Volume domain is visible when use render into Blender. #40769

New Issue

Pedro A. · 2014-06-23T11:47:29+02:00

Pedro A. commented

2014-06-23 11:47:29 +02:00

System Information
Ubuntu 14.04 x64 and Windows XP 32 bits

Blender Version
Blender 2.71 RC2 from build bot
Short description of error
Volume domain is visible if use render 'into blender' from my exporter / integration (TheBounty, forked from YafaRay).

Render 'to image file' work OK.

That is the code use for 'integrate' render 'into blender' viewer:

def render(self, scene):
      if scene.name == 'preview':
          self.is_preview = True
      scene = scene.bounty
      
      postprocess = self.bl_use_postprocess

      self.bl_use_postprocess = False

      if scene.gs_type_render == "file" and not self.is_preview:
          self.yi.printInfo("Exporter: Rendering to file {0}".format(self.outputFile))
          
          self.yi.render(self.co)
          result = self.begin_result(0, 0, self.resX, self.resY)
          lay = result.layers[0]

        # exr format has z-buffer included, so no need to load '_zbuffer' - file

          if scene.gs_z_channel and not scene.img_output == 'OPEN_EXR':
              lay.load_from_file("{0}_zbuffer.{1}".format(self.output, self.file_type))
          else:
              lay.load_from_file(self.outputFile)
          self.end_result(result)

      elif scene.gs_type_render == "xml" and not self.is_preview:
          self.yi.printInfo("Exporter: Writing XML to file {0}".format(self.outputFile))
          self.yi.render(self.co)

      else:# into blender

          def progressCallback(command, *args):
              if not self.test_break():
                  if command == "tag":
                      self.tag = args[0]
                  elif command == "progress":
                      self.prog = args[0]
                  self.update_stats("TheBounty Render: ", "{0}".format(self.tag))

                  self.update_progress(self.prog)

          def drawAreaCallback(*args):
              x, y, w, h, tile = args
              res = self.begin_result(x, y, w, h)
              try:
                  lay = res.layers[0]
                  lay.rect, lay.passes[0].rect = tile
              except:
                  pass

              self.end_result(res)

          def flushCallback(*args):
              w, h, tile = args
              res = self.begin_result(0, 0, w, h)
              try:
                  lay = res.layers[0]
                  lay.rect, lay.passes[0].rect = tile
              except BaseException as e:
                  pass

              self.end_result(res)

        # define thread

          thread = threading.Thread(target=self.yi.render,
                               args=(self.resX, self.resY,
                                     self.bStartX, self.bStartY,
                                     self.is_preview,
                                     drawAreaCallback,
                                     flushCallback,
                                     progressCallback)
                               )

        # run..

          thread.start()

          while thread.isAlive() and not self.test_break():
              time.sleep(0.2)

          if thread.isAlive():
              self.update_stats("", "Aborting...")
              self.yi.abort()
              thread.join()

      self.yi.clearAll()
      del self.yi
      self.update_stats("", "Done!")
      self.bl_use_postprocess = postprocess

Exact steps for others to reproduce the error
I think this error may be related to the alpha channel of the viewport.
I have reviewed the information on RenderEngine struct API in Blender, without success.
RenderEngine struct
Any suggestions or ideas to solve this error?

