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/* SPDX-License-Identifier: Apache-2.0
* Copyright 2011-2022 Blender Foundation */
#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 "kernel/types.h"
CCL_NAMESPACE_BEGIN
class Scene;
struct ShaderClosure;
struct ShaderData;
struct IntegratorStateCPU;
struct differential3;
struct KernelGlobalsCPU;
struct OSLGlobals;
struct OSLShadingSystem;
class OSLShader {
public:
/* init */
static void register_closures(OSLShadingSystem *ss);
/* per thread data */
static void thread_init(KernelGlobalsCPU *kg, OSLGlobals *osl_globals);
static void thread_free(KernelGlobalsCPU *kg);
/* eval */
static void eval_surface(const KernelGlobalsCPU *kg,
const void *state,
ShaderData *sd,
uint32_t path_flag);
static void eval_background(const KernelGlobalsCPU *kg,
const void *state,
ShaderData *sd,
uint32_t path_flag);
static void eval_volume(const KernelGlobalsCPU *kg,
const void *state,
ShaderData *sd,
uint32_t path_flag);
static void eval_displacement(const KernelGlobalsCPU *kg, const void *state, ShaderData *sd);
/* attributes */
static int find_attribute(const KernelGlobalsCPU *kg,
const ShaderData *sd,
uint id,
AttributeDescriptor *desc);
};
CCL_NAMESPACE_END
#endif
#endif /* __OSL_SHADER_H__ */
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