diff --git a/gfx/drivers_shader/shader_vulkan.cpp b/gfx/drivers_shader/shader_vulkan.cpp
index 66f9dba12b..7931ca28b9 100644
--- a/gfx/drivers_shader/shader_vulkan.cpp
+++ b/gfx/drivers_shader/shader_vulkan.cpp
@@ -315,6 +315,11 @@ class Pass
          return reflection;
       }
 
+      void set_pass_number(unsigned pass)
+      {
+         pass_number = pass;
+      }
+
       void end_frame();
 
    private:
@@ -385,6 +390,7 @@ class Pass
 
       uint64_t frame_count = 0;
       unsigned frame_count_period = 0;
+      unsigned pass_number = 0;
 
       string pass_name;
 };
@@ -514,6 +520,7 @@ void vulkan_filter_chain::set_num_passes(unsigned num_passes)
       passes.emplace_back(new Pass(device, memory_properties,
                cache, deferred_calls.size(), i + 1 == num_passes));
       passes.back()->set_common_resources(common);
+      passes.back()->set_pass_number(i);
    }
 }
 
@@ -1377,6 +1384,7 @@ bool Pass::build()
    }
 
    reflection = slang_reflection{};
+   reflection.pass_number = pass_number;
    reflection.texture_semantic_map = &common->texture_semantic_map;
    reflection.texture_semantic_uniform_map = &common->texture_semantic_uniform_map;
    reflection.semantic_map = &common->semantic_map;
diff --git a/gfx/drivers_shader/slang_reflection.cpp b/gfx/drivers_shader/slang_reflection.cpp
index 1bfc616c2b..0715850fb7 100644
--- a/gfx/drivers_shader/slang_reflection.cpp
+++ b/gfx/drivers_shader/slang_reflection.cpp
@@ -255,6 +255,13 @@ static bool add_active_buffer_ranges(const Compiler &compiler, const Resource &r
       auto tex_sem = slang_uniform_name_to_texture_semantic(*reflection->texture_semantic_uniform_map,
             name, &tex_sem_index);
 
+      if (tex_sem == SLANG_TEXTURE_SEMANTIC_PASS_OUTPUT && tex_sem_index >= reflection->pass_number)
+      {
+         RARCH_ERR("[slang]: Non causal filter chain detected. Shader is trying to use output from pass #%u, but this shader is pass #%u.\n",
+               tex_sem_index, reflection->pass_number);
+         return false;
+      }
+
       if (sem != SLANG_INVALID_SEMANTIC)
       {
          if (!validate_type_for_semantic(type, sem))
@@ -280,6 +287,8 @@ static bool add_active_buffer_ranges(const Compiler &compiler, const Resource &r
       else
       {
          // TODO: Handle invalid semantics as user defined.
+         RARCH_ERR("[slang]: Unknown semantic found.\n");
+         return false;
       }
    }
    return true;
diff --git a/gfx/drivers_shader/slang_reflection.hpp b/gfx/drivers_shader/slang_reflection.hpp
index b6b15b5945..9394b8a3b4 100644
--- a/gfx/drivers_shader/slang_reflection.hpp
+++ b/gfx/drivers_shader/slang_reflection.hpp
@@ -109,6 +109,7 @@ struct slang_reflection
    const std::unordered_map<std::string, slang_texture_semantic_map> *texture_semantic_map = nullptr;
    const std::unordered_map<std::string, slang_texture_semantic_map> *texture_semantic_uniform_map = nullptr;
    const std::unordered_map<std::string, slang_semantic> *semantic_map = nullptr;
+   unsigned pass_number = 0;
 };
 
 bool slang_reflect_spirv(const std::vector<uint32_t> &vertex,