== povray ==

After discussion with Campbell I've made povray an addon as a package (will remove from bf-blender).
Please roport any glitch or mistake I might have done while porting.

render_povray/__init__.py

+# ##### BEGIN GPL LICENSE BLOCK #####
+#
+#  This program is free software; you can redistribute it and/or
+#  modify it under the terms of the GNU General Public License
+#  as published by the Free Software Foundation; either version 2
+#  of the License, or (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program; if not, write to the Free Software Foundation,
+#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+#
+# ##### END GPL LICENSE BLOCK #####
+
+bl_addon_info = {
+    'name': 'Render:PovRay',
+    'author': 'Campbell Barton',
+    'version': '0.1',
+    'blender': (2, 5, 4),
+    'location': 'Info Header (engine dropdown)',
+    'description': 'Basic povray integration for blender',
+    'warning': '', # used for warning icon and text in addons panel
+    'wiki_url': 'http://wiki.blender.org/index.php/Extensions:2.5/Py/' \
+        'Scripts/Render/PovRay',
+    'tracker_url': 'https://projects.blender.org/tracker/index.php?'\
+        'func=detail&aid=23145&group_id=153&atid=469',
+    'category': 'Render'}
+
+
+def register():
+    import bpy
+    from render_povray import ui, render
+    classes = [render.PovrayRender,ui.RENDER_PT_povray_radiosity]
+    register = bpy.types.register
+    for cls in classes:
+        register(cls)
+
+
+def unregister():
+    import bpy
+    from render_povray import ui, render
+    classes = [render.PovrayRender,ui.RENDER_PT_povray_radiosity]
+    unregister = bpy.types.unregister
+    for cls in classes:
+        unregister(cls)
+
+if __name__ == "__main__":
+    register()
+
+

