Differential D13043 Diff 44273 intern/cycles/kernel/osl/shader.h

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intern/cycles/kernel/osl/shader.h

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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_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__ */