**System Information** Ubuntu 14.04 x64 and Windows XP 32 bits **Blender Version** Blender 2.71 RC2 from build bot **Short description of error** Volume domain is visible if use render 'into blender' from my exporter / integration (TheBounty, forked from YafaRay). ![volume_domain2.png](https://archive.blender.org/developer/F95335/volume_domain2.png) Render 'to image file' work OK. ![volume_domain.png](https://archive.blender.org/developer/F95337/volume_domain.png) That is the code use for 'integrate' render 'into blender' viewer: ``` def render(self, scene): if scene.name == 'preview': self.is_preview = True scene = scene.bounty postprocess = self.bl_use_postprocess ``` # ``` self.bl_use_postprocess = False ``` ``` if scene.gs_type_render == "file" and not self.is_preview: self.yi.printInfo("Exporter: Rendering to file {0}".format(self.outputFile)) self.yi.render(self.co) result = self.begin_result(0, 0, self.resX, self.resY) lay = result.layers[0] ``` # exr format has z-buffer included, so no need to load '_zbuffer' - file ``` if scene.gs_z_channel and not scene.img_output == 'OPEN_EXR': lay.load_from_file("{0}_zbuffer.{1}".format(self.output, self.file_type)) else: lay.load_from_file(self.outputFile) self.end_result(result) ``` ``` elif scene.gs_type_render == "xml" and not self.is_preview: self.yi.printInfo("Exporter: Writing XML to file {0}".format(self.outputFile)) self.yi.render(self.co) ``` ``` else:# into blender ``` ``` def progressCallback(command, *args): if not self.test_break(): if command == "tag": self.tag = args[0] elif command == "progress": self.prog = args[0] self.update_stats("TheBounty Render: ", "{0}".format(self.tag)) ``` # ``` self.update_progress(self.prog) ``` ``` def drawAreaCallback(*args): x, y, w, h, tile = args res = self.begin_result(x, y, w, h) try: lay = res.layers[0] lay.rect, lay.passes[0].rect = tile except: pass ``` ``` self.end_result(res) ``` ``` def flushCallback(*args): w, h, tile = args res = self.begin_result(0, 0, w, h) try: lay = res.layers[0] lay.rect, lay.passes[0].rect = tile except BaseException as e: pass ``` ``` self.end_result(res) ``` # define thread ``` thread = threading.Thread(target=self.yi.render, args=(self.resX, self.resY, self.bStartX, self.bStartY, self.is_preview, drawAreaCallback, flushCallback, progressCallback) ) ``` # run.. ``` thread.start() ``` ``` while thread.isAlive() and not self.test_break(): time.sleep(0.2) ``` ``` if thread.isAlive(): self.update_stats("", "Aborting...") self.yi.abort() thread.join() ``` # ``` self.yi.clearAll() del self.yi self.update_stats("", "Done!") self.bl_use_postprocess = postprocess ``` **Exact steps for others to reproduce the error** I think this error may be related to the alpha channel of the viewport. I have reviewed the information on RenderEngine struct API in Blender, without success. [RenderEngine struct ](http://www.blender.org/documentation/blender_python_api_2_71_0/bpy.types.RenderEngine.html#bpy.types.RenderEngine.render) Any suggestions or ideas to solve this error?

Pedro A. commented

2014-06-23 11:47:29 +02:00

Changed status to: 'Open'

Pedro A. commented

2014-06-23 11:47:29 +02:00

Added subscriber: @povmaniac

Fazekas Laszlo commented

2014-06-24 22:10:58 +02:00

Added subscriber: @totoro-4

Fazekas Laszlo commented

2014-06-24 22:10:58 +02:00

Are you sure the domain is completely transparent when rendering into the image file? All colors are different so perhaps it's some color space problem? (premultiplied alpha?)

Sergey Sharybin commented

2014-06-25 11:16:19 +02:00

Added subscriber: @Sergey

Sergey Sharybin commented

2014-06-25 11:16:19 +02:00

It would really help saving bunch of time if you isolate exact operator or api call in blnderspython API which doesn't give you expected results, than asking us to extract this information from your renderer which involved loads of API communication, threading and so..

Bastien Montagne commented

2014-07-02 16:03:23 +02:00

Changed status from 'Open' to: 'Archived'

Bastien Montagne closed this issue

2014-07-02 16:03:23 +02:00

Bastien Montagne self-assigned this 2014-07-02 16:03:23 +02:00

Bastien Montagne commented

2014-07-02 16:03:23 +02:00

No news in one week, closing.

Pedro A. commented

2014-07-06 16:33:19 +02:00

Sorry, I don,t have some time this week for review this code, because I need solved job issues far on my city. Re-open task, please..

Bastien Montagne commented

2014-07-06 16:41:36 +02:00

We'll reopen once you answer sergey's request. Keeping unusable (for us) reports open is just useless. :)

Pedro A. commented

2014-07-07 15:39:20 +02:00

sergey, the python 'bindings' code for this code (drawAareaCallback, flushCallback, etc..) its here:
bindings
I really don't know what callback are don't work right.
Maybe the problen is on Blender 'image viewer'.. instead on RenderEngine code.

sergey, the python 'bindings' code for this code (drawAareaCallback, flushCallback, etc..) its here: [bindings ](https://github.com/TheBounty/Core/blob/master/src/bindings/yafrayinterface.i) I really don't know what callback are don't work right. Maybe the problen is on Blender 'image viewer'.. instead on RenderEngine code.

Sergey Sharybin commented

2014-08-19 13:20:00 +02:00

@povmaniac, i have no idea how the yafray bindings are expected to work and don't have time trying to understand what that code expects from us. We really need a simple case which demonstrates that some API call in blender doesn't work as it's expected. And this is much easier to do by those who are trying to use the API and doesn't get results he expects.

For us it'll take days just trying to understand what someone's code is trying to do.

@povmaniac, i have no idea how the yafray bindings are expected to work and don't have time trying to understand what that code expects from us. We really need a _simple_ case which demonstrates that some API call in blender doesn't work as it's expected. And this is much easier to do by those who are trying to use the API and doesn't get results he expects. For us it'll take days just trying to understand what someone's code is trying to do.

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Volume domain is visible when use render into Blender. #40769