diff options
Diffstat (limited to 'intern/cycles/kernel/osl/osl.h')
| -rw-r--r-- | intern/cycles/kernel/osl/osl.h | 183 |
1 files changed, 158 insertions, 25 deletions
diff --git a/intern/cycles/kernel/osl/osl.h b/intern/cycles/kernel/osl/osl.h index bef23f3eea1..cc5c81ad027 100644 --- a/intern/cycles/kernel/osl/osl.h +++ b/intern/cycles/kernel/osl/osl.h @@ -1,38 +1,171 @@ -/* SPDX-License-Identifier: Apache-2.0 - * Copyright 2011-2022 Blender Foundation */ +/* SPDX-License-Identifier: BSD-3-Clause + * + * Adapted from Open Shading Language + * Copyright (c) 2009-2010 Sony Pictures Imageworks Inc., et al. + * All Rights Reserved. + * + * Modifications Copyright 2011-2022 Blender Foundation. */ #pragma once /* 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. + * Holds all variables to execute and use OSL shaders from the kernel. */ #include "kernel/osl/types.h" +#include "kernel/osl/closures_setup.h" + CCL_NAMESPACE_BEGIN -class OSLShader { - public: - /* 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); -}; +ccl_device_inline void shaderdata_to_shaderglobals(KernelGlobals kg, + ccl_private ShaderData *sd, + uint32_t path_flag, + ccl_private ShaderGlobals *globals) +{ + const differential3 dP = differential_from_compact(sd->Ng, sd->dP); + const differential3 dI = differential_from_compact(sd->I, sd->dI); + + /* copy from shader data to shader globals */ + globals->P = sd->P; + globals->dPdx = dP.dx; + globals->dPdy = dP.dy; + globals->I = sd->I; + globals->dIdx = dI.dx; + globals->dIdy = dI.dy; + globals->N = sd->N; + globals->Ng = sd->Ng; + globals->u = sd->u; + globals->dudx = sd->du.dx; + globals->dudy = sd->du.dy; + globals->v = sd->v; + globals->dvdx = sd->dv.dx; + globals->dvdy = sd->dv.dy; + globals->dPdu = sd->dPdu; + globals->dPdv = sd->dPdv; + globals->time = sd->time; + globals->dtime = 1.0f; + globals->surfacearea = 1.0f; + globals->raytype = path_flag; + globals->flipHandedness = 0; + globals->backfacing = (sd->flag & SD_BACKFACING); + + /* shader data to be used in services callbacks */ + globals->renderstate = sd; + + /* hacky, we leave it to services to fetch actual object matrix */ + globals->shader2common = sd; + globals->object2common = sd; + + /* must be set to NULL before execute */ + globals->Ci = nullptr; +} + +ccl_device void flatten_closure_tree(KernelGlobals kg, + ccl_private ShaderData *sd, + uint32_t path_flag, + ccl_private const OSLClosure *closure) +{ + int stack_size = 0; + float3 weight = one_float3(); + float3 weight_stack[16]; + ccl_private const OSLClosure *closure_stack[16]; + + while (closure) { + switch (closure->id) { + case OSL_CLOSURE_MUL_ID: { + ccl_private const OSLClosureMul *mul = static_cast<ccl_private const OSLClosureMul *>( + closure); + weight *= mul->weight; + closure = mul->closure; + continue; + } + case OSL_CLOSURE_ADD_ID: { + if (stack_size >= 16) { + kernel_assert(!"Exhausted OSL closure stack"); + break; + } + ccl_private const OSLClosureAdd *add = static_cast<ccl_private const OSLClosureAdd *>( + closure); + closure = add->closureA; + weight_stack[stack_size] = weight; + closure_stack[stack_size++] = add->closureB; + continue; + } +#define OSL_CLOSURE_STRUCT_BEGIN(Upper, lower) \ + case OSL_CLOSURE_##Upper##_ID: { \ + ccl_private const OSLClosureComponent *comp = \ + static_cast<ccl_private const OSLClosureComponent *>(closure); \ + osl_closure_##lower##_setup(kg, \ + sd, \ + path_flag, \ + weight * comp->weight, \ + reinterpret_cast<ccl_private const Upper##Closure *>(comp + 1)); \ + break; \ + } +#include "closures_template.h" + default: + break; + } + + if (stack_size > 0) { + weight = weight_stack[--stack_size]; + closure = closure_stack[stack_size]; + } + else { + closure = nullptr; + } + } +} + +#ifndef __KERNEL_GPU__ + +template<ShaderType type> +void osl_eval_nodes(const KernelGlobalsCPU *kg, + const void *state, + ShaderData *sd, + uint32_t path_flag); + +#else + +template<ShaderType type, typename ConstIntegratorGenericState> +ccl_device_inline void osl_eval_nodes(KernelGlobals kg, + ConstIntegratorGenericState state, + ccl_private ShaderData *sd, + uint32_t path_flag) +{ + ShaderGlobals globals; + shaderdata_to_shaderglobals(kg, sd, path_flag, &globals); + + const int shader = sd->shader & SHADER_MASK; + +# ifdef __KERNEL_OPTIX__ + uint8_t group_data[2048]; + uint8_t closure_pool[1024]; + sd->osl_closure_pool = closure_pool; + + unsigned int optix_dc_index = 2 /* NUM_CALLABLE_PROGRAM_GROUPS */ + + (shader + type * kernel_data.max_shaders) * 2; + optixDirectCall<void>(optix_dc_index + 0, + /* shaderglobals_ptr = */ &globals, + /* groupdata_ptr = */ (void *)group_data, + /* userdata_base_ptr = */ (void *)nullptr, + /* output_base_ptr = */ (void *)nullptr, + /* shadeindex = */ 0); + optixDirectCall<void>(optix_dc_index + 1, + /* shaderglobals_ptr = */ &globals, + /* groupdata_ptr = */ (void *)group_data, + /* userdata_base_ptr = */ (void *)nullptr, + /* output_base_ptr = */ (void *)nullptr, + /* shadeindex = */ 0); +# endif + + if (globals.Ci) { + flatten_closure_tree(kg, sd, path_flag, globals.Ci); + } +} + +#endif CCL_NAMESPACE_END |