1230 lines
39 KiB
C++
1230 lines
39 KiB
C++
/* Copyright (C) 2016 Eric Wasylishen
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
See file, 'COPYING', for details.
|
|
*/
|
|
|
|
#include <light/light.hh>
|
|
#include <light/bounce.hh>
|
|
#include <light/trace_embree.hh>
|
|
#include <light/ltface.hh>
|
|
#include <common/bsputils.hh>
|
|
#include <common/polylib.hh>
|
|
#include <embree3/rtcore.h>
|
|
#include <embree3/rtcore_ray.h>
|
|
#include <vector>
|
|
#include <cassert>
|
|
#include <cstdlib>
|
|
#include <limits>
|
|
|
|
#ifdef _MSC_VER
|
|
#include <malloc.h>
|
|
#endif
|
|
|
|
using namespace std;
|
|
using namespace polylib;
|
|
|
|
class sceneinfo {
|
|
public:
|
|
unsigned geomID;
|
|
|
|
std::vector<const bsp2_dface_t *> triToFace;
|
|
std::vector<const modelinfo_t *> triToModelinfo;
|
|
};
|
|
|
|
class raystream_embree_t;
|
|
|
|
struct ray_source_info {
|
|
RTCIntersectContext embreeCtx;
|
|
|
|
static struct ray_source_info* getRaySourceInfoFromEmbreeCtx(const RTCIntersectContext* ctx) {
|
|
static_assert(std::is_standard_layout<ray_source_info>(), "");
|
|
// standard layout classes allow this conversion because embreeCtx is the first member
|
|
return reinterpret_cast<ray_source_info *>(const_cast<RTCIntersectContext*>(ctx));
|
|
}
|
|
|
|
RTCIntersectContext* castToEmbreeContext() {
|
|
return reinterpret_cast<RTCIntersectContext*>(this);
|
|
}
|
|
|
|
raystream_embree_t *raystream; // may be null if this ray is not from a ray stream
|
|
const modelinfo_t *self;
|
|
|
|
ray_source_info(enum RTCIntersectContextFlags intersectionFlags,
|
|
raystream_embree_t *raystream_,
|
|
const modelinfo_t *self_) :
|
|
raystream(raystream_),
|
|
self(self_) {
|
|
rtcInitIntersectContext(&embreeCtx);
|
|
embreeCtx.flags = intersectionFlags;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Returns 1.0 unless a custom alpha value is set.
|
|
* The priority is: "_light_alpha" (read from extended_texinfo_flags), then "alpha"
|
|
*/
|
|
static float
|
|
Face_Alpha(const modelinfo_t *modelinfo, const bsp2_dface_t *face)
|
|
{
|
|
const uint64_t extended_flags = extended_texinfo_flags[face->texinfo];
|
|
|
|
// for _light_alpha, 0 is considered unset
|
|
const uint64_t alpha_u7 = (extended_flags >> TEX_LIGHT_ALPHA_SHIFT) & 127ULL;
|
|
const float alpha_float = (float)alpha_u7 / (float)127;
|
|
if (alpha_float != 0.0f) {
|
|
return alpha_float;
|
|
}
|
|
|
|
// next check modelinfo alpha (defaults to 1.0)
|
|
return modelinfo->alpha.floatValue();
|
|
}
|
|
|
|
sceneinfo
|
|
CreateGeometry(const mbsp_t *bsp, RTCDevice device, RTCScene scene, const std::vector<const bsp2_dface_t *> &faces)
|
|
{
|
|
// count triangles
|
|
int numtris = 0;
|
|
for (const bsp2_dface_t *face : faces) {
|
|
if (face->numedges < 3)
|
|
continue;
|
|
numtris += (face->numedges - 2);
|
|
}
|
|
|
|
unsigned int geomID;
|
|
RTCGeometry geom_0 = rtcNewGeometry(device, RTC_GEOMETRY_TYPE_TRIANGLE);
|
|
rtcSetGeometryBuildQuality(geom_0,RTC_BUILD_QUALITY_MEDIUM);
|
|
rtcSetGeometryTimeStepCount(geom_0,1);
|
|
geomID = rtcAttachGeometry(scene,geom_0);
|
|
rtcReleaseGeometry(geom_0);
|
|
|
|
struct Vertex { float point[4]; }; //4th element is padding
|
|
struct Triangle { int v0, v1, v2; };
|
|
|
|
// fill in vertices
|
|
Vertex* vertices = (Vertex*) rtcSetNewGeometryBuffer(geom_0,RTC_BUFFER_TYPE_VERTEX,0,RTC_FORMAT_FLOAT3,4*sizeof(float),bsp->numvertexes);
|
|
for (int i=0; i<bsp->numvertexes; i++) {
|
|
const dvertex_t *dvertex = &bsp->dvertexes[i];
|
|
Vertex *vert = &vertices[i];
|
|
for (int j=0; j<3; j++) {
|
|
vert->point[j] = dvertex->point[j];
|
|
}
|
|
}
|
|
|
|
|
|
sceneinfo s;
|
|
s.geomID = geomID;
|
|
|
|
// fill in triangles
|
|
Triangle* triangles = (Triangle*) rtcSetNewGeometryBuffer(geom_0,RTC_BUFFER_TYPE_INDEX,0,RTC_FORMAT_UINT3,3*sizeof(int),numtris);
|
|
int tri_index = 0;
|
|
for (const bsp2_dface_t *face : faces) {
|
|
if (face->numedges < 3)
|
|
continue;
|
|
|
|
const modelinfo_t *modelinfo = ModelInfoForFace(bsp, Face_GetNum(bsp, face));
|
|
|
|
for (int j = 2; j < face->numedges; j++) {
|
|
Triangle *tri = &triangles[tri_index];
|
|
tri->v0 = Face_VertexAtIndex(bsp, face, j-1);
|
|
tri->v1 = Face_VertexAtIndex(bsp, face, j);
|
|
tri->v2 = Face_VertexAtIndex(bsp, face, 0);
|
|
tri_index++;
|
|
|
|
s.triToFace.push_back(face);
|
|
s.triToModelinfo.push_back(modelinfo);
|
|
}
|
|
}
|
|
|
|
|
|
rtcCommitGeometry(geom_0);
|
|
return s;
|
|
}
|
|
|
|
void
|
|
CreateGeometryFromWindings(RTCDevice device, RTCScene scene, const std::vector<winding_t *> &windings)
|
|
{
|
|
if (windings.empty())
|
|
return;
|
|
|
|
// count triangles
|
|
int numtris = 0;
|
|
int numverts = 0;
|
|
for (const auto &winding : windings) {
|
|
Q_assert(winding->numpoints >= 3);
|
|
numtris += (winding->numpoints - 2);
|
|
numverts += winding->numpoints;
|
|
}
|
|
|
|
