关键词: 图形处理器, 多目标渲染目标缓存, 深度剥离, 桶排序

Abstract: This paper proposes two visualization methods of multi-layer isosurface which extract from electromagnetism environment for the different requirements.Multi-layer Bogus Taxis，boosting up the borderline using Per-Pixel Shading，improves the performance of rendering but the quality is low.Improved Depth Peeling solves the problem of non-uniform depth distributing of multi-fragment through using Slicemap technology.The state-of-art of improved Depth Peeling gains great improvement for large scenes with high complexity.The algorithm gains a great balance between performance and quality，and is capable to capture up to multi-fragments in a single geometry pass with great speed improvement and faithful results.

Key words: Graphic Processing Unit（GPU）, multiple render target, depth peeling, bucket sort