diff options
author | Brecht Van Lommel <brecht@blender.org> | 2022-08-11 17:53:11 +0300 |
---|---|---|
committer | Brecht Van Lommel <brecht@blender.org> | 2022-08-15 14:48:02 +0300 |
commit | e949d6da5bd347663addd583ff3f0211c96b81c8 (patch) | |
tree | 4a7478de4eb8fbd4c67989d94bc8e7c0353bca94 /intern/cycles/kernel/closure/bsdf_refraction.h | |
parent | d8841d0aa341e05c8cb9559b116b7e2a9ec11882 (diff) |
Cycles: simplify handling of ray differentials
* Store compact ray differentials in ShaderData and compute full differentials
on demand. This reduces register pressure on the GPU.
* Remove BSDF differential code that was effectively doing nothing as the
differential orientation was discarded when making it compact.
This gives a 1-5% speedup with RTX A6000 + OptiX in our benchmarks, with the
bigger speedups in simpler scenes.
Renders appear to be identical except for the Both displacement option that
does both displacement and bump.
Differential Revision: https://developer.blender.org/D15677
Diffstat (limited to 'intern/cycles/kernel/closure/bsdf_refraction.h')
-rw-r--r-- | intern/cycles/kernel/closure/bsdf_refraction.h | 26 |
1 files changed, 1 insertions, 25 deletions
diff --git a/intern/cycles/kernel/closure/bsdf_refraction.h b/intern/cycles/kernel/closure/bsdf_refraction.h index 3faa51025d6..e680a9617db 100644 --- a/intern/cycles/kernel/closure/bsdf_refraction.h +++ b/intern/cycles/kernel/closure/bsdf_refraction.h @@ -39,14 +39,10 @@ ccl_device Spectrum bsdf_refraction_eval_transmit(ccl_private const ShaderClosur ccl_device int bsdf_refraction_sample(ccl_private const ShaderClosure *sc, float3 Ng, float3 I, - float3 dIdx, - float3 dIdy, float randu, float randv, ccl_private Spectrum *eval, ccl_private float3 *omega_in, - ccl_private float3 *domega_in_dx, - ccl_private float3 *domega_in_dy, ccl_private float *pdf) { ccl_private const MicrofacetBsdf *bsdf = (ccl_private const MicrofacetBsdf *)sc; @@ -54,35 +50,15 @@ ccl_device int bsdf_refraction_sample(ccl_private const ShaderClosure *sc, float3 N = bsdf->N; float3 R, T; -#ifdef __RAY_DIFFERENTIALS__ - float3 dRdx, dRdy, dTdx, dTdy; -#endif bool inside; float fresnel; - fresnel = fresnel_dielectric(m_eta, - N, - I, - &R, - &T, -#ifdef __RAY_DIFFERENTIALS__ - dIdx, - dIdy, - &dRdx, - &dRdy, - &dTdx, - &dTdy, -#endif - &inside); + fresnel = fresnel_dielectric(m_eta, N, I, &R, &T, &inside); if (!inside && fresnel != 1.0f) { /* Some high number for MIS. */ *pdf = 1e6f; *eval = make_spectrum(1e6f); *omega_in = T; -#ifdef __RAY_DIFFERENTIALS__ - *domega_in_dx = dTdx; - *domega_in_dy = dTdy; -#endif } else { *pdf = 0.0f; |