static void blender_camera_from_view(BlenderCamera *bcam, BL::RenderEngine b_engine, BL::Scene b_scene, BL::SpaceView3D b_v3d, BL::RegionView3D b_rv3d, int width, int height, bool skip_panorama = false)
{
/* 3d view parameters */
bcam->nearclip = b_v3d.clip_start();
bcam->farclip = b_v3d.clip_end();
bcam->lens = b_v3d.lens();
bcam->shuttertime = b_scene.render().motion_blur_shutter();
curvemapping_to_array(b_scene.render().motion_blur_shutter_curve(),
bcam->shutter_curve,
RAMP_TABLE_SIZE);
if(b_rv3d.view_perspective() == BL::RegionView3D::view_perspective_CAMERA) {
/* camera view */
BL::Object b_ob = (b_v3d.lock_camera_and_layers())? b_scene.camera(): b_v3d.camera();
if(b_ob) {
blender_camera_from_object(bcam, b_engine, b_ob, skip_panorama);
if(!skip_panorama && bcam->type == CAMERA_PANORAMA) {
/* in panorama camera view, we map viewplane to camera border */
BoundBox2D view_box, cam_box;
blender_camera_view_subset(b_engine, b_scene.render(), b_scene, b_ob, b_v3d, b_rv3d, width, height,
&view_box, &cam_box);
bcam->pano_viewplane = view_box.make_relative_to(cam_box);
}
else {
/* magic zoom formula */
bcam->zoom = (float)b_rv3d.view_camera_zoom();
bcam->zoom = (1.41421f + bcam->zoom/50.0f);
bcam->zoom *= bcam->zoom;
bcam->zoom = 2.0f/bcam->zoom;
/* offset */
bcam->offset = get_float2(b_rv3d.view_camera_offset());
}
}
}
else if(b_rv3d.view_perspective() == BL::RegionView3D::view_perspective_ORTHO) {
/* orthographic view */
bcam->farclip *= 0.5f;
bcam->nearclip = -bcam->farclip;
float sensor_size;
if(bcam->sensor_fit == BlenderCamera::VERTICAL)
sensor_size = bcam->sensor_height;
else
sensor_size = bcam->sensor_width;
bcam->type = CAMERA_ORTHOGRAPHIC;
bcam->ortho_scale = b_rv3d.view_distance() * sensor_size / b_v3d.lens();
}
bcam->zoom *= 2.0f;
/* 3d view transform */
bcam->matrix = transform_inverse(get_transform(b_rv3d.view_matrix()));
}
static void attr_create_subd_uv_map(Scene *scene, Mesh *mesh, BL::Mesh &b_mesh, bool subdivide_uvs)
{
if (b_mesh.uv_layers.length() != 0) {
BL::Mesh::uv_layers_iterator l;
int i = 0;
for (b_mesh.uv_layers.begin(l); l != b_mesh.uv_layers.end(); ++l, ++i) {
bool active_render = l->active_render();
AttributeStandard uv_std = (active_render) ? ATTR_STD_UV : ATTR_STD_NONE;
ustring uv_name = ustring(l->name().c_str());
AttributeStandard tangent_std = (active_render) ? ATTR_STD_UV_TANGENT : ATTR_STD_NONE;
ustring tangent_name = ustring((string(l->name().c_str()) + ".tangent").c_str());
/* Denotes whether UV map was requested directly. */
const bool need_uv = mesh->need_attribute(scene, uv_name) ||
mesh->need_attribute(scene, uv_std);
