diff --git a/libs/vkd3d-shader/glsl.c b/libs/vkd3d-shader/glsl.c
index f1012d06..3e8dd2c4 100644
--- a/libs/vkd3d-shader/glsl.c
+++ b/libs/vkd3d-shader/glsl.c
@@ -89,35 +89,39 @@ static void vkd3d_glsl_handle_instruction(struct vkd3d_glsl_generator *generator
     }
 }
 
-static int vkd3d_glsl_generator_generate(struct vkd3d_glsl_generator *generator, struct vkd3d_shader_code *out)
+static int vkd3d_glsl_generator_generate(struct vkd3d_glsl_generator *gen, struct vkd3d_shader_code *out)
 {
-    const struct vkd3d_shader_instruction_array *instructions = &generator->program->instructions;
+    const struct vkd3d_shader_instruction_array *instructions = &gen->program->instructions;
+    struct vkd3d_string_buffer *buffer = &gen->buffer;
     unsigned int i;
     void *code;
 
     ERR("Generating a GLSL shader. This is unsupported; you get to keep all the pieces if it breaks.\n");
 
-    vkd3d_string_buffer_printf(&generator->buffer, "#version 440\n\n");
-    vkd3d_string_buffer_printf(&generator->buffer, "void main()\n{\n");
+    vkd3d_string_buffer_printf(buffer, "#version 440\n\n");
 
-    ++generator->indent;
+    vkd3d_string_buffer_printf(buffer, "/* Generated by %s. */\n\n", vkd3d_shader_get_version(NULL, NULL));
+
+    vkd3d_string_buffer_printf(buffer, "void main()\n{\n");
+
+    ++gen->indent;
     for (i = 0; i < instructions->count; ++i)
     {
-        vkd3d_glsl_handle_instruction(generator, &instructions->elements[i]);
+        vkd3d_glsl_handle_instruction(gen, &instructions->elements[i]);
     }
 
-    vkd3d_string_buffer_printf(&generator->buffer, "}\n");
+    vkd3d_string_buffer_printf(buffer, "}\n");
 
     if (TRACE_ON())
-        vkd3d_string_buffer_trace(&generator->buffer);
+        vkd3d_string_buffer_trace(buffer);
 
-    if (generator->failed)
+    if (gen->failed)
         return VKD3D_ERROR_INVALID_SHADER;
 
-    if ((code = vkd3d_malloc(generator->buffer.buffer_size)))
+    if ((code = vkd3d_malloc(buffer->buffer_size)))
     {
-        memcpy(code, generator->buffer.buffer, generator->buffer.content_size);
-        out->size = generator->buffer.content_size;
+        memcpy(code, buffer->buffer, buffer->content_size);
+        out->size = buffer->content_size;
         out->code = code;
     }
     else return VKD3D_ERROR_OUT_OF_MEMORY;