Artists could consider Vertex Color = daytime, Vertex Illumination = nighttime.īelow are various demonstrations of vertex color and illumination channels.īelow video demonstrates the effects of not prelighting game models for GTA:SA. Between these timeframes, the two channels blends into eachother, creating a realistic daytime and nighttime visualization of the map. Remembering which channel is used for what can be a little troubling, on top of the many other things. Vertex illumination is displayed outside that timeframe, that is, between 20:00 and 06:00. Vertex color is displayed around 06:00 - 20:00.
Game models use two vertex channels for lighting. Working with several VertexPaint modifiers In the days that the game was developed, vertex colors was a more sustainable rendering method over other options.ĭifferent model lighting depending on game time In GTA:SA the only light rendering is done by vertex colors and 2DFX. This is due to some game engines not supporting Ray Tracing or other rendering, or they simply prefer using vertex colors over per-pixel lighting. This may result in very poor results if the geometry is not subdivided at the places it is painted at.īesides texture blending, vertex colors are also widely used in games for fake lighting baked into models.
Vertex Color works almost the same way, however it renders per vertex and not per pixel unlike shaders do. As result, game developers may move their aim towards Vertex Alpha and Color rather than geometry shaders. This however may use up significantly more resources than its alternatives in some cases. This guide intends to teach 3ds Max users the basics and more advanced ways of working with Vertex Colors, in order to achieve lighting solutions for enhanced quality of game models, or blend several textures together using Vertex alpha.Ī lot of games utilises vertex colors to accomplish lighting or blending effects, which usually impacts the performance less than model shaders. Types of shaders such as Texture Splatting are pixel based techniques for rendering multiple textures onto a model, where each texture e.g earth, grass, gravel, has their own color on the splat map.
0 kommentar(er)
