Workbench,EEVEE: Viewport Render Samples

 - Add `render_aa` and `viewport_aa` sampling setting for workbench. 0
   samples means no AA, 1 sample uses FXAA and more samples will use
   TAA.
   The viewport `gpu_viewport_quality` can still limit viewport anti-aliasing
   method.
 - Use TAA when rendering images. (this used to be CPU based FSAA)
 - Removed `R_OSA` related settings.

Reviewers: fclem, brecht

Maniphest Tasks: T60847

Differential Revision: https://developer.blender.org/D4773

1 files changed, 7 insertions, 6 deletions

diff --git a/source/blender/draw/engines/eevee/eevee_engine.c b/source/blender/draw/engines/eevee/eevee_engine.c
index 962bc8e5efb..26f33f4db31 100644
--- a/source/blender/draw/engines/eevee/eevee_engine.c
+++ b/source/blender/draw/engines/eevee/eevee_engine.c
@@ -180,12 +180,13 @@ static void eevee_draw_background(void *vedata)
   /* Sort transparents before the loop. */
   DRW_pass_sort_shgroup_z(psl->transparent_pass);
 
-  /* Number of iteration: needed for all temporal effect (SSR, volumetrics)
-   * when using opengl render. */
-  int loop_len = (DRW_state_is_image_render() &&
-                  (stl->effects->enabled_effects & (EFFECT_VOLUMETRIC | EFFECT_SSR)) != 0) ?
-                     4 :
-                     1;
+  /* Number of iteration: Use viewport taa_samples when using viewport rendering */
+  int loop_len = 1;
+  if (DRW_state_is_image_render()) {
+    const DRWContextState *draw_ctx = DRW_context_state_get();
+    const Scene *scene = draw_ctx->scene;
+    loop_len = MAX2(1, scene->eevee.taa_samples);
+  }
 
   while (loop_len--) {
     float clear_col[4] = {0.0f, 0.0f, 0.0f, 0.0f};