gistfile1.cs

protected override void Draw(GameTime gameTime) {
            this.GraphicsDevice.Clear(ClearOptions.Target | ClearOptions.DepthBuffer, Color.PowderBlue, 1.0f, 0);

            effect.CurrentTechnique = effect.Techniques["Simple"];
            effect.Parameters["World"].SetValue(Matrix.CreateTranslation(new Vector3(0, 0, -20)));
            effect.Parameters["View"].SetValue(this.camera.View);
            effect.Parameters["Projection"].SetValue(this.camera.Projection);
            effect.Parameters["TextureFile"].SetValue(this.texture);

            foreach (EffectPass pass in effect.CurrentTechnique.Passes) {
                pass.Apply();
                this.GraphicsDevice.DrawUserPrimitives<VertexPositionTexture>(PrimitiveType.TriangleList, chunk.Vertices, 0, chunk.PrimitiveCount);
            }

            base.Draw(gameTime);
}