This probably one of the best ArchViz in the BlenderMarket it is the “Dark Interior Living Room” a top row BlenderArtist image recently. Made by Entity Designer available from BlenderMarket at https://blendermarket.com/creators/entitydesigner. It features a classical interior with dramatic lighting from light to dark transitions. The average scene shot Cycles rendering time was 30 minutes as mention by Entity Designer at 3.5k resolution. For my Eevee converted scenes the average rendering time was about 30 seconds.
Main issues that are different from Cycles are having only an HDRI image as the main source of lighting. As discuss before HDRI’s in Eevee don’t generate shadows, so standard lights need to be used for lighting to simulate an HDRI. Thick shag rug and, Whiskey decanter bottle, and glass with liquids and ice materials required changes compare to Cycles.
- Disable the HDR world background node.
- Added a large window area light as fill light, one main spot light at the center, a secondary spot light to light the right side of the room.
- IRV for the bathroom of 4x4x4.
- Adjusted all the small side lights to match Cycles.
- Tweak the shag carpet particles, material and effector settings.
- Modified the glass, liquid and ice materials for the Whisky bottle and glasses. In glass material had to change the glass shader node to use a transparency shader node to properly show the liquid and ice inside the glass.
- Reflection plane for the mirror.
- Rectangular reflection cube map.
- Adjusted materials as needed to closely match the Cycles scene.
- Sampling rate of sampling at 64.
This is the Cycles raw render:
This Eevee render facing the window took took 33 seconds at 2880x2160:
This Eevee render facing the window took took 29 seconds at 2880x2160:
This Eevee render facing the side took took 24 seconds at 2880x2160:
This Eevee render facing the other side took 25 seconds at 2880x2160:
This Eevee render close up of the Whiskey bottle and glasses 29 seconds at 2880x2160:
This Eevee render facing the coffee table and window took took 28 seconds at 2880x2160: