Differential D12880 Diff 43387 intern/cycles/kernel/bvh/bvh_util.h

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Show First 20 Lines • Show All 216 Lines • ▼ Show 20 Lines	while (attr_map.x != id) {
}		}
attr_map = kernel_tex_fetch(__attributes_map, attr_offset);		attr_map = kernel_tex_fetch(__attributes_map, attr_offset);
}		}

/* return result */		/* return result */
return (attr_map.y == ATTR_ELEMENT_NONE) ? (int)ATTR_STD_NOT_FOUND : (int)attr_map.z;		return (attr_map.y == ATTR_ELEMENT_NONE) ? (int)ATTR_STD_NOT_FOUND : (int)attr_map.z;
}		}

		/* Transparent Shadows */

		/* Cut-off value to stop transparent shadow tracing when practically opaque. */
		#define CURVE_SHADOW_TRANSPARENCY_CUTOFF 0.001f

		ccl_device_inline float intersection_curve_shadow_transparency(ccl_global const KernelGlobals *kg,
		const int object,
		const int prim,
		const float u)
		{
		/* Find attribute. */
		const int offset = intersection_find_attribute(kg, object, ATTR_STD_SHADOW_TRANSPARENCY);
		if (offset == ATTR_STD_NOT_FOUND) {
		/* If no shadow transparency attribute, assume opaque. */
		return 0.0f;
		}

		/* Interpolate transparency between curve keys. */
		const KernelCurve kcurve = kernel_tex_fetch(__curves, prim);
		const int k0 = kcurve.first_key + PRIMITIVE_UNPACK_SEGMENT(kcurve.type);
		const int k1 = k0 + 1;

		const float f0 = kernel_tex_fetch(__attributes_float, offset + k0);
		const float f1 = kernel_tex_fetch(__attributes_float, offset + k1);

		return (1.0f - u) * f0 + u * f1;
		}

CCL_NAMESPACE_END		CCL_NAMESPACE_END