RTCGeometry geom_1 = rtcNewGeometry(device, RTC_GEOMETRY_TYPE_TRIANGLE);
|
|
rtcSetGeometryBuildQuality(geom_1,RTC_BUILD_QUALITY_MEDIUM);
|
|
rtcSetGeometryTimeStepCount(geom_1,1);
|
|
const unsigned int geomID = rtcAttachGeometry(scene,geom_1);
|
|
rtcReleaseGeometry(geom_1);
|
|
|
|
struct Vertex { float point[4]; }; //4th element is padding
|
|
struct Triangle { int v0, v1, v2; };
|
|
|
|
// fill in vertices
|
|
Vertex* vertices = (Vertex*) rtcSetNewGeometryBuffer(geom_1,RTC_BUFFER_TYPE_VERTEX,0,RTC_FORMAT_FLOAT3,4*sizeof(float),numverts);
|
|
{
|
|
int vert_index = 0;
|
|
for (const auto &winding : windings) {
|
|
for (int j=0; j<winding->numpoints; j++) {
|
|
for (int k=0; k<3; k++) {
|
|
vertices[vert_index + j].point[k] = winding->p[j][k];
|
|
}
|
|
}
|
|
vert_index += winding->numpoints;
|
|
}
|
|
}
|
|
|
|
|
|
// fill in triangles
|
|
Triangle* triangles = (Triangle*) rtcSetNewGeometryBuffer(geom_1,RTC_BUFFER_TYPE_INDEX,0,RTC_FORMAT_UINT3,3*sizeof(int),numtris);
|
|
int tri_index = 0;
|
|
int vert_index = 0;
|
|
for (const auto &winding : windings) {
|
|
for (int j = 2; j < winding->numpoints; j++) {
|
|
Triangle *tri = &triangles[tri_index];
|
|
tri->v0 = vert_index + (j-1);
|
|
tri->v1 = vert_index + j;
|
|
tri->v2 = vert_index + 0;
|
|
tri_index++;
|
|
}
|
|
vert_index += winding->numpoints;
|
|
}
|
|
Q_assert(vert_index == numverts);
|
|
Q_assert(tri_index == numtris);
|
|
|
|
}
|
|
|
|
RTCDevice device;
|
|
RTCScene scene;
|
|
|
|
sceneinfo skygeom; // sky. always occludes.
|
|
sceneinfo solidgeom; // solids. always occludes.
|
|
sceneinfo filtergeom; // conditional occluders.. needs to run ray intersection filter
|
|
|
|
static const mbsp_t *bsp_static;
|
|
|
|
void ErrorCallback(void* userptr, const RTCError code, const char* str)
|
|
{
|
|
printf("RTC Error %d: %s\n", code, str);
|
|
}
|
|
|
|
static const sceneinfo &
|
|
Embree_SceneinfoForGeomID(unsigned int geomID)
|
|
{
|
|
if (geomID == skygeom.geomID) {
|
|
return skygeom;
|
|
} else if (geomID == solidgeom.geomID) {
|
|
return solidgeom;
|
|
} else if (geomID == filtergeom.geomID) {
|
|
return filtergeom;
|
|
} else {
|
|
Error("unexpected geomID");
|
|
throw; //mxd. Added to silence compiler warning
|
|
}
|
|
}
|
|
|
|
const bsp2_dface_t *Embree_LookupFace(unsigned int geomID, unsigned int primID)
|
|
{
|
|
const sceneinfo &info = Embree_SceneinfoForGeomID(geomID);
|
|
return info.triToFace.at(primID);
|
|
}
|
|
|
|
const modelinfo_t *Embree_LookupModelinfo(unsigned int geomID, unsigned int primID)
|
|
{
|
|
const sceneinfo &info = Embree_SceneinfoForGeomID(geomID);
|
|
return info.triToModelinfo.at(primID);
|
|
}
|
|
|
|
static void
|
|
Embree_RayEndpoint(struct RTCRayN* ray, const struct RTCHitN* potentialHit, size_t N, size_t i, vec3_t endpoint)
|
|
{
|
|
vec3_t dir;
|
|
dir[0] = RTCRayN_dir_x(ray, N, i);
|
|
dir[1] = RTCRayN_dir_y(ray, N, i);
|
|
dir[2] = RTCRayN_dir_z(ray, N, i);
|
|
|
|
VectorNormalize(dir);
|
|
|
|
vec3_t org;
|
|
org[0] = RTCRayN_org_x(ray, N, i);
|
|
org[1] = RTCRayN_org_y(ray, N, i);
|
|
org[2] = RTCRayN_org_z(ray, N, i);
|
|
|
|
// N.B.: we want the distance to the potential hit
|
|
float tfar = RTCRayN_tfar(ray, N, i);
|
|
|
|
VectorMA(org, tfar, dir, endpoint);
|
|
}
|
|
|
|
enum class filtertype_t {
|
|
INTERSECTION, OCCLUSION
|
|
};
|
|
|
|
void AddGlassToRay(const RTCIntersectContext* context, unsigned rayIndex, float opacity, const vec3_t glasscolor);
|
|
|
|
void AddDynamicOccluderToRay(const RTCIntersectContext* context, unsigned rayIndex, int style);
|
|
|
|
// called to evaluate transparency
|
|
template<filtertype_t filtertype>
|
|
static void
|
|
Embree_FilterFuncN(const struct RTCFilterFunctionNArguments* args)
|
|
{
|
|
// unpack arguments
|
|
int* valid = args->valid;
|
|
void* userDataPtr = args->geometryUserPtr;
|
|
const struct RTCIntersectContext* context = args->context;
|
|
struct RTCRayN* ray = args->ray;
|
|
struct RTCHitN* potentialHit = args->hit;
|
|
const size_t N = args->N;
|
|
|
|
const int VALID = -1;
|
|
const int INVALID = 0;
|
|
|
|
const ray_source_info *rsi = ray_source_info::getRaySourceInfoFromEmbreeCtx(context);
|
|
|
|
for (size_t i=0; i<N; i++) {
|
|
if (valid[i] != VALID) {
|
|
// we only need to handle valid rays
|
|
continue;
|
|
}
|
|
|
|
const unsigned &mask = RTCRayN_mask(ray, N, i);
|
|
const unsigned &geomID = RTCHitN_geomID(potentialHit, N, i);
|
|
const unsigned &primID = RTCHitN_primID(potentialHit, N, i);
|
|
|
|
// unpack ray index
|
|
const unsigned rayIndex = mask;
|
|
|
|
const modelinfo_t *source_modelinfo = rsi->self;
|
|
const modelinfo_t *hit_modelinfo = Embree_LookupModelinfo(geomID, primID);
|
|
Q_assert(hit_modelinfo != nullptr);
|
|
|
|
if (hit_modelinfo->shadowworldonly.boolValue()) {
|
|
// we hit "_shadowworldonly" "1" geometry. Ignore the hit unless we are from world.
