forked from bartvdbraak/blender
da376e0237
Cycles uses code from some great open source projects, many thanks them: * BVH building and traversal code from NVidia's "Understanding the Efficiency of Ray Traversal on GPUs": http://code.google.com/p/understanding-the-efficiency-of-ray-traversal-on-gpus/ * Open Shading Language for a large part of the shading system: http://code.google.com/p/openshadinglanguage/ * Blender for procedural textures and a few other nodes. * Approximate Catmull Clark subdivision from NVidia Mesh tools: http://code.google.com/p/nvidia-mesh-tools/ * Sobol direction vectors from: http://web.maths.unsw.edu.au/~fkuo/sobol/ * Film response functions from: http://www.cs.columbia.edu/CAVE/software/softlib/dorf.php
88 lines
2.7 KiB
C++
88 lines
2.7 KiB
C++
/*
|
|
* Copyright 2011, Blender Foundation.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifndef __OSL_SHADER_H__
|
|
#define __OSL_SHADER_H__
|
|
|
|
#ifdef WITH_OSL
|
|
|
|
/* OSL Shader Engine
|
|
*
|
|
* Holds all variables to execute and use OSL shaders from the kernel. These
|
|
* are initialized externally by OSLShaderManager before rendering starts.
|
|
*
|
|
* Before/after a thread starts rendering, thread_init/thread_free must be
|
|
* called, which will store any per thread OSL state in thread local storage.
|
|
* This means no thread state must be passed along in the kernel itself.
|
|
*/
|
|
|
|
#include <OSL/oslexec.h>
|
|
#include <OSL/oslclosure.h>
|
|
|
|
#include "kernel_types.h"
|
|
|
|
#include "util_map.h"
|
|
#include "util_param.h"
|
|
#include "util_vector.h"
|
|
|
|
CCL_NAMESPACE_BEGIN
|
|
|
|
namespace OSL = ::OSL;
|
|
|
|
class OSLRenderServices;
|
|
class Scene;
|
|
class ShaderData;
|
|
class differential3;
|
|
class KernelGlobals;
|
|
|
|
class OSLShader {
|
|
public:
|
|
/* init */
|
|
static void register_closures(OSL::ShadingSystem *ss);
|
|
|
|
/* per thread data */
|
|
static void thread_init(KernelGlobals *kg);
|
|
static void thread_free(KernelGlobals *kg);
|
|
|
|
/* eval */
|
|
static void eval_surface(KernelGlobals *kg, ShaderData *sd, float randb, int path_flag);
|
|
static float3 eval_background(KernelGlobals *kg, ShaderData *sd, int path_flag);
|
|
static void eval_volume(KernelGlobals *kg, ShaderData *sd, float randb, int path_flag);
|
|
static void eval_displacement(KernelGlobals *kg, ShaderData *sd);
|
|
|
|
/* sample & eval */
|
|
static int bsdf_sample(const ShaderData *sd, float randu, float randv,
|
|
float3& eval, float3& omega_in, differential3& domega_in, float& pdf);
|
|
static float3 bsdf_eval(const ShaderData *sd, const float3& omega_in, float& pdf);
|
|
static float3 emissive_eval(const ShaderData *sd);
|
|
static void emissive_sample(const ShaderData *sd, float randu, float randv,
|
|
float3 *eval, float3 *I, float *pdf);
|
|
static float3 volume_eval_phase(const ShaderData *sd, const float3 omega_in,
|
|
const float3 omega_out);
|
|
|
|
/* release */
|
|
static void release(KernelGlobals *kg, const ShaderData *sd);
|
|
};
|
|
|
|
CCL_NAMESPACE_END
|
|
|
|
#endif
|
|
|
|
#endif /* __OSL_SHADER_H__ */
|
|
|