Blender V2.61 - r43446

kernel_object.h

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00001 /*
00002  * Copyright 2011, Blender Foundation.
00003  *
00004  * This program is free software; you can redistribute it and/or
00005  * modify it under the terms of the GNU General Public License
00006  * as published by the Free Software Foundation; either version 2
00007  * of the License, or (at your option) any later version.
00008  *
00009  * This program is distributed in the hope that it will be useful,
00010  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012  * GNU General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU General Public License
00015  * along with this program; if not, write to the Free Software Foundation,
00016  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
00017  */
00018 
00019 CCL_NAMESPACE_BEGIN
00020 
00021 enum ObjectTransform {
00022     OBJECT_TRANSFORM = 0,
00023     OBJECT_INVERSE_TRANSFORM = 4,
00024     OBJECT_NORMAL_TRANSFORM = 8,
00025     OBJECT_PROPERTIES = 12
00026 };
00027 
00028 __device_inline Transform object_fetch_transform(KernelGlobals *kg, int object, enum ObjectTransform type)
00029 {
00030     Transform tfm;
00031 
00032     int offset = object*OBJECT_SIZE + (int)type;
00033 
00034     tfm.x = kernel_tex_fetch(__objects, offset + 0);
00035     tfm.y = kernel_tex_fetch(__objects, offset + 1);
00036     tfm.z = kernel_tex_fetch(__objects, offset + 2);
00037     tfm.w = kernel_tex_fetch(__objects, offset + 3);
00038 
00039     return tfm;
00040 }
00041 
00042 __device_inline void object_position_transform(KernelGlobals *kg, int object, float3 *P)
00043 {
00044     Transform tfm = object_fetch_transform(kg, object, OBJECT_TRANSFORM);
00045     *P = transform(&tfm, *P);
00046 }
00047 
00048 __device_inline void object_normal_transform(KernelGlobals *kg, int object, float3 *N)
00049 {
00050     Transform tfm = object_fetch_transform(kg, object, OBJECT_NORMAL_TRANSFORM);
00051     *N = normalize(transform_direction(&tfm, *N));
00052 }
00053 
00054 __device_inline void object_dir_transform(KernelGlobals *kg, int object, float3 *D)
00055 {
00056     Transform tfm = object_fetch_transform(kg, object, OBJECT_TRANSFORM);
00057     *D = transform_direction(&tfm, *D);
00058 }
00059 
00060 __device_inline float object_surface_area(KernelGlobals *kg, int object)
00061 {
00062     int offset = object*OBJECT_SIZE + OBJECT_PROPERTIES;
00063     float4 f = kernel_tex_fetch(__objects, offset);
00064     return f.x;
00065 }
00066 
00067 CCL_NAMESPACE_END
00068