A.I. / LLM Good RENDERING Prompts - well maybe


para-CAD
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My camera view placed into ChatGPT..  just playing.  I told it to place in the mountains (because that is where it's being built in NC), make landscape more realistic, add snow on the second draft.  You guys didn't know I invented a snow proof flag and pole, did ya!

 

@para-CAD

I've been meaning to get a second shed, thanks for the reminder.

COLLINS 1 EXTERIOR.jpg

COLLINS 1 EXTERIOR CHATGPT.png

COLLINS 1 EXTERIOR CHATGPT WINTER.png

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1st image = Chief Standard view, all out of the box no PBR.

1917476235_Screenshot2026-04-19at3_07_37PM.thumb.png.b8feaf0a20045713b384013ccda42697.png

 

 

Gemini (free, no account) 

Prompt = "Increase photorealism of this image. Improve lighting, global illumination, reflections, shadows, and material texture resolution. Preserve the exact architecture, materials, proportions, windows, doors, and camera perspective. Do not modify the design in any way—only enhance realism and render quality. "

Gemini_Generated_Image_qz4uymqz4uymqz4u.thumb.png.bf140d4f663690f6fae1d3152a8723f2.png

 

 

 

Chat GPT = make above rendering a winter scene but do not alter architecture or materials.

75906159_ChatGPTImageApr222026at12_03_24PM.thumb.png.db1e7e95c4c04ec363b829e7d94eb86e.png

 

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Posted (edited)

I had some success with Grok, initially, but now it cranks out completely blurry images like I'm showing a home from Witness Protection.

Edited by para-CAD
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 A client emailed me and wondered what direction I was running with his house, since the ROW and easements were ridiculous on a small city street.  The model is a WIP, but I did a quick camera view, and a screen grab at street level, and had ChatGPT merge the two, and remove trees.  First pass was enough to convey the direction.

Screenshot 2026-04-22 205722.png

Hernandez Exterior 1.jpg

ChatGPT Image Apr 22, 2026, 09_08_48 PM.png

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Well I've used chat gpt to change exterior wall materials and colors and it seemed to work fine. I even deleted a curved stairwell in one of my plan files and asked AI to make a better curved staircase and it worked nicely. Today I put it to the test and I wouldn't say it is to scale but it did a great job when I told it to merge these two screen shots of the floor plan my client wants. I searched everywhere but failed to find the web link. AI couldn't even find it with all the info put in.

 

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Here is a project I am involved in currently.  It's in very early development but, I wondered tonight what Google Gemini / Nano Banana would output based on my original image.  Nothing special.

 

953227779_JesseResidence.thumb.jpg.06d35f8060b22e26daca4af0706f1a65.jpg

 

A.I. Prompt

 

Turn this rendered image into a photo realistic rendering. Do not change the structure. Keep integrity and colors of the original structure. Siding is suppose to be board and batten. Add a gravel driveway going up to the garage doors. Add some landscaping and make it a late afternoon sunny scene.

 

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Edited by ComputerMaster86
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10 hours ago, ComputerMaster86 said:

Nothing special.

I disagree.  

 

If I were a client and looking at your Chief standard render I would not want to live in that and I would already be starting to think that maybe I chose the wrong draftsman/designer/architect.

 

With Gemini render, I personally would love to live in that myself.  

 

I can see myself smoking a cigar on the front porch and enjoying the scenery.

 

What you did in, I'm guessing 20 seconds in Gemini?... Would not be possible in Chief and even with the help of TwinMotion would take hours and hours and never come close.

 

Nice job!

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17 hours ago, mtldesigns said:

 A client emailed me and wondered what direction I was running with his house, since the ROW and easements were ridiculous on a small city street.  The model is a WIP, but I did a quick camera view, and a screen grab at street level, and had ChatGPT merge the two, and remove trees.  First pass was enough to convey the direction.

Screenshot 2026-04-22 205722.png

Hernandez Exterior 1.jpg

ChatGPT Image Apr 22, 2026, 09_08_48 PM.png

I tried doing that last pic a few years and it looked pretty good. I took a google maps screenshot of the lot and use it as a backdrop in CA. You know, before AI was coming out.

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For a different approach, I used Gemini images, and only gave it the elevation and the 3 swatches of material.

It had to figure out where to apply those materials and create it's own seamless textures from the swatches.

Quite impressive....

 

PROMPT:

"Using the elevation can you make a realistic rendering but do not change the architecture and use the attached material textures. The first one is the brick pattern. The second one is the stone pattern and the third one it the siding material. Window frames and trim are commercial brown."

 

image.thumb.png.b1365bbd3dfb1470f9492277eae62ec0.png

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Here is the result...

41315029_FacadeforSaganCCUV2.thumb.png.d94654dd4465bcd9e0a1ec800a160755.png

 

 

Alur_Stone_Calico_01-CST.jpg.avif

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I've been strictly using Gemini.  I've gone through a few prompts, but to me this is like handing out your Chief Architect template with all your settings ready to rip.

I have found that if I treat Gemini as a rendering engine, I have far better results and far more realistic pictures.

So I will upload a technical illustration of a drawing, and my prompt tells Gemini to ask me what to use for siding, stone, background, etc...

The biggest hangup is driveways and parking lots.  Even with specifying where they go, AI lacks context, so it gets a little weird at times.

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Posted (edited)

I hope chief abandons it's in app photo-realistic rendering approach and partners with a good AI service (included in our subscription).  And the cloud idea.........I am not inclined to drop Dropbox, or pay more for a CA cloud service.  Chief should integrate with Dropbox.  They don't need to expand outside their true focus...CAD software and not try to be a jack-of-all-trades.

Edited by para-CAD
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Great topic!  I have tried this in the past but grew annoyed with it because ChatGPT would always change the actual home.  Mainly changing size and location of windows and doors, but occassionaly changing the roof lines.  I'll have to give it another try and see how it's grown.

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38 minutes ago, DeLayDesign said:

Great topic!  I have tried this in the past but grew annoyed with it because ChatGPT would always change the actual home.  Mainly changing size and location of windows and doors, but occassionaly changing the roof lines.  I'll have to give it another try and see how it's grown.

   Use Nano Banana instead of ChatGPT 

It is way more consistent and true to original design 

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I've only been using ChatGPT for about a week but 

I have had good success at modifying specific objects.

 

Here is an interesting example. I wasn't particularly enamored of the look of the young lady but she was in the pose I wanted.

 

Original Chief PBR image 

478312806_Drag-ChiefOriginalPBR.thumb.png.cb90b49f5121d6fdb28cbd095734aa12.png

 

Prompt: photo realistic image showing sky between trees.

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Prompt: Change only the young lady with the flags to a cute blonde wearing an I (heart icon) racing t-shirt.

16975153_Drag-ChatGPTImage-1.thumb.png.6e8e1ac6d0043c080b871c824105f85b.png

 

What do ya think of Chat's choice? Calls to mind the old idiom "I wouldn't kick her/him out of bed for eating crackers" B)

Edited by Rich_Winsor
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  • para-CAD changed the title to A.I. / LLM Good RENDERING Prompts - well maybe

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