Upped LDS stack size to 16

Author: gboisse

RadeonRays/src/kernelcache/kernels_cl.h

@@ -2487,7 +2487,7 @@ static const char g_intersect_bvh2_lds_opencl[]= \
 " \n"\
 "#define GROUP_SIZE 64 \n"\
 "#define STACK_SIZE 32 \n"\
-"#define LDS_STACK_SIZE 8 \n"\
+"#define LDS_STACK_SIZE 16 \n"\
 " \n"\
 "// BVH node \n"\
 "typedef struct \n"\
@@ -2699,13 +2699,10 @@ static const char g_intersect_bvh2_lds_opencl[]= \
 "            const float3 invDir = safe_invdir(my_ray); \n"\
 "            const float3 oxInvDir = -my_ray.o.xyz * invDir; \n"\
 " \n"\
-"            // Intersection parametric distance \n"\
-"            float closest_t = my_ray.o.w; \n"\
-" \n"\
 "            // Current node address \n"\
 "            uint addr = 0; \n"\
-"            // Current closest address \n"\
-"            uint closest_addr = INVALID_ADDR; \n"\
+"            // Intersection parametric distance \n"\
+"            const float closest_t = my_ray.o.w; \n"\
 " \n"\
 "            uint stack_bottom = STACK_SIZE * index; \n"\
 "            uint sptr = stack_bottom; \n"\

RadeonRays/src/kernels/CL/intersect_bvh2_lds.cl

@@ -34,7 +34,7 @@ TYPE DEFINITIONS
 
 #define GROUP_SIZE 64
 #define STACK_SIZE 32
-#define LDS_STACK_SIZE 8
+#define LDS_STACK_SIZE 16
 
 // BVH node
 typedef struct
@@ -246,13 +246,10 @@ KERNEL void occluded_main(
             const float3 invDir = safe_invdir(my_ray);
             const float3 oxInvDir = -my_ray.o.xyz * invDir;
 
-            // Intersection parametric distance
-            float closest_t = my_ray.o.w;
-
             // Current node address
             uint addr = 0;
-            // Current closest address
-            uint closest_addr = INVALID_ADDR;
+            // Intersection parametric distance
+            const float closest_t = my_ray.o.w;
 
             uint stack_bottom = STACK_SIZE * index;
             uint sptr = stack_bottom;