windows bugfixes

tools/blender/mitsuba/core/__init__.py

@@ -169,7 +169,7 @@ class RENDERENGINE_mitsuba(bpy.types.RenderEngine, engine_base):
 				'-Ddepth=%i' % preview_depth,
 				'-o', output_file, scene_file],
 			env = env,
-			cwd = tempdir
+			cwd = mts_path
 		)
 		framebuffer_thread = MtsFilmDisplay({
 			'resolution': resolution(scene),
@@ -252,16 +252,15 @@ class RENDERENGINE_mitsuba(bpy.types.RenderEngine, engine_base):
 					subprocess.Popen(
 						[mtsgui_binary, efutil.export_path],
 						env = env,
-						cwd = output_dir
+						cwd = mts_path
 					)
 				elif scene.mitsuba_engine.render_mode == 'cli':
 					output_file = efutil.export_path[:-4] + ".png"
-
 					mitsuba_process = subprocess.Popen(
 						[mitsuba_binary, '-r',  '%d' % scene.mitsuba_engine.refresh_interval,
 							'-o', output_file, efutil.export_path],
 						env = env,
-						cwd = output_dir
+						cwd = mts_path
 					)
 					framebuffer_thread = MtsFilmDisplay({
 						'resolution': resolution(scene),

tools/blender/mitsuba/operators/__init__.py

@@ -188,7 +188,7 @@ class EXPORT_OT_mitsuba(bpy.types.Operator):
 					[mtsimport_binary, '-r', '%dx%d' % (width, height),
 						'-l', 'pngfilm', mts_dae_file, mts_xml_file, mts_adj_file],
 					env = env,
-					cwd = self.properties.directory
+					cwd = mts_path
 				)
 				if process.wait() != 0:
 					self.report({'ERROR'}, "mtsimport returned with a nonzero status!")

tools/blender/mitsuba/properties/engine.py

@@ -75,8 +75,8 @@ class mitsuba_engine(declarative_property_group):
 			'type': 'int',
 			'attr': 'refresh_interval',
 			'name': 'Refresh interval',
-			'description': 'Period for updating rendering on screen (seconds)',
-			'default': 10,
+			'description': 'Period for updating rendering on screen (in seconds)',
+			'default': 5,
 			'min': 1,
 			'soft_min': 1,
 			'save_in_preset': True

tools/blender/mitsuba/ui/render_panels.py

@@ -16,7 +16,7 @@
 #
 # ##### END GPL LICENSE BLOCK #####
 
-import bpy
+import os, bpy
 from properties_render import RenderButtonsPanel
 
 from extensions_framework.ui import property_group_renderer
@@ -61,10 +61,13 @@ class engine(render_described_context, bpy.types.Panel):
 		global cached_binary_path
 		binary_path = context.scene.mitsuba_engine.binary_path
 		if binary_path != "" and cached_binary_path != binary_path:
-			binary_path = efutil.filesystem_path(binary_path)
-			efutil.write_config_value('mitsuba', 'defaults', 'binary_path', binary_path)
-			context.scene.mitsuba_engine.binary_path = binary_path
+			binary_path = os.path.abspath(efutil.filesystem_path(binary_path))
+			actualChange = cached_binary_path != None
 			cached_binary_path = binary_path
+			context.scene.mitsuba_engine.binary_path = binary_path
+			if actualChange:
+				print('Updating binary_path to "%s"\n' % binary_path)
+				efutil.write_config_value('mitsuba', 'defaults', 'binary_path', binary_path)
 		super().draw(context)
 
 class integrator(render_described_context, bpy.types.Panel):