#!/usr/bin/env python3 import json import re from .render_worker import * class Blender(BaseRenderEngine): install_paths = ['/Applications/Blender.app/Contents/MacOS/Blender'] supported_extensions = ['.blend'] @classmethod def version(cls): version = None try: render_path = cls.renderer_path() if render_path: ver_out = subprocess.check_output([render_path, '-v']) version = ver_out.decode('utf-8').splitlines()[0].replace('Blender', '').strip() except Exception as e: logging.error(f'Failed to get Blender version: {e}') return version @classmethod def get_formats(cls): format_string = cls.get_help().split('Format Options')[-1].split('Animation Playback Options')[0] formats = re.findall(r"'([A-Z_0-9]+)'", format_string) return formats @classmethod def full_report(cls): return {'version': cls.version(), 'help_text': cls.get_help(), 'formats': cls.get_formats()} @classmethod def run_python_expression(cls, path, python_expression): if os.path.exists(path): try: return subprocess.run([cls.renderer_path(), '-b', path, '--python-expr', python_expression], capture_output=True) except Exception as e: logger.warning(f"Error running python expression in blender: {e}") pass else: raise FileNotFoundError @classmethod def run_python_script(cls, path, python_path): if os.path.exists(path) and os.path.exists(python_path): try: return subprocess.run([cls.renderer_path(), '-b', path, '--python', python_path], capture_output=True) except Exception as e: logger.warning(f"Error running python expression in blender: {e}") pass else: raise FileNotFoundError class BlenderRenderWorker(BaseRenderWorker): engine = Blender def __init__(self, input_path, output_path, args=None): super(BlenderRenderWorker, self).__init__(input_path=input_path, output_path=output_path, ignore_extensions=False, args=args) # Args self.blender_engine = self.args.get('engine', 'BLENDER_EEVEE').upper() self.export_format = self.args.get('export_format', None) or 'JPEG' self.camera = self.args.get('camera', None) self.render_all_frames = self.args.get('render_all_frames', False) or \ '-a' in (self.args.get('raw', None) or "").split(' ') self.frame_to_render = 0 # Stats self.__frame_percent_complete = 0.0 # Scene Info self.scene_info = get_scene_info(input_path) self.total_frames = (int(self.scene_info.get('frame_end', 0)) - int(self.scene_info.get('frame_start', 0)) + 1) \ if self.render_all_frames else 1 self.current_frame = int(self.scene_info.get('frame_start', 0)) def generate_worker_subprocess(self): cmd = [self.engine.renderer_path()] if self.args.get('background', True): # optionally run render not in background cmd.append('-b') cmd.append(self.input_path) if self.camera: cmd.extend(['--python-expr', f"import bpy;bpy.context.scene.camera = bpy.data.objects['{self.camera}'];"]) cmd.extend(['-E', self.blender_engine, '-o', self.output_path, '-F', self.export_format]) # all frames or single cmd.extend(['-a'] if self.render_all_frames else ['-f', str(self.frame_to_render)]) # Convert raw args from string if available raw_args = self.get_raw_args() if raw_args: cmd.extend(raw_args) return cmd def _parse_stdout(self, line): pattern = re.compile( r'Fra:(?P\d*).*Mem:(?P\S+).*Time:(?P\S+)(?:.*Remaining:)?(?P\S*)') found = pattern.search(line) if found: stats = found.groupdict() memory_use = stats['memory'] time_elapsed = stats['time'] time_remaining = stats['remaining'] or 'Unknown' sample_string = line.split('|')[-1].strip() if "sample" in sample_string.lower(): samples = re.sub(r'[^\d/]', '', sample_string) self.