forked from bartvdbraak/blender
69 lines
2.1 KiB
C
69 lines
2.1 KiB
C
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/*
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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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CCL_NAMESPACE_BEGIN
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enum ObjectTransform {
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OBJECT_TRANSFORM = 0,
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OBJECT_INVERSE_TRANSFORM = 4,
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OBJECT_NORMAL_TRANSFORM = 8,
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OBJECT_PROPERTIES = 12
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};
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__device_inline Transform object_fetch_transform(KernelGlobals *kg, int object, enum ObjectTransform type)
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{
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Transform tfm;
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int offset = object*OBJECT_SIZE + (int)type;
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tfm.x = kernel_tex_fetch(__objects, offset + 0);
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tfm.y = kernel_tex_fetch(__objects, offset + 1);
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tfm.z = kernel_tex_fetch(__objects, offset + 2);
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tfm.w = kernel_tex_fetch(__objects, offset + 3);
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return tfm;
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}
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__device_inline void object_position_transform(KernelGlobals *kg, int object, float3 *P)
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{
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Transform tfm = object_fetch_transform(kg, object, OBJECT_TRANSFORM);
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*P = transform(&tfm, *P);
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}
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__device_inline void object_normal_transform(KernelGlobals *kg, int object, float3 *N)
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{
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Transform tfm = object_fetch_transform(kg, object, OBJECT_NORMAL_TRANSFORM);
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*N = normalize(transform_direction(&tfm, *N));
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}
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__device_inline void object_dir_transform(KernelGlobals *kg, int object, float3 *D)
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{
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Transform tfm = object_fetch_transform(kg, object, OBJECT_TRANSFORM);
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*D = transform_direction(&tfm, *D);
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}
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__device_inline float object_surface_area(KernelGlobals *kg, int object)
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{
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int offset = object*OBJECT_SIZE + OBJECT_PROPERTIES;
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float4 f = kernel_tex_fetch(__objects, offset);
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return f.x;
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}
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CCL_NAMESPACE_END
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