Cycles: merge of cycles-x branch, a major update to the renderer

This includes much improved GPU rendering performance, viewport interactivity,
new shadow catcher, revamped sampling settings, subsurface scattering anisotropy,
new GPU volume sampling, improved PMJ sampling pattern, and more.

Some features have also been removed or changed, breaking backwards compatibility.
Including the removal of the OpenCL backend, for which alternatives are under
development.

Release notes and code docs:
https://wiki.blender.org/wiki/Reference/Release_Notes/3.0/Cycles
https://wiki.blender.org/wiki/Source/Render/Cycles

Credits:
* Sergey Sharybin
* Brecht Van Lommel
* Patrick Mours (OptiX backend)
* Christophe Hery (subsurface scattering anisotropy)
* William Leeson (PMJ sampling pattern)
* Alaska (various fixes and tweaks)
* Thomas Dinges (various fixes)

For the full commit history, see the cycles-x branch. This squashes together
all the changes since intermediate changes would often fail building or tests.

Ref T87839, T87837, T87836
Fixes T90734, T89353, T80267, T80267, T77185, T69800

1 files changed, 0 insertions, 197 deletions

diff --git a/intern/cycles/device/device_denoising.h b/intern/cycles/device/device_denoising.h
deleted file mode 100644
index bb8bdfdd225..00000000000
--- a/intern/cycles/device/device_denoising.h
+++ /dev/null
@@ -1,197 +0,0 @@
-/*
- * Copyright 2011-2017 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 __DEVICE_DENOISING_H__
-#define __DEVICE_DENOISING_H__
-
-#include "device/device.h"
-
-#include "render/buffers.h"
-
-#include "kernel/filter/filter_defines.h"
-
-#include "util/util_profiling.h"
-
-CCL_NAMESPACE_BEGIN
-
-class DenoisingTask {
- public:
-  /* Parameters of the denoising algorithm. */
-  int radius;
-  float nlm_k_2;
-  float pca_threshold;
-
-  /* Parameters of the RenderBuffers. */
-  struct RenderBuffers {
-    int offset;
-    int pass_stride;
-    int frame_stride;
-    int samples;
-  } render_buffer;
-
-  /* Pointer and parameters of the target buffer. */
-  struct TargetBuffer {
-    int offset;
-    int stride;
-    int pass_stride;
-    int denoising_clean_offset;
-    int denoising_output_offset;
-    device_ptr ptr;
-  } target_buffer;
-
-  TileInfo *tile_info;
-  device_vector<int> tile_info_mem;
-
-  ProfilingState *profiler;
-
-  int4 rect;
-  int4 filter_area;
-
-  bool do_prefilter;
-  bool do_filter;
-
-  struct DeviceFunctions {
-    function<bool(
-        device_ptr image_ptr,    /* Contains the values that are smoothed. */
-        device_ptr guide_ptr,    /* Contains the values that are used to calculate weights. */
-        device_ptr variance_ptr, /* Contains the variance of the guide image. */
-        device_ptr out_ptr       /* The filtered output is written into this image. */
-        )>
-        non_local_means;
-    function<bool(
-        device_ptr color_ptr, device_ptr color_variance_ptr, device_ptr scale_ptr, int frame)>
-        accumulate;
-    function<bool(device_ptr output_ptr)> solve;
-    function<bool()> construct_transform;
-
-    function<bool(device_ptr a_ptr,
-                  device_ptr b_ptr,
-                  device_ptr mean_ptr,
-                  device_ptr variance_ptr,
-                  int r,
-                  int4 rect)>
-        combine_halves;
-    function<bool(device_ptr a_ptr,
-                  device_ptr b_ptr,
-                  device_ptr sample_variance_ptr,
-                  device_ptr sv_variance_ptr,
-                  device_ptr buffer_variance_ptr)>
-        divide_shadow;
-    function<bool(int mean_offset,
-                  int variance_offset,
-                  device_ptr mean_ptr,
-                  device_ptr variance_ptr,
-                  float scale)>
-        get_feature;
-    function<bool(device_ptr image_ptr,
-                  device_ptr variance_ptr,
-                  device_ptr depth_ptr,
-                  device_ptr output_ptr)>
-        detect_outliers;
-    function<bool(int out_offset, device_ptr frop_ptr, device_ptr buffer_ptr)> write_feature;
-    function<void(RenderTileNeighbors &neighbors)> map_neighbor_tiles;
-    function<void(RenderTileNeighbors &neighbors)> unmap_neighbor_tiles;
-  } functions;
-
-  /* Stores state of the current Reconstruction operation,
-   * which is accessed by the device in order to perform the operation. */
-  struct ReconstructionState {
-    int4 filter_window;
-    int4 buffer_params;
-
-    int source_w;
-    int source_h;
-  } reconstruction_state;
-
-  /* Stores state of the current NLM operation,
-   * which is accessed by the device in order to perform the operation. */
-  struct NLMState {
-    int r;     /* Search radius of the filter. */
-    int f;     /* Patch size of the filter. */
-    float a;   /* Variance compensation factor in the MSE estimation. */
-    float k_2; /* Squared value of the k parameter of the filter. */
-    bool is_color;
-
-    void set_parameters(int r_, int f_, float a_, float k_2_, bool is_color_)
-    {
-      r = r_;
-      f = f_;
-      a = a_, k_2 = k_2_;
-      is_color = is_color_;
-    }
-  } nlm_state;
-
-  struct Storage {
-    device_only_memory<float> transform;
-    device_only_memory<int> rank;
-    device_only_memory<float> XtWX;
-    device_only_memory<float3> XtWY;
-    int w;
-    int h;
-
-    Storage(Device *device)
-        : transform(device, "denoising transform"),
-          rank(device, "denoising rank"),
-          XtWX(device, "denoising XtWX"),
-          XtWY(device, "denoising XtWY")
-    {
-    }
-  } storage;
-
-  DenoisingTask(Device *device, const DeviceTask &task);
-  ~DenoisingTask();
-
-  void run_denoising(RenderTile &tile);
-
-  struct DenoiseBuffers {
-    int pass_stride;
-    int passes;
-    int stride;
-    int h;
-    int width;
-    int frame_stride;
-    device_only_memory<float> mem;
-    device_only_memory<float> temporary_mem;
-    bool use_time;
-    bool use_intensity;
-
-    bool gpu_temporary_mem;
-
-    DenoiseBuffers(Device *device)
-        : mem(device, "denoising pixel buffer"),
-          temporary_mem(device, "denoising temporary mem", true)
-    {
-    }
-  } buffer;
-
- protected:
-  Device *device;
-
-  void set_render_buffer(RenderTileNeighbors &neighbors);
-  void setup_denoising_buffer();
-  void prefilter_shadowing();
-  void prefilter_features();
-  void prefilter_color();
-  void construct_transform();
-  void reconstruct();
-
-  void load_buffer();
-  void write_buffer();
-};
-
-CCL_NAMESPACE_END
-
-#endif /* __DEVICE_DENOISING_H__ */