/* Denotes whether tangent was requested directly. */
const bool need_tangent = mesh->need_attribute(scene, tangent_name) ||
(active_render && mesh->need_attribute(scene, tangent_std));
Attribute *uv_attr = NULL;
/* UV map */
if (need_uv || need_tangent) {
if (active_render)
uv_attr = mesh->subd_attributes.add(uv_std, uv_name);
else
uv_attr = mesh->subd_attributes.add(uv_name, TypeFloat2, ATTR_ELEMENT_CORNER);
if (subdivide_uvs) {
uv_attr->flags |= ATTR_SUBDIVIDED;
}
BL::Mesh::polygons_iterator p;
float2 *fdata = uv_attr->data_float2();
for (b_mesh.polygons.begin(p); p != b_mesh.polygons.end(); ++p) {
int n = p->loop_total();
for (int j = 0; j < n; j++) {
*(fdata++) = get_float2(l->data[p->loop_start() + j].uv());
}
}
}
/* UV tangent */
if (need_tangent) {
AttributeStandard sign_std = (active_render) ? ATTR_STD_UV_TANGENT_SIGN : ATTR_STD_NONE;
ustring sign_name = ustring((string(l->name().c_str()) + ".tangent_sign").c_str());
bool need_sign = (mesh->need_attribute(scene, sign_name) ||
mesh->need_attribute(scene, sign_std));
mikk_compute_tangents(b_mesh, l->name().c_str(), mesh, need_sign, active_render);
}
/* Remove temporarily created UV attribute. */
if (!need_uv && uv_attr != NULL) {
mesh->subd_attributes.remove(uv_attr);
}
}
}
else if (mesh->need_attribute(scene, ATTR_STD_UV_TANGENT)) {
bool need_sign = mesh->need_attribute(scene, ATTR_STD_UV_TANGENT_SIGN);
mikk_compute_tangents(b_mesh, NULL, mesh, need_sign, true);
if (!mesh->need_attribute(scene, ATTR_STD_GENERATED)) {
mesh->subd_attributes.remove(ATTR_STD_GENERATED);
}
}
}
/* Create uv map attributes. */
static void attr_create_uv_map(Scene *scene, Mesh *mesh, BL::Mesh &b_mesh)
{
if (b_mesh.uv_layers.length() != 0) {
BL::Mesh::uv_layers_iterator l;
for (b_mesh.uv_layers.begin(l); l != b_mesh.uv_layers.end(); ++l) {
const bool active_render = l->active_render();
AttributeStandard uv_std = (active_render) ? ATTR_STD_UV : ATTR_STD_NONE;
ustring uv_name = ustring(l->name().c_str());
AttributeStandard tangent_std = (active_render) ? ATTR_STD_UV_TANGENT : ATTR_STD_NONE;
ustring tangent_name = ustring((string(l->name().c_str()) + ".tangent").c_str());
/* Denotes whether UV map was requested directly. */
const bool need_uv = mesh->need_attribute(scene, uv_name) ||
mesh->need_attribute(scene, uv_std);
/* Denotes whether tangent was requested directly. */
const bool need_tangent = mesh->need_attribute(scene, tangent_name) ||
(active_render && mesh->need_attribute(scene, tangent_std));
/* UV map */
/* NOTE: We create temporary UV layer if its needed for tangent but
* wasn't requested by other nodes in shaders.
