From ac9ebc9de31fc923f3e867e6741298a1e1eb175f Mon Sep 17 00:00:00 2001 From: Brecht Van Lommel Date: Wed, 4 May 2022 19:46:13 +0200 Subject: Fix Cycles division by zero in material preview render If the render gets cancelled before the first sample finishes. --- intern/cycles/integrator/render_scheduler.cpp | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'intern') diff --git a/intern/cycles/integrator/render_scheduler.cpp b/intern/cycles/integrator/render_scheduler.cpp index a75662c90d8..ebc3170393f 100644 --- a/intern/cycles/integrator/render_scheduler.cpp +++ b/intern/cycles/integrator/render_scheduler.cpp @@ -750,6 +750,11 @@ double RenderScheduler::guess_display_update_interval_in_seconds_for_num_samples int RenderScheduler::calculate_num_samples_per_update() const { const double time_per_sample_average = path_trace_time_.get_average(); + /* Fall back to 1 sample if we have not recorded a time yet. */ + if (time_per_sample_average == 0.0) { + return 1; + } + const double num_samples_in_second = pixel_size_ * pixel_size_ / time_per_sample_average; const double update_interval_in_seconds = guess_display_update_interval_in_seconds(); -- cgit v1.2.3