forked from bartvdbraak/blender
de9dffc61e
well as I would like, but it works, just add a subsurface scattering node and you can use it like any other BSDF. It is using fully raytraced sampling compatible with progressive rendering and other more advanced rendering algorithms we might used in the future, and it uses no extra memory so it's suitable for complex scenes. Disadvantage is that it can be quite noisy and slow. Two limitations that will be solved are that it does not work with bump mapping yet, and that the falloff function used is a simple cubic function, it's not using the real BSSRDF falloff function yet. The node has a color input, along with a scattering radius for each RGB color channel along with an overall scale factor for the radii. There is also no GPU support yet, will test if I can get that working later. Node Documentation: http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Cycles/Nodes/Shaders#BSSRDF Implementation notes: http://wiki.blender.org/index.php/Dev:2.6/Source/Render/Cycles/Subsurface_Scattering
115 lines
3.2 KiB
C
115 lines
3.2 KiB
C
/*
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* Copyright 2011, Blender Foundation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef __KERNEL_COMPAT_OPENCL_H__
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#define __KERNEL_COMPAT_OPENCL_H__
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#define __KERNEL_GPU__
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#define __KERNEL_OPENCL__
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/* no namespaces in opencl */
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#define CCL_NAMESPACE_BEGIN
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#define CCL_NAMESPACE_END
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#ifdef __CL_NO_FLOAT3__
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#define float3 float4
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#endif
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#ifdef __CL_NOINLINE__
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#define __noinline __attribute__((noinline))
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#else
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#define __noinline
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#endif
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/* in opencl all functions are device functions, so leave this empty */
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#define __device
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#define __device_inline __device
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#define __device_noinline __device __noinline
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#define __may_alias
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/* no assert in opencl */
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#define kernel_assert(cond)
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/* make_type definitions with opencl style element initializers */
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#ifdef make_float2
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#undef make_float2
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#endif
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#ifdef make_float3
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#undef make_float3
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#endif
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#ifdef make_float4
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#undef make_float4
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#endif
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#ifdef make_int2
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#undef make_int2
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#endif
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#ifdef make_int3
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#undef make_int3
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#endif
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#ifdef make_int4
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#undef make_int4
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#endif
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#define make_float2(x, y) ((float2)(x, y))
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#ifdef __CL_NO_FLOAT3__
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#define make_float3(x, y, z) ((float4)(x, y, z, 0.0f))
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#else
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#define make_float3(x, y, z) ((float3)(x, y, z))
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#endif
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#define make_float4(x, y, z, w) ((float4)(x, y, z, w))
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#define make_int2(x, y) ((int2)(x, y))
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#define make_int3(x, y, z) ((int3)(x, y, z))
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#define make_int4(x, y, z, w) ((int4)(x, y, z, w))
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/* math functions */
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#define __uint_as_float(x) as_float(x)
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#define __float_as_uint(x) as_uint(x)
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#define __int_as_float(x) as_float(x)
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#define __float_as_int(x) as_int(x)
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#define sqrtf(x) sqrt(((float)x))
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#define cosf(x) cos(((float)x))
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#define sinf(x) sin(((float)x))
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#define powf(x, y) pow(((float)x), ((float)y))
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#define fabsf(x) fabs(((float)x))
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#define copysignf(x, y) copysign(((float)x), ((float)y))
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#define cosf(x) cos(((float)x))
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#define asinf(x) asin(((float)x))
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#define acosf(x) acos(((float)x))
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#define atanf(x) atan(((float)x))
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#define tanf(x) tan(((float)x))
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#define logf(x) log(((float)x))
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#define floorf(x) floor(((float)x))
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#define expf(x) exp(((float)x))
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#define hypotf(x, y) hypot(((float)x), ((float)y))
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#define atan2f(x, y) atan2(((float)x), ((float)y))
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#define fmaxf(x, y) fmax(((float)x), ((float)y))
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#define fminf(x, y) fmin(((float)x), ((float)y))
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/* data lookup defines */
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#define kernel_data (*kg->data)
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#define kernel_tex_lookup(t, x, offset, size) kernel_tex_lookup_(kg->t, offset, size, x)
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#define kernel_tex_fetch(t, index) kg->t[index]
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/* define NULL */
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#define NULL 0
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#include "util_types.h"
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#endif /* __KERNEL_COMPAT_OPENCL_H__ */
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