diff --git a/libs/vkd3d-shader/hlsl_codegen.c b/libs/vkd3d-shader/hlsl_codegen.c
index 42ede1c1..e0fd2e2b 100644
--- a/libs/vkd3d-shader/hlsl_codegen.c
+++ b/libs/vkd3d-shader/hlsl_codegen.c
@@ -5168,7 +5168,8 @@ uint32_t allocate_temp_registers(struct hlsl_ctx *ctx, struct hlsl_ir_function_d
     return allocator.reg_count;
 }
 
-static void allocate_semantic_register(struct hlsl_ctx *ctx, struct hlsl_ir_var *var, unsigned int *counter, bool output)
+static void allocate_semantic_register(struct hlsl_ctx *ctx, struct hlsl_ir_var *var,
+        unsigned int *counter, bool output, bool is_patch_constant_func)
 {
     static const char *const shader_names[] =
     {
@@ -5217,8 +5218,8 @@ static void allocate_semantic_register(struct hlsl_ctx *ctx, struct hlsl_ir_var
         enum vkd3d_shader_sysval_semantic semantic;
         bool has_idx;
 
-        if (!sm4_sysval_semantic_from_semantic_name(&semantic, &version,
-                ctx->semantic_compat_mapping, var->semantic.name, output))
+        if (!sm4_sysval_semantic_from_semantic_name(&semantic, &version, ctx->semantic_compat_mapping,
+                ctx->domain, var->semantic.name, var->semantic.index, output, is_patch_constant_func))
         {
             hlsl_error(ctx, &var->loc, VKD3D_SHADER_ERROR_HLSL_INVALID_SEMANTIC,
                     "Invalid semantic '%s'.", var->semantic.name);
@@ -5247,15 +5248,16 @@ static void allocate_semantic_register(struct hlsl_ctx *ctx, struct hlsl_ir_var
 
 static void allocate_semantic_registers(struct hlsl_ctx *ctx, struct hlsl_ir_function_decl *entry_func)
 {
+    bool is_patch_constant_func = entry_func == ctx->patch_constant_func;
     unsigned int input_counter = 0, output_counter = 0;
     struct hlsl_ir_var *var;
 
     LIST_FOR_EACH_ENTRY(var, &entry_func->extern_vars, struct hlsl_ir_var, extern_entry)
     {
         if (var->is_input_semantic)
-            allocate_semantic_register(ctx, var, &input_counter, false);
+            allocate_semantic_register(ctx, var, &input_counter, false, is_patch_constant_func);
         if (var->is_output_semantic)
-            allocate_semantic_register(ctx, var, &output_counter, true);
+            allocate_semantic_register(ctx, var, &output_counter, true, is_patch_constant_func);
     }
 }
 
@@ -6301,7 +6303,7 @@ static void generate_vsir_signature_entry(struct hlsl_ctx *ctx,
         bool has_idx, ret;
 
         ret = sm4_sysval_semantic_from_semantic_name(&sysval, &program->shader_version,
-                ctx->semantic_compat_mapping, var->semantic.name, output);
+                ctx->semantic_compat_mapping, ctx->domain, var->semantic.name, var->semantic.index, output, false);
         VKD3D_ASSERT(ret);
         if (sysval == ~0u)
             return;
@@ -7749,10 +7751,18 @@ static void process_entry_function(struct hlsl_ctx *ctx,
     {
         var = entry_func->parameters.vars[i];
 
-        if (hlsl_type_is_resource(var->data_type) || (var->storage_modifiers & HLSL_STORAGE_UNIFORM))
+        if (hlsl_type_is_resource(var->data_type))
         {
             prepend_uniform_copy(ctx, body, var);
         }
+        else if ((var->storage_modifiers & HLSL_STORAGE_UNIFORM))
+        {
+            if (ctx->profile->type == VKD3D_SHADER_TYPE_HULL && entry_func == ctx->patch_constant_func)
+                hlsl_error(ctx, &var->loc, VKD3D_SHADER_ERROR_HLSL_INVALID_MODIFIER,
+                        "Patch constant function parameter \"%s\" cannot be uniform.", var->name);
+            else
+                prepend_uniform_copy(ctx, body, var);
+        }
         else
         {
             if (hlsl_get_multiarray_element_type(var->data_type)->class != HLSL_CLASS_STRUCT
@@ -7891,6 +7901,13 @@ int hlsl_emit_bytecode(struct hlsl_ctx *ctx, struct hlsl_ir_function_decl *entry
     if (ctx->result)
         return ctx->result;
 