render_povray/ui.py

+# ##### BEGIN GPL LICENSE BLOCK #####
+#
+#  This program is free software; you can redistribute it and/or
+#  modify it under the terms of the GNU General Public License
+#  as published by the Free Software Foundation; either version 2
+#  of the License, or (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program; if not, write to the Free Software Foundation,
+#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+#
+# ##### END GPL LICENSE BLOCK #####
+
+import bpy
+
+
+# Radiosity panel, use in the scene for now.
+FloatProperty = bpy.types.Scene.FloatProperty
+IntProperty = bpy.types.Scene.IntProperty
+BoolProperty = bpy.types.Scene.BoolProperty
+
+# Not a real pov option, just to know if we should write
+BoolProperty(attr="pov_radio_enable",
+                name="Enable Radiosity",
+                description="Enable povrays radiosity calculation",
+                default=False)
+BoolProperty(attr="pov_radio_display_advanced",
+                name="Advanced Options",
+                description="Show advanced options",
+                default=False)
+
+# Real pov options
+FloatProperty(attr="pov_radio_adc_bailout",
+                name="ADC Bailout",
+                description="The adc_bailout for radiosity rays. Use adc_bailout = 0.01 / brightest_ambient_object for good results",
+                min=0.0, max=1000.0, soft_min=0.0, soft_max=1.0, default=0.01)
+
+BoolProperty(attr="pov_radio_always_sample",
+                name="Always Sample",
+                description="Only use the data from the pretrace step and not gather any new samples during the final radiosity pass",
+                default=True)
+
+FloatProperty(attr="pov_radio_brightness",
+                name="Brightness",
+                description="Amount objects are brightened before being returned upwards to the rest of the system",
+                min=0.0, max=1000.0, soft_min=0.0, soft_max=10.0, default=1.0)
+
+IntProperty(attr="pov_radio_count",
+                name="Ray Count",
+                description="Number of rays that are sent out whenever a new radiosity value has to be calculated",
+                min=1, max=1600, default=35)
+
+FloatProperty(attr="pov_radio_error_bound",
+                name="Error Bound",
+                description="One of the two main speed/quality tuning values, lower values are more accurate",
+                min=0.0, max=1000.0, soft_min=0.1, soft_max=10.0, default=1.8)
+
+FloatProperty(attr="pov_radio_gray_threshold",
+                name="Gray Threshold",
+                description="One of the two main speed/quality tuning values, lower values are more accurate",
+                min=0.0, max=1.0, soft_min=0, soft_max=1, default=0.0)
+
+FloatProperty(attr="pov_radio_low_error_factor",
+                name="Low Error Factor",
+                description="If you calculate just enough samples, but no more, you will get an image which has slightly blotchy lighting",
+                min=0.0, max=1.0, soft_min=0.0, soft_max=1.0, default=0.5)
+
+# max_sample - not available yet
+BoolProperty(attr="pov_radio_media",
+                name="Media",
+                description="Radiosity estimation can be affected by media",
+                default=False)
+
+FloatProperty(attr="pov_radio_minimum_reuse",
+                name="Minimum Reuse",
+                description="Fraction of the screen width which sets the minimum radius of reuse for each sample point (At values higher than 2% expect errors)",
+                min=0.0, max=1.0, soft_min=0.1, soft_max=0.1, default=0.015)
+
+IntProperty(attr="pov_radio_nearest_count",
+                name="Nearest Count",
+                description="Number of old ambient values blended together to create a new interpolated value",
+                min=1, max=20, default=5)
+
+BoolProperty(attr="pov_radio_normal",
+                name="Normals",
+                description="Radiosity estimation can be affected by normals",
+                default=False)
+
+IntProperty(attr="pov_radio_recursion_limit",
+                name="Recursion Limit",
+                description="how many recursion levels are used to calculate the diffuse inter-reflection",
+                min=1, max=20, default=3)
+
+
+
+# Use some of the existing buttons.
+import properties_render
+properties_render.RENDER_PT_render.COMPAT_ENGINES.add('POVRAY_RENDER')
+properties_render.RENDER_PT_dimensions.COMPAT_ENGINES.add('POVRAY_RENDER')
+properties_render.RENDER_PT_antialiasing.COMPAT_ENGINES.add('POVRAY_RENDER')
+properties_render.RENDER_PT_output.COMPAT_ENGINES.add('POVRAY_RENDER')
+del properties_render
+
+# Use only a subset of the world panels
+import properties_world
+properties_world.WORLD_PT_preview.COMPAT_ENGINES.add('POVRAY_RENDER')
+properties_world.WORLD_PT_context_world.COMPAT_ENGINES.add('POVRAY_RENDER')
+properties_world.WORLD_PT_world.COMPAT_ENGINES.add('POVRAY_RENDER')
+properties_world.WORLD_PT_mist.COMPAT_ENGINES.add('POVRAY_RENDER')
+del properties_world
+
+# Example of wrapping every class 'as is'
+import properties_material
+for member in dir(properties_material):
+    subclass = getattr(properties_material, member)
+    try:
+        subclass.COMPAT_ENGINES.add('POVRAY_RENDER')
+    except:
+        pass
+del properties_material
+
+import properties_data_mesh
+for member in dir(properties_data_mesh):
+    subclass = getattr(properties_data_mesh, member)
+    try:
+        subclass.COMPAT_ENGINES.add('POVRAY_RENDER')
+    except:
+        pass
+del properties_data_mesh
+
+import properties_texture
+for member in dir(properties_texture):
+    subclass = getattr(properties_texture, member)
+    try:
+        subclass.COMPAT_ENGINES.add('POVRAY_RENDER')
+    except:
+        pass
+del properties_texture
+
+import properties_data_camera
+for member in dir(properties_data_camera):
+    subclass = getattr(properties_data_camera, member)
+    try:
+        subclass.COMPAT_ENGINES.add('POVRAY_RENDER')
+    except:
+        pass
+del properties_data_camera
+
+
+
+class RenderButtonsPanel(bpy.types.Panel):
+    bl_space_type = 'PROPERTIES'
+    bl_region_type = 'WINDOW'
+    bl_context = "render"
+    # COMPAT_ENGINES must be defined in each subclass, external engines can add themselves here
+
+    def poll(self, context):
+        rd = context.scene.render
+        return (rd.use_game_engine == False) and (rd.engine in self.COMPAT_ENGINES)
+
+
+class RENDER_PT_povray_radiosity(RenderButtonsPanel):
+    bl_label = "Radiosity"
+    COMPAT_ENGINES = {'POVRAY_RENDER'}
+
+    def draw_header(self, context):
+        scene = context.scene
+
+        self.layout.prop(scene, "pov_radio_enable", text="")
+
+    def draw(self, context):
+        layout = self.layout
+
+        scene = context.scene
+        rd = scene.render
+
+        layout.active = scene.pov_radio_enable
+
+        split = layout.split()
+
+        col = split.column()
+        col.prop(scene, "pov_radio_count", text="Rays")
+        col.prop(scene, "pov_radio_recursion_limit", text="Recursions")
+        col = split.column()
+        col.prop(scene, "pov_radio_error_bound", text="Error")
+
+        layout.prop(scene, "pov_radio_display_advanced")
+
+        if scene.pov_radio_display_advanced:
+            split = layout.split()
+
+            col = split.column()
+            col.prop(scene, "pov_radio_adc_bailout", slider=True)
+            col.prop(scene, "pov_radio_gray_threshold", slider=True)
+            col.prop(scene, "pov_radio_low_error_factor", slider=True)
+
+            col = split.column()
+            col.prop(scene, "pov_radio_brightness")
+            col.prop(scene, "pov_radio_minimum_reuse", text="Min Reuse")
+            col.prop(scene, "pov_radio_nearest_count")
+
+            split = layout.split()
+
+            col = split.column()
+            col.label(text="Estimation Influence:")
+            col.prop(scene, "pov_radio_media")
+            col.prop(scene, "pov_radio_normal")
+
+            col = split.column()
+            col.prop(scene, "pov_radio_always_sample")
+
+
+