我正在用最新的XNA (c#)编写一款2D游戏。我正在对旧代码进行一些修改，并刚刚放回按钮以更改分辨率。然而，在切换全屏模式或更改窗口大小/分辨率后，屏幕永远是黑色的(我的清晰屏幕呼叫的颜色)，尽管游戏仍然运行，因为我可以通过按键退出它。这在我以前的版本中没有发生-它都工作得很好-但是我能找到的相关代码没有区别。然而，我确实重做了我的图形加载，使用我自己的纹理加载器而不是内容加载器-这可能是问题吗?
如果没有其他选择，是否有一种简单的方法使游戏重新启动，因为图像是ok的，并在重新启动后的选定格式?
我的代码是: public override void Click()
{
base.Click();
Settings.Default.screenWidth = resolution[0];
Settings.Default.screenHeight = resolution[1];
Settings.Default.Save();
Variables.screenWidth = Settings.Default.screenWidth;
Variables.screenHeight = Settings.Default.screenHeight;
Game1.graphics.PreferredBackBufferWidth = Variables.screenWidth;
Game1.graphics.PreferredBackBufferHeight = Variables.screenHeight;
Game1.graphics.ApplyChanges();
}
谢谢!
编辑:我的纹理加载代码-加载包含在enum中的名称的所有文件texture2d ..
public static void LoadAll(string subFolder)
{
List<string> s = Directory.GetFiles(path + "\" + subFolder, "*.png", SearchOption.AllDirectories).ToList<string>();
foreach (string S in s)
{
if (Enum.IsDefined(typeof(T), Path.GetFileNameWithoutExtension(S)))
{
FileStream stream = new FileStream(S, FileMode.Open);
Texture2D t = Texture2D.FromStream(Game1.graphics.GraphicsDevice, stream);
RenderTarget2D result = null;
//Setup a render target to hold our final texture which will have premulitplied alpha values
result = new RenderTarget2D(Game1.graphics.GraphicsDevice, t.Width, t.Height);
Game1.graphics.GraphicsDevice.SetRenderTarget(result);
Game1.graphics.GraphicsDevice.Clear(Microsoft.Xna.Framework.Color.Black);
//Multiply each color by the source alpha, and write in just the color values into the final texture
BlendState blendColor = new BlendState();
blendColor.ColorWriteChannels = ColorWriteChannels.Red | ColorWriteChannels.Green | ColorWriteChannels.Blue;
blendColor.AlphaDestinationBlend = Blend.Zero;
blendColor.ColorDestinationBlend = Blend.Zero;
blendColor.AlphaSourceBlend = Blend.SourceAlpha;
blendColor.ColorSourceBlend = Blend.SourceAlpha;
Game1.spriteBatch.Begin(SpriteSortMode.Immediate, blendColor);
Game1.spriteBatch.Draw(t, t.Bounds, Microsoft.Xna.Framework.Color.White);
Game1.spriteBatch.End();
//Now copy over the alpha values from the PNG source texture to the final one, without multiplying them
BlendState blendAlpha = new BlendState();
blendAlpha.ColorWriteChannels = ColorWriteChannels.Alpha;
blendAlpha.AlphaDestinationBlend = Blend.Zero;
blendAlpha.ColorDestinationBlend = Blend.Zero;
blendAlpha.AlphaSourceBlend = Blend.One;
blendAlpha.ColorSourceBlend = Blend.One;
Game1.spriteBatch.Begin(SpriteSortMode.Immediate, blendAlpha);
Game1.spriteBatch.Draw(t, t.Bounds, Microsoft.Xna.Framework.Color.White);
Game1.spriteBatch.End();
//Release the GPU back to drawing to the screen
Game1.graphics.GraphicsDevice.SetRenderTarget(null);
t = result;
textureDictionary.Add(Path.GetFileNameWithoutExtension(S), t);
}
// else
// Console.WriteLine("Did not load -- " + Path.GetFileNameWithoutExtension(S) + " -- (add to enum to enable loading)");
}
}
编辑:以下建议的工作代码-可能不是最有效的，但它工作!
