Differential D12367 Diff 41308 intern/cycles/kernel/closure/bsdf_ashikhmin_velvet.h

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intern/cycles/kernel/closure/bsdf_ashikhmin_velvet.h

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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT		* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,		* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* 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.
*/		*/

#ifndef __BSDF_ASHIKHMIN_VELVET_H__		#pragma once
#define __BSDF_ASHIKHMIN_VELVET_H__
		#include "kernel/kernel_montecarlo.h"

CCL_NAMESPACE_BEGIN		CCL_NAMESPACE_BEGIN

typedef ccl_addr_space struct VelvetBsdf {		typedef ccl_addr_space struct VelvetBsdf {
SHADER_CLOSURE_BASE;		SHADER_CLOSURE_BASE;

float sigma;		float sigma;
float invsigma2;		float invsigma2;
} VelvetBsdf;		} VelvetBsdf;

static_assert(sizeof(ShaderClosure) >= sizeof(VelvetBsdf), "VelvetBsdf is too large!");		static_assert(sizeof(ShaderClosure) >= sizeof(VelvetBsdf), "VelvetBsdf is too large!");

ccl_device int bsdf_ashikhmin_velvet_setup(VelvetBsdf *bsdf)		ccl_device int bsdf_ashikhmin_velvet_setup(VelvetBsdf *bsdf)
{		{
float sigma = fmaxf(bsdf->sigma, 0.01f);		float sigma = fmaxf(bsdf->sigma, 0.01f);
bsdf->invsigma2 = 1.0f / (sigma * sigma);		bsdf->invsigma2 = 1.0f / (sigma * sigma);

bsdf->type = CLOSURE_BSDF_ASHIKHMIN_VELVET_ID;		bsdf->type = CLOSURE_BSDF_ASHIKHMIN_VELVET_ID;

return SD_BSDF \| SD_BSDF_HAS_EVAL;		return SD_BSDF \| SD_BSDF_HAS_EVAL;
}		}

ccl_device bool bsdf_ashikhmin_velvet_merge(const ShaderClosure a, const ShaderClosure b)
{
const VelvetBsdf bsdf_a = (const VelvetBsdf )a;
const VelvetBsdf bsdf_b = (const VelvetBsdf )b;

return (isequal_float3(bsdf_a->N, bsdf_b->N)) && (bsdf_a->sigma == bsdf_b->sigma);
}

ccl_device float3 bsdf_ashikhmin_velvet_eval_reflect(const ShaderClosure *sc,		ccl_device float3 bsdf_ashikhmin_velvet_eval_reflect(const ShaderClosure *sc,
const float3 I,		const float3 I,
const float3 omega_in,		const float3 omega_in,
float *pdf)		float *pdf)
{		{
const VelvetBsdf bsdf = (const VelvetBsdf )sc;		const VelvetBsdf bsdf = (const VelvetBsdf )sc;
float m_invsigma2 = bsdf->invsigma2;		float m_invsigma2 = bsdf->invsigma2;
float3 N = bsdf->N;		float3 N = bsdf->N;
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}		}
else		else
*pdf = 0.0f;		*pdf = 0.0f;

return LABEL_REFLECT \| LABEL_DIFFUSE;		return LABEL_REFLECT \| LABEL_DIFFUSE;
}		}

CCL_NAMESPACE_END		CCL_NAMESPACE_END

#endif /* __BSDF_ASHIKHMIN_VELVET_H__ */