|
|
if (!source_modelinfo || !source_modelinfo->isWorld()) {
|
|
// reject hit
|
|
valid[i] = INVALID;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (hit_modelinfo->shadowself.boolValue()) {
|
|
// only casts shadows on itself
|
|
if (source_modelinfo != hit_modelinfo) {
|
|
// reject hit
|
|
valid[i] = INVALID;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (hit_modelinfo->switchableshadow.boolValue()) {
|
|
// we hit a dynamic shadow caster. reject the hit, but store the
|
|
// info about what we hit.
|
|
|
|
const int style = hit_modelinfo->switchshadstyle.intValue();
|
|
|
|
AddDynamicOccluderToRay(context, rayIndex, style);
|
|
|
|
// reject hit
|
|
valid[i] = INVALID;
|
|
continue;
|
|
}
|
|
|
|
// test fence textures and glass
|
|
const bsp2_dface_t *face = Embree_LookupFace(geomID, primID);
|
|
float alpha = Face_Alpha(hit_modelinfo, face);
|
|
|
|
//mxd
|
|
bool isFence, isGlass;
|
|
if(bsp_static->loadversion == Q2_BSPVERSION) {
|
|
const int contents = Face_Contents(bsp_static, face);
|
|
isFence = ((contents & Q2_SURF_TRANSLUCENT) == Q2_SURF_TRANSLUCENT); // KMQuake 2-specific. Use texture alpha chanel when both flags are set.
|
|
isGlass = !isFence && (contents & Q2_SURF_TRANSLUCENT);
|
|
if(isGlass)
|
|
alpha = (contents & Q2_SURF_TRANS33 ? 0.66f : 0.33f);
|
|
} else {
|
|
const char *name = Face_TextureName(bsp_static, face);
|
|
isFence = (name[0] == '{');
|
|
isGlass = (alpha < 1.0f);
|
|
}
|
|
|
|
if (isFence || isGlass) {
|
|
vec3_t hitpoint;
|
|
Embree_RayEndpoint(ray, potentialHit, N, i, hitpoint);
|
|
const color_rgba sample = SampleTexture(face, bsp_static, hitpoint); //mxd. Palette index -> color_rgba
|
|
|
|
if (isGlass) {
|
|
// hit glass...
|
|
|
|
//mxd. Adjust alpha by texture alpha?
|
|
if (sample.a < 255)
|
|
alpha = sample.a / 255.0f;
|
|
|
|
vec3_t rayDir = {
|
|
RTCRayN_dir_x(ray, N, i),
|
|
RTCRayN_dir_y(ray, N, i),
|
|
RTCRayN_dir_z(ray, N, i)
|
|
};
|
|
vec3_t potentialHitGeometryNormal = {
|
|
RTCHitN_Ng_x(potentialHit, N, i),
|
|
RTCHitN_Ng_y(potentialHit, N, i),
|
|
RTCHitN_Ng_z(potentialHit, N, i)
|
|
};
|
|
|
|
VectorNormalize(rayDir);
|
|
VectorNormalize(potentialHitGeometryNormal);
|
|
|
|
const vec_t raySurfaceCosAngle = DotProduct(rayDir, potentialHitGeometryNormal);
|
|
|
|
// only pick up the color of the glass on the _exiting_ side of the glass.
|
|
// (we currently trace "backwards", from surface point --> light source)
|
|
if (raySurfaceCosAngle < 0) {
|
|
vec3_t samplecolor { (float)sample.r, (float)sample.g, (float)sample.b };
|
|
VectorScale(samplecolor, 1/255.0f, samplecolor);
|
|
|
|
AddGlassToRay(context, rayIndex, alpha, samplecolor);
|
|
}
|
|
|
|
// reject hit
|
|
valid[i] = INVALID;
|
|
continue;
|
|
}
|
|
|
|
if (isFence) {
|
|
if (sample.a < 255) {
|
|
// reject hit
|
|
valid[i] = INVALID;
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
// accept hit (do nothing)
|
|
}
|
|
}
|
|
|
|
// building faces for skip-textured bmodels
|
|
|
|
#if 0
|
|
|
|
static FILE *
|
|
InitObjFile(const char *filename)
|
|
{
|
|
FILE *objfile;
|
|
char objfilename[1024];
|
|
strcpy(objfilename, filename);
|
|
StripExtension(objfilename);
|
|
DefaultExtension(objfilename, ".obj");
|
|
|
|
objfile = fopen(objfilename, "wt");
|
|
if (!objfile)
|
|
Error("Failed to open %s: %s", objfilename, strerror(errno));
|
|
|
|
return objfile;
|
|
}
|
|
|
|
static void
|
|
ExportObjFace(FILE *f, const winding_t *winding, int *vertcount)
|
|
{
|
|
// plane_t plane;
|
|
// WindingPlane(winding, plane.normal, &plane.dist);
|
|
|
|
// export the vertices and uvs
|
|
for (int i=0; i<winding->numpoints; i++)
|
|
{
|
|
fprintf(f, "v %.9g %.9g %.9g\n", winding->p[i][0], winding->p[i][1], winding->p[i][2]);
|
|
// fprintf(f, "vn %.9g %.9g %.9g\n", plane.normal[0], plane.normal[1], plane.normal[2]);
|
|
}
|
|
|
|
fprintf(f, "f");
|
|
for (int i=0; i<winding->numpoints; i++) {
|
|
// .obj vertexes start from 1
|
|
// .obj faces are CCW, quake is CW, so reverse the order
|
|
const int vertindex = *vertcount + (winding->numpoints - 1 - i) + 1;
|
|
fprintf(f, " %d//%d", vertindex, vertindex);
|
|
}
|
|
fprintf(f, "\n");
|
|
|
|
*vertcount += winding->numpoints;
|
|
}
|
|
|
|
static void
|
|
ExportObj(const char *filename, const vector<winding_t *> &windings)
|
|
{
|
|
FILE *objfile = InitObjFile(filename);
|
|
int vertcount = 0;
|
|
|
|
for (const auto &winding : windings) {
|
|
ExportObjFace(objfile, winding, &vertcount);
|
|
}
|
|
|
|
fclose(objfile);
|
|
}
|
|
|
|
#endif
|
|
|
|
plane_t Node_Plane(const mbsp_t *bsp, const bsp2_dnode_t *node, bool side)
|
|
{
|
|
const dplane_t *dplane = &bsp->dplanes[node->planenum];
|
|
plane_t plane;
|
|
|
|
VectorCopy(dplane->normal, plane.normal);
|
|
plane.dist = dplane->dist;
|
|
|
|
if (side) {
|
|
VectorScale(plane.normal, -1, plane.normal);
|
|
plane.dist *= -1.0f;
|
|
}
|
|
|
|
return plane;
|
|
}
|
|
|
|
/**
|
|
* `planes` all of the node planes that bound this leaf, facing inward.
