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Differential D12367 Diff 41308 intern/cycles/kernel/osl/osl_bssrdf.cpp

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intern/cycles/kernel/osl/osl_bssrdf.cpp

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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/ */
#include <OSL/genclosure.h> #include <OSL/genclosure.h>
#include "kernel/kernel_compat_cpu.h" #include "kernel/device/cpu/compat.h"
#include "kernel/osl/osl_closures.h" #include "kernel/osl/osl_closures.h"
// clang-format off // clang-format off
#include "kernel/kernel_types.h" #include "kernel/kernel_types.h"
#include "kernel/kernel_montecarlo.h" #include "kernel/kernel_montecarlo.h"
#include "kernel/closure/alloc.h" #include "kernel/closure/alloc.h"
#include "kernel/closure/bsdf_util.h" #include "kernel/closure/bsdf_util.h"
#include "kernel/closure/bsdf_diffuse.h" #include "kernel/closure/bsdf_diffuse.h"
#include "kernel/closure/bsdf_principled_diffuse.h" #include "kernel/closure/bsdf_principled_diffuse.h"
#include "kernel/closure/bssrdf.h" #include "kernel/closure/bssrdf.h"
// clang-format on // clang-format on
CCL_NAMESPACE_BEGIN CCL_NAMESPACE_BEGIN
using namespace OSL; using namespace OSL;
static ustring u_cubic("cubic"); static ustring u_random_walk_fixed_radius("random_walk_fixed_radius");
static ustring u_gaussian("gaussian");
static ustring u_burley("burley");
static ustring u_principled("principled");
static ustring u_random_walk("random_walk"); static ustring u_random_walk("random_walk");
static ustring u_principled_random_walk("principled_random_walk");
class CBSSRDFClosure : public CClosurePrimitive { class CBSSRDFClosure : public CClosurePrimitive {
public: public:
Bssrdf params; Bssrdf params;
float ior;
ustring method; ustring method;
CBSSRDFClosure() CBSSRDFClosure()
{ {
params.texture_blur = 0.0f; params.roughness = FLT_MAX;
params.sharpness = 0.0f; params.anisotropy = 1.0f;
params.roughness = 0.0f; ior = 1.4f;
} }
void setup(ShaderData *sd, int path_flag, float3 weight) void setup(ShaderData *sd, int path_flag, float3 weight)
{ {
if (method == u_cubic) { if (method == u_random_walk_fixed_radius) {
alloc(sd, path_flag, weight, CLOSURE_BSSRDF_CUBIC_ID); alloc(sd, path_flag, weight, CLOSURE_BSSRDF_RANDOM_WALK_FIXED_RADIUS_ID);
}
else if (method == u_gaussian) {
alloc(sd, path_flag, weight, CLOSURE_BSSRDF_GAUSSIAN_ID);
}
else if (method == u_burley) {
alloc(sd, path_flag, weight, CLOSURE_BSSRDF_BURLEY_ID);
}
else if (method == u_principled) {
alloc(sd, path_flag, weight, CLOSURE_BSSRDF_PRINCIPLED_ID);
} }
else if (method == u_random_walk) { else if (method == u_random_walk) {
alloc(sd, path_flag, weight, CLOSURE_BSSRDF_RANDOM_WALK_ID); alloc(sd, path_flag, weight, CLOSURE_BSSRDF_RANDOM_WALK_ID);
} }
else if (method == u_principled_random_walk) {
alloc(sd, path_flag, weight, CLOSURE_BSSRDF_PRINCIPLED_RANDOM_WALK_ID);
}
} }
void alloc(ShaderData *sd, int path_flag, float3 weight, ClosureType type) void alloc(ShaderData *sd, int path_flag, float3 weight, ClosureType type)
{ {
Bssrdf *bssrdf = bssrdf_alloc(sd, weight); Bssrdf *bssrdf = bssrdf_alloc(sd, weight);
if (bssrdf) { if (bssrdf) {
/* disable in case of diffuse ancestor, can't see it well then and /* disable in case of diffuse ancestor, can't see it well then and
* adds considerably noise due to probabilities of continuing path * adds considerably noise due to probabilities of continuing path
* getting lower and lower */ * getting lower and lower */
if (path_flag & PATH_RAY_DIFFUSE_ANCESTOR) { if (path_flag & PATH_RAY_DIFFUSE_ANCESTOR) {
params.radius = make_float3(0.0f, 0.0f, 0.0f); params.radius = make_float3(0.0f, 0.0f, 0.0f);
} }
/* create one closure per color channel */ /* create one closure per color channel */
bssrdf->radius = params.radius; bssrdf->radius = params.radius;
bssrdf->albedo = params.albedo; bssrdf->albedo = params.albedo;
bssrdf->texture_blur = params.texture_blur;
bssrdf->sharpness = params.sharpness;
bssrdf->N = params.N; bssrdf->N = params.N;
bssrdf->roughness = params.roughness; bssrdf->roughness = params.roughness;
sd->flag |= bssrdf_setup(sd, bssrdf, (ClosureType)type); bssrdf->anisotropy = clamp(params.anisotropy, 0.0f, 0.9f);
sd->flag |= bssrdf_setup(sd, bssrdf, (ClosureType)type, clamp(ior, 1.01f, 3.8f));
} }
} }
}; };
ClosureParam *closure_bssrdf_params() ClosureParam *closure_bssrdf_params()
{ {
static ClosureParam params[] = { static ClosureParam params[] = {
CLOSURE_STRING_PARAM(CBSSRDFClosure, method), CLOSURE_STRING_PARAM(CBSSRDFClosure, method),
CLOSURE_FLOAT3_PARAM(CBSSRDFClosure, params.N), CLOSURE_FLOAT3_PARAM(CBSSRDFClosure, params.N),
CLOSURE_FLOAT3_PARAM(CBSSRDFClosure, params.radius), CLOSURE_FLOAT3_PARAM(CBSSRDFClosure, params.radius),
CLOSURE_FLOAT3_PARAM(CBSSRDFClosure, params.albedo), CLOSURE_FLOAT3_PARAM(CBSSRDFClosure, params.albedo),
CLOSURE_FLOAT_KEYPARAM(CBSSRDFClosure, params.texture_blur, "texture_blur"),
CLOSURE_FLOAT_KEYPARAM(CBSSRDFClosure, params.sharpness, "sharpness"),
CLOSURE_FLOAT_KEYPARAM(CBSSRDFClosure, params.roughness, "roughness"), CLOSURE_FLOAT_KEYPARAM(CBSSRDFClosure, params.roughness, "roughness"),
CLOSURE_FLOAT_KEYPARAM(CBSSRDFClosure, ior, "ior"),
CLOSURE_FLOAT_KEYPARAM(CBSSRDFClosure, params.anisotropy, "anisotropy"),
CLOSURE_STRING_KEYPARAM(CBSSRDFClosure, label, "label"), CLOSURE_STRING_KEYPARAM(CBSSRDFClosure, label, "label"),
CLOSURE_FINISH_PARAM(CBSSRDFClosure)}; CLOSURE_FINISH_PARAM(CBSSRDFClosure)};
return params; return params;
} }
CCLOSURE_PREPARE(closure_bssrdf_prepare, CBSSRDFClosure) CCLOSURE_PREPARE(closure_bssrdf_prepare, CBSSRDFClosure)
CCL_NAMESPACE_END CCL_NAMESPACE_END