+    if (profile->type == VKD3D_SHADER_TYPE_HULL)
+    {
+        process_entry_function(ctx, &global_uniform_block, ctx->patch_constant_func);
+        if (ctx->result)
+            return ctx->result;
+    }
+
     hlsl_block_cleanup(&global_uniform_block);
 
     if (profile->major_version < 4)
diff --git a/libs/vkd3d-shader/tpf.c b/libs/vkd3d-shader/tpf.c
index ffbc1bb6..e1002975 100644
--- a/libs/vkd3d-shader/tpf.c
+++ b/libs/vkd3d-shader/tpf.c
@@ -3047,9 +3047,57 @@ bool sm4_register_from_semantic_name(const struct vkd3d_shader_version *version,
     return false;
 }
 
+static bool get_tessfactor_sysval_semantic(enum vkd3d_shader_sysval_semantic *semantic,
+        enum vkd3d_tessellator_domain domain, uint32_t index)
+{
+    switch (domain)
+    {
+        case VKD3D_TESSELLATOR_DOMAIN_LINE:
+            if (index == 0)
+                *semantic = VKD3D_SHADER_SV_TESS_FACTOR_LINEDEN;
+            else if (index == 1)
+                *semantic = VKD3D_SHADER_SV_TESS_FACTOR_LINEDET;
+            else
+                return false;
+            return true;
+
+        case VKD3D_TESSELLATOR_DOMAIN_TRIANGLE:
+            *semantic = VKD3D_SHADER_SV_TESS_FACTOR_TRIEDGE;
+            return index < 3;
+
+        case VKD3D_TESSELLATOR_DOMAIN_QUAD:
+            *semantic = VKD3D_SHADER_SV_TESS_FACTOR_QUADEDGE;
+            return index < 4;
+
+        default:
+            vkd3d_unreachable();
+    }
+}
+
+static bool get_insidetessfactor_sysval_semantic(enum vkd3d_shader_sysval_semantic *semantic,
+        enum vkd3d_tessellator_domain domain, uint32_t index)
+{
+    switch (domain)
+    {
+        case VKD3D_TESSELLATOR_DOMAIN_LINE:
+            return false;
+
+        case VKD3D_TESSELLATOR_DOMAIN_TRIANGLE:
+            *semantic = VKD3D_SHADER_SV_TESS_FACTOR_TRIINT;
+            return index == 0;
+
+        case VKD3D_TESSELLATOR_DOMAIN_QUAD:
+            *semantic = VKD3D_SHADER_SV_TESS_FACTOR_QUADINT;
+            return index < 2;
+
+        default:
+            vkd3d_unreachable();
+    }
+}
+
 bool sm4_sysval_semantic_from_semantic_name(enum vkd3d_shader_sysval_semantic *sysval_semantic,
-        const struct vkd3d_shader_version *version,
-        bool semantic_compat_mapping, const char *semantic_name, bool output)
+        const struct vkd3d_shader_version *version, bool semantic_compat_mapping, enum vkd3d_tessellator_domain domain,
+        const char *semantic_name, unsigned int semantic_idx, bool output, bool is_patch_constant_func)
 {
     unsigned int i;
 
@@ -3105,6 +3153,32 @@ bool sm4_sysval_semantic_from_semantic_name(enum vkd3d_shader_sysval_semantic *s
     };
     bool needs_compat_mapping = ascii_strncasecmp(semantic_name, "sv_", 3);
 