*/
Attribute *uv_attr = NULL;
if (need_uv || need_tangent) {
if (active_render) {
uv_attr = mesh->attributes.add(uv_std, uv_name);
}
else {
uv_attr = mesh->attributes.add(uv_name, TypeFloat2, ATTR_ELEMENT_CORNER);
}
BL::Mesh::loop_triangles_iterator t;
float2 *fdata = uv_attr->data_float2();
for (b_mesh.loop_triangles.begin(t); t != b_mesh.loop_triangles.end(); ++t) {
int3 li = get_int3(t->loops());
fdata[0] = get_float2(l->data[li[0]].uv());
fdata[1] = get_float2(l->data[li[1]].uv());
fdata[2] = get_float2(l->data[li[2]].uv());
fdata += 3;
}
}
/* UV tangent */
if (need_tangent) {
AttributeStandard sign_std = (active_render) ? ATTR_STD_UV_TANGENT_SIGN : ATTR_STD_NONE;
ustring sign_name = ustring((string(l->name().c_str()) + ".tangent_sign").c_str());
bool need_sign = (mesh->need_attribute(scene, sign_name) ||
mesh->need_attribute(scene, sign_std));
mikk_compute_tangents(b_mesh, l->name().c_str(), mesh, need_sign, active_render);
}
/* Remove temporarily created UV attribute. */
if (!need_uv && uv_attr != NULL) {
mesh->attributes.remove(uv_attr);
}
}
}
else if (mesh->need_attribute(scene, ATTR_STD_UV_TANGENT)) {
bool need_sign = mesh->need_attribute(scene, ATTR_STD_UV_TANGENT_SIGN);
mikk_compute_tangents(b_mesh, NULL, mesh, need_sign, true);
if (!mesh->need_attribute(scene, ATTR_STD_GENERATED)) {
mesh->attributes.remove(ATTR_STD_GENERATED);
}
}
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Fill the Octane Camera properties from Blender View data
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
void BlenderSync::load_camera_from_view(Camera* cam, BL::Scene b_scene, BL::SpaceView3D b_v3d, BL::RegionView3D b_rv3d, int width, int height, float2& offset, bool skip_panorama) {
float zoom;
if(b_rv3d.view_perspective() == BL::RegionView3D::view_perspective_CAMERA) {
BL::Object b_ob = (b_v3d.lock_camera_and_layers()) ? b_scene.camera() : b_v3d.camera();
if(b_ob) {
cam->matrix = scene->matrix * get_transform(b_ob.matrix_world());
// Magic zoom formula
zoom = (float) b_rv3d.view_camera_zoom();
zoom = (1.41421f + zoom/50.0f);
zoom *= zoom;
zoom = 2.0f/zoom;
zoom *= 2.0f;
cam->zoom = zoom;
offset = get_float2(b_rv3d.view_camera_offset());
load_camera_from_object(cam, b_ob, width, height, offset, skip_panorama);
}
} //if(b_rv3d.view_perspective() == BL::RegionView3D::view_perspective_CAMERA)
else if(b_rv3d.view_perspective() == BL::RegionView3D::view_perspective_ORTHO || b_rv3d.view_perspective() == BL::RegionView3D::view_perspective_PERSP) {
cam->zoom = 2.0f;
cam->near_clip_depth = b_v3d.clip_start();
cam->far_clip_depth = b_v3d.clip_end();
cam->matrix = scene->matrix * transform_inverse(get_transform(b_rv3d.view_matrix()));
cam->type = CAMERA_PERSPECTIVE;
if(b_rv3d.view_perspective() == BL::RegionView3D::view_perspective_ORTHO)
cam->ortho = true;
else
cam->ortho = false;
PointerRNA oct_camera = RNA_pointer_get(&b_scene.ptr, "oct_view_cam");
get_cam_settings(cam, oct_camera, true);
cam->lens_shift_x = 0;
cam->lens_shift_y = 0;
cam->sensorwidth = 32.0f;
cam->sensorheight = 18.0f;
cam->sensor_fit = Camera::AUTO;
if(cam->ortho) {
float ortho_scale;
get_viewport_ortho_scale(cam, b_rv3d.view_distance(), b_v3d.lens(), width, height, &ortho_scale);
cam->fov = ortho_scale * cam->zoom;
}
else {
float sensor_size;
get_camera_sensor_size(cam, width, height, &sensor_size);
cam->fov = 2.0f * atanf((0.5f * sensor_size * cam->zoom) / b_v3d.lens()) *180.0f / M_PI_F;
