giuliojiang wrote:I have to add a sun-only lamp to have good shadows.
Speaking of which, it is often rather tedious to properly align the sun lamp in your scene to match the HDR.
(too bad one cannot preview the hemi in Blender to manually adjust the sun position in realtime)
You probably have noticed the little .ibl file that comes with some of the sIBL from HDRLabs...in some of them, there are flat coordinates for the sun (relative to the flat HDR). it is in a [Sun]
section, and they are called SUNu
Anyone fancy doing a little math to transform that into proper position for the sun lamp?
Another solution could be to use the Geographical Sun plugin in Blender, as in the [Header]
section of the .ibl file, you may find GEOlat, GEOlong, Date
. Once set up, you just have to play around with the TimeZone of the Geographical Sun plugin?
"Hello, IT. Have you tried turning it off and on again?"