根据Stringer Bell指出的反汇编方法,我掀起了一个小型的构建后工具来分析和检查效果。被警告,这不是很漂亮。它专为XNA 3.1设计,需要the XNA WinForms sample的ServiceContainer
和GraphicsDeviceService
类。在命令行上传递内容目录路径而不使用结尾斜杠。
class Program
{
const int maxRegisters = 256; // Sutiable for VS 2.0, not much else
static int retval = 0;
static string root;
static ContentManager content;
static void CheckFile(string path)
{
string name = path.Substring(root.Length+1, path.Length - (root.Length+1) - @".xnb".Length);
Effect effect;
try { effect = content.Load<Effect>(name); }
catch { return; } // probably not an Effect
string effectSource = effect.Disassemble(false);
int highest = -1; // highest register allocated
var matches = Regex.Matches(effectSource, @" c([0-9]+)"); // quick and dirty
foreach(Match match in matches)
{
int register = Int32.Parse(match.Groups[1].ToString());
if(register > highest)
highest = register;
}
var parameters = Regex.Matches(effectSource, @"^ *// *[a-zA-Z_0-9]+ +c([0-9]+) +([0-9]+)", RegexOptions.Multiline);
foreach(Match match in parameters)
{
int register = Int32.Parse(match.Groups[1].ToString()) + Int32.Parse(match.Groups[2].ToString()) - 1;
if(register > highest)
highest = register;
}
if(highest+1 > maxRegisters)
{
Console.WriteLine("Error: Shader \"" + name + "\" uses " + (highest+1).ToString() + " constant registers, which is TOO MANY!");
retval = 1;
}
else
{
Console.WriteLine("Shader \"" + name + "\" uses " + (highest+1).ToString() + " constant registers (OK)");
}
}
static void CheckDirectory(string path)
{
try
{
foreach(string file in Directory.GetFiles(path, @"*.xnb"))
CheckFile(file);
foreach(string dir in Directory.GetDirectories(path))
CheckDirectory(dir);
}
catch { return; } // Don't care
}
static int Main(string[] args)
{
root = args[0];
Form form = new Form(); // Dummy form for creating a graphics device
GraphicsDeviceService gds = GraphicsDeviceService.AddRef(form.Handle,
form.ClientSize.Width, form.ClientSize.Height);
ServiceContainer services = new ServiceContainer();
services.AddService<IGraphicsDeviceService>(gds);
content = new ContentManager(services, root);
CheckDirectory(root);
return retval;
}
}
好问题。自从DirectX开发人员挂在那里以后,我还会在http://forums.xna.com/forums/27.aspx上发布它。 – Stringer 2010-05-19 09:17:18
谢谢,斯金格贝尔。我按照你的建议将它发布到XNA论坛:http://forums.xna.com/forums/p/53856/326864.aspx – 2010-05-19 22:09:33
另外:如果在HLSL或编译器中没有办法做到这一点,有没有通过编程方式来计算编译着色器使用的常量寄存器的数量? (理想情况下使用XNA) – 2010-05-19 22:20:03