// 渲染流程;
private void _Render(List <IShape> shapes, List <IPosLight> lights)
{
if (!_inited || null == shapes || null == lights || _height == 0 || _width == 0)
{
return;
}
// 清屏;
_Clear();
// 按队列排序形状列表(未实现);
_SortShapeList(shapes);
// 更新view proj矩阵;
_camera.UpdateMatrixs();
// 收集顶点进行坐标变换，得到其在屏幕上的位置;
int shapeCount = shapes.Count;
for (int i = 0; i < shapeCount; ++i)
{
IShape shape = shapes[i];
if (null == shape || !shape.Enabled)
{
continue;
}
// 计算旋转位移和缩放;
Matrix4 worldMat = shape.BuildWorldMatrix();
// 合并变换;
var transformMat = worldMat * _camera.viewMatrix * _camera.projMatrix;
// 收集顶点准备进行绘制;
shape.CollectVertex(transformMat, _width, _height, _renderMode, lights, _SetPixel);
}
// 将像素点光栅化到图片上;
_Present();
}