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Merge pull request #80827 from lawnjelly/fix_cpu_particles_notif_transform

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[3.x] CPUParticles - fix non-interpolated `NOTIFICATION_TRANSFORM`
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Rémi Verschelde 2023-09-18 16:59:57 +02:00
commit 9eb4d5d5de
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GPG key ID: C3336907360768E1
1 changed files with 42 additions and 4 deletions
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46
scene/2d/cpu_particles_2d.cpp
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@ -101,18 +101,24 @@ void CPUParticles2D::set_lifetime_randomness(float p_random) {
}
void CPUParticles2D::set_use_local_coordinates(bool p_enable) {
local_coords = p_enable;
set_notify_transform(!p_enable);
#ifdef GODOT_CPU_PARTICLES_2D_LEGACY_COMPATIBILITY
// We only need NOTIFICATION_TRANSFORM_CHANGED when in global mode
// non-interpolated for legacy particles
// (because they are in local space and need inverse parent xform applying).
set_notify_transform(!_interpolated && !local_coords);
// Prevent sending item transforms when using global coords,
// and inform VisualServer to use identity mode.
#ifdef GODOT_CPU_PARTICLES_2D_LEGACY_COMPATIBILITY
set_canvas_item_use_identity_transform((_interpolated) && (!p_enable));
set_canvas_item_use_identity_transform(_interpolated && !local_coords);
// Always reset this, as it is unused when interpolation is on.
// (i.e. We do particles in global space, rather than pseudo globalspace.)
inv_emission_transform = Transform2D();
#else
set_canvas_item_use_identity_transform(!p_enable);
// When not using legacy, there is never a need for NOTIFICATION_TRANSFORM_CHANGED,
// so we leave it at the default (false).
set_canvas_item_use_identity_transform(!local_coords);
#endif
}
@ -1190,6 +1196,38 @@ void CPUParticles2D::_notification(int p_what) {
if (p_what == NOTIFICATION_INTERNAL_PHYSICS_PROCESS) {
_update_internal(true);
}
#ifdef GODOT_CPU_PARTICLES_2D_LEGACY_COMPATIBILITY
if (p_what == NOTIFICATION_TRANSFORM_CHANGED) {
if (!_interpolated && !local_coords) {
inv_emission_transform = get_global_transform().affine_inverse();
int pc = particles.size();
PoolVector<float>::Write w = particle_data.write();
PoolVector<Particle>::Read r = particles.read();
float *ptr = w.ptr();
for (int i = 0; i < pc; i++) {
Transform2D t = inv_emission_transform * r[i].transform;
if (r[i].active) {
ptr[0] = t.elements[0][0];
ptr[1] = t.elements[1][0];
ptr[2] = 0;
ptr[3] = t.elements[2][0];
ptr[4] = t.elements[0][1];
ptr[5] = t.elements[1][1];
ptr[6] = 0;
ptr[7] = t.elements[2][1];
} else {
memset(ptr, 0, sizeof(float) * 8);
}
ptr += 13;
}
}
}
#endif
}
void CPUParticles2D::convert_from_particles(Node *p_particles) {