public static void LoadAll(string subFolder)
{
List<string> s = Directory.GetFiles(path + "\" + subFolder, "*.png", SearchOption.AllDirectories).ToList<string>();
foreach (string S in s)
{
if (Enum.IsDefined(typeof(T), Path.GetFileNameWithoutExtension(S)))
{
FileStream stream = new FileStream(S, FileMode.Open);
Texture2D t = Texture2D.FromStream(Game1.graphics.GraphicsDevice, stream);
RenderTarget2D result = null;
Texture2D resultTexture;
//Setup a render target to hold our final texture which will have premulitplied alpha values
result = new RenderTarget2D(Game1.graphics.GraphicsDevice, t.Width, t.Height);
Game1.graphics.GraphicsDevice.SetRenderTarget(result);
Game1.graphics.GraphicsDevice.Clear(Microsoft.Xna.Framework.Color.Black);
//Multiply each color by the source alpha, and write in just the color values into the final texture
BlendState blendColor = new BlendState();
blendColor.ColorWriteChannels = ColorWriteChannels.Red | ColorWriteChannels.Green | ColorWriteChannels.Blue;
blendColor.AlphaDestinationBlend = Blend.Zero;
blendColor.ColorDestinationBlend = Blend.Zero;
blendColor.AlphaSourceBlend = Blend.SourceAlpha;
blendColor.ColorSourceBlend = Blend.SourceAlpha;
Game1.spriteBatch.Begin(SpriteSortMode.Immediate, blendColor);
Game1.spriteBatch.Draw(t, t.Bounds, Microsoft.Xna.Framework.Color.White);
Game1.spriteBatch.End();
//Now copy over the alpha values from the PNG source texture to the final one, without multiplying them
BlendState blendAlpha = new BlendState();
blendAlpha.ColorWriteChannels = ColorWriteChannels.Alpha;
blendAlpha.AlphaDestinationBlend = Blend.Zero;
blendAlpha.ColorDestinationBlend = Blend.Zero;
blendAlpha.AlphaSourceBlend = Blend.One;
blendAlpha.ColorSourceBlend = Blend.One;
Game1.spriteBatch.Begin(SpriteSortMode.Immediate, blendAlpha);
Game1.spriteBatch.Draw(t, t.Bounds, Microsoft.Xna.Framework.Color.White);
Game1.spriteBatch.End();
//Release the GPU back to drawing to the screen
Game1.graphics.GraphicsDevice.SetRenderTarget(null);
resultTexture = new Texture2D(Game1.graphics.GraphicsDevice, result.Width, result.Height);
Color[] data = new Color[result.Height * result.Width];
Color[] textureColor = new Color[result.Height * result.Width];
result.GetData<Color>(textureColor);
resultTexture.SetData(textureColor);
textureDictionary.Add(Path.GetFileNameWithoutExtension(S), resultTexture);
}
// else
// Console.WriteLine("Did not load -- " + Path.GetFileNameWithoutExtension(S) + " -- (add to enum to enable loading)");
}
}
根据您更新的代码，您正在复制纹理到渲染目标(RenderTarget2D)。
ContentLost事件并设置IsContentLost -然后您需要自己重置其内容!有几个解决方案:您可以简单地响应ContentLost并刷新数据。
我更喜欢在加载时使用GetData和SetData来将渲染目标的内容复制到常规的Texture2D中，因为这"只是工作"。虽然对于简单的情况，如切换纹理使用预乘法alpha，我更喜欢把所有东西都放在CPU上。
我有一个非常详细的答案关于RenderTarget2D使用固定纹理在这里。它包括直接在CPU上执行预乘法的代码。
虽然在您的情况下，我会尝试使用内容管理器。可以让它处理一个目录中的所有文件，然后动态加载它们。