|
|
*/
|
|
std::vector<winding_t *>
|
|
Leaf_MakeFaces(const mbsp_t *bsp, const mleaf_t *leaf, const std::vector<plane_t> &planes)
|
|
{
|
|
std::vector<winding_t *> result;
|
|
|
|
for (const plane_t &plane : planes) {
|
|
// flip the inward-facing split plane to get the outward-facing plane of the face we're constructing
|
|
plane_t faceplane;
|
|
VectorScale(plane.normal, -1, faceplane.normal);
|
|
faceplane.dist = -plane.dist;
|
|
|
|
winding_t *winding = BaseWindingForPlane(faceplane.normal, faceplane.dist);
|
|
|
|
// clip `winding` by all of the other planes
|
|
for (const plane_t &plane2 : planes) {
|
|
if (&plane2 == &plane)
|
|
continue;
|
|
|
|
winding_t *front = nullptr;
|
|
winding_t *back = nullptr;
|
|
|
|
// frees winding.
|
|
ClipWinding(winding, plane2.normal, plane2.dist, &front, &back);
|
|
|
|
// discard the back, continue clipping the front part
|
|
free(back);
|
|
winding = front;
|
|
|
|
// check if everything was clipped away
|
|
if (winding == nullptr)
|
|
break;
|
|
}
|
|
|
|
if (winding == nullptr) {
|
|
//logprint("WARNING: winding clipped away\n");
|
|
} else {
|
|
result.push_back(winding);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
void FreeWindings(std::vector<winding_t *> &windings)
|
|
{
|
|
for (winding_t *winding : windings) {
|
|
free(winding);
|
|
}
|
|
windings.clear();
|
|
}
|
|
|
|
void
|
|
MakeFaces_r(const mbsp_t *bsp, const int nodenum, std::vector<plane_t> *planes, std::vector<winding_t *> *result)
|
|
{
|
|
if (nodenum < 0) {
|
|
const int leafnum = -nodenum - 1;
|
|
const mleaf_t *leaf = &bsp->dleafs[leafnum];
|
|
|
|
if (bsp->loadversion == Q2_BSPVERSION ? leaf->contents & Q2_CONTENTS_SOLID : leaf->contents == CONTENTS_SOLID) {
|
|
std::vector<winding_t *> leaf_windings = Leaf_MakeFaces(bsp, leaf, *planes);
|
|
for (winding_t *w : leaf_windings) {
|
|
result->push_back(w);
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
const bsp2_dnode_t *node = &bsp->dnodes[nodenum];
|
|
|
|
// go down the front side
|
|
const plane_t front = Node_Plane(bsp, node, false);
|
|
planes->push_back(front);
|
|
MakeFaces_r(bsp, node->children[0], planes, result);
|
|
planes->pop_back();
|
|
|
|
// go down the back side
|
|
const plane_t back = Node_Plane(bsp, node, true);
|
|
planes->push_back(back);
|
|
MakeFaces_r(bsp, node->children[1], planes, result);
|
|
planes->pop_back();
|
|
}
|
|
|
|
std::vector<winding_t *>
|
|
MakeFaces(const mbsp_t *bsp, const dmodel_t *model)
|
|
{
|
|
std::vector<winding_t *> result;
|
|
std::vector<plane_t> planes;
|
|
MakeFaces_r(bsp, model->headnode[0], &planes, &result);
|
|
Q_assert(planes.empty());
|
|
|
|
return result;
|
|
}
|
|
|
|
void
|
|
Embree_TraceInit(const mbsp_t *bsp)
|
|
{
|
|
bsp_static = bsp;
|
|
Q_assert(device == nullptr);
|
|
|
|
std::vector<const bsp2_dface_t *> skyfaces, solidfaces, filterfaces;
|
|
|
|
// check all modelinfos
|
|
for (int mi = 0; mi<bsp->nummodels; mi++) {
|
|
const modelinfo_t *model = ModelInfoForModel(bsp, mi);
|
|
|
|
const bool isWorld = model->isWorld();
|
|
const bool shadow = model->shadow.boolValue();
|
|
const bool shadowself = model->shadowself.boolValue();
|
|
const bool shadowworldonly = model->shadowworldonly.boolValue();
|
|
const bool switchableshadow = model->switchableshadow.boolValue();
|
|
|
|
if (!(isWorld || shadow || shadowself || shadowworldonly || switchableshadow))
|
|
continue;
|
|
|
|
for (int i=0; i<model->model->numfaces; i++) {
|
|
const bsp2_dface_t *face = BSP_GetFace(bsp, model->model->firstface + i);
|
|
|
|
// check for TEX_NOSHADOW
|
|
const uint64_t extended_flags = extended_texinfo_flags[face->texinfo];
|
|
if (extended_flags & TEX_NOSHADOW)
|
|
continue;
|
|
|
|
// handle switchableshadow
|
|
if (switchableshadow) {
|
|
filterfaces.push_back(face);
|
|
continue;
|
|
}
|
|
|
|
const int contents = Face_Contents(bsp, face); //mxd
|
|
|
|
//mxd. Skip NODRAW faces, but not SKY ones (Q2's sky01.wal has both flags set)
|
|
if(bsp->loadversion == Q2_BSPVERSION && (contents & Q2_SURF_NODRAW) && !(contents & Q2_SURF_SKY))
|
|
continue;
|
|
|
|
// handle glass / water
|
|
const float alpha = Face_Alpha(model, face);
|
|
if (alpha < 1.0f
|
|
|| (bsp->loadversion == Q2_BSPVERSION && (contents & Q2_SURF_TRANSLUCENT))) { //mxd. Both fence and transparent textures are done using SURF_TRANS flags in Q2
|
|
filterfaces.push_back(face);
|
|
continue;
|
|
}
|
|
|
|
// fence
|
|
const char *texname = Face_TextureName(bsp, face);
|
|
if (texname[0] == '{') {
|
|
filterfaces.push_back(face);
|
|
continue;
|
|
}
|
|
|
|
// handle sky
|
|
if (/* !Q_strncasecmp("sky", texname, 3) */ bsp->loadversion == Q2_BSPVERSION ? contents & Q2_SURF_SKY : contents == CONTENTS_SKY) { //mxd
|
|
skyfaces.push_back(face);
|
|
continue;
|
|
}
|
|
|
|
// liquids
|
|
if (/* texname[0] == '*' */ Contents_IsTranslucent(bsp, contents)) { //mxd
|
|
if (!isWorld) {
|
|
// world liquids never cast shadows; shadow casting bmodel liquids do
|
|
solidfaces.push_back(face);
|
|
}
|
|
continue;
|
|
}
|
|
|
|
// solid faces
|
|
|
|
if (isWorld || shadow){
|
|
solidfaces.push_back(face);
|
|
} else {
|
|
// shadowself or shadowworldonly
|
|
Q_assert(shadowself || shadowworldonly);
|
|
filterfaces.push_back(face);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Special handling of skip-textured bmodels */
|
|
std::vector<winding_t *> skipwindings;
|
|
for (const modelinfo_t *model : tracelist) {
|
|
if (model->model->numfaces == 0) {
|
|
std::vector<winding_t *> windings = MakeFaces(bsp, model->model);
|
|
for (auto &w : windings) {
|
|
skipwindings.push_back(w);
|
|
}
|
|
}
|
|
}
|
|
|
|
device = rtcNewDevice (NULL);
|
|
rtcSetDeviceErrorFunction(device,ErrorCallback,nullptr); //mxd. Changed from rtcDeviceSetErrorFunction to silence compiler warning...
