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/*
* 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_SERVICES_H__
#define __OSL_SERVICES_H__
/* OSL Render Services
*
* Implementation of OSL render services, to retriever matrices, attributes,
* textures and point clouds. In principle this should only be accessing
* kernel data, but currently we also reach back into the Scene to retrieve
* attributes.
*/
#include <OSL/oslexec.h>
#include <OSL/oslclosure.h>
#ifdef WITH_PARTIO
#include <Partio.h>
#endif
CCL_NAMESPACE_BEGIN
class Object;
class Scene;
class Shader;
class ShaderData;
class float3;
class KernelGlobals;
class OSLRenderServices : public OSL::RendererServices
{
public:
OSLRenderServices();
~OSLRenderServices();
void thread_init(KernelGlobals *kernel_globals);
bool get_matrix(OSL::Matrix44 &result, OSL::TransformationPtr xform, float time);
bool get_inverse_matrix(OSL::Matrix44 &result, OSL::TransformationPtr xform, float time);
bool get_matrix(OSL::Matrix44 &result, ustring from, float time);
bool get_inverse_matrix(OSL::Matrix44 &result, ustring to, float time);
bool get_array_attribute(void *renderstate, bool derivatives,
ustring object, TypeDesc type, ustring name,
int index, void *val);
bool get_attribute(void *renderstate, bool derivatives, ustring object,
TypeDesc type, ustring name, void *val);
bool get_userdata(bool derivatives, ustring name, TypeDesc type,
void *renderstate, void *val);
bool has_userdata(ustring name, TypeDesc type, void *renderstate);
void *get_pointcloud_attr_query(ustring *attr_names,
TypeDesc *attr_types, int nattrs);
int pointcloud(ustring filename, const OSL::Vec3 ¢er, float radius,
int max_points, void *attr_query, void **attr_outdata);
private:
KernelGlobals *kernel_globals;
#ifdef WITH_PARTIO
/* OSL gets pointers to this but its definition is private.
right now it only caches the types already converted to
Partio constants. this is what get_pointcloud_attr_query
returns */
struct AttrQuery
{
/* names of the attributes to query */
std::vector<ustring> attr_names;
/* types as (enum Partio::ParticleAttributeType) of the
attributes in the query */
std::vector<int> attr_partio_types;
/* for sanity checks, capacity of the output arrays */
int capacity;
};
Partio::ParticlesData *get_pointcloud(ustring filename);
/* keep a list so adding elements doesn't invalidate pointers */
std::list<AttrQuery> m_attr_queries;
#endif
static ustring u_distance;
static ustring u_index;
static ustring u_camera;
static ustring u_screen;
static ustring u_raster;
static ustring u_ndc;
static ustring u_empty;
};
CCL_NAMESPACE_END
#endif /* __OSL_SERVICES_H__ */
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