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Diffstat (limited to 'intern/cycles/device/optix/device_impl.h')
| -rw-r--r-- | intern/cycles/device/optix/device_impl.h | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/intern/cycles/device/optix/device_impl.h b/intern/cycles/device/optix/device_impl.h new file mode 100644 index 00000000000..91ef52e0a5a --- /dev/null +++ b/intern/cycles/device/optix/device_impl.h @@ -0,0 +1,186 @@ +/* + * Copyright 2019, NVIDIA Corporation. + * Copyright 2019, 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. + */ + +#pragma once + +#ifdef WITH_OPTIX + +# include "device/cuda/device_impl.h" +# include "device/optix/queue.h" +# include "device/optix/util.h" +# include "kernel/kernel_types.h" + +CCL_NAMESPACE_BEGIN + +class BVHOptiX; +struct KernelParamsOptiX; + +/* List of OptiX program groups. */ +enum { + PG_RGEN_INTERSECT_CLOSEST, + PG_RGEN_INTERSECT_SHADOW, + PG_RGEN_INTERSECT_SUBSURFACE, + PG_RGEN_INTERSECT_VOLUME_STACK, + PG_RGEN_SHADE_SURFACE_RAYTRACE, + PG_MISS, + PG_HITD, /* Default hit group. */ + PG_HITS, /* __SHADOW_RECORD_ALL__ hit group. */ + PG_HITL, /* __BVH_LOCAL__ hit group (only used for triangles). */ + PG_HITD_MOTION, + PG_HITS_MOTION, + PG_CALL_SVM_AO, + PG_CALL_SVM_BEVEL, + PG_CALL_AO_PASS, + NUM_PROGRAM_GROUPS +}; + +static const int MISS_PROGRAM_GROUP_OFFSET = PG_MISS; +static const int NUM_MIS_PROGRAM_GROUPS = 1; +static const int HIT_PROGAM_GROUP_OFFSET = PG_HITD; +static const int NUM_HIT_PROGRAM_GROUPS = 5; +static const int CALLABLE_PROGRAM_GROUPS_BASE = PG_CALL_SVM_AO; +static const int NUM_CALLABLE_PROGRAM_GROUPS = 3; + +/* List of OptiX pipelines. */ +enum { PIP_SHADE_RAYTRACE, PIP_INTERSECT, NUM_PIPELINES }; + +/* A single shader binding table entry. */ +struct SbtRecord { + char header[OPTIX_SBT_RECORD_HEADER_SIZE]; +}; + +class OptiXDevice : public CUDADevice { + public: + OptixDeviceContext context = NULL; + + OptixModule optix_module = NULL; /* All necessary OptiX kernels are in one module. */ + OptixModule builtin_modules[2] = {}; + OptixPipeline pipelines[NUM_PIPELINES] = {}; + + bool motion_blur = false; + device_vector<SbtRecord> sbt_data; + device_only_memory<KernelParamsOptiX> launch_params; + OptixTraversableHandle tlas_handle = 0; + + vector<device_only_memory<char>> delayed_free_bvh_memory; + thread_mutex delayed_free_bvh_mutex; + + class Denoiser { + public: + explicit Denoiser(OptiXDevice *device); + ~Denoiser(); + + OptiXDevice *device; + OptiXDeviceQueue queue; + + OptixDenoiser optix_denoiser = nullptr; + + /* Configuration size, as provided to `optixDenoiserSetup`. + * If the `optixDenoiserSetup()` was never used on the current `optix_denoiser` the + * `is_configured` will be false. */ + bool is_configured = false; + int2 configured_size = make_int2(0, 0); + + /* OptiX denoiser state and scratch buffers, stored in a single memory buffer. + * The memory layout goes as following: [denoiser state][scratch buffer]. */ + device_only_memory<unsigned char> state; + size_t scratch_offset = 0; + size_t scratch_size = 0; + + bool use_pass_albedo = false; + bool use_pass_normal = false; + }; + Denoiser denoiser_; + + public: + OptiXDevice(const DeviceInfo &info, Stats &stats, Profiler &profiler); + ~OptiXDevice(); + + private: + BVHLayoutMask get_bvh_layout_mask() const override; + + string compile_kernel_get_common_cflags(const uint kernel_features) override; + + bool load_kernels(const uint kernel_features) override; + + bool build_optix_bvh(BVHOptiX *bvh, + OptixBuildOperation operation, + const OptixBuildInput &build_input, + uint16_t num_motion_steps); + + void build_bvh(BVH *bvh, Progress &progress, bool refit) override; + + void release_optix_bvh(BVH *bvh) override; + void free_bvh_memory_delayed(); + + void const_copy_to(const char *name, void *host, size_t size) override; + + void update_launch_params(size_t offset, void *data, size_t data_size); + + virtual unique_ptr<DeviceQueue> gpu_queue_create() override; + + /* -------------------------------------------------------------------- + * Denoising. + */ + + class DenoiseContext; + class DenoisePass; + + virtual bool denoise_buffer(const DeviceDenoiseTask &task) override; + virtual DeviceQueue *get_denoise_queue() override; + + /* Read guiding passes from the render buffers, preprocess them in a way which is expected by + * OptiX and store in the guiding passes memory within the given context. + * + * Pre=-processing of the guiding passes is to only happen once per context lifetime. DO not + * preprocess them for every pass which is being denoised. */ + bool denoise_filter_guiding_preprocess(DenoiseContext &context); + + /* Set fake albedo pixels in the albedo guiding pass storage. + * After this point only passes which do not need albedo for denoising can be processed. */ + bool denoise_filter_guiding_set_fake_albedo(DenoiseContext &context); + + void denoise_pass(DenoiseContext &context, PassType pass_type); + + /* Read input color pass from the render buffer into the memory which corresponds to the noisy + * input within the given context. Pixels are scaled to the number of samples, but are not + * preprocessed yet. */ + void denoise_color_read(DenoiseContext &context, const DenoisePass &pass); + + /* Run corresponding filter kernels, preparing data for the denoiser or copying data from the + * denoiser result to the render buffer. */ + bool denoise_filter_color_preprocess(DenoiseContext &context, const DenoisePass &pass); + bool denoise_filter_color_postprocess(DenoiseContext &context, const DenoisePass &pass); + + /* Make sure the OptiX denoiser is created and configured. */ + bool denoise_ensure(DenoiseContext &context); + + /* Create OptiX denoiser descriptor if needed. + * Will do nothing if the current OptiX descriptor is usable for the given parameters. + * If the OptiX denoiser descriptor did re-allocate here it is left unconfigured. */ + bool denoise_create_if_needed(DenoiseContext &context); + + /* Configure existing OptiX denoiser descriptor for the use for the given task. */ + bool denoise_configure_if_needed(DenoiseContext &context); + + /* Run configured denoiser. */ + bool denoise_run(DenoiseContext &context, const DenoisePass &pass); +}; + +CCL_NAMESPACE_END + +#endif /* WITH_OPTIX */ |