Cleanup: Remove unused ray type flags.

They were added for completeness, but it seems we don't need them.

4 files changed, 5 insertions, 14 deletions

diff --git a/intern/cycles/kernel/kernel_path.h b/intern/cycles/kernel/kernel_path.h
index cca7e897a7e..0ba8f694592 100644
--- a/intern/cycles/kernel/kernel_path.h
+++ b/intern/cycles/kernel/kernel_path.h
@@ -273,8 +273,6 @@ ccl_device void kernel_path_indirect(KernelGlobals *kg, RNG *rng, Ray ray,
 				float bssrdf_u, bssrdf_v;
 				path_state_rng_2D(kg, rng, &state, PRNG_BSDF_U, &bssrdf_u, &bssrdf_v);
 				subsurface_scatter_step(kg, &sd, state.flag, sc, &lcg_state, bssrdf_u, bssrdf_v, false);
-
-				state.flag |= PATH_RAY_BSSRDF_ANCESTOR;
 			}
 		}
 #endif
@@ -392,7 +390,6 @@ ccl_device bool kernel_path_subsurface_scatter(KernelGlobals *kg, ShaderData *sd
 			PathState hit_state = *state;
 			Ray hit_ray = *ray;
 
-			hit_state.flag |= PATH_RAY_BSSRDF_ANCESTOR;
 			hit_state.rng_offset += PRNG_BOUNCE_NUM;
 			
 			kernel_path_surface_connect_light(kg, rng, &bssrdf_sd[hit], tp, state, L);
@@ -779,8 +776,6 @@ ccl_device void kernel_branched_path_subsurface_scatter(KernelGlobals *kg,
 		float num_samples_inv = 1.0f/num_samples;
 		RNG bssrdf_rng = cmj_hash(*rng, i);
 
-		state->flag |= PATH_RAY_BSSRDF_ANCESTOR;
-
 		/* do subsurface scatter step with copy of shader data, this will
 		 * replace the BSSRDF with a diffuse BSDF closure */
 		for(int j = 0; j < num_samples; j++) {
@@ -832,8 +827,6 @@ ccl_device void kernel_branched_path_subsurface_scatter(KernelGlobals *kg,
 					&hit_state, L);
 			}
 		}
-
-		state->flag &= ~PATH_RAY_BSSRDF_ANCESTOR;
 	}
 }
 #endif
diff --git a/intern/cycles/kernel/kernel_path_state.h b/intern/cycles/kernel/kernel_path_state.h
index ab146c72cd0..45ea0e502ab 100644
--- a/intern/cycles/kernel/kernel_path_state.h
+++ b/intern/cycles/kernel/kernel_path_state.h
@@ -106,7 +106,7 @@ ccl_device_inline void path_state_next(KernelGlobals *kg, PathState *state, int
 			state->flag &= ~(PATH_RAY_GLOSSY|PATH_RAY_SINGULAR|PATH_RAY_MIS_SKIP);
 		}
 		else if(label & LABEL_GLOSSY) {
-			state->flag |= PATH_RAY_GLOSSY|PATH_RAY_GLOSSY_ANCESTOR;
+			state->flag |= PATH_RAY_GLOSSY;
 			state->flag &= ~(PATH_RAY_DIFFUSE|PATH_RAY_SINGULAR|PATH_RAY_MIS_SKIP);
 		}
 		else {
diff --git a/intern/cycles/kernel/kernel_types.h b/intern/cycles/kernel/kernel_types.h
index 0491b8ddec7..daa5ec1b9f1 100644
--- a/intern/cycles/kernel/kernel_types.h
+++ b/intern/cycles/kernel/kernel_types.h
@@ -264,9 +264,7 @@ enum PathRayFlag {
 
 	PATH_RAY_MIS_SKIP = 2048,
 	PATH_RAY_DIFFUSE_ANCESTOR = 4096,
-	PATH_RAY_GLOSSY_ANCESTOR = 8192,
-	PATH_RAY_BSSRDF_ANCESTOR = 16384,
-	PATH_RAY_SINGLE_PASS_DONE = 32768,
+	PATH_RAY_SINGLE_PASS_DONE = 8192,
 
 	/* we need layer member flags to be the 20 upper bits */
 	PATH_RAY_LAYER_SHIFT = (32-20)
diff --git a/intern/cycles/render/osl.cpp b/intern/cycles/render/osl.cpp
index cd6c6eb3706..a02f91ad2cf 100644
--- a/intern/cycles/render/osl.cpp
+++ b/intern/cycles/render/osl.cpp
@@ -213,9 +213,9 @@ void OSLShaderManager::shading_system_init()
 
 			"__unused__",
 			"__unused__",
-			"diffuse_ancestor", /* PATH_RAY_DIFFUSE_ANCESTOR */
-			"glossy_ancestor",  /* PATH_RAY_GLOSSY_ANCESTOR */
-			"bssrdf_ancestor",  /* PATH_RAY_BSSRDF_ANCESTOR */
+			"diffuse_ancestor",	/* PATH_RAY_DIFFUSE_ANCESTOR */
+			"__unused__",
+			"__unused__",
 			"__unused__",		/* PATH_RAY_SINGLE_PASS_DONE */
 			"volume_scatter",	/* PATH_RAY_VOLUME_SCATTER */
 		};