|
|
|
|
// log version
|
|
const size_t ver_maj = rtcGetDeviceProperty (device,RTC_DEVICE_PROPERTY_VERSION_MAJOR);
|
|
const size_t ver_min = rtcGetDeviceProperty (device,RTC_DEVICE_PROPERTY_VERSION_MINOR);
|
|
const size_t ver_pat = rtcGetDeviceProperty (device,RTC_DEVICE_PROPERTY_VERSION_PATCH);
|
|
logprint("Embree_TraceInit: Embree version: %d.%d.%d\n",
|
|
static_cast<int>(ver_maj), static_cast<int>(ver_min), static_cast<int>(ver_pat));
|
|
|
|
// we use the ray mask field to store the dmodel index of the self-shadow model
|
|
if (0 != rtcGetDeviceProperty (device,RTC_DEVICE_PROPERTY_RAY_MASK_SUPPORTED)) {
|
|
Error("embree must be built with ray masks disabled");
|
|
}
|
|
|
|
scene = rtcNewScene(device);
|
|
rtcSetSceneFlags(scene, RTC_SCENE_FLAG_NONE);
|
|
rtcSetSceneBuildQuality(scene, RTC_BUILD_QUALITY_MEDIUM);
|
|
skygeom = CreateGeometry(bsp, device, scene, skyfaces);
|
|
solidgeom = CreateGeometry(bsp, device, scene, solidfaces);
|
|
filtergeom = CreateGeometry(bsp, device, scene, filterfaces);
|
|
CreateGeometryFromWindings(device, scene, skipwindings);
|
|
|
|
rtcSetGeometryIntersectFilterFunction(rtcGetGeometry(scene,filtergeom.geomID),Embree_FilterFuncN<filtertype_t::INTERSECTION>);
|
|
rtcSetGeometryOccludedFilterFunction(rtcGetGeometry(scene,filtergeom.geomID),Embree_FilterFuncN<filtertype_t::OCCLUSION>);
|
|
|
|
rtcCommitScene(scene);
|
|
|
|
logprint("Embree_TraceInit:\n");
|
|
logprint("\t%d sky faces\n", (int)skyfaces.size());
|
|
logprint("\t%d solid faces\n", (int)solidfaces.size());
|
|
logprint("\t%d filtered faces\n", (int)filterfaces.size());
|
|
logprint("\t%d shadow-casting skip faces\n", (int)skipwindings.size());
|
|
|
|
FreeWindings(skipwindings);
|
|
}
|
|
|
|
static RTCRay SetupOcclusionRay(unsigned rayindex, const vec3_t start, const vec3_t dir, vec_t dist)
|
|
{
|
|
RTCRay ray;
|
|
ray.flags = 0;
|
|
ray.org_x = start[0];
|
|
ray.org_y = start[1];
|
|
ray.org_z = start[2];
|
|
ray.dir_x = dir[0]; // can be un-normalized
|
|
ray.dir_y = dir[1]; // can be un-normalized
|
|
ray.dir_z = dir[2]; // can be un-normalized
|
|
ray.tnear = 0.f;
|
|
ray.tfar = dist;
|
|
ray.id = 0;
|
|
ray.flags = 0;
|
|
|
|
// NOTE: we are not using the ray masking feature of embree, but just using
|
|
// this field to store the ray index
|
|
ray.mask = rayindex;
|
|
|
|
ray.time = 0.f;
|
|
return ray;
|
|
}
|
|
|
|
static RTCRayHit SetupIntersectionRay(unsigned rayindex, const vec3_t start, const vec3_t dir, vec_t dist)
|
|
{
|
|
RTCRayHit rayhit;
|
|
rayhit.ray = SetupOcclusionRay(rayindex, start, dir, dist);
|
|
rayhit.hit.geomID = RTC_INVALID_GEOMETRY_ID;
|
|
return rayhit;
|
|
}
|
|
|
|
static RTCRay SetupRay_StartStop(const vec3_t start, const vec3_t stop)
|
|
{
|
|
vec3_t dir;
|
|
VectorSubtract(stop, start, dir);
|
|
vec_t dist = VectorNormalize(dir);
|
|
|
|
return SetupOcclusionRay(0, start, dir, dist);
|
|
}
|
|
|
|
//public
|
|
qboolean Embree_TestLight(const vec3_t start, const vec3_t stop, const modelinfo_t *self)
|
|
{
|
|
RTCRay ray = SetupRay_StartStop(start, stop);
|
|
|
|
ray_source_info ctx2(RTC_INTERSECT_CONTEXT_FLAG_COHERENT, nullptr, self);
|
|
rtcOccluded1(scene, ctx2.castToEmbreeContext(), &ray);
|
|
|
|
// from embree2 to 3 migration:
|
|
const bool occluded = ray.tfar < 0.0f;
|
|
|
|
if (occluded)
|
|
return false; //hit
|
|
|
|
// no obstruction
|
|
return true;
|
|
}
|
|
|
|
//public
|
|
qboolean Embree_TestSky(const vec3_t start, const vec3_t dirn, const modelinfo_t *self, const bsp2_dface_t **face_out)
|
|
{
|
|
// trace from the sample point towards the sun, and
|
|
// return true if we hit a sky poly.
