1 files changed, 82 insertions, 0 deletions
diff --git a/intern/cycles/kernel/split/kernel_indirect_background.h b/intern/cycles/kernel/split/kernel_indirect_background.h
new file mode 100644
index 00000000000..8192528622e
--- /dev/null
+++ b/intern/cycles/kernel/split/kernel_indirect_background.h
@@ -0,0 +1,82 @@
+/*
+ * Copyright 2011-2017 Blender Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+CCL_NAMESPACE_BEGIN
+
+ccl_device void kernel_indirect_background(KernelGlobals *kg)
+{
+	ccl_global char *ray_state = kernel_split_state.ray_state;
+
+	int thread_index = ccl_global_id(1) * ccl_global_size(0) + ccl_global_id(0);
+	int ray_index;
+
+	if(kernel_data.integrator.ao_bounces) {
+		ray_index = get_ray_index(kg, thread_index,
+		                          QUEUE_ACTIVE_AND_REGENERATED_RAYS,
+		                          kernel_split_state.queue_data,
+		                          kernel_split_params.queue_size,
+		                          0);
+
+		if(ray_index != QUEUE_EMPTY_SLOT) {
+			if(IS_STATE(ray_state, ray_index, RAY_ACTIVE)) {
+				ccl_global PathState *state = &kernel_split_state.path_state[ray_index];
+				if(state->bounce > kernel_data.integrator.ao_bounces) {
+					ASSIGN_RAY_STATE(ray_state, ray_index, RAY_UPDATE_BUFFER);
+				}
+			}
+		}
+	}
+
+	ray_index = get_ray_index(kg, thread_index,
+	                          QUEUE_HITBG_BUFF_UPDATE_TOREGEN_RAYS,
+	                          kernel_split_state.queue_data,
+	                          kernel_split_params.queue_size,
+	                          0);
+
+	if(ray_index == QUEUE_EMPTY_SLOT) {
+		return;
+	}
+
+	ccl_global PathState *state = &kernel_split_state.path_state[ray_index];
+	PathRadiance *L = &kernel_split_state.path_radiance[ray_index];
+	ccl_global Ray *ray = &kernel_split_state.ray[ray_index];
+	ccl_global float3 *throughput = &kernel_split_state.throughput[ray_index];
+	ccl_global float *L_transparent = &kernel_split_state.L_transparent[ray_index];
+
+	if(IS_STATE(ray_state, ray_index, RAY_HIT_BACKGROUND)) {
+		/* eval background shader if nothing hit */
+		if(kernel_data.background.transparent && (state->flag & PATH_RAY_CAMERA)) {
+			*L_transparent = (*L_transparent) + average((*throughput));
+#ifdef __PASSES__
+			if(!(kernel_data.film.pass_flag & PASS_BACKGROUND))
+#endif
+				ASSIGN_RAY_STATE(ray_state, ray_index, RAY_UPDATE_BUFFER);
+		}
+
+		if(IS_STATE(ray_state, ray_index, RAY_HIT_BACKGROUND)) {
+#ifdef __BACKGROUND__
+			/* sample background shader */
+			float3 L_background = indirect_background(kg, &kernel_split_state.sd_DL_shadow[ray_index], state, ray);
+			path_radiance_accum_background(L, state, (*throughput), L_background);
+#endif
+			ASSIGN_RAY_STATE(ray_state, ray_index, RAY_UPDATE_BUFFER);
+		}
+	}
+
+
+}
+
+CCL_NAMESPACE_END