__frame_percent_complete = int(samples.split('/')[0]) / int(samples.split('/')[-1]) # Calculate rough percent based on cycles # EEVEE # 10-Apr-22 22:42:06 - RENDERER: Fra:0 Mem:857.99M (Peak 928.55M) | Time:00:03.96 | Rendering 1 / 65 samples # 10-Apr-22 22:42:10 - RENDERER: Fra:0 Mem:827.09M (Peak 928.55M) | Time:00:07.92 | Rendering 26 / 64 samples # 10-Apr-22 22:42:10 - RENDERER: Fra:0 Mem:827.09M (Peak 928.55M) | Time:00:08.17 | Rendering 51 / 64 samples # 10-Apr-22 22:42:10 - RENDERER: Fra:0 Mem:827.09M (Peak 928.55M) | Time:00:08.31 | Rendering 64 / 64 samples # CYCLES # 10-Apr-22 22:43:22 - RENDERER: Fra:0 Mem:836.30M (Peak 1726.13M) | Time:00:01.56 | Remaining:00:30.65 | Mem:588.68M, Peak:588.68M | Scene, View Layer | Sample 1/150 # 10-Apr-22 22:43:43 - RENDERER: Fra:0 Mem:836.30M (Peak 1726.13M) | Time:00:22.01 | Remaining:00:03.36 | Mem:588.68M, Peak:588.68M | Scene, View Layer | Sample 129/150 if int(stats['frame']) > self.current_frame: self.current_frame = int(stats['frame']) logger.debug( 'Frame:{0} | Mem:{1} | Time:{2} | Remaining:{3}'.format(self.current_frame, memory_use, time_elapsed, time_remaining)) elif 'error' in line.lower(): logger.error(line) self.errors.append(line) elif 'Saved' in line or 'Saving' in line or 'quit' in line: match = re.match(r'Time: (.*) \(Saving', line) if match: time_completed = match.groups()[0] if self.render_all_frames: logger.debug(f'Frame {self.current_frame} completed in {time_completed}') else: logger.info(f'Render completed in {time_completed}') else: logger.debug(line) else: pass # if len(line.strip()): # logger.debug(line.strip()) def percent_complete(self): if self.total_frames <= 1: return self.__frame_percent_complete else: whole_frame_percent = (self.current_frame - 1) / self.total_frames adjusted_frame_percent = self.__frame_percent_complete / self.total_frames total_percent = whole_frame_percent + adjusted_frame_percent return max(total_percent, 0) def pack_blender_files(path): # Credit to L0Lock for pack script - https://blender.stackexchange.com/a/243935 pack_script = "import bpy\n" \ "bpy.ops.file.pack_all()\n" \ "myPath = bpy.data.filepath\n" \ "myPath = str(myPath)\n" \ "bpy.ops.wm.save_as_mainfile(filepath=myPath[:-6]+'_packed'+myPath[-6:])" try: results = Blender.run_python_script(path, pack_script) result_text = results.stdout.decode() dir_name = os.path.dirname(path) # report any missing textures not_found = re.findall("(Unable to pack file, source path .*)\n", result_text) for err in not_found: logger.error(err) p = re.compile('Info: Saved "(.*)"') match = p.search(result_text) if match: new_path = os.path.join(dir_name, match.group(1)) logger.info(f'Blender file packed successfully to {new_path}') return new_path except Exception as e: logger.error(f'Error packing .blend file: {e}') return None def get_scene_info(path): scene_info = None try: results = Blender.run_python_script(path, os.path.join(os.path.dirname(os.path.realpath(__file__)), 'scripts', 'get_blender_info.py')) result_text = results.stdout.decode() for line in result_text.splitlines(): if line.startswith('SCENE_DATA:'): raw_data = line.split('SCENE_DATA:')[-1] scene_info = json.loads(raw_data) break except Exception as e: logger.error(f'Error getting file details for .blend file: {e}') return scene_info if __name__ == '__main__': print(Blender.full_report()) # x = pack_blender_files('/Users/brett/Blender Files/temple_animatic.blend') # print(x) # logging.basicConfig(format='%(asctime)s - %(message)s', datefmt='%d-%b-%y %H:%M:%S', level=logging.DEBUG) # r = BlenderRenderWorker('/Users/brett/Blender Files/temple_animatic.blend', '/Users/brett/testing1234') # # r.engine = 'CYCLES' # r.start() # while r.is_running(): # time.sleep(1)