|
|
|
|
vec3_t dir_normalized;
|
|
VectorCopy(dirn, dir_normalized);
|
|
VectorNormalize(dir_normalized);
|
|
|
|
RTCRayHit ray = SetupIntersectionRay(0, start, dir_normalized, MAX_SKY_DIST);
|
|
|
|
ray_source_info ctx2(RTC_INTERSECT_CONTEXT_FLAG_COHERENT, nullptr, self);
|
|
rtcIntersect1(scene,ctx2.castToEmbreeContext(),&ray);
|
|
ray.hit.Ng_x = -ray.hit.Ng_x;
|
|
ray.hit.Ng_y = -ray.hit.Ng_y;
|
|
ray.hit.Ng_z = -ray.hit.Ng_z;
|
|
|
|
qboolean hit_sky = (ray.hit.geomID == skygeom.geomID);
|
|
|
|
if (face_out) {
|
|
if (hit_sky) {
|
|
const sceneinfo &si = Embree_SceneinfoForGeomID(ray.hit.geomID);
|
|
*face_out = si.triToFace.at(ray.hit.primID);
|
|
} else {
|
|
*face_out = nullptr;
|
|
}
|
|
}
|
|
|
|
return hit_sky;
|
|
}
|
|
|
|
//public
|
|
hittype_t Embree_DirtTrace(const vec3_t start, const vec3_t dirn, vec_t dist, const modelinfo_t *self, vec_t *hitdist_out, plane_t *hitplane_out, const bsp2_dface_t **face_out)
|
|
{
|
|
RTCRayHit ray = SetupIntersectionRay(0, start, dirn, dist);
|
|
ray_source_info ctx2(RTC_INTERSECT_CONTEXT_FLAG_COHERENT, nullptr, self);
|
|
rtcIntersect1(scene,ctx2.castToEmbreeContext(),&ray);
|
|
ray.hit.Ng_x = -ray.hit.Ng_x;
|
|
ray.hit.Ng_y = -ray.hit.Ng_y;
|
|
ray.hit.Ng_z = -ray.hit.Ng_z;
|
|
|
|
if (ray.hit.geomID == RTC_INVALID_GEOMETRY_ID)
|
|
return hittype_t::NONE;
|
|
|
|
if (hitdist_out) {
|
|
*hitdist_out = ray.ray.tfar;
|
|
}
|
|
if (hitplane_out) {
|
|
hitplane_out->normal[0] = ray.hit.Ng_x;
|
|
hitplane_out->normal[1] = ray.hit.Ng_y;
|
|
hitplane_out->normal[2] = ray.hit.Ng_z;
|
|
VectorNormalize(hitplane_out->normal);
|
|
|
|
vec3_t hitpoint;
|
|
VectorMA(start, ray.ray.tfar, dirn, hitpoint);
|
|
|
|
hitplane_out->dist = DotProduct(hitplane_out->normal, hitpoint);
|
|
}
|
|
if (face_out) {
|
|
const sceneinfo &si = Embree_SceneinfoForGeomID(ray.hit.geomID);
|
|
*face_out = si.triToFace.at(ray.hit.primID);
|
|
}
|
|
|
|
if (ray.geomID == skygeom.geomID) {
|
|
return hittype_t::SKY;
|
|
} else {
|
|
return hittype_t::SOLID;
|
|
}
|
|
}
|
|
|
|
//enum class streamstate_t {
|
|
// READY, DID_OCCLUDE, DID_INTERSECT
|
|
//};
|
|
|
|
static void *q_aligned_malloc(size_t align, size_t size)
|
|
{
|
|
#ifdef _MSC_VER
|
|
return _aligned_malloc(size, align);
|
|
#else
|
|
void *ptr;
|
|
if (0 != posix_memalign(&ptr, align, size)) {
|
|
return nullptr;
|
|
}
|
|
return ptr;
|
|
#endif
|
|
}
|
|
|
|
static void q_aligned_free(void *ptr)
|
|
{
|
|
#ifdef _MSC_VER
|
|
_aligned_free(ptr);
|
|
#else
|
|
free(ptr);
|
|
#endif
|
|
}
|
|
|
|
class occlusion_raystream_embree_t {
|
|
public:
|
|
RTCRay *_occlusion_rays;
|
|
float *_rays_maxdist;
|
|
int *_point_indices;
|
|
vec3_t *_ray_colors;
|
|
vec3_t *_ray_normalcontribs;
|
|
|
|
// This is set to the modelinfo's switchshadstyle if the ray hit
|
|
// a dynamic shadow caster. (note that for rays that hit dynamic
|
|
// shadow casters, all of the other hit data is assuming the ray went
|
|
// straight through).
