Differential D572 Diff 1894 intern/cycles/kernel/shaders/node_anisotropic_bsdf.osl

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intern/cycles/kernel/shaders/node_anisotropic_bsdf.osl

This file was moved from intern/cycles/kernel/shaders/node_ward_bsdf.osl.

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* distributed under the License is distributed on an "AS IS" BASIS,		* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and		* See the License for the specific language governing permissions and
* limitations under the License		* limitations under the License
*/		*/

#include "stdosl.h"		#include "stdosl.h"

shader node_ward_bsdf(		shader node_anisotropic_bsdf(
color Color = 0.0,		color Color = 0.0,
		string distribution = "GGX",
float Roughness = 0.0,		float Roughness = 0.0,
float Anisotropy = 0.0,		float Anisotropy = 0.0,
float Rotation = 0.0,		float Rotation = 0.0,
normal Normal = N,		normal Normal = N,
normal Tangent = normalize(dPdu),		normal Tangent = normalize(dPdu),
output closure color BSDF = 0)		output closure color BSDF = 0)
{		{
/* rotate tangent around normal */		/* rotate tangent around normal */
Show All 10 Lines	if (aniso < 0.0) {
RoughnessU = Roughness / (1.0 + aniso);		RoughnessU = Roughness / (1.0 + aniso);
RoughnessV = Roughness * (1.0 + aniso);		RoughnessV = Roughness * (1.0 + aniso);
}		}
else {		else {
RoughnessU = Roughness * (1.0 - aniso);		RoughnessU = Roughness * (1.0 - aniso);
RoughnessV = Roughness / (1.0 - aniso);		RoughnessV = Roughness / (1.0 - aniso);
}		}

BSDF = Color * ward(Normal, T, RoughnessU, RoughnessV);		if (distribution == "Sharp")
		BSDF = Color * reflection(Normal);
		else if (distribution == "Beckmann")
		BSDF = Color * microfacet_beckmann_aniso(Normal, T, RoughnessU, RoughnessV);
		else if (distribution == "GGX")
		BSDF = Color * microfacet_ggx_aniso(Normal, T, RoughnessU, RoughnessV);
		else
		BSDF = Color * ashikhmin_shirley(Normal, T, RoughnessU, RoughnessV);
}		}