public SpriteBatcher(GraphicsDevice graphicsDevice, int maxBatchSize)
{
this.graphicsDevice = graphicsDevice;
this.maxBatchSize = maxBatchSize;
spriteList = new List <SpriteInfo>();
fontVertex = new FontVertex[maxBatchSize];
renderBatches = new List <RenderBatchInfo>();
vertexBuffer = new VertexBuffer(graphicsDevice, BufferUsage.Dynamic);
vertexBuffer.SetData(fontVertex);
sampler = new LeaSamplerState();
sampler.GenerateSamplers(graphicsDevice);
CreateEffect();
CreateBlendSates();
effect.SetVariable("textureAtlasResWidthHeight", "startUp", 512, ShaderType.GeometryShader);
effect.SetSampler(sampler, 0, ShaderType.PixelShader);
}