forked from bartvdbraak/blender
57cf48e7c6
should be no functional changes yet. UV, tangent and intercept are now stored as attributes, with the intention to add more like multiple uv's, vertex colors, generated coordinates and motion vectors later. Things got a bit messy due to having both triangle and curve data in the same mesh data structure, which also gives us two sets of attributes. This will get cleaned up when we split the mesh class.
86 lines
2.9 KiB
C++
86 lines
2.9 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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#ifndef __OSL_SHADER_H__
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#define __OSL_SHADER_H__
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#ifdef WITH_OSL
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/* OSL Shader Engine
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*
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* Holds all variables to execute and use OSL shaders from the kernel. These
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* are initialized externally by OSLShaderManager before rendering starts.
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*
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* Before/after a thread starts rendering, thread_init/thread_free must be
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* called, which will store any per thread OSL state in thread local storage.
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* This means no thread state must be passed along in the kernel itself.
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*/
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#include "kernel_types.h"
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CCL_NAMESPACE_BEGIN
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class Scene;
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struct ShaderClosure;
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struct ShaderData;
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struct differential3;
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struct KernelGlobals;
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struct OSLGlobals;
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struct OSLShadingSystem;
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class OSLShader {
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public:
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/* init */
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static void register_closures(OSLShadingSystem *ss);
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/* per thread data */
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static void thread_init(KernelGlobals *kg, KernelGlobals *kernel_globals, OSLGlobals *osl_globals);
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static void thread_free(KernelGlobals *kg);
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/* eval */
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static void eval_surface(KernelGlobals *kg, ShaderData *sd, float randb, int path_flag, ShaderContext ctx);
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static float3 eval_background(KernelGlobals *kg, ShaderData *sd, int path_flag, ShaderContext ctx);
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static void eval_volume(KernelGlobals *kg, ShaderData *sd, float randb, int path_flag, ShaderContext ctx);
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static void eval_displacement(KernelGlobals *kg, ShaderData *sd, ShaderContext ctx);
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/* sample & eval */
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static int bsdf_sample(const ShaderData *sd, const ShaderClosure *sc,
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float randu, float randv,
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float3& eval, float3& omega_in, differential3& domega_in, float& pdf);
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static float3 bsdf_eval(const ShaderData *sd, const ShaderClosure *sc,
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const float3& omega_in, float& pdf);
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static void bsdf_blur(ShaderClosure *sc, float roughness);
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static float3 emissive_eval(const ShaderData *sd, const ShaderClosure *sc);
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static float3 volume_eval_phase(const ShaderClosure *sc,
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const float3 omega_in, const float3 omega_out);
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/* attributes */
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static int find_attribute(KernelGlobals *kg, const ShaderData *sd, uint id, AttributeElement *elem);
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};
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CCL_NAMESPACE_END
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#endif
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#endif /* __OSL_SHADER_H__ */
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