Winter 2003
29.02.2004
Demo uses DX8.1 and was created for contest on web page mikrogen.
Press F1 show menu. Recommended pixel shader 1.1. Terrain, snowman and roof have per-pixel lighting.
Program 12 – Cube mapping
20.02.2004
It is environment mapping (mapping environment to mirrored surface), which uses cube map texture. Cube map contains 6 two-dimensional image, which represent environment. Demo uses vertex shader for generating texture coordinations. Cube mapping is better as sphere mapping.
Program 11 – Environment mapped bump mapping (EMBM)
20.02.2004
EMBM is mapping environment to mirror bump surface. It is advanced method of environment mapping. It isn’t computed per vertex as sphere or cube mapping, but this is computed per pixel. This uses reading from texture depended on other texture. First texture is sphere map texture, second texture is bump map texture.
Request: operator BUMPENVMAP (bump environment map) and 3 texture units for multitexture.
Program 10 – DOT3 bump mapping
20.02.2004
Dot Product 3 Bump Mapping is lighting surface per pixel. It uses operator dot product. Lighting is computed with equestion:
color = ambient x Texture + (N.L)Texture + (N.H)^SpecExp x SpecularColor.
Program loads 3ds file and uses vertex shader for compute L and H vectors. It is similar to OpenGL program 24.
Request: multitexture and operator DOTPRODUCT3.
source code and executable – 930kB
Program 29 – Many point lights
10.02.2004
I use vertex program for drawing object lighting with 17 point lights.
Reques: GL_ARB_vertex_program
Program 8 – Many point lights
10.02.2004
I use vertex shader for drawing object lighting with 17 point lights.
