forked from bartvdbraak/blender
b9ce231060
More information in this post: http://code.blender.org/ Thanks to all contributes for giving their permission!
80 lines
2.0 KiB
C
80 lines
2.0 KiB
C
/*
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* Copyright 2011-2013 Blender Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License
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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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