Initialize particle trail history frame numbers

Fixes #88712

All particle trail sections were activated at once on the first cycle, instead
of being spread out over the trail's lifetime.
This commit is contained in:
Per Melin 2024-03-01 13:17:25 +01:00
parent 7d2ca2d8ac
commit 9b2d77a238

View file

@ -1452,6 +1452,11 @@ void ParticlesStorage::update_particles() {
if (uint32_t(history_size) != particles->frame_history.size()) { if (uint32_t(history_size) != particles->frame_history.size()) {
particles->frame_history.resize(history_size); particles->frame_history.resize(history_size);
memset(particles->frame_history.ptr(), 0, sizeof(ParticlesFrameParams) * history_size); memset(particles->frame_history.ptr(), 0, sizeof(ParticlesFrameParams) * history_size);
// Set the frame number so that we are able to distinguish an uninitialized
// frame from the true frame number zero. See issue #88712 for details.
for (int i = 0; i < history_size; i++) {
particles->frame_history[i].frame = UINT32_MAX;
}
} }
if (uint32_t(trail_steps) != particles->trail_params.size() || particles->frame_params_buffer.is_null()) { if (uint32_t(trail_steps) != particles->trail_params.size() || particles->frame_params_buffer.is_null()) {