BillboardDecalBatch.java 文件源码

public void initialize (int size) {
    vertices = new float[size * BillboardDecal.VERTEX_SIZE];

    Mesh.VertexDataType vertexDataType = Mesh.VertexDataType.VertexArray;
    if(Gdx.gl30 != null) {
        vertexDataType = Mesh.VertexDataType.VertexBufferObjectWithVAO;
    }
    mesh = new Mesh(vertexDataType, false, size, 0, new VertexAttribute(
            VertexAttributes.Usage.Position, 3, ShaderProgram.POSITION_ATTRIBUTE), new VertexAttribute(
            VertexAttributes.Usage.ColorPacked, 4, ShaderProgram.COLOR_ATTRIBUTE), new VertexAttribute(
            VertexAttributes.Usage.Generic, 1, SIZE_ATTRIBUTE), new VertexAttribute(
            VertexAttributes.Usage.Generic, 1, ROTATION_ATTRIBUTE));
}