diff --git a/glslang/CInterface/glslang_c_interface.cpp b/glslang/CInterface/glslang_c_interface.cpp
index 2576ded9..d0b20b8a 100644
--- a/glslang/CInterface/glslang_c_interface.cpp
+++ b/glslang/CInterface/glslang_c_interface.cpp
@@ -396,6 +396,17 @@ GLSLANG_EXPORT void glslang_shader_set_options(glslang_shader_t* shader, int opt
     if (options & GLSLANG_SHADER_INVERT_Y) {
         shader->shader->setInvertY(true);
     }
+
+#ifdef ENABLE_HLSL
+    if (options & GLSLANG_SHADER_HLSL_IO_MAPPING) {
+        shader->shader->setHlslIoMapping(true);
+    }
+
+    if (options & GLSLANG_SHADER_HLSL_FLATTEN_UNIFORM_ARRAYS) {
+        shader->shader->setFlattenUniformArrays(true);
+    }
+
+#endif
 }
 
 GLSLANG_EXPORT void glslang_shader_set_glsl_version(glslang_shader_t* shader, int version)
@@ -422,6 +433,14 @@ GLSLANG_EXPORT void glslang_shader_set_resource_set_binding(glslang_shader_t* sh
     shader->shader->setResourceSetBinding(shader->baseResourceSetBinding);
 }
 
+GLSLANG_EXPORT void glslang_shader_add_source_text(glslang_shader_t* shader, const char* text, size_t len) {
+    shader->shader->addSourceText(text, len);
+}
+
+GLSLANG_EXPORT void glslang_shader_set_source_file(glslang_shader_t* shader, const char* file) {
+    shader->shader->setSourceFile(file);
+}
+
 GLSLANG_EXPORT const char* glslang_shader_get_preprocessed_code(glslang_shader_t* shader)
 {
     return shader->preprocessedGLSL.c_str();
diff --git a/glslang/Include/glslang_c_interface.h b/glslang/Include/glslang_c_interface.h
index c24964b3..3718ee7e 100644
--- a/glslang/Include/glslang_c_interface.h
+++ b/glslang/Include/glslang_c_interface.h
@@ -263,6 +263,8 @@ GLSLANG_EXPORT void glslang_shader_set_glsl_version(glslang_shader_t* shader, in
 GLSLANG_EXPORT void glslang_shader_set_default_uniform_block_set_and_binding(glslang_shader_t* shader, unsigned int set, unsigned int binding);
 GLSLANG_EXPORT void glslang_shader_set_default_uniform_block_name(glslang_shader_t* shader, const char *name);
 GLSLANG_EXPORT void glslang_shader_set_resource_set_binding(glslang_shader_t* shader, const char *const *bindings, unsigned int num_bindings);
+GLSLANG_EXPORT void glslang_shader_add_source_text(glslang_shader_t* shader, const char* text, size_t len);
+GLSLANG_EXPORT void glslang_shader_set_source_file(glslang_shader_t* shader, const char* file);
 GLSLANG_EXPORT int glslang_shader_preprocess(glslang_shader_t* shader, const glslang_input_t* input);
 GLSLANG_EXPORT int glslang_shader_parse(glslang_shader_t* shader, const glslang_input_t* input);
 GLSLANG_EXPORT const char* glslang_shader_get_preprocessed_code(glslang_shader_t* shader);
diff --git a/glslang/Include/glslang_c_shader_types.h b/glslang/Include/glslang_c_shader_types.h
index bccab765..bc02fb1c 100644
--- a/glslang/Include/glslang_c_shader_types.h
+++ b/glslang/Include/glslang_c_shader_types.h
@@ -212,6 +212,10 @@ typedef enum {
     GLSLANG_SHADER_AUTO_MAP_LOCATIONS = (1 << 1),
     GLSLANG_SHADER_VULKAN_RULES_RELAXED = (1 << 2),
     GLSLANG_SHADER_INVERT_Y = (1 << 3),
+#ifdef ENABLE_HLSL
+    GLSLANG_SHADER_HLSL_IO_MAPPING = (1 << 4),
+    GLSLANG_SHADER_HLSL_FLATTEN_UNIFORM_ARRAYS = (1 << 5),
+#endif
     LAST_ELEMENT_MARKER(GLSLANG_SHADER_COUNT),
 } glslang_shader_options_t;