+    if (is_patch_constant_func)
+    {
+        if (output)
+        {
+            if (!ascii_strcasecmp(semantic_name, "sv_tessfactor"))
+                return get_tessfactor_sysval_semantic(sysval_semantic, domain, semantic_idx);
+            if (!ascii_strcasecmp(semantic_name, "sv_insidetessfactor"))
+                return get_insidetessfactor_sysval_semantic(sysval_semantic, domain, semantic_idx);
+            if (!ascii_strcasecmp(semantic_name, "sv_position"))
+            {
+                *sysval_semantic = VKD3D_SHADER_SV_NONE;
+                return true;
+            }
+        }
+        else
+        {
+            if (!ascii_strcasecmp(semantic_name, "sv_primitiveid")
+                    || !ascii_strcasecmp(semantic_name, "sv_position"))
+            {
+                *sysval_semantic = ~0u;
+                return true;
+            }
+            return false;
+        }
+    }
+
     for (i = 0; i < ARRAY_SIZE(semantics); ++i)
     {
         if (!ascii_strcasecmp(semantic_name, semantics[i].name)
@@ -4757,8 +4831,8 @@ static void write_sm4_dcl_semantic(const struct tpf_compiler *tpf, const struct
     if (shader_sm4_is_scalar_register(&instr.dsts[0].reg))
         instr.dsts[0].reg.dimension = VSIR_DIMENSION_SCALAR;
 
-    sm4_sysval_semantic_from_semantic_name(&semantic, version,
-            tpf->ctx->semantic_compat_mapping, var->semantic.name, output);
+    sm4_sysval_semantic_from_semantic_name(&semantic, version, tpf->ctx->semantic_compat_mapping,
+            tpf->ctx->domain, var->semantic.name, var->semantic.index, output, false);
     if (semantic == ~0u)
         semantic = VKD3D_SHADER_SV_NONE;
 
diff --git a/libs/vkd3d-shader/vkd3d_shader_private.h b/libs/vkd3d-shader/vkd3d_shader_private.h
index 4808eea1..3c367c08 100644
--- a/libs/vkd3d-shader/vkd3d_shader_private.h
+++ b/libs/vkd3d-shader/vkd3d_shader_private.h
@@ -1609,8 +1609,8 @@ bool sm1_usage_from_semantic_name(const char *semantic_name,
 bool sm4_register_from_semantic_name(const struct vkd3d_shader_version *version,
         const char *semantic_name, bool output, enum vkd3d_shader_register_type *type, bool *has_idx);
 bool sm4_sysval_semantic_from_semantic_name(enum vkd3d_shader_sysval_semantic *sysval_semantic,
-        const struct vkd3d_shader_version *version,
-        bool semantic_compat_mapping, const char *semantic_name, bool output);
+        const struct vkd3d_shader_version *version, bool semantic_compat_mapping, enum vkd3d_tessellator_domain domain,
+        const char *semantic_name, unsigned int semantic_idx, bool output, bool is_patch_constant_func);
 
 int d3dbc_parse(const struct vkd3d_shader_compile_info *compile_info, uint64_t config_flags,
         struct vkd3d_shader_message_context *message_context, struct vsir_program *program);
diff --git a/tests/hlsl/hull-shader-syntax.shader_test b/tests/hlsl/hull-shader-syntax.shader_test
index ebf11cb1..d860ff62 100644
--- a/tests/hlsl/hull-shader-syntax.shader_test
+++ b/tests/hlsl/hull-shader-syntax.shader_test
@@ -84,7 +84,7 @@ float4 main() : POSITION
     return 0;
 }
 
-[hull shader fail todo]
+[hull shader fail]
 struct patch_constant_data
 {
     float edges[2] : SV_TessFactor;
@@ -140,7 +140,7 @@ float4 main(uniform float4 b) : POSITION
 }
 
 % Patch constant function can't have uniform parameters.
-[hull shader fail todo]
+[hull shader fail]
 struct patch_constant_data
 {
     float edges[2] : SV_TessFactor;