forked from bartvdbraak/blender
06888b7beb
allocations for trace data, avoid some virtual function calls. Only helps a few percentages.
82 lines
2.2 KiB
C
82 lines
2.2 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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CCL_NAMESPACE_BEGIN
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/* note: the interfaces here are just as an example, need to figure
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* out the right functions and parameters to use */
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/* ISOTROPIC VOLUME CLOSURE */
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__device int volume_isotropic_setup(ShaderClosure *sc, float density)
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{
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sc->type = CLOSURE_VOLUME_ISOTROPIC_ID;
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sc->data0 = density;
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return SD_VOLUME;
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}
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__device float3 volume_isotropic_eval_phase(const ShaderClosure *sc, const float3 omega_in, const float3 omega_out)
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{
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return make_float3(1.0f, 1.0f, 1.0f);
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}
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/* TRANSPARENT VOLUME CLOSURE */
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__device int volume_transparent_setup(ShaderClosure *sc, float density)
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{
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sc->type = CLOSURE_VOLUME_TRANSPARENT_ID;
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sc->data0 = density;
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return SD_VOLUME;
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}
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__device float3 volume_transparent_eval_phase(const ShaderClosure *sc, const float3 omega_in, const float3 omega_out)
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{
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return make_float3(1.0f, 1.0f, 1.0f);
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}
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/* VOLUME CLOSURE */
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__device float3 volume_eval_phase(KernelGlobals *kg, const ShaderClosure *sc, const float3 omega_in, const float3 omega_out)
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{
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#ifdef __OSL__
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if(kg->osl && sc->prim)
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return OSLShader::volume_eval_phase(sc, omega_in, omega_out);
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#endif
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float3 eval;
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switch(sc->type) {
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case CLOSURE_VOLUME_ISOTROPIC_ID:
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eval = volume_isotropic_eval_phase(sc, omega_in, omega_out);
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break;
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case CLOSURE_VOLUME_TRANSPARENT_ID:
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eval = volume_transparent_eval_phase(sc, omega_in, omega_out);
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break;
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default:
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eval = make_float3(0.0f, 0.0f, 0.0f);
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break;
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}
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return eval;
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}
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CCL_NAMESPACE_END
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