Fix T48732 v2: New GGX breaks OpenCL kernel

As far as I can see, the second issue there was that the functions receive a pointer to a member variable of the
ShaderData, which is stored in global memory. However, this means that the pointer points to global memory as well,
therefore OpenCL requires the ccl_addr_space "keyword" in front of the pointer.
With this commit, the OpenCL kernels build on Linux with the Intel CPU OpenCL runtime - however, they already did
without the change and I don't have an AMD card, so I can't really test whether the AMD runtime is happy as well now.

1 files changed, 3 insertions, 3 deletions

diff --git a/intern/cycles/kernel/kernel_random.h b/intern/cycles/kernel/kernel_random.h
index 631a2cb75de..bf3c25d2cb2 100644
--- a/intern/cycles/kernel/kernel_random.h
+++ b/intern/cycles/kernel/kernel_random.h
@@ -232,14 +232,14 @@ ccl_device void path_rng_end(KernelGlobals *kg, ccl_global uint *rng_state, RNG
 
 /* Linear Congruential Generator */
 
-ccl_device uint lcg_step_uint(uint *rng)
+ccl_device uint lcg_step_uint(ccl_addr_space uint *rng)
 {
 	/* implicit mod 2^32 */
 	*rng = (1103515245*(*rng) + 12345);
 	return *rng;
 }
 
-ccl_device float lcg_step_float(uint *rng)
+ccl_device float lcg_step_float(ccl_addr_space uint *rng)
 {
 	/* implicit mod 2^32 */
 	*rng = (1103515245*(*rng) + 12345);
@@ -309,7 +309,7 @@ ccl_device_inline void path_state_branch(PathState *state, int branch, int num_b
 	state->num_samples = state->num_samples*num_branches;
 }
 
-ccl_device_inline uint lcg_state_init(RNG *rng, const PathState *state, uint scramble)
+ccl_device_inline uint lcg_state_init(RNG *rng, const ccl_addr_space PathState *state, uint scramble)
 {
 	return lcg_init(*rng + state->rng_offset + state->sample*scramble);
 }