}
// Position
cam->look_at.x = cam->eye_point.x = cam->matrix.x.w;
cam->look_at.y = cam->eye_point.y = cam->matrix.y.w;
cam->look_at.z = cam->eye_point.z = cam->matrix.z.w;
if(cam->ortho) {
float3 dir = transform_direction(&cam->matrix, make_float3(0.0f, 0.0f, b_rv3d.view_distance()));
cam->eye_point.x = cam->eye_point.x + dir.x;
cam->eye_point.y = cam->eye_point.y + dir.y;
cam->eye_point.z = cam->eye_point.z + dir.z;
}
else {
float3 dir = transform_direction(&cam->matrix, make_float3(0.0f, 0.0f, -1.0f));
cam->look_at.x = cam->look_at.x + dir.x;
cam->look_at.y = cam->look_at.y + dir.y;
cam->look_at.z = cam->look_at.z + dir.z;
}
cam->up = normalize(transform_direction(&cam->matrix, make_float3(0.0f, 1.0f, 0.0f)));
} //else if(b_rv3d.view_perspective() == BL::RegionView3D::view_perspective_ORTHO || b_rv3d.view_perspective() == BL::RegionView3D::view_perspective_PERSP)
get_camera_border(cam, b_v3d, b_rv3d, width, height);
} //load_camera_from_view()
Object *BlenderSync::sync_object(BL::Depsgraph &b_depsgraph,
BL::ViewLayer &b_view_layer,
BL::DepsgraphObjectInstance &b_instance,
float motion_time,
bool show_self,
bool show_particles,
BlenderObjectCulling &culling,
bool *use_portal)
{
const bool is_instance = b_instance.is_instance();
BL::Object b_ob = b_instance.object();
BL::Object b_parent = is_instance ? b_instance.parent() : b_instance.object();
BL::Object b_ob_instance = is_instance ? b_instance.instance_object() : b_ob;
const bool motion = motion_time != 0.0f;
/*const*/ Transform tfm = get_transform(b_ob.matrix_world());
int *persistent_id = NULL;
BL::Array<int, OBJECT_PERSISTENT_ID_SIZE> persistent_id_array;
if (is_instance) {
persistent_id_array = b_instance.persistent_id();
persistent_id = persistent_id_array.data;
}
/* light is handled separately */
if (!motion && object_is_light(b_ob)) {
/* TODO: don't use lights for excluded layers used as mask layer,
* when dynamic overrides are back. */
#if 0
if (!((layer_flag & view_layer.holdout_layer) && (layer_flag & view_layer.exclude_layer)))
#endif
{
sync_light(b_parent,
persistent_id,
b_ob,
b_ob_instance,
is_instance ? b_instance.random_id() : 0,
tfm,
use_portal);
}
return NULL;
}
/* only interested in object that we can create meshes from */
if (!object_is_mesh(b_ob)) {
return NULL;
}
/* Perform object culling. */
if (culling.test(scene, b_ob, tfm)) {
return NULL;
}
/* Visibility flags for both parent and child. */
PointerRNA cobject = RNA_pointer_get(&b_ob.ptr, "cycles");
bool use_holdout = get_boolean(cobject, "is_holdout") ||
b_parent.holdout_get(PointerRNA_NULL, b_view_layer);
uint visibility = object_ray_visibility(b_ob) & PATH_RAY_ALL_VISIBILITY;
if (b_parent.ptr.data != b_ob.ptr.data) {
visibility &= object_ray_visibility(b_parent);
}
/* TODO: make holdout objects on excluded layer invisible for non-camera rays. */
#if 0
if (use_holdout && (layer_flag & view_layer.exclude_layer)) {
visibility &= ~(PATH_RAY_ALL_VISIBILITY - PATH_RAY_CAMERA);
}
#endif
/* Clear camera visibility for indirect only objects. */
bool use_indirect_only = b_parent.indirect_only_get(PointerRNA_NULL, b_view_layer);
if (use_indirect_only) {
visibility &= ~PATH_RAY_CAMERA;
}
/* Don't export completely invisible objects. */
if (visibility == 0) {
return NULL;
}
/* key to lookup object */
ObjectKey key(b_parent, persistent_id, b_ob_instance);
