Cycles: disable environment importance sampling code for CUDA cards with

compute model < 2.x, to avoid running out of memory in the compiler.

1 files changed, 6 insertions, 1 deletions

diff --git a/intern/cycles/kernel/kernel_emission.h b/intern/cycles/kernel/kernel_emission.h
index b3a5b2bfcb4..513a453b585 100644
--- a/intern/cycles/kernel/kernel_emission.h
+++ b/intern/cycles/kernel/kernel_emission.h
@@ -27,6 +27,7 @@ __device float3 direct_emissive_eval(KernelGlobals *kg, float rando,
 	ShaderData sd;
 	float3 eval;
 
+#ifdef __BACKGROUND_MIS__
 	if(ls->type == LIGHT_BACKGROUND) {
 		Ray ray;
 		ray.D = ls->D;
@@ -36,7 +37,9 @@ __device float3 direct_emissive_eval(KernelGlobals *kg, float rando,
 		shader_setup_from_background(kg, &sd, &ray);
 		eval = shader_eval_background(kg, &sd, 0);
 	}
-	else {
+	else
+#endif
+	{
 		shader_setup_from_sample(kg, &sd, ls->P, ls->Ng, I, ls->shader, ls->object, ls->prim, u, v);
 		ls->Ng = sd.Ng;
 
@@ -164,6 +167,7 @@ __device float3 indirect_background(KernelGlobals *kg, Ray *ray, int path_flag,
 	float3 L = shader_eval_background(kg, &sd, path_flag);
 	shader_release(kg, &sd);
 
+#ifdef __BACKGROUND_MIS__
 	/* check if background light exists or if we should skip pdf */
 	int res = kernel_data.integrator.pdf_background_res;
 
@@ -175,6 +179,7 @@ __device float3 indirect_background(KernelGlobals *kg, Ray *ray, int path_flag,
 
 		return L*mis_weight;
 	}
+#endif
 
 	return L;
 #else