|
|
int *_ray_dynamic_styles;
|
|
|
|
int _numrays;
|
|
int _maxrays;
|
|
|
|
public:
|
|
raystream_embree_t(int maxRays) :
|
|
_occlusion_rays { static_cast<RTCRay *>(q_aligned_malloc(16, sizeof(RTCRay) * maxRays)) },
|
|
_rays_maxdist { new float[maxRays] },
|
|
_point_indices { new int[maxRays] },
|
|
_ray_colors { static_cast<vec3_t *>(calloc(maxRays, sizeof(vec3_t))) },
|
|
_ray_normalcontribs { static_cast<vec3_t *>(calloc(maxRays, sizeof(vec3_t))) },
|
|
_ray_dynamic_styles { new int[maxRays] },
|
|
_numrays { 0 },
|
|
_maxrays { maxRays } {}
|
|
|
|
~raystream_embree_t() {
|
|
q_aligned_free(_intersection_rays);
|
|
q_aligned_free(_occlusion_rays);
|
|
delete[] _rays_maxdist;
|
|
delete[] _point_indices;
|
|
free(_ray_colors);
|
|
free(_ray_normalcontribs);
|
|
delete[] _ray_dynamic_styles;
|
|
}
|
|
|
|
virtual void pushRay(RayType type, int i, const vec_t *origin, const vec3_t dir, float dist, const vec_t *color = nullptr, const vec_t *normalcontrib = nullptr) {
|
|
Q_assert(_numrays<_maxrays);
|
|
_rays[_numrays] = SetupRay(_numrays, origin, dir, dist);
|
|
_rays_maxdist[_numrays] = dist;
|
|
_point_indices[_numrays] = i;
|
|
if (color) {
|
|
VectorCopy(color, _ray_colors[_numrays]);
|
|
}
|
|
if (normalcontrib) {
|
|
VectorCopy(normalcontrib, _ray_normalcontribs[_numrays]);
|
|
}
|
|
_ray_dynamic_styles[_numrays] = 0;
|
|
_numrays++;
|
|
}
|
|
|
|
virtual size_t numPushedRays() {
|
|
return _numrays;
|
|
}
|
|
|
|
virtual void tracePushedRaysOcclusion(const modelinfo_t *self) {
|
|
//Q_assert(_state == streamstate_t::READY);
|
|
|
|
if (!_numrays)
|
|
return;
|
|
|
|
ray_source_info ctx2(RTC_INTERSECT_CONTEXT_FLAG_COHERENT, this, self);
|
|
rtcOccluded1M(scene, ctx2.castToEmbreeContext(), _rays, _numrays, sizeof(RTCRay));
|
|
}
|
|
|
|
virtual void tracePushedRaysIntersection(const modelinfo_t *self) {
|
|
if (!_numrays)
|
|
return;
|
|
|
|
ray_source_info ctx2(RTC_INTERSECT_CONTEXT_FLAG_COHERENT, this, self);
|
|
rtcIntersect1M(scene, ctx2.castToEmbreeContext(), _rays, _numrays, sizeof(RTCRay));
|
|
}
|
|
|
|
virtual bool getPushedRayOccluded(size_t j) {
|
|
Q_assert(j < _maxrays);
|
|
return ray.tfar < 0.0f;
|
|
}
|
|
|
|
virtual float getPushedRayDist(size_t j) {
|
|
Q_assert(j < _maxrays);
|
|
return _rays_maxdist[j];
|
|
}
|
|
|
|
virtual float getPushedRayHitDist(size_t j) {
|
|
Q_assert(j < _maxrays);
|
|
return _rays[j].tfar;
|
|
}
|
|
|
|
virtual hittype_t getPushedRayHitType(size_t j) {
|
|
Q_assert(j < _maxrays);
|
|
|
|
if (_rays[j].geomID == RTC_INVALID_GEOMETRY_ID) {
|
|
return hittype_t::NONE;
|
|
} else if (_rays[j].geomID == skygeom.geomID) {
|
|
return hittype_t::SKY;
|
|
} else {
|
|
return hittype_t::SOLID;
|
|
}
|
|
}
|
|
|
|
virtual const bsp2_dface_t *getPushedRayHitFace(size_t j) {
|
|
Q_assert(j < _maxrays);
|
|
|
|
const RTCRay &ray = _rays[j];
|
|
|
|
if (ray.geomID == RTC_INVALID_GEOMETRY_ID)
|
|
return nullptr;
|
|
|
|
const sceneinfo &si = Embree_SceneinfoForGeomID(ray.geomID);
|
|
const bsp2_dface_t *face = si.triToFace.at(ray.primID);
|
|
Q_assert(face != nullptr);
|
|
|
|
return face;
|
|
}
|
|
|
|
virtual void getPushedRayDir(size_t j, vec3_t out) {
|
|
Q_assert(j < _maxrays);
|
|
for (int i=0; i<3; i++) {
|
|
out[i] = _rays[j].dir[i];
|
|
}
|
|
}
|
|
|
|
virtual int getPushedRayPointIndex(size_t j) {
|
|
// Q_assert(_state != streamstate_t::READY);
|
|
Q_assert(j < _maxrays);
|
|
return _point_indices[j];
|
|
}
|
|
|
|
virtual void getPushedRayColor(size_t j, vec3_t out) {
|
|
Q_assert(j < _maxrays);
|
|
VectorCopy(_ray_colors[j], out);
|
|
}
|
|
|
|
virtual void getPushedRayNormalContrib(size_t j, vec3_t out) {
|
|
Q_assert(j < _maxrays);
|
|
VectorCopy(_ray_normalcontribs[j], out);
|
|
}
|
|
|
|
virtual int getPushedRayDynamicStyle(size_t j) {
|
|
Q_assert(j < _maxrays);
|
|
return _ray_dynamic_styles[j];
|
|
}
|
|
|
|
void clearPushedRays() {
|
|
_numrays = 0;
|
|
}
|
|
};
|
|
|
|
class raystream_embree_t : public raystream_t {
|
|
public:
|
|
RTCRayHit *_intersection_rays;
|
|
RTCRay *_occlusion_rays;
|
|
float *_rays_maxdist;
|
|
int *_point_indices;
|
|
vec3_t *_ray_colors;
|
|
vec3_t *_ray_normalcontribs;
|
|
|
|
// This is set to the modelinfo's switchshadstyle if the ray hit
|
|
// a dynamic shadow caster. (note that for rays that hit dynamic
|
|
// shadow casters, all of the other hit data is assuming the ray went
|
|
// straight through).
