Fix T78704: RenderPass normals disapear when view isn't updated

When the view isn't updated the renderpass thought that it was rendering
the next sample, skipping the conversion from encoded to blender
normals.

This patch resets the current sample when only rendering single sample
layers.

Reviewed By: Clément Foucault

Differential Revision: https://developer.blender.org/D8280

1 files changed, 3 insertions, 3 deletions

diff --git a/source/blender/draw/engines/eevee/eevee_temporal_sampling.c b/source/blender/draw/engines/eevee/eevee_temporal_sampling.c
index 87ded7ef7ca..997f9a5be9d 100644
--- a/source/blender/draw/engines/eevee/eevee_temporal_sampling.c
+++ b/source/blender/draw/engines/eevee/eevee_temporal_sampling.c
@@ -240,9 +240,9 @@ int EEVEE_temporal_sampling_init(EEVEE_ViewLayerData *UNUSED(sldata), EEVEE_Data
       view_is_valid = view_is_valid && (ED_screen_animation_no_scrub(wm) == NULL);
     }
 
-    effects->taa_total_sample = EEVEE_renderpasses_only_first_sample_pass_active(vedata) ?
-                                    1 :
-                                    scene_eval->eevee.taa_samples;
+    const bool first_sample_only = EEVEE_renderpasses_only_first_sample_pass_active(vedata);
+    view_is_valid = view_is_valid && !first_sample_only;
+    effects->taa_total_sample = first_sample_only ? 1 : scene_eval->eevee.taa_samples;
     MAX2(effects->taa_total_sample, 0);
 
     DRW_view_persmat_get(NULL, persmat, false);