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/*
* Copyright 2011-2013 Blender Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __OSL_GLOBALS_H__
#define __OSL_GLOBALS_H__
#ifdef WITH_OSL
# include <OSL/oslexec.h>
# include <OpenImageIO/refcnt.h>
# include <OpenImageIO/unordered_map_concurrent.h>
# include "util/util_map.h"
# include "util/util_param.h"
# include "util/util_thread.h"
# include "util/util_vector.h"
# include "util/util_unique_ptr.h"
# ifndef WIN32
using std::isfinite;
# endif
CCL_NAMESPACE_BEGIN
class OSLRenderServices;
/* OSL Texture Handle
*
* OSL texture lookups are string based. If those strings are known at compile
* time, the OSL compiler can cache a texture handle to use instead of a string.
*
* By default it uses TextureSystem::TextureHandle. But since we want to support
* different kinds of textures and color space conversions, this is our own handle
* with additional data.
*
* These are stored in a concurrent hash map, because OSL can compile multiple
* shaders in parallel. */
struct OSLTextureHandle : public OIIO::RefCnt {
enum Type { OIIO, SVM, IES, BEVEL, AO };
OSLTextureHandle() : type(OIIO), svm_slot(-1), oiio_handle(NULL)
{
}
OSLTextureHandle(Type type) : type(type), svm_slot(-1), oiio_handle(NULL)
{
}
OSLTextureHandle(Type type, int svm_slot) : type(type), svm_slot(svm_slot), oiio_handle(NULL)
{
}
Type type;
int svm_slot;
OSL::TextureSystem::TextureHandle *oiio_handle;
};
typedef OIIO::intrusive_ptr<OSLTextureHandle> OSLTextureHandleRef;
typedef OIIO::unordered_map_concurrent<ustring, OSLTextureHandleRef, ustringHash>
OSLTextureHandleMap;
/* OSL Globals
*
* Data needed by OSL render services, that is global to a rendering session.
* This includes all OSL shaders, name to attribute mapping and texture handles.
* */
struct OSLGlobals {
OSLGlobals()
{
ss = NULL;
ts = NULL;
services = NULL;
use = false;
}
bool use;
/* shading system */
OSL::ShadingSystem *ss;
OSL::TextureSystem *ts;
OSLRenderServices *services;
/* shader states */
vector<OSL::ShaderGroupRef> surface_state;
vector<OSL::ShaderGroupRef> volume_state;
vector<OSL::ShaderGroupRef> displacement_state;
vector<OSL::ShaderGroupRef> bump_state;
OSL::ShaderGroupRef background_state;
/* attributes */
struct Attribute {
TypeDesc type;
AttributeDescriptor desc;
ParamValue value;
};
typedef unordered_map<ustring, Attribute, ustringHash> AttributeMap;
typedef unordered_map<ustring, int, ustringHash> ObjectNameMap;
vector<AttributeMap> attribute_map;
ObjectNameMap object_name_map;
vector<ustring> object_names;
/* textures */
OSLTextureHandleMap textures;
};
/* trace() call result */
struct OSLTraceData {
Ray ray;
Intersection isect;
ShaderData sd;
bool setup;
bool init;
};
/* thread key for thread specific data lookup */
struct OSLThreadData {
OSL::ShaderGlobals globals;
OSL::PerThreadInfo *osl_thread_info;
OSLTraceData tracedata;
OSL::ShadingContext *context;
OIIO::TextureSystem::Perthread *oiio_thread_info;
};
CCL_NAMESPACE_END
#endif
#endif /* __OSL_GLOBALS_H__ */
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