Assumes higher lods are dense enough for their pixel size.
Otherwise changes in tile lod causes visible popping.

@@ -724,6 +724,7 @@ class RENDER_PT_eevee_next_shadows(RenderButtonsPanel, Panel):
 
         col = layout.column()
         col.prop(props, "shadow_normal_bias", text="Normal Bias")
+        col.prop(props, "shadow_pcf_radius", text="PCF Radius")

@@ -1023,3 +1023,3 @@
   /* Bias the shading point by using the normal to avoid self intersection. */
   float normal_bias;
-  int _pad2;
+  float pcf_radius;

@@ -99,0 +125,4 @@
+vec3 shadow_punctual_reconstruct_position(ShadowSampleParams params, LightData light, vec3 uvw)
+{
+  vec3 clip_P = uvw * 2.0 - 1.0;
+  mat4 winmat = shadow_punctual_projection_perspective(light);

@@ -99,0 +126,4 @@
+{
+  vec3 clip_P = uvw * 2.0 - 1.0;
+  mat4 winmat = shadow_punctual_projection_perspective(light);
+  vec3 lP = project_point(inverse(winmat), clip_P);

@@ -406,6 +408,64 @@ SHADOW_MAP_TRACE_FN(ShadowRayPunctual)
 /** \name Shadow Evaluation
  * \{ */
 
+vec3 shadow_pcf_offset(LightData light, const bool is_directional, vec3 P, vec3 Ng)

@@ -409,0 +427,4 @@
+    return vec3(0.0);
+  }
+
+  /* Compute shadomap TBN matrix. */

@@ -409,0 +451,4 @@
+    BP = line_plane_intersect(light._position, normalize(BP - light._position), P, Ng);
+  }
+
+  mat3 TBN = mat3(TP - P, BP - P, Ng);

@@ -409,0 +460,4 @@
+  rand = sampling_rng_2D_get(SAMPLING_SHADOW_V);
+#endif
+  vec2 pcf_offset = interlieved_gradient_noise(UTIL_TEXEL, vec2(0.0), rand);
+  pcf_offset = pcf_offset * vec2(2.0) - vec2(1.0);

@@ -1917,8 +1917,8 @@ typedef struct SceneEEVEE {
   int shadow_ray_count;
   int shadow_step_count;
   float shadow_normal_bias;
+  float shadow_pcf_radius;

@@ -54,3 +73,2 @@
 /* TODO(fclem): Remove. Only here to avoid include order hell with common_math_lib. */
-mat4x4 shadow_projection_perspective(
-    float left, float right, float bottom, float top, float near_clip, float far_clip)
+mat4x4 shadow_projection_perspective(float side, float near_clip, float far_clip)

@@ -76,0 +95,4 @@
+  float d = 2.0 * near_clip * far_clip;
+
+  mat4x4 mat = mat4x4(1.0);
+  if (side != 0.0 && z_delta != 0.0) {

@@ -2968,1 +2968,4 @@
 
+  if (!MAIN_VERSION_FILE_ATLEAST(bmain, 402, 6)) {
+    LISTBASE_FOREACH (Light *, light, &bmain->lights) {
+      light->shadow_filter_radius = 3.0f;