diff options
Diffstat (limited to 'intern/cycles/kernel/closure/bsdf_toon.h')
| -rw-r--r-- | intern/cycles/kernel/closure/bsdf_toon.h | 100 |
1 files changed, 34 insertions, 66 deletions
diff --git a/intern/cycles/kernel/closure/bsdf_toon.h b/intern/cycles/kernel/closure/bsdf_toon.h index 0400fc61860..9f78c86b3b7 100644 --- a/intern/cycles/kernel/closure/bsdf_toon.h +++ b/intern/cycles/kernel/closure/bsdf_toon.h @@ -30,7 +30,7 @@ ccl_device int bsdf_diffuse_toon_setup(ccl_private ToonBsdf *bsdf) return SD_BSDF | SD_BSDF_HAS_EVAL; } -ccl_device float3 bsdf_toon_get_intensity(float max_angle, float smooth, float angle) +ccl_device float bsdf_toon_get_intensity(float max_angle, float smooth, float angle) { float is; @@ -41,7 +41,7 @@ ccl_device float3 bsdf_toon_get_intensity(float max_angle, float smooth, float a else is = 0.0f; - return make_float3(is, is, is); + return is; } ccl_device float bsdf_toon_get_sample_angle(float max_angle, float smooth) @@ -49,48 +49,40 @@ ccl_device float bsdf_toon_get_sample_angle(float max_angle, float smooth) return fminf(max_angle + smooth, M_PI_2_F); } -ccl_device float3 bsdf_diffuse_toon_eval_reflect(ccl_private const ShaderClosure *sc, - const float3 I, - const float3 omega_in, - ccl_private float *pdf) +ccl_device Spectrum bsdf_diffuse_toon_eval(ccl_private const ShaderClosure *sc, + const float3 I, + const float3 omega_in, + ccl_private float *pdf) { ccl_private const ToonBsdf *bsdf = (ccl_private const ToonBsdf *)sc; - float max_angle = bsdf->size * M_PI_2_F; - float smooth = bsdf->smooth * M_PI_2_F; - float angle = safe_acosf(fmaxf(dot(bsdf->N, omega_in), 0.0f)); + float cosNI = dot(bsdf->N, omega_in); - float3 eval = bsdf_toon_get_intensity(max_angle, smooth, angle); + if (cosNI >= 0.0f) { + float max_angle = bsdf->size * M_PI_2_F; + float smooth = bsdf->smooth * M_PI_2_F; + float angle = safe_acosf(fmaxf(cosNI, 0.0f)); - if (eval.x > 0.0f) { - float sample_angle = bsdf_toon_get_sample_angle(max_angle, smooth); + float eval = bsdf_toon_get_intensity(max_angle, smooth, angle); - *pdf = 0.5f * M_1_PI_F / (1.0f - cosf(sample_angle)); - return *pdf * eval; + if (eval > 0.0f) { + float sample_angle = bsdf_toon_get_sample_angle(max_angle, smooth); + + *pdf = 0.5f * M_1_PI_F / (1.0f - cosf(sample_angle)); + return make_spectrum(*pdf * eval); + } } - *pdf = 0.0f; - return make_float3(0.0f, 0.0f, 0.0f); -} -ccl_device float3 bsdf_diffuse_toon_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_toon_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 ToonBsdf *bsdf = (ccl_private const ToonBsdf *)sc; @@ -103,21 +95,15 @@ ccl_device int bsdf_diffuse_toon_sample(ccl_private const ShaderClosure *sc, sample_uniform_cone(bsdf->N, sample_angle, randu, randv, omega_in, pdf); if (dot(Ng, *omega_in) > 0.0f) { - *eval = *pdf * bsdf_toon_get_intensity(max_angle, smooth, angle); - -#ifdef __RAY_DIFFERENTIALS__ - // TODO: find a better approximation for the bounce - *domega_in_dx = (2.0f * dot(bsdf->N, dIdx)) * bsdf->N - dIdx; - *domega_in_dy = (2.0f * dot(bsdf->N, dIdy)) * bsdf->N - dIdy; -#endif + *eval = make_spectrum(*pdf * bsdf_toon_get_intensity(max_angle, smooth, angle)); } else { - *eval = make_float3(0.f, 0.f, 0.f); + *eval = zero_spectrum(); *pdf = 0.0f; } } else { - *eval = make_float3(0.f, 0.f, 0.f); + *eval = zero_spectrum(); *pdf = 0.0f; } @@ -135,10 +121,10 @@ ccl_device int bsdf_glossy_toon_setup(ccl_private ToonBsdf *bsdf) return SD_BSDF | SD_BSDF_HAS_EVAL; } -ccl_device float3 bsdf_glossy_toon_eval_reflect(ccl_private const ShaderClosure *sc, - const float3 I, - const float3 omega_in, - ccl_private float *pdf) +ccl_device Spectrum bsdf_glossy_toon_eval(ccl_private const ShaderClosure *sc, + const float3 I, + const float3 omega_in, + ccl_private float *pdf) { ccl_private const ToonBsdf *bsdf = (ccl_private const ToonBsdf *)sc; float max_angle = bsdf->size * M_PI_2_F; @@ -153,36 +139,23 @@ ccl_device float3 bsdf_glossy_toon_eval_reflect(ccl_private const ShaderClosure float angle = safe_acosf(fmaxf(cosRI, 0.0f)); - float3 eval = bsdf_toon_get_intensity(max_angle, smooth, angle); + float eval = bsdf_toon_get_intensity(max_angle, smooth, angle); float sample_angle = bsdf_toon_get_sample_angle(max_angle, smooth); *pdf = 0.5f * M_1_PI_F / (1.0f - cosf(sample_angle)); - return *pdf * eval; + return make_spectrum(*pdf * eval); } *pdf = 0.0f; - return make_float3(0.0f, 0.0f, 0.0f); -} - -ccl_device float3 bsdf_glossy_toon_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_glossy_toon_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 ToonBsdf *bsdf = (ccl_private const ToonBsdf *)sc; @@ -204,21 +177,16 @@ ccl_device int bsdf_glossy_toon_sample(ccl_private const ShaderClosure *sc, /* make sure the direction we chose is still in the right hemisphere */ if (cosNI > 0) { - *eval = *pdf * bsdf_toon_get_intensity(max_angle, smooth, angle); - -#ifdef __RAY_DIFFERENTIALS__ - *domega_in_dx = (2 * dot(bsdf->N, dIdx)) * bsdf->N - dIdx; - *domega_in_dy = (2 * dot(bsdf->N, dIdy)) * bsdf->N - dIdy; -#endif + *eval = make_spectrum(*pdf * bsdf_toon_get_intensity(max_angle, smooth, angle)); } else { *pdf = 0.0f; - *eval = make_float3(0.0f, 0.0f, 0.0f); + *eval = zero_spectrum(); } } else { *pdf = 0.0f; - *eval = make_float3(0.0f, 0.0f, 0.0f); + *eval = zero_spectrum(); } } |