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- Path: news.production.compuserve.com!news
- From: Scott Sutherland <102677.767@CompuServe.COM>
- Newsgroups: comp.sys.amiga.graphics
- Subject: Re: IMAGINE 3.0 Lighting??
- Date: 8 Feb 1996 02:07:05 GMT
- Organization: GAMMA-METRICS
- Message-ID: <4fbls9$ble$3@mhafn.production.compuserve.com>
- References: <4f5cc4$jhd@peabody.colorado.edu>
-
- One of the follow up messages mentioned that Raytracing takes 10X long
- than scanline in Imagine. This is not always true. If you have multi
- shadow casting light sources, multiple reflective or refractive object
- other "ray tracing" like features, then it can take much longer. Howe
- in many cases, the rendering times are not too different.
-
- Before Impulse added the default Globals Size of 0,0,0 (which makes th
- universe dimensions no larger than the objects in it), raytracing coul
- take MUCH longer than scanline. In the early days of Imagine, before
- this feature, I did some side-by-side tests. When I made objects with
- maximum extent of, say, 50 units in each direction, and used the defau
- universe size of 1024 units, a simple scene took 45 seconds to render
- scanline mode and 45 MINUTES in Ray trace. When I selected all my
- objects, lights, and camera so that they just fit into the 1024 unit s
- my ray trace time dropped to 1 minute. TALK ABOUT AN UNDOCUMENTED
- FEATURE! But that problem is fixed now (as mentioned above).
-
- Just some observations from a long-time Imagine user (e.g. Silver days
-
- Scott Sutherland
- GAMMA-METRICS
-
- BTW, I am switching to REAL 3D since the last newsletter from IMPULSE
- threatened to drop the Amiga version if we "did not show enough intere
-