Dec 20, 2025, 1:16:16 AM
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Sweet Home 3D Forum » List all forums » » Forum: Features use and tips » » » Thread: Imperfect rendering » » » » Post: Re: Imperfect rendering |
Print at Dec 20, 2025, 1:16:16 AM |
| Posted by hansmex at Jun 22, 2010, 8:46:57 AM |
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Re: Imperfect rendering Emmanuel: Having installed version 2.5, I thought I should revisit my "house with hole in the roof" that started this thread. I made a series of renderings which showed a few surprising things. Because I wanted to know how SH3D deals with memory, I decided to have my System Monitor open, so I could keep an eye on processor use and memory use. Here follow a few observations: - When making a render using Create photo quality 0 or 1, I noticed that the processor load isn't balanced. One processor runs at (close to) 100% while the other "idles" at around 50%. This goes back and forth between the two processor cores. In quality 2 and 3, and in the Advanced Photo and Phong renderings, both cores (after an initial uneven phase) operate continuously at near 100% loads. - Even though I used "XMX 2048" to allow SH3D 2Gb of memory, under "normal" rendering the program only uses between 650 and 725 Mb. That includes the advanced modes. The surprise was the "old" photo rendering in quality setting 1. With unbalanced loads, memory use shot up to slightly above 1.1 Gb. Even so, after several minutes of calculating, SH3D ended the rendering with a nice red cross in the window, but no image. - SH3D keeps crashing on opening files. I have reported this before, but this behaviour hasn't changed. As I described before, the solution is to open SH3D, insert a model (any model), and then open the file on which I want to work. When the file (almost any file) is opened in the second instance of SH3D, there is no problem. So here are a few questions: (1) what parameters change in SH3D when I insert a single model into an empty sheet and (2) why and how does this influence the opening of the second instance of SH3D. All these crashes I keep reporting are not related to textures or other mistakes on my behalf. It happens on most of my models, regardless of what textures have been used. I have used large textures (2048x2048 pixels) many times without problems, and I have the feeling that the bug was introduced somewhere in the last few months. Maybe when the feature of textures on models was introduced? - I shall reduce my memory setting xmx 2048 to xmx 1024. Maybe that is causing a problem, and seeing that SH3D normally doesn't use more than, say, 750 Mb, it only seems overkill to allow more memory. I include links to my last error logs. I checked them, but couldn't find the "mesa"and "texture" lines Emmanuel described. The other links are screenshots of all the renderings I performed. Apart from the rendered image, they show the System Monitor window, where you can see the processor load and memory usage. - The first screenshot with the "white house" is from the first time I loaded the program. The house is made of 4 imported OBJ's and wouldn't render in the 3D window, although the photo render Q0 shows the house correctly. When I ran the Q1 render, the program took so long that I killed it. That produced the first error log. - The second error log is from reloading the file. SH3D crashed before it was ready with the 3D render. - I then opened SH3D and inserted one single object. After doing this, I opened the house again, which now showed correctly. This is what I almost always have to do in order to be able to work on a previously saved file. All the other screenshots were made without SH3D crashing, in one continuous process. They were created in this order: Photo 0, Photo 1, Photo 2, Photo 3, Advanced photo fast, Advanced photo best, Phong fast, Phong best, again Photo 0 (b), again Photo 1 (b, c, d), again Photo 2 (b) and again Photo 3 (b). I hope you all have a very nice day. Hans Photo q0 Photo q1 Photo q2 Photo q3 Advanced photo fast Advanced photo best Phong fast Phong best Photo q0 -b- Photo q1 -b- halfway Photo q1 -c- memory usage Photo q1 -d- ready Photo q2 -b- Photo q3 -b- error log 32640 = 08:20 hrs error log 32752 = 08:25 hrs ---------------------------------------- Hans new website - under constuction hansdirkse.info |
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