Blender Internal: Add "Lamp Data" shader node that allows shaders to acquire information such as light vector from specified Lamp.

For now this provides the following outputs:

- Color
- Light Vector
- Distance
- Shadow
- Visibility Factor

Note: Color output is multiplied by the lamp energy.  Multiplication of
color*max(dot(light_vector,normal_vector),0)*shadow*visibility_factor
produces the exact same result as the Lambert shader.

Many thanks to Brecht for code review and discussion!

1 files changed, 1 insertions, 0 deletions

diff --git a/source/blender/makesrna/intern/rna_internal.h b/source/blender/makesrna/intern/rna_internal.h
index 7950ed424ee..807fad41373 100644
--- a/source/blender/makesrna/intern/rna_internal.h
+++ b/source/blender/makesrna/intern/rna_internal.h
@@ -239,6 +239,7 @@ void rna_TextureSlot_brush_update(struct Main *bmain, struct Scene *scene, struc
 int rna_Armature_object_poll(struct PointerRNA *ptr, struct PointerRNA value);
 int rna_Camera_object_poll(struct PointerRNA *ptr, struct PointerRNA value);
 int rna_Curve_object_poll(struct PointerRNA *ptr, struct PointerRNA value);
+int rna_Lamp_object_poll(struct PointerRNA *ptr, struct PointerRNA value);
 int rna_Lattice_object_poll(struct PointerRNA *ptr, struct PointerRNA value);
 int rna_Mesh_object_poll(struct PointerRNA *ptr, struct PointerRNA value);