what is the best of way to take snapshot from viewport?

[g2m.agent]

My request:

1. no background.
2. lighted.
3. the result is basically the same as the viewport.

4. ability to render only selected objects.

5. ability to override material (through Render Setup or some way)

for now, i using

import maya.cmds as cmds
cmds.hwRender(renderSelected=True)

it basically fit my request, the only problem is that the image gets dark. i tried using Color Management, but it didn't seem to work.

[Anonymous · Accepted solution]

I don't know how to hwRender with color management. Instead of hwRender, you can use ogsRender and createImageFormats. Below is a sample code.

import maya.app.general.createImageFormats as createImageFormats
formatManager = createImageFormats.ImageFormats()
# Set Render Mode for ogsRender
# Same as "Render Settings > Maya Hardware 2.0 > Render Options"
cmds.setAttr('hardwareRenderingGlobals.renderMode', 4)
cmds.setAttr('hardwareRenderingGlobals.lightingMode', 0)
# ogsRender needs a Render View. (Open Render View)
mel.eval('RenderViewWindow')
# Execute ogsRender. (The temporary image will be saved to local)
tmp_image_path = cmds.ogsRender(cam='persp')
# Render View stores the result of ogsRender separately from a temporary image.
# Temporarily override the save settings and save a image with color management.
formatManager.pushRenderGlobalsForDesc('PNG')
cmds.renderWindowEditor('renderView', e=1, colorManage=1, writeImage='....your_image_path.png')
# Resume from override.
formatManager.popRenderGlobals()
# Delete the image created by ogsRender.
import os
os.remove(tmp_image_path)

And to check the type of image format, execute below the code.

print(formatManager.listFormats(createImageFormats.ImageDescriptor.kIsImage, createImageFormats.ImageDescriptor.filterFormat))