GPU - CPU Quality issues and some improvement thoughts
Posted: Mon Mar 30, 2020 1:17 pm
Hi everyone,
I am really fan of Maxwell Render, its quality, simple of use, multilight feature. I would like to invest in 5 version, but after I run some GPU tests I have big concern if GPU render would ever be usable...
I dont know why, but GPU always produce some or tons of white dots, flares especially in interior renders. CPU is super clean while GPU gets additional noise every next SL instead of cleaning. Materials are simple, mostly 2xBDSF, whites and textures are maxed at 235 235 235 whites. Ilumination made by circular planes. In my opinion there is something wrong with reflections, they are less dense, like calculating only 1/100 samples with gpu, with bad precision. I am not able to do anything with that results.
Also, I think, good improvement would be "invert normals" option inside plugins. Making hidden emiters or grass in sketchup would be much faster. Right now I have to rotate planes so they can point light or grass in right direction...
About denoiser - would be great to add some denoise strenght settings. Right now denoiser produces super clean images that are wiped out from detalis, especially on wood or fabric textures, even using 8k textures.
Below are SL 18 renders CPU and GPU.
I am really fan of Maxwell Render, its quality, simple of use, multilight feature. I would like to invest in 5 version, but after I run some GPU tests I have big concern if GPU render would ever be usable...
I dont know why, but GPU always produce some or tons of white dots, flares especially in interior renders. CPU is super clean while GPU gets additional noise every next SL instead of cleaning. Materials are simple, mostly 2xBDSF, whites and textures are maxed at 235 235 235 whites. Ilumination made by circular planes. In my opinion there is something wrong with reflections, they are less dense, like calculating only 1/100 samples with gpu, with bad precision. I am not able to do anything with that results.
Also, I think, good improvement would be "invert normals" option inside plugins. Making hidden emiters or grass in sketchup would be much faster. Right now I have to rotate planes so they can point light or grass in right direction...
About denoiser - would be great to add some denoise strenght settings. Right now denoiser produces super clean images that are wiped out from detalis, especially on wood or fabric textures, even using 8k textures.
Below are SL 18 renders CPU and GPU.
