diff options
Diffstat (limited to 'intern/cycles')
| -rw-r--r-- | intern/cycles/kernel/closure/bsdf_microfacet_multi_impl.h | 22 | ||||
| -rw-r--r-- | intern/cycles/kernel/kernel_random.h | 20 | ||||
| -rw-r--r-- | intern/cycles/kernel/kernel_shader.h | 4 |
3 files changed, 34 insertions, 12 deletions
diff --git a/intern/cycles/kernel/closure/bsdf_microfacet_multi_impl.h b/intern/cycles/kernel/closure/bsdf_microfacet_multi_impl.h index 8f8e19dd059..afd4a8da62a 100644 --- a/intern/cycles/kernel/closure/bsdf_microfacet_multi_impl.h +++ b/intern/cycles/kernel/closure/bsdf_microfacet_multi_impl.h @@ -98,9 +98,10 @@ ccl_device float3 MF_FUNCTION_FULL_NAME(mf_eval)(float3 wi, float3 wo, const boo for(int order = 0; order < 10; order++) { /* Sample microfacet height and normal */ - if(!mf_sample_height(wr, &hr, &C1_r, &G1_r, &lambda_r, lcg_step_float(lcg_state))) + if(!mf_sample_height(wr, &hr, &C1_r, &G1_r, &lambda_r, lcg_step_float_addrspace(lcg_state))) break; - float3 wm = mf_sample_vndf(-wr, alpha, make_float2(lcg_step_float(lcg_state), lcg_step_float(lcg_state))); + float3 wm = mf_sample_vndf(-wr, alpha, make_float2(lcg_step_float_addrspace(lcg_state), + lcg_step_float_addrspace(lcg_state))); #ifdef MF_MULTI_DIFFUSE if(order == 0) { @@ -128,14 +129,16 @@ ccl_device float3 MF_FUNCTION_FULL_NAME(mf_eval)(float3 wi, float3 wo, const boo /* Bounce from the microfacet. */ #ifdef MF_MULTI_GLASS bool next_outside; - wr = mf_sample_phase_glass(-wr, outside? eta: 1.0f/eta, wm, lcg_step_float(lcg_state), &next_outside); + wr = mf_sample_phase_glass(-wr, outside? eta: 1.0f/eta, wm, lcg_step_float_addrspace(lcg_state), &next_outside); if(!next_outside) { outside = !outside; wr = -wr; hr = -hr; } #elif defined(MF_MULTI_DIFFUSE) - wr = mf_sample_phase_diffuse(wm, lcg_step_float(lcg_state), lcg_step_float(lcg_state)); + wr = mf_sample_phase_diffuse(wm, + lcg_step_float_addrspace(lcg_state), + lcg_step_float_addrspace(lcg_state)); #else /* MF_MULTI_GLOSSY */ wr = mf_sample_phase_glossy(-wr, n, k, &throughput, wm); #endif @@ -179,13 +182,14 @@ ccl_device float3 MF_FUNCTION_FULL_NAME(mf_sample)(float3 wi, float3 *wo, const int order; for(order = 0; order < 10; order++) { /* Sample microfacet height. */ - if(!mf_sample_height(wr, &hr, &C1_r, &G1_r, &lambda_r, lcg_step_float(lcg_state))) { + if(!mf_sample_height(wr, &hr, &C1_r, &G1_r, &lambda_r, lcg_step_float_addrspace(lcg_state))) { /* The random walk has left the surface. */ *wo = outside? wr: -wr; return throughput; } /* Sample microfacet normal. */ - float3 wm = mf_sample_vndf(-wr, alpha, make_float2(lcg_step_float(lcg_state), lcg_step_float(lcg_state))); + float3 wm = mf_sample_vndf(-wr, alpha, make_float2(lcg_step_float_addrspace(lcg_state), + lcg_step_float_addrspace(lcg_state))); /* First-bounce color is already accounted for in mix weight. */ if(order > 0) @@ -194,14 +198,16 @@ ccl_device float3 MF_FUNCTION_FULL_NAME(mf_sample)(float3 wi, float3 *wo, const /* Bounce from the microfacet. */ #ifdef MF_MULTI_GLASS bool next_outside; - wr = mf_sample_phase_glass(-wr, outside? eta: 1.0f/eta, wm, lcg_step_float(lcg_state), &next_outside); + wr = mf_sample_phase_glass(-wr, outside? eta: 1.0f/eta, wm, lcg_step_float_addrspace(lcg_state), &next_outside); if(!next_outside) { hr = -hr; wr = -wr; outside = !outside; } #elif defined(MF_MULTI_DIFFUSE) - wr = mf_sample_phase_diffuse(wm, lcg_step_float(lcg_state), lcg_step_float(lcg_state)); + wr = mf_sample_phase_diffuse(wm, + lcg_step_float_addrspace(lcg_state), + lcg_step_float_addrspace(lcg_state)); #else /* MF_MULTI_GLOSSY */ wr = mf_sample_phase_glossy(-wr, n, k, &throughput, wm); #endif diff --git a/intern/cycles/kernel/kernel_random.h b/intern/cycles/kernel/kernel_random.h index bf3c25d2cb2..94598e2565e 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(ccl_addr_space uint *rng) +ccl_device uint lcg_step_uint(uint *rng) { /* implicit mod 2^32 */ *rng = (1103515245*(*rng) + 12345); return *rng; } -ccl_device float lcg_step_float(ccl_addr_space uint *rng) +ccl_device float lcg_step_float(uint *rng) { /* implicit mod 2^32 */ *rng = (1103515245*(*rng) + 12345); @@ -314,5 +314,21 @@ ccl_device_inline uint lcg_state_init(RNG *rng, const ccl_addr_space PathState * return lcg_init(*rng + state->rng_offset + state->sample*scramble); } +/* TODO(sergey): For until we can use generic address space from OpenCL 2.0. */ + +ccl_device_inline uint lcg_state_init_addrspace(ccl_addr_space RNG *rng, + const ccl_addr_space PathState *state, + uint scramble) +{ + return lcg_init(*rng + state->rng_offset + state->sample*scramble); +} + +ccl_device float lcg_step_float_addrspace(ccl_addr_space uint *rng) +{ + /* implicit mod 2^32 */ + *rng = (1103515245*(*rng) + 12345); + return (float)*rng * (1.0f/(float)0xFFFFFFFF); +} + CCL_NAMESPACE_END diff --git a/intern/cycles/kernel/kernel_shader.h b/intern/cycles/kernel/kernel_shader.h index 3a4770f82f1..765baa2a5ba 100644 --- a/intern/cycles/kernel/kernel_shader.h +++ b/intern/cycles/kernel/kernel_shader.h @@ -827,7 +827,7 @@ ccl_device float3 shader_holdout_eval(KernelGlobals *kg, ShaderData *sd) /* Surface Evaluation */ -ccl_device void shader_eval_surface(KernelGlobals *kg, ShaderData *sd, RNG *rng, +ccl_device void shader_eval_surface(KernelGlobals *kg, ShaderData *sd, ccl_addr_space RNG *rng, ccl_addr_space PathState *state, float randb, int path_flag, ShaderContext ctx) { ccl_fetch(sd, num_closure) = 0; @@ -851,7 +851,7 @@ ccl_device void shader_eval_surface(KernelGlobals *kg, ShaderData *sd, RNG *rng, } if(rng && (ccl_fetch(sd, flag) & SD_BSDF_NEEDS_LCG)) { - ccl_fetch(sd, lcg_state) = lcg_state_init(rng, state, 0xb4bc3953); + ccl_fetch(sd, lcg_state) = lcg_state_init_addrspace(rng, state, 0xb4bc3953); } } |