Fix T82385 EEVEE: Alpha Clip shadows actually using Alpha Hashed shadows

The shadow path was not using the alpha threshold.

1 files changed, 8 insertions, 4 deletions

diff --git a/source/blender/gpu/shaders/material/gpu_shader_material_output_material.glsl b/source/blender/gpu/shaders/material/gpu_shader_material_output_material.glsl
index 4cb00c15b78..14271f9d107 100644
--- a/source/blender/gpu/shaders/material/gpu_shader_material_output_material.glsl
+++ b/source/blender/gpu/shaders/material/gpu_shader_material_output_material.glsl
@@ -1,5 +1,9 @@
-void node_output_material(
-    Closure surface, Closure volume, vec3 displacement, float alpha_threshold, out Closure result)
+void node_output_material(Closure surface,
+                          Closure volume,
+                          vec3 displacement,
+                          float alpha_threshold,
+                          float shadow_threshold,
+                          out Closure result)
 {
 #ifdef VOLUMETRICS
   result = volume;
@@ -7,9 +11,9 @@ void node_output_material(
   result = surface;
 #  if defined(USE_ALPHA_HASH)
   /* Alpha clip emulation. */
-  if (alpha_threshold >= 0.0) {
+  if ((rayType != EEVEE_RAY_SHADOW) ? (alpha_threshold >= 0.0) : (shadow_threshold >= 0.0)) {
     float alpha = saturate(1.0 - avg(result.transmittance));
-    result.transmittance = vec3(step(alpha, alpha_threshold));
+    result.transmittance = vec3(step(alpha, max(alpha_threshold, shadow_threshold)));
   }
 #  endif
 #endif