diff options
Diffstat (limited to 'intern/cycles/kernel/closure/bsdf_diffuse.h')
| -rw-r--r-- | intern/cycles/kernel/closure/bsdf_diffuse.h | 70 |
1 files changed, 26 insertions, 44 deletions
diff --git a/intern/cycles/kernel/closure/bsdf_diffuse.h b/intern/cycles/kernel/closure/bsdf_diffuse.h index 759ad03f8e8..ec64c375666 100644 --- a/intern/cycles/kernel/closure/bsdf_diffuse.h +++ b/intern/cycles/kernel/closure/bsdf_diffuse.h @@ -26,39 +26,35 @@ ccl_device int bsdf_diffuse_setup(ccl_private DiffuseBsdf *bsdf) return SD_BSDF | SD_BSDF_HAS_EVAL; } -ccl_device float3 bsdf_diffuse_eval_reflect(ccl_private const ShaderClosure *sc, - const float3 I, - const float3 omega_in, - ccl_private float *pdf) +ccl_device Spectrum bsdf_diffuse_eval_reflect(ccl_private const ShaderClosure *sc, + const float3 I, + const float3 omega_in, + ccl_private float *pdf) { ccl_private const DiffuseBsdf *bsdf = (ccl_private const DiffuseBsdf *)sc; float3 N = bsdf->N; float cos_pi = fmaxf(dot(N, omega_in), 0.0f) * M_1_PI_F; *pdf = cos_pi; - return make_float3(cos_pi, cos_pi, cos_pi); + return make_spectrum(cos_pi); } -ccl_device float3 bsdf_diffuse_eval_transmit(ccl_private const ShaderClosure *sc, - const float3 I, - const float3 omega_in, - ccl_private float *pdf) +ccl_device Spectrum bsdf_diffuse_eval_transmit(ccl_private const ShaderClosure *sc, + const float3 I, + const float3 omega_in, + ccl_private float *pdf) { *pdf = 0.0f; - return make_float3(0.0f, 0.0f, 0.0f); + return zero_spectrum(); } ccl_device int bsdf_diffuse_sample(ccl_private const ShaderClosure *sc, float3 Ng, float3 I, - float3 dIdx, - float3 dIdy, float randu, float randv, - ccl_private float3 *eval, + 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 DiffuseBsdf *bsdf = (ccl_private const DiffuseBsdf *)sc; @@ -68,16 +64,11 @@ ccl_device int bsdf_diffuse_sample(ccl_private const ShaderClosure *sc, sample_cos_hemisphere(N, randu, randv, omega_in, pdf); if (dot(Ng, *omega_in) > 0.0f) { - *eval = make_float3(*pdf, *pdf, *pdf); -#ifdef __RAY_DIFFERENTIALS__ - // TODO: find a better approximation for the diffuse bounce - *domega_in_dx = (2 * dot(N, dIdx)) * N - dIdx; - *domega_in_dy = (2 * dot(N, dIdy)) * N - dIdy; -#endif + *eval = make_spectrum(*pdf); } else { *pdf = 0.0f; - *eval = make_float3(0.0f, 0.0f, 0.0f); + *eval = zero_spectrum(); } return LABEL_REFLECT | LABEL_DIFFUSE; } @@ -90,39 +81,35 @@ ccl_device int bsdf_translucent_setup(ccl_private DiffuseBsdf *bsdf) return SD_BSDF | SD_BSDF_HAS_EVAL; } -ccl_device float3 bsdf_translucent_eval_reflect(ccl_private const ShaderClosure *sc, - const float3 I, - const float3 omega_in, - ccl_private float *pdf) +ccl_device Spectrum bsdf_translucent_eval_reflect(ccl_private const ShaderClosure *sc, + const float3 I, + const float3 omega_in, + ccl_private float *pdf) { *pdf = 0.0f; - return make_float3(0.0f, 0.0f, 0.0f); + return zero_spectrum(); } -ccl_device float3 bsdf_translucent_eval_transmit(ccl_private const ShaderClosure *sc, - const float3 I, - const float3 omega_in, - ccl_private float *pdf) +ccl_device Spectrum bsdf_translucent_eval_transmit(ccl_private const ShaderClosure *sc, + const float3 I, + const float3 omega_in, + ccl_private float *pdf) { ccl_private const DiffuseBsdf *bsdf = (ccl_private const DiffuseBsdf *)sc; float3 N = bsdf->N; float cos_pi = fmaxf(-dot(N, omega_in), 0.0f) * M_1_PI_F; *pdf = cos_pi; - return make_float3(cos_pi, cos_pi, cos_pi); + return make_spectrum(cos_pi); } ccl_device int bsdf_translucent_sample(ccl_private const ShaderClosure *sc, float3 Ng, float3 I, - float3 dIdx, - float3 dIdy, float randu, float randv, - ccl_private float3 *eval, + 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 DiffuseBsdf *bsdf = (ccl_private const DiffuseBsdf *)sc; @@ -132,16 +119,11 @@ ccl_device int bsdf_translucent_sample(ccl_private const ShaderClosure *sc, // distribution over the hemisphere sample_cos_hemisphere(-N, randu, randv, omega_in, pdf); if (dot(Ng, *omega_in) < 0) { - *eval = make_float3(*pdf, *pdf, *pdf); -#ifdef __RAY_DIFFERENTIALS__ - // TODO: find a better approximation for the diffuse bounce - *domega_in_dx = -((2 * dot(N, dIdx)) * N - dIdx); - *domega_in_dy = -((2 * dot(N, dIdy)) * N - dIdy); -#endif + *eval = make_spectrum(*pdf); } else { *pdf = 0; - *eval = make_float3(0.0f, 0.0f, 0.0f); + *eval = zero_spectrum(); } return LABEL_TRANSMIT | LABEL_DIFFUSE; } |