Object *object;
/* motion vector case */
if (motion) {
object = object_map.find(key);
if (object && object->use_motion()) {
/* Set transform at matching motion time step. */
int time_index = object->motion_step(motion_time);
if (time_index >= 0) {
object->motion[time_index] = tfm;
}
/* mesh deformation */
if (object->mesh)
sync_mesh_motion(b_depsgraph, b_ob, object, motion_time);
}
return object;
}
/* test if we need to sync */
bool object_updated = false;
if (object_map.sync(&object, b_ob, b_parent, key))
object_updated = true;
/* mesh sync */
object->mesh = sync_mesh(
b_depsgraph, b_ob, b_ob_instance, object_updated, show_self, show_particles);
/* special case not tracked by object update flags */
/* holdout */
if (use_holdout != object->use_holdout) {
object->use_holdout = use_holdout;
scene->object_manager->tag_update(scene);
object_updated = true;
}
if (visibility != object->visibility) {
object->visibility = visibility;
object_updated = true;
}
bool is_shadow_catcher = get_boolean(cobject, "is_shadow_catcher");
if (is_shadow_catcher != object->is_shadow_catcher) {
object->is_shadow_catcher = is_shadow_catcher;
object_updated = true;
}
/* sync the asset name for Cryptomatte */
BL::Object parent = b_ob.parent();
ustring parent_name;
if (parent) {
while (parent.parent()) {
parent = parent.parent();
}
parent_name = parent.name();
}
else {
parent_name = b_ob.name();
}
if (object->asset_name != parent_name) {
object->asset_name = parent_name;
object_updated = true;
}
/* object sync
* transform comparison should not be needed, but duplis don't work perfect
* in the depsgraph and may not signal changes, so this is a workaround */
if (object_updated || (object->mesh && object->mesh->need_update) || tfm != object->tfm) {
object->name = b_ob.name().c_str();
object->pass_id = b_ob.pass_index();
object->tfm = tfm;
object->motion.clear();
/* motion blur */
Scene::MotionType need_motion = scene->need_motion();
if (need_motion != Scene::MOTION_NONE && object->mesh) {
Mesh *mesh = object->mesh;
mesh->use_motion_blur = false;
mesh->motion_steps = 0;
uint motion_steps;
if (need_motion == Scene::MOTION_BLUR) {
motion_steps = object_motion_steps(b_parent, b_ob);
mesh->motion_steps = motion_steps;
if (motion_steps && object_use_deform_motion(b_parent, b_ob)) {
mesh->use_motion_blur = true;
}
}
else {
motion_steps = 3;
mesh->motion_steps = motion_steps;
}
object->motion.clear();
object->motion.resize(motion_steps, transform_empty());
if (motion_steps) {
object->motion[motion_steps / 2] = tfm;
for (size_t step = 0; step < motion_steps; step++) {
motion_times.insert(object->motion_time(step));
}
}
}
/* dupli texture coordinates and random_id */
if (is_instance) {
object->dupli_generated = 0.5f * get_float3(b_instance.orco()) -
make_float3(0.5f, 0.5f, 0.5f);
object->dupli_uv = get_float2(b_instance.uv());
object->random_id = b_instance.random_id();
}
else {
object->dupli_generated = make_float3(0.0f, 0.0f, 0.0f);
object->dupli_uv = make_float2(0.0f, 0.0f);
object->random_id = hash_int_2d(hash_string(object->name.c_str()), 0);
}
object->tag_update(scene);
}
if (is_instance) {
/* Sync possible particle data. */
sync_dupli_particle(b_parent, b_instance, object);
}
return object;
}
Object *BlenderSync::sync_object(BL::Object b_parent, int persistent_id[OBJECT_PERSISTENT_ID_SIZE], BL::DupliObject b_dupli_ob, Transform& tfm, uint layer_flag, int motion, bool hide_tris)
