2011-09-27 20:03:16 +00:00
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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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2011-04-27 11:58:34 +00:00
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CCL_NAMESPACE_BEGIN
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2011-09-27 20:03:16 +00:00
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/* note: the interfaces here are just as an example, need to figure
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2012-06-09 17:22:52 +00:00
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* out the right functions and parameters to use */
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2011-09-27 20:03:16 +00:00
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/* ISOTROPIC VOLUME CLOSURE */
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__device void volume_isotropic_setup(ShaderData *sd, ShaderClosure *sc, float density)
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{
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sc->type = CLOSURE_VOLUME_ISOTROPIC_ID;
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sd->flag |= SD_VOLUME;
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sc->data0 = density;
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}
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__device float3 volume_isotropic_eval_phase(const ShaderData *sd, 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 void volume_transparent_setup(ShaderData *sd, ShaderClosure *sc, float density)
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{
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sc->type = CLOSURE_VOLUME_TRANSPARENT_ID;
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sd->flag |= SD_VOLUME;
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sc->data0 = density;
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}
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__device float3 volume_transparent_eval_phase(const ShaderData *sd, 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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2011-04-27 11:58:34 +00:00
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/* VOLUME CLOSURE */
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2011-09-12 13:13:56 +00:00
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__device float3 volume_eval_phase(const ShaderData *sd, const ShaderClosure *sc, const float3 omega_in, const float3 omega_out)
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2011-04-27 11:58:34 +00:00
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{
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2011-09-27 20:03:16 +00:00
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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(sd, 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(sd, 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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2011-04-27 11:58:34 +00:00
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}
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CCL_NAMESPACE_END
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