
int xi = (int)x;
|
|
int yi = (int)y;
|
|
|
|
uint8_t texels[4];
|
|
|
|
for (int i = 0; i < 4; ++i) {
|
|
int sample_x = CLAMP(xi + i % 2, 0, size.x - 1);
|
|
int sample_y = CLAMP(yi + i / 2, 0, size.y - 1);
|
|
texels[i] = data[sample_y * size.x + sample_x];
|
|
}
|
|
|
|
return Math::round(blerp(texels[0], texels[1], texels[2], texels[3], x - xi, y - yi));
|
|
}
|
|
|
|
void LightmapRaycasterEmbree::add_mesh(const Vector<Vector3> &p_vertices, const Vector<Vector3> &p_normals, const Vector<Vector2> &p_uv2s, unsigned int p_id) {
|
|
RTCGeometry embree_mesh = rtcNewGeometry(embree_device, RTC_GEOMETRY_TYPE_TRIANGLE);
|
|
|
|
rtcSetGeometryVertexAttributeCount(embree_mesh, 2);
|
|
|
|
int vertex_count = p_vertices.size();
|
|
|
|
ERR_FAIL_COND(vertex_count % 3 != 0);
|
|
ERR_FAIL_COND(vertex_count != p_uv2s.size());
|
|
ERR_FAIL_COND(!p_normals.is_empty() && vertex_count != p_normals.size());
|
|
|
|
Vector3 *embree_vertices = (Vector3 *)rtcSetNewGeometryBuffer(embree_mesh, RTC_BUFFER_TYPE_VERTEX, 0, RTC_FORMAT_FLOAT3, sizeof(Vector3), vertex_count);
|
|
memcpy(embree_vertices, p_vertices.ptr(), sizeof(Vector3) * vertex_count);
|
|
|
|
Vector2 *embree_light_uvs = (Vector2 *)rtcSetNewGeometryBuffer(embree_mesh, RTC_BUFFER_TYPE_VERTEX_ATTRIBUTE, 0, RTC_FORMAT_FLOAT2, sizeof(Vector2), vertex_count);
|
|
memcpy(embree_light_uvs, p_uv2s.ptr(), sizeof(Vector2) * vertex_count);
|
|
|
|
uint32_t *embree_triangles = (uint32_t *)rtcSetNewGeometryBuffer(embree_mesh, RTC_BUFFER_TYPE_INDEX, 0, RTC_FORMAT_UINT3, sizeof(uint32_t) * 3, vertex_count / 3);
|
|
for (int i = 0; i < vertex_count; i++) {
|
|
embree_triangles[i] = i;
|
|
}
|
|
|
|
if (!p_normals.is_empty()) {
|
|
Vector3 *embree_normals = (Vector3 *)rtcSetNewGeometryBuffer(embree_mesh, RTC_BUFFER_TYPE_VERTEX_ATTRIBUTE, 1, RTC_FORMAT_FLOAT3, sizeof(Vector3), vertex_count);
|
|
memcpy(embree_normals, p_normals.ptr(), sizeof(Vector3) * vertex_count);
|
|
}
|
|
|
|
rtcCommitGeometry(embree_mesh);
|
|
rtcSetGeometryIntersectFilterFunction(embree_mesh, filter_function);
|
|
rtcSetGeometryUserData(embree_mesh, this);
|
|
rtcAttachGeometryByID(embree_scene, embree_mesh, p_id);
|
|
rtcReleaseGeometry(embree_mesh);
|
|
}
|
|
|
|
void LightmapRaycasterEmbree::commit() {
|
|
rtcCommitScene(embree_scene);
|
|
}
|
|
|
|
void LightmapRaycasterEmbree::set_mesh_filter(const RBSet<int> &p_mesh_ids) {
|
|
for (RBSet<int>::Element *E = p_mesh_ids.front(); E; E = E->next()) {
|
|
rtcDisableGeometry(rtcGetGeometry(embree_scene, E->get()));
|
|
}
|
|
rtcCommitScene(embree_scene);
|
|
filter_meshes = p_mesh_ids;
|
|
}
|
|
|
|
void LightmapRaycasterEmbree::clear_mesh_filter() {
|
|
for (RBSet<int>::Element *E = filter_meshes.front(); E; E = E->next()) {
|
|
rtcEnableGeometry(rtcGetGeometry(embree_scene, E->get()));
|
|
}
|
|
rtcCommitScene(embree_scene);
|
|
filter_meshes.clear();
|
|
}
|
|
|
|
void embree_lm_error_handler(void *p_user_data, RTCError p_code, const char *p_str) {
|
|
print_error("Embree error: " + String(p_str));
|
|
}
|
|
|
|
LightmapRaycasterEmbree::LightmapRaycasterEmbree() {
|
|
#ifdef __SSE2__
|
|
_MM_SET_FLUSH_ZERO_MODE(_MM_FLUSH_ZERO_ON);
|
|
_MM_SET_DENORMALS_ZERO_MODE(_MM_DENORMALS_ZERO_ON);
|
|
#endif
|
|
|
|
embree_device = rtcNewDevice(nullptr);
|
|
rtcSetDeviceErrorFunction(embree_device, &embree_lm_error_handler, nullptr);
|
|
embree_scene = rtcNewScene(embree_device);
|
|
}
|
|
|
|
LightmapRaycasterEmbree::~LightmapRaycasterEmbree() {
|
|
if (embree_scene != nullptr) {
|
|
rtcReleaseScene(embree_scene);
|
|
}
|
|
|
|
if (embree_device != nullptr) {
|
|
rtcReleaseDevice(embree_device);
|
|
}
|
|
}
|
|
|
|
#endif
|