|
|
int *_ray_dynamic_styles;
|
|
|
|
int _numrays;
|
|
int _maxrays;
|
|
|
|
public:
|
|
raystream_embree_t(int maxRays) :
|
|
_intersection_rays { static_cast<RTCRayHit *>(q_aligned_malloc(16, sizeof(RTCRayHit) * maxRays)) },
|
|
_occlusion_rays { static_cast<RTCRay *>(q_aligned_malloc(16, sizeof(RTCRay) * maxRays)) },
|
|
_rays_maxdist { new float[maxRays] },
|
|
_point_indices { new int[maxRays] },
|
|
_ray_colors { static_cast<vec3_t *>(calloc(maxRays, sizeof(vec3_t))) },
|
|
_ray_normalcontribs { static_cast<vec3_t *>(calloc(maxRays, sizeof(vec3_t))) },
|
|
_ray_dynamic_styles { new int[maxRays] },
|
|
_numrays { 0 },
|
|
_maxrays { maxRays } {}
|
|
|
|
~raystream_embree_t() {
|
|
q_aligned_free(_intersection_rays);
|
|
q_aligned_free(_occlusion_rays);
|
|
delete[] _rays_maxdist;
|
|
delete[] _point_indices;
|
|
free(_ray_colors);
|
|
free(_ray_normalcontribs);
|
|
delete[] _ray_dynamic_styles;
|
|
}
|
|
|
|
virtual void pushRay(RayType type, int i, const vec_t *origin, const vec3_t dir, float dist, const vec_t *color = nullptr, const vec_t *normalcontrib = nullptr) {
|
|
Q_assert(_numrays<_maxrays);
|
|
_rays[_numrays] = SetupRay(_numrays, origin, dir, dist);
|
|
_rays_maxdist[_numrays] = dist;
|
|
_point_indices[_numrays] = i;
|
|
if (color) {
|
|
VectorCopy(color, _ray_colors[_numrays]);
|
|
}
|
|
if (normalcontrib) {
|
|
VectorCopy(normalcontrib, _ray_normalcontribs[_numrays]);
|
|
}
|
|
_ray_dynamic_styles[_numrays] = 0;
|
|
_numrays++;
|
|
}
|
|
|
|
virtual size_t numPushedRays() {
|
|
return _numrays;
|
|
}
|
|
|
|
virtual void tracePushedRaysOcclusion(const modelinfo_t *self) {
|
|
//Q_assert(_state == streamstate_t::READY);
|
|
|
|
if (!_numrays)
|
|
return;
|
|
|
|
ray_source_info ctx2(RTC_INTERSECT_CONTEXT_FLAG_COHERENT, this, self);
|
|
rtcOccluded1M(scene, ctx2.castToEmbreeContext(), _rays, _numrays, sizeof(RTCRay));
|
|
}
|
|
|
|
virtual void tracePushedRaysIntersection(const modelinfo_t *self) {
|
|
if (!_numrays)
|
|
return;
|
|
|
|
ray_source_info ctx2(RTC_INTERSECT_CONTEXT_FLAG_COHERENT, this, self);
|
|
rtcIntersect1M(scene, ctx2.castToEmbreeContext(), _rays, _numrays, sizeof(RTCRay));
|
|
}
|
|
|
|
virtual bool getPushedRayOccluded(size_t j) {
|
|
Q_assert(j < _maxrays);
|
|
return ray.tfar < 0.0f;
|
|
}
|
|
|
|
virtual float getPushedRayDist(size_t j) {
|
|
Q_assert(j < _maxrays);
|
|
return _rays_maxdist[j];
|
|
}
|
|
|
|
virtual float getPushedRayHitDist(size_t j) {
|
|
Q_assert(j < _maxrays);
|
|
return _rays[j].tfar;
|
|
}
|
|
|
|
virtual hittype_t getPushedRayHitType(size_t j) {
|
|
Q_assert(j < _maxrays);
|
|
|
|
if (_rays[j].geomID == RTC_INVALID_GEOMETRY_ID) {
|
|
return hittype_t::NONE;
|
|
} else if (_rays[j].geomID == skygeom.geomID) {
|
|
return hittype_t::SKY;
|
|
} else {
|
|
return hittype_t::SOLID;
|
|
}
|
|
}
|
|
|
|
virtual const bsp2_dface_t *getPushedRayHitFace(size_t j) {
|
|
Q_assert(j < _maxrays);
|
|
|
|
const RTCRay &ray = _rays[j];
|
|
|
|
if (ray.geomID == RTC_INVALID_GEOMETRY_ID)
|
|
return nullptr;
|
|
|
|
const sceneinfo &si = Embree_SceneinfoForGeomID(ray.geomID);
|
|
const bsp2_dface_t *face = si.triToFace.at(ray.primID);
|
|
Q_assert(face != nullptr);
|
|
|
|
return face;
|
|
}
|
|
|
|
virtual void getPushedRayDir(size_t j, vec3_t out) {
|
|
Q_assert(j < _maxrays);
|
|
for (int i=0; i<3; i++) {
|
|
out[i] = _rays[j].dir[i];
|
|
}
|
|
}
|
|
|
|
virtual int getPushedRayPointIndex(size_t j) {
|
|
// Q_assert(_state != streamstate_t::READY);
|
|
Q_assert(j < _maxrays);
|
|
return _point_indices[j];
|
|
}
|
|
|
|
virtual void getPushedRayColor(size_t j, vec3_t out) {
|
|
Q_assert(j < _maxrays);
|
|
VectorCopy(_ray_colors[j], out);
|
|
}
|
|
|
|
virtual void getPushedRayNormalContrib(size_t j, vec3_t out) {
|
|
Q_assert(j < _maxrays);
|
|
VectorCopy(_ray_normalcontribs[j], out);
|
|
}
|
|
|
|
virtual int getPushedRayDynamicStyle(size_t j) {
|
|
Q_assert(j < _maxrays);
|
|
return _ray_dynamic_styles[j];
|
|
}
|
|
|
|
virtual void clearPushedRays() {
|
|
_numrays = 0;
|
|
//_state = streamstate_t::READY;
|
|
}
|
|
};
|
|
|
|
|
|
void AddGlassToRay(const RTCIntersectContext* context, unsigned rayIndex, float opacity, const vec3_t glasscolor) {
|
|
ray_source_info *ctx = ray_source_info::getRaySourceInfoFromEmbreeCtx(context);
|
|
raystream_embree_t *rs = ctx->raystream;
|
|
|
|
if (rs == nullptr) {
|
|
// FIXME: remove this.. once all ray casts use raystreams
|
|
// happens for bounce lights, e.g. Embree_TestSky
|
|
return;
|
|
}
|
|
|
|
// clamp opacity
|
|
opacity = qmin(qmax(0.0f, opacity), 1.0f);
|
|
|
|
Q_assert(rayIndex < rs->_numrays);
|
|
|
|
Q_assert(glasscolor[0] >= 0.0 && glasscolor[0] <= 1.0);
|
|
Q_assert(glasscolor[1] >= 0.0 && glasscolor[1] <= 1.0);
|
|
Q_assert(glasscolor[2] >= 0.0 && glasscolor[2] <= 1.0);
|
|
|
|
//multiply ray color by glass color
|
|
vec3_t tinted;
|
|
for (int i=0; i<3; i++) {
|
|
tinted[i] = rs->_ray_colors[rayIndex][i] * glasscolor[i];
|
|
}
|
|
|
|
// lerp between original ray color and fully tinted, based on opacity
|
|
vec3_t lerped = {0.0, 0.0, 0.0};
|
|
VectorMA(lerped, opacity, tinted, lerped);
|
|
VectorMA(lerped, 1.0-opacity, rs->_ray_colors[rayIndex], lerped);
|
|
|
|
// use the lerped color, scaled by (1-opacity) as the new ray color
|
|
// VectorScale(lerped, (1.0f - opacity), rs->_ray_colors[rayIndex]);
|
|
|
|
// use the lerped color
|
|
VectorCopy(lerped, rs->_ray_colors[rayIndex]);
|
|
}
|
|
|
|
void AddDynamicOccluderToRay(const RTCIntersectContext* context, unsigned rayIndex, int style)
|
|
{
|
|
ray_source_info *ctx = ray_source_info::getRaySourceInfoFromEmbreeCtx(context);
|
|
raystream_embree_t *rs = ctx->raystream;
|
|
|
|
rs->_ray_dynamic_styles[rayIndex] = style;
|
|
}
|