Added hdr externs to stb-image.

modules/stb-image/stb-image.monkey2

@@ -21,4 +21,20 @@ Function stbi_load:UByte Ptr( filename:CString,x:Int Ptr,y:Int Ptr,comp:Int Ptr,
 Function stbi_load_from_memory:UByte Ptr( buffer:UByte Ptr,len:Int,x:Int Ptr,y:Int Ptr,comp:Int Ptr,req_comp:Int )
 Function stbi_load_from_callbacks:UByte Ptr( clbk:stbi_io_callbacks Ptr,user:Void Ptr,x:Int Ptr,y:Int Ptr,comp:Int Ptr,req_comp:Int )
 Function stbi_load_from_file:UByte Ptr( f:libc.FILE Ptr,x:Int Ptr,y:Int Ptr,comp:Int Ptr,req_comp:Int )
+Function stbi_loadf:Float Ptr( filename:CString,x:Int Ptr,y:Int Ptr,comp:Int Ptr,req_comp:Int )
+Function stbi_loadf_from_memory:Float Ptr( buffer:UByte Ptr,len:Int,x:Int Ptr,y:Int Ptr,comp:Int Ptr,req_comp:Int )
+Function stbi_loadf_from_callbacks:Float Ptr( clbk:stbi_io_callbacks Ptr,user:Void Ptr,x:Int Ptr,y:Int Ptr,comp:Int Ptr,req_comp:Int )
+Function stbi_loadf_from_file:float Ptr( f:libc.FILE Ptr,x:Int Ptr,y:Int Ptr,comp:Int Ptr,req_comp:Int )
+	
 Function stbi_image_free( data:Void Ptr )
+
+Function stbi_is_hdr_from_callbacks:Int( clbk:stbi_io_callbacks Ptr,user:Void Ptr )
+Function stbi_is_hdr_from_memory:Int( buffer:UByte Ptr,len:Int )
+Function stbi_is_hdr:Int( filename:CString )
+Function stbi_is_hdr_from_file:Int( f:libc.FILE Ptr )
+
+Function stbi_ldr_to_hdr_gamma( gamma:Float )
+Function stbi_ldr_to_hdr_scale( scale:Float )
+Function stbi_hdr_to_ldr_gamma( gamma:Float )
+Function stbi_hdr_to_ldr_scale( scale:Float )
+