根据《Parallax Occlusion Mapping for detailed surface rendering》,我们按照view角度修改层数slicesNum。 // height map should 1:high, 0:low.float2SteepParallaxMapping(TEXTURE2D_PARAM(heightMap,sampler_heightMap),float2inddx,float2inddy,intchannel,float2uv,float3viewDirTS,float2offsetScale,floatslicesMin,f...
Steep Parallax Mapping: McGuire, Morgan, and Max McGuire. “Steep parallax mapping.”I3D 2005 Poster(2005): 23-24. POM: Tatarchuk, Natalya. “Dynamic parallax occlusion mapping with approximate soft shadows.”Proceedings of the 2006 symposium on Interactive 3D graphics and games. ACM, 2006. Re...
ParallaxMapping是针对NormalMapping的改进,利用HeightMap进行了近似的TextureOffset。而ReliefMapping是精确的TextureOffset,所以表现力上应该是最完美的。 btw:都是些很简单的技术,不过不知道啥时候才能在我们的国产游戏中见到。:(
视差贴图映射(Parallax mapping) [Kaneko et al. 2001] 使用逐像素深度的贴图扩张的技术。在这个方法里面,视线方向的贴图坐标根据深度值进行了近似的变化。这个技术在非常小的计算消耗的前提下能够产生很有意思 的结果,但是只能够产生噪声一样无规律的凹凸,因此当视点移动的时候,表面显示便会根据视点动态变化,很难看。
parallax mappingrelief mappingterrain renderingurban environmentsTerrain models typically contain huge amount of data so they are very time consuming for visualization purposes. This especially comes to the forefront when urban environments are included. The main compromise in representation of the complex ...
3d, parallax, bump, relief创建自 whitelynx 内2024-10-27 Simple relief mapping example with pseudo-"lighting" effect (deeper areas are darkened). Based on https://www.shadertoy.com/view/XsKGRt, but adding a stone texture, and with automatic camera movement instead of movement based on the ...
Relief Mapping 2006-01-03 22:43 − http://fabio.policarpo.nom.br/docs/ReliefMapping_I3D2005.pdf转的晚了点。:D简而言之,NormalMapping只是扰动Normal,并未进行TextureOffset,所以表现剧烈凸凹感的时候效果并不如人意。ParallaxMapping是... Pointer 5 1114 学习理论之正则化(Regularization)与模型选择...
上次介绍了一下法线贴图,这次这次介绍一下进阶版--视差贴图(Parallax Mapping)以及视差贴图的极限优化版--浮雕贴图(Relief Mapping) 首先在这里提一下历史。1978年的时候,大神James Blinn(就是那位优化了Phong光照模型,将其改为Blinn-Phong的牛人)在"Simulation of Wrinkled Surfaces"中提出了凹凸贴图(Bump mapping),...
mapping is not as effective for adding 3-D details to a surface. When seen by a moving observer, the absence of parallax reveals the flatness of the surface. Such flatness is also evidenced when the surface is observed from an oblique angle (Figure 1). ...
In addition, the parallax in the stereo pairs allows a derivation of quantitative height information. Some of the derived height values are, however, incorrect. This was due to inaccuracies in the camera technology and the use of photogrammetric software that was not designed principally to process...