A struct containing sprite specific data to pack sprites.
| guid | GUID to uniquely identify the sprite in data arrays. |
| indexCount | The number of indices in the sprite geometry. |
| indexOffset | Offset of indices in the indexData from where actual indices can be fetched. |
| output | Output data of a packable sprite. |
| rect | The input TextureRect information of the source sprite. |
| texIndex | Index of the texture in textureData array. |
| vertexCount | Number of vertices in the sprite geometry. |
| vertexOffset | Offset of vertices in the vertexData from where actual vertices can be fetched. |