GraphicsDevice.DrawPrimitives Method

Renders a sequence of non-indexed geometric primitives of the specified type from the current set of data input streams.

Syntax

'Declaration
Public Sub DrawPrimitives ( _
         primitiveType As PrimitiveType, _
         startVertex As Integer, _
         primitiveCount As Integer _
)

public void DrawPrimitives (
         PrimitiveType primitiveType,
         int startVertex,
         int primitiveCount
)

public:
void DrawPrimitives(
         PrimitiveType primitiveType,
         int startVertex,
         int primitiveCount
)

Parameters

• primitiveType
  Type: PrimitiveType
  Describes the type of primitive to render.
• startVertex
  Type: Int32
  Index of the first vertex to load. Beginning at startVertex, the correct number of vertices is read out of the vertex buffer.
• primitiveCount
  Type: Int32
  Number of primitives to render. The primitiveCount is the number of primitives as determined by the primitive type. If it is a line list, each primitive has two vertices. If it is a triangle list, each primitive has three vertices.

Exceptions

Exception type	Condition
ArgumentOutOfRangeException	primitiveCount is less than or equal to zero. When drawing, at least one primitive must be drawn.
InvalidOperationException	One of the following conditions is true: A valid vertex shader and pixel shader was not set before calling DrawPrimitives. Both a valid vertex shader and pixel shader (or valid effect) must be set on the device before any draw operations may be performed. The active render target and depth stencil surface do not have the same pixel size and multisampling type.

Remarks

DrawPrimitives should not be called with a single triangle at a time.

Requirements

Namespace: Microsoft.Xna.Framework.Graphics

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

See Also

Reference

GraphicsDevice Class
GraphicsDevice Members
Microsoft.Xna.Framework.Graphics Namespace

Platforms

Windows Phone