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DrawableGameComponent.Draw Method

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Called when the DrawableGameComponent needs to be drawn. Override this method with component-specific drawing code.

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

Syntax

public virtual void Draw (
         GameTime gameTime
)

Parameters

  • gameTime
    Time passed since the last call to Draw.

Remarks

Warning

In the method of an Xbox 360 game, vertex buffers, index buffers, and textures should not be written using SetData when they are intended to be used for rendering. This condition may lead to graphics corruption or crashes. To avoid this potential issue, use DrawUserPrimitives or DrawUserIndexedPrimitives as the preferred alternative to VertexBuffer.SetData for dynamic vertex generation.

This is because, in cases where the size of the back buffer and depth stencil buffer exceed the size of the Xbox 360 10 MB of embedded memory (EDRAM), predicated tiling is utilized on this platform to compensate for the additional memory requirements. Predicated tiling is a process by which scene rendering is performed multiple times on subsections of the final render target dimensions.

When predicated tiling has been triggered, the drawing commands contained in the function are not submitted until Present is called. (Note that implicitly calls Present at the end of this method.) In this case, these resources are not available for modification until the GPU is finished with presenting the entire frame.

See Also

Concepts

Predicated Tiling

Reference

DrawableGameComponent Class
DrawableGameComponent Members
Microsoft.Xna.Framework Namespace

Platforms

Xbox 360, Windows XP SP2, Windows Vista