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, 140 deletions

diff --git a/intern/cycles/kernel/filter/filter_reconstruction.h b/intern/cycles/kernel/filter/filter_reconstruction.h
deleted file mode 100644
index 17941689ad5..00000000000
--- a/intern/cycles/kernel/filter/filter_reconstruction.h
+++ /dev/null
@@ -1,140 +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.
- */
-
-CCL_NAMESPACE_BEGIN
-
-ccl_device_inline void kernel_filter_construct_gramian(int x,
-                                                       int y,
-                                                       int storage_stride,
-                                                       int dx,
-                                                       int dy,
-                                                       int t,
-                                                       int buffer_stride,
-                                                       int pass_stride,
-                                                       int frame_offset,
-                                                       bool use_time,
-                                                       const ccl_global float *ccl_restrict buffer,
-                                                       const ccl_global float *ccl_restrict
-                                                           transform,
-                                                       ccl_global int *rank,
-                                                       float weight,
-                                                       ccl_global float *XtWX,
-                                                       ccl_global float3 *XtWY,
-                                                       int localIdx)
-{
-  if (weight < 1e-3f) {
-    return;
-  }
-
-  int p_offset = y * buffer_stride + x;
-  int q_offset = (y + dy) * buffer_stride + (x + dx) + frame_offset;
-
-#ifdef __KERNEL_GPU__
-  const int stride = storage_stride;
-#else
-  const int stride = 1;
-  (void)storage_stride;
-#endif
-
-#ifdef __KERNEL_CUDA__
-  ccl_local float shared_design_row[(DENOISE_FEATURES + 1) * CCL_MAX_LOCAL_SIZE];
-  ccl_local_param float *design_row = shared_design_row + localIdx * (DENOISE_FEATURES + 1);
-#else
-  float design_row[DENOISE_FEATURES + 1];
-#endif
-
-  float3 q_color = filter_get_color(buffer + q_offset, pass_stride);
-
-  /* If the pixel was flagged as an outlier during prefiltering, skip it. */
-  if (ccl_get_feature(buffer + q_offset, 0) < 0.0f) {
-    return;
-  }
-
-  filter_get_design_row_transform(make_int3(x, y, t),
-                                  buffer + p_offset,
-                                  make_int3(x + dx, y + dy, t),
-                                  buffer + q_offset,
-                                  pass_stride,
-                                  *rank,
-                                  design_row,
-                                  transform,
-                                  stride,
-                                  use_time);
-
-#ifdef __KERNEL_GPU__
-  math_trimatrix_add_gramian_strided(XtWX, (*rank) + 1, design_row, weight, stride);
-  math_vec3_add_strided(XtWY, (*rank) + 1, design_row, weight * q_color, stride);
-#else
-  math_trimatrix_add_gramian(XtWX, (*rank) + 1, design_row, weight);
-  math_vec3_add(XtWY, (*rank) + 1, design_row, weight * q_color);
-#endif
-}
-
-ccl_device_inline void kernel_filter_finalize(int x,
-                                              int y,
-                                              ccl_global float *buffer,
-                                              ccl_global int *rank,
-                                              int storage_stride,
-                                              ccl_global float *XtWX,
-                                              ccl_global float3 *XtWY,
-                                              int4 buffer_params,
-                                              int sample)
-{
-#ifdef __KERNEL_GPU__
-  const int stride = storage_stride;
-#else
-  const int stride = 1;
-  (void)storage_stride;
-#endif
-
-  if (XtWX[0] < 1e-3f) {
-    /* There is not enough information to determine a denoised result.
-     * As a fallback, keep the original value of the pixel. */
-    return;
-  }
-
-  /* The weighted average of pixel colors (essentially, the NLM-filtered image).
-   * In case the solution of the linear model fails due to numerical issues or
-   * returns nonsensical negative values, fall back to this value. */
-  float3 mean_color = XtWY[0] / XtWX[0];
-
-  math_trimatrix_vec3_solve(XtWX, XtWY, (*rank) + 1, stride);
-
-  float3 final_color = XtWY[0];
-  if (!isfinite3_safe(final_color) ||
-      (final_color.x < -0.01f || final_color.y < -0.01f || final_color.z < -0.01f)) {
-    final_color = mean_color;
-  }
-
-  /* Clamp pixel value to positive values and reverse the highlight compression transform. */
-  final_color = color_highlight_uncompress(max(final_color, make_float3(0.0f, 0.0f, 0.0f)));
-
-  ccl_global float *combined_buffer = buffer + (y * buffer_params.y + x + buffer_params.x) *
-                                                   buffer_params.z;
-  if (buffer_params.w >= 0) {
-    final_color *= sample;
-    if (buffer_params.w > 0) {
-      final_color.x += combined_buffer[buffer_params.w + 0];
-      final_color.y += combined_buffer[buffer_params.w + 1];
-      final_color.z += combined_buffer[buffer_params.w + 2];
-    }
-  }
-  combined_buffer[0] = final_color.x;
-  combined_buffer[1] = final_color.y;
-  combined_buffer[2] = final_color.z;
-}
-
-CCL_NAMESPACE_END