图2。可编程图形管线模块图。

Figure 2. The blocks of the programmable graphics pipeline.

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将传统的光线投射体绘制算法在具有可编程管线的图形处理器（GPU）上重新实现。

In this work, we implement the traditional ray-casting-based volume rendering algorithm on the programmable graphics processing unit (GPU).

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随着可编程图形硬件时代的到来，着色器替代了传统的固定渲染管线以实现更加逼真的图像效果。

With the era of programmable graphics hardware, shader replaces the traditional fixed rendering pipeline to achieve more realistic effects.

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