Cycles: Expose diffuse and glossy depth to Light Path node

Was a bit confusing to have transparent and translucent depth
exposed but no diffuse or glossy.

Reviewers: brecht

Subscribers: eyecandy

Differential Revision: https://developer.blender.org/D2399

1 files changed, 20 insertions, 0 deletions

diff --git a/intern/cycles/kernel/osl/osl_services.cpp b/intern/cycles/kernel/osl/osl_services.cpp
index 26543862b80..eeccf9a9641 100644
--- a/intern/cycles/kernel/osl/osl_services.cpp
+++ b/intern/cycles/kernel/osl/osl_services.cpp
@@ -102,6 +102,8 @@ ustring OSLRenderServices::u_curve_tangent_normal("geom:curve_tangent_normal");
 #endif
 ustring OSLRenderServices::u_path_ray_length("path:ray_length");
 ustring OSLRenderServices::u_path_ray_depth("path:ray_depth");
+ustring OSLRenderServices::u_path_diffuse_depth("path:diffuse_depth");
+ustring OSLRenderServices::u_path_glossy_depth("path:glossy_depth");
 ustring OSLRenderServices::u_path_transparent_depth("path:transparent_depth");
 ustring OSLRenderServices::u_path_transmission_depth("path:transmission_depth");
 ustring OSLRenderServices::u_trace("trace");
@@ -759,6 +761,24 @@ bool OSLRenderServices::get_background_attribute(KernelGlobals *kg, ShaderData *
 		int f = state->bounce;
 		return set_attribute_int(f, type, derivatives, val);
 	}
+	else if(name == u_path_diffuse_depth) {
+		/* Diffuse Ray Depth */
+		PathState *state = sd->osl_path_state;
+		int f = state->diffuse_bounce;
+		return set_attribute_int(f, type, derivatives, val);
+	}
+	else if(name == u_path_glossy_depth) {
+		/* Glossy Ray Depth */
+		PathState *state = sd->osl_path_state;
+		int f = state->glossy_bounce;
+		return set_attribute_int(f, type, derivatives, val);
+	}
+	else if(name == u_path_transmission_depth) {
+		/* Transmission Ray Depth */
+		PathState *state = sd->osl_path_state;
+		int f = state->transmission_bounce;
+		return set_attribute_int(f, type, derivatives, val);
+	}
 	else if(name == u_path_transparent_depth) {
 		/* Transparent Ray Depth */
 		PathState *state = sd->osl_path_state;