if vertex data per frame (number of vertices * storage required after vertex shader) exceeds the internal buffers allocated by the driver, the scene has to be 「split」 which costs performance.
如果每帧的顶点数据(在顶点着色之后所需的顶点*空间的数目)超过了驱动分配的内部缓存,屏幕将不得不进行分屏,这将消耗性能。
with the variables in place, loading the vertex data into the appropriate structures is performed by the initialize_vertices function.
变量就绪后,initialize_vertices函数将把vertex数据装入相应结构。
vertices are read from the vertex data stream and are sequentially processed by the shader function.
从顶点数据流中读出顶点后,就由着色器函数来对其进行处理。
after a call to clear() erases the background, you draw the cube by using the vertex data and triangles created in init().
调用clear()清除背景后,即可通过init()中创建的顶点数据和三角形绘制对象。
the use of vertex data from the graphics pipeline to define the search area substantially reduces the amount of searching necessary to generate motion vectors and perform data compression.
使用图形流水线中的顶点数据来定义搜索区极大地减少了产生运动矢量和执行数据压缩所必需的搜索量。
if you are porting a left-handed modeling application where the z-axis points up, you must do a rotation on all the vertex data in addition to the previous steps.
如果你正在移植z轴指向上的左手系建模应用程序,你就必须将所有的顶点数据做上述的处理。