diff options
Diffstat (limited to 'intern/cycles/kernel/osl/osl_shader.h')
| -rw-r--r-- | intern/cycles/kernel/osl/osl_shader.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/intern/cycles/kernel/osl/osl_shader.h b/intern/cycles/kernel/osl/osl_shader.h new file mode 100644 index 00000000000..2e5279c12ce --- /dev/null +++ b/intern/cycles/kernel/osl/osl_shader.h @@ -0,0 +1,87 @@ +/* + * 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__ */ + |