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Effect Constructor (GraphicsDevice, String, CompilerOptions, EffectPool)

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Initializes a new instance of this class from a compiled effect, specifying the compiled effect by file name.

Namespace: Microsoft.Xna.Framework.Graphics
Assembly: Microsoft.Xna.Framework (in microsoft.xna.framework.dll)

Syntax

public Effect (
         GraphicsDevice graphicsDevice,
         string effectCodeFile,
         CompilerOptions options,
         EffectPool pool
)

Parameters

  • graphicsDevice
    The graphics device that will create the effect.
  • effectCodeFile
    A file containing a compiled byte code.
  • options
    Compilation optimization options.
  • pool
    Specifies a pool of resources to share between effects.

Exceptions

Exception type Condition
ArgumentNullException graphicsDevice is null. The graphics device must not be null when creating new resources.
ObjectDisposedException Effect was called after pool was disposed.
InvalidOperationException
  • The code contained in effectCodeFile is not compiled. Creating an effect requires that the shader code has been compiled.
  • The code contained in effectCodeFile does not have a size that is a multiple of four bytes. Effect and shader code must have a size that is a multiple of four bytes.
  • Unable to create the effect resource on the graphics device.

Tip

In most cases, it is preferrable to initialize a new instance of an effect using the ContentManager.Load<Effect> method rather than using the Effect constructors. For an example of initializing an effect with this method, please see How to: Create and Apply Custom Effects.

Remarks

Obtaining the compiled byte code for effectCodeFile is a two-part process. First, the effect must be compiled using the static methods Effect.CompileEffectFromFile or Effect.CompileEffectFromSource, which returns an instance of CompiledEffect. CompiledEffect.GetEffectCode returns the compiled byte code from the compiled effect.

See Also

Tasks

How to: Create and Apply Custom Effects

Reference

Effect.CompileEffectFromFile Method
Effect.CompileEffectFromSource Method
Effect Class
Effect Members
Microsoft.Xna.Framework.Graphics Namespace

Platforms

Xbox 360, Windows XP SP2, Windows Vista