Merge pull request #107568 from Rudolph-B/Issue-92708

Fix floating point precision errors when setting particle trail length

scene/2d/gpu_particles_2d.cpp

@@ -185,7 +185,7 @@ void GPUParticles2D::set_trail_enabled(bool p_enabled) {
 }
 
 void GPUParticles2D::set_trail_lifetime(double p_seconds) {
-	ERR_FAIL_COND(p_seconds < 0.01);
+	ERR_FAIL_COND(p_seconds < 0.01 - CMP_EPSILON);
 	trail_lifetime = p_seconds;
 	RS::get_singleton()->particles_set_trails(particles, trail_enabled, trail_lifetime);
 	queue_redraw();

scene/3d/gpu_particles_3d.cpp

@@ -244,7 +244,7 @@ void GPUParticles3D::set_trail_enabled(bool p_enabled) {
 }
 
 void GPUParticles3D::set_trail_lifetime(double p_seconds) {
-	ERR_FAIL_COND(p_seconds < 0.01);
+	ERR_FAIL_COND(p_seconds < 0.01 - CMP_EPSILON);
 	trail_lifetime = p_seconds;
 	RS::get_singleton()->particles_set_trails(particles, trail_enabled, trail_lifetime);
 }

servers/rendering/renderer_rd/storage_rd/particles_storage.cpp

@@ -439,7 +439,7 @@ void ParticlesStorage::particles_set_fractional_delta(RID p_particles, bool p_en
 void ParticlesStorage::particles_set_trails(RID p_particles, bool p_enable, double p_length) {
 	Particles *particles = particles_owner.get_or_null(p_particles);
 	ERR_FAIL_NULL(particles);
-	ERR_FAIL_COND(p_length < 0.01);
+	ERR_FAIL_COND(p_length < 0.01 - CMP_EPSILON);
 	p_length = MIN(10.0, p_length);
 
 	particles->trails_enabled = p_enable;