Merge branch 'master' into blender2.8

intern/cycles/blender/addon/__init__.py

@@ -107,7 +107,13 @@ def engine_exit():
     engine.exit()
 
 
+classes = (
+    CyclesRender,
+)
+
+
 def register():
+    from bpy.utils import register_class
     from . import ui
     from . import properties
     from . import presets
@@ -122,12 +128,15 @@ def register():
     properties.register()
     ui.register()
     presets.register()
-    bpy.utils.register_module(__name__)
+
+    for cls in classes:
+        register_class(cls)
 
     bpy.app.handlers.version_update.append(version_update.do_versions)
 
 
 def unregister():
+    from bpy.utils import unregister_class
     from . import ui
     from . import properties
     from . import presets
@@ -138,4 +147,6 @@ def unregister():
     ui.unregister()
     properties.unregister()
     presets.unregister()
-    bpy.utils.unregister_module(__name__)
+
+    for cls in classes:
+        unregister_class(cls)

intern/cycles/blender/addon/presets.py

@@ -82,12 +82,23 @@ class AddPresetSampling(AddPresetBase, Operator):
     preset_subdir = "cycles/sampling"
 
 
+classes = (
+    AddPresetIntegrator,
+    AddPresetSampling,
+)
+
+
 def register():
-    pass
+    from bpy.utils import register_class
+    for cls in classes:
+        register_class(cls)
 
 
 def unregister():
-    pass
+    from bpy.utils import unregister_class
+    for cls in classes:
+        unregister_class(cls)
+
 
 if __name__ == "__main__":
     register()

intern/cycles/blender/addon/ui.py

@@ -1714,17 +1714,75 @@ def get_panels():
 
     return panels
 
+
+classes = (
+    CYCLES_MT_sampling_presets,
+    CYCLES_MT_integrator_presets,
+    CyclesRender_PT_sampling,
+    CyclesRender_PT_geometry,
+    CyclesRender_PT_light_paths,
+    CyclesRender_PT_motion_blur,
+    CyclesRender_PT_film,
+    CyclesRender_PT_performance,
+    CyclesRender_PT_layer_options,
+    CyclesRender_PT_layer_passes,
+    CyclesRender_PT_views,
+    Cycles_PT_post_processing,
+    CyclesCamera_PT_dof,
+    Cycles_PT_context_material,
+    CyclesObject_PT_motion_blur,
+    CyclesObject_PT_cycles_settings,
+    CYCLES_OT_use_shading_nodes,
+    CyclesLamp_PT_preview,
+    CyclesLamp_PT_lamp,
+    CyclesLamp_PT_nodes,
+    CyclesLamp_PT_spot,
+    CyclesWorld_PT_preview,
+    CyclesWorld_PT_surface,
+    CyclesWorld_PT_volume,
+    CyclesWorld_PT_ambient_occlusion,
+    CyclesWorld_PT_mist,
+    CyclesWorld_PT_ray_visibility,
+    CyclesWorld_PT_settings,
+    CyclesMaterial_PT_preview,
+    CyclesMaterial_PT_surface,
+    CyclesMaterial_PT_volume,
+    CyclesMaterial_PT_displacement,
+    CyclesMaterial_PT_settings,
+    CyclesTexture_PT_context,
+    CyclesTexture_PT_node,
+    CyclesTexture_PT_mapping,
+    CyclesTexture_PT_colors,
+    CyclesParticle_PT_textures,
+    CyclesRender_PT_bake,
+    CyclesRender_PT_debug,
+    CyclesParticle_PT_CurveSettings,
+    CyclesScene_PT_simplify,
+)
+
+
 def register():
+    from bpy.utils import register_class
+
     bpy.types.RENDER_PT_render.append(draw_device)
     bpy.types.VIEW3D_HT_header.append(draw_pause)
 
     for panel in get_panels():
         panel.COMPAT_ENGINES.add('CYCLES')
 
+    for cls in classes:
+        register_class(cls)
+
+
 def unregister():
+    from bpy.utils import unregister_class
+
     bpy.types.RENDER_PT_render.remove(draw_device)
     bpy.types.VIEW3D_HT_header.remove(draw_pause)
 
     for panel in get_panels():
         if 'CYCLES' in panel.COMPAT_ENGINES:
             panel.COMPAT_ENGINES.remove('CYCLES')
+
+    for cls in classes:
+        unregister_class(cls)

intern/cycles/kernel/closure/bsdf_microfacet_multi.h

@@ -43,7 +43,7 @@ ccl_device_forceinline float D_ggx_aniso(const float3 wm, const float2 alpha)
 ccl_device_forceinline float2 mf_sampleP22_11(const float cosI, const float2 randU)
 {
 	if(cosI > 0.9999f || cosI < 1e-6f) {
-		const float r = sqrtf(randU.x / (1.0f - randU.x));
+		const float r = sqrtf(randU.x / max(1.0f - randU.x, 1e-7f));
 		const float phi = M_2PI_F * randU.y;
 		return make_float2(r*cosf(phi), r*sinf(phi));
 	}
@@ -83,7 +83,7 @@ ccl_device_forceinline float3 mf_sample_vndf(const float3 wi, const float2 alpha
 	const float3 wi_11 = normalize(make_float3(alpha.x*wi.x, alpha.y*wi.y, wi.z));
 	const float2 slope_11 = mf_sampleP22_11(wi_11.z, randU);
 
-	const float2 cossin_phi = normalize(make_float2(wi_11.x, wi_11.y));
+	const float2 cossin_phi = safe_normalize(make_float2(wi_11.x, wi_11.y));
 	const float slope_x = alpha.x*(cossin_phi.x * slope_11.x - cossin_phi.y * slope_11.y);
 	const float slope_y = alpha.y*(cossin_phi.y * slope_11.x + cossin_phi.x * slope_11.y);