一种基于OpenGL的三维地景真实感绘制技术

基于三维地景真实感绘制中的纹理映射技术,提出了一种有效的纹理混合算法.应用OpenGL扩展的混合贴图技术和多重渲染技术,通过设置控制点高程和影响范围,并采用顶点索引优化显示性能方法,实现了多重地形纹理的混合映射.实践表明,采用该方法绘制的地景图像,地景丰富、真实感强.

Technology of Texture Mapping for Realistic Rendering of 3D Terrain Scene Based on OpenGL

This paper studied, in detail, the technology of texture mapping for realistic rendering of 3D terrain scene. An efficient algorithm for texture blending was presented. Through using the technology of blending mapping and multi-texturing based on Open GL extension, the blending mapping of multi-texture was realized with the index of vertex for optimization of displaying. Application showed that the method had high efficiency, and that the terrain scene was highly realistic.