{
BL::Object b_ob = (b_dupli_ob ? b_dupli_ob.object() : b_parent);
/* light is handled separately */
if(object_is_light(b_ob)) {
/* don't use lamps for excluded layers used as mask layer */
if(!motion && !((layer_flag & render_layer.holdout_layer) && (layer_flag & render_layer.exclude_layer)))
sync_light(b_parent, persistent_id, b_ob, tfm);
return NULL;
}
/* only interested in object that we can create meshes from */
if(!object_is_mesh(b_ob))
return NULL;
/* key to lookup object */
ObjectKey key(b_parent, persistent_id, b_ob);
Object *object;
/* motion vector case */
if(motion) {
object = object_map.find(key);
if(object) {
if(tfm != object->tfm) {
if(motion == -1)
object->motion.pre = tfm;
else
object->motion.post = tfm;
object->use_motion = true;
}
/* mesh deformation blur not supported yet */
if(!scene->integrator->motion_blur)
sync_mesh_motion(b_ob, object->mesh, motion);
}
return object;
}
/* test if we need to sync */
bool object_updated = false;
if(object_map.sync(&object, b_ob, b_parent, key))
object_updated = true;
bool use_holdout = (layer_flag & render_layer.holdout_layer) != 0;
/* mesh sync */
object->mesh = sync_mesh(b_ob, object_updated, hide_tris);
/* special case not tracked by object update flags */
/* holdout */
if(use_holdout != object->use_holdout) {
object->use_holdout = use_holdout;
scene->object_manager->tag_update(scene);
object_updated = true;
}
/* visibility flags for both parent and child */
uint visibility = object_ray_visibility(b_ob) & PATH_RAY_ALL_VISIBILITY;
if(b_parent.ptr.data != b_ob.ptr.data) {
visibility &= object_ray_visibility(b_parent);
object->random_id ^= hash_int(hash_string(b_parent.name().c_str()));
}
/* make holdout objects on excluded layer invisible for non-camera rays */
if(use_holdout && (layer_flag & render_layer.exclude_layer))
visibility &= ~(PATH_RAY_ALL_VISIBILITY - PATH_RAY_CAMERA);
/* camera flag is not actually used, instead is tested against render layer
* flags */
if(visibility & PATH_RAY_CAMERA) {
visibility |= layer_flag << PATH_RAY_LAYER_SHIFT;
visibility &= ~PATH_RAY_CAMERA;
}
if(visibility != object->visibility) {
object->visibility = visibility;
object_updated = true;
}
/* object sync
* transform comparison should not be needed, but duplis don't work perfect
* in the depsgraph and may not signal changes, so this is a workaround */
if(object_updated || (object->mesh && object->mesh->need_update) || tfm != object->tfm) {
object->name = b_ob.name().c_str();
object->pass_id = b_ob.pass_index();
object->tfm = tfm;
object->motion.pre = tfm;
object->motion.post = tfm;
object->use_motion = false;
/* random number */
object->random_id = hash_string(object->name.c_str());
if(persistent_id) {
for(int i = 0; i < OBJECT_PERSISTENT_ID_SIZE; i++)
object->random_id = hash_int_2d(object->random_id, persistent_id[i]);
}
else
object->random_id = hash_int_2d(object->random_id, 0);
if(b_parent.ptr.data != b_ob.ptr.data)
object->random_id ^= hash_int(hash_string(b_parent.name().c_str()));
/* dupli texture coordinates */
if (b_dupli_ob) {
object->dupli_generated = 0.5f*get_float3(b_dupli_ob.orco()) - make_float3(0.5f, 0.5f, 0.5f);
object->dupli_uv = get_float2(b_dupli_ob.uv());
}
else {
object->dupli_generated = make_float3(0.0f, 0.0f, 0.0f);
object->dupli_uv = make_float2(0.0f, 0.0f);
}
object->tag_update(scene);
}
return object;
}
