resource: user should not be responsible for checking non-existent files

src/resource/compile_options.cpp

@@ -146,7 +146,8 @@ void CompileOptions::get_temporary_path(const char* suffix, DynamicString& abs)
 
 void CompileOptions::delete_file(const char* path)
 {
-	_data_filesystem.delete_file(path);
+	if (_data_filesystem.exists(path))
+		_data_filesystem.delete_file(path);
 }
 
 void CompileOptions::write(const void* data, u32 size)

src/resource/shader_resource.cpp

@@ -1059,26 +1059,11 @@ namespace shader_resource_internal
 
 		void delete_temp_files()
 		{
-			const char* vs_source_path   = _vs_source_path.c_str();
-			const char* fs_source_path   = _fs_source_path.c_str();
-			const char* varying_path     = _varying_path.c_str();
-			const char* vs_compiled_path = _vs_compiled_path.c_str();
-			const char* fs_compiled_path = _fs_compiled_path.c_str();
-
-			if (_opts.file_exists(vs_source_path))
-				_opts.delete_file(vs_source_path);
-
-			if (_opts.file_exists(fs_source_path))
-				_opts.delete_file(fs_source_path);
-
-			if (_opts.file_exists(varying_path))
-				_opts.delete_file(varying_path);
-
-			if (_opts.file_exists(vs_compiled_path))
-				_opts.delete_file(vs_compiled_path);
-
-			if (_opts.file_exists(fs_compiled_path))
-				_opts.delete_file(fs_compiled_path);
+			_opts.delete_file(_vs_source_path.c_str());
+			_opts.delete_file(_fs_source_path.c_str());
+			_opts.delete_file(_varying_path.c_str());
+			_opts.delete_file(_vs_compiled_path.c_str());
+			_opts.delete_file(_fs_compiled_path.c_str());
 		}
 
 		void compile()