source/blender/draw/engines/eevee_next/eevee_instance.hh

@@ -119,7 +119,7 @@ class Instance {
         sync(*this),
         materials(*this),
         subsurface(*this, global_ubo_.subsurface),
-        pipelines(*this),
+        pipelines(*this, global_ubo_.pipeline),
         shadows(*this, global_ubo_.shadow),
         lights(*this),
         ambient_occlusion(*this, global_ubo_.ao),

source/blender/draw/engines/eevee_next/eevee_pipeline.cc

@@ -417,6 +417,10 @@ void DeferredLayer::begin_sync()
       /* Textures. */
       prepass_ps_.bind_texture(RBUFS_UTILITY_TEX_SLOT, inst_.pipelines.utility_tx);
 
+      inst_.pipelines.data.alpha_hash_scale = 1.0f;
+      if (inst_.is_viewport() && inst_.velocity.camera_has_motion()) {
+        inst_.pipelines.data.alpha_hash_scale = 1.0f;
+      }
       inst_.bind_uniform_data(&prepass_ps_);
       inst_.velocity.bind_resources(prepass_ps_);
       inst_.sampling.bind_resources(prepass_ps_);

source/blender/draw/engines/eevee_next/eevee_pipeline.hh

@@ -593,9 +593,10 @@ class PipelineModule {
   CapturePipeline capture;
 
   UtilityTexture utility_tx;
+  PipelineInfoData &data;
 
  public:
-  PipelineModule(Instance &inst)
+  PipelineModule(Instance &inst, PipelineInfoData &data)
       : background(inst),
         world(inst),
         world_volume(inst),
@@ -605,7 +606,8 @@ class PipelineModule {
         forward(inst),
         shadow(inst),
         volume(inst),
-        capture(inst){};
+        capture(inst),
+        data(data){};
 
   void begin_sync()
   {

source/blender/draw/engines/eevee_next/eevee_shader_shared.hh

@@ -1394,7 +1394,19 @@ struct ProbePlanarDisplayData {
 BLI_STATIC_ASSERT_ALIGN(ProbePlanarDisplayData, 16)
 
 /** \} */
+/* -------------------------------------------------------------------- */
+/** \name Pipeline Data
+ * \{ */
 
+struct PipelineInfoData {
+  float alpha_hash_scale;
+  float _pad0;
+  float _pad1;
+  float _pad3;
+};
+BLI_STATIC_ASSERT_ALIGN(PipelineInfoData, 16)
+
+/** \} */
 /* -------------------------------------------------------------------- */
 /** \name Uniform Data
  * \{ */
@@ -1410,6 +1422,7 @@ struct UniformData {
   ShadowSceneData shadow;
   SubsurfaceData subsurface;
   VolumesInfoData volumes;
+  PipelineInfoData pipeline;
 };
 BLI_STATIC_ASSERT_ALIGN(UniformData, 16)
 

source/blender/draw/engines/eevee_next/shaders/eevee_surf_depth_frag.glsl

@@ -38,7 +38,8 @@ void main()
   float threshold = 0.0;
 #  else
   float noise_offset = sampling_rng_1D_get(SAMPLING_TRANSPARENCY);
-  float threshold = transparency_hashed_alpha_threshold(1.0, noise_offset, g_data.P);
+  float threshold = transparency_hashed_alpha_threshold(
+      uniform_buf.pipeline.alpha_hash_scale, noise_offset, g_data.P);
 #  endif
 
   float transparency = average(g_transmittance);