Add Chromium-only Blender WebEngine parity work

blender-5.2.0/intern/cycles/scene/image_sky.cpp

@@ -0,0 +1,89 @@
+/* SPDX-FileCopyrightText: 2011-2022 Blender Foundation
+ *
+ * SPDX-License-Identifier: Apache-2.0 */
+
+#include "scene/image_sky.h"
+
+#include "util/image_metadata.h"
+
+#include "sky_nishita.h"
+
+CCL_NAMESPACE_BEGIN
+
+SkyLoader::SkyLoader(const bool multiple_scattering,
+                     const float sun_elevation,
+                     const float altitude,
+                     const float air_density,
+                     const float aerosol_density,
+                     const float ozone_density)
+    : multiple_scattering(multiple_scattering),
+      sun_elevation(sun_elevation),
+      altitude(altitude),
+      air_density(air_density),
+      aerosol_density(aerosol_density),
+      ozone_density(ozone_density)
+{
+}
+
+SkyLoader::~SkyLoader() = default;
+
+bool SkyLoader::load_metadata(ImageMetaData &metadata,
+                              const ImageLoaderParams & /*params*/,
+                              Progress & /*progress*/)
+{
+  metadata.width = 512;
+  metadata.height = 256;
+  metadata.channels = 3;
+  metadata.type = IMAGE_DATA_TYPE_FLOAT4;
+  metadata.is_compressible_as_srgb = false;
+  return true;
+}
+
+bool SkyLoader::load_pixels(const ImageMetaData &metadata, void *pixels)
+{
+  /* Precompute Sky LUT */
+  int width = metadata.width;
+  int height = metadata.height;
+  float *pixel_data = (float *)pixels;
+  if (multiple_scattering) {
+    SKY_multiple_scattering_precompute_texture(pixel_data,
+                                               metadata.channels,
+                                               width,
+                                               height,
+                                               sun_elevation,
+                                               altitude,
+                                               air_density,
+                                               aerosol_density,
+                                               ozone_density);
+  }
+  else {
+    SKY_single_scattering_precompute_texture(pixel_data,
+                                             metadata.channels,
+                                             width,
+                                             height,
+                                             sun_elevation,
+                                             altitude,
+                                             air_density,
+                                             aerosol_density,
+                                             ozone_density);
+  }
+
+  metadata.conform_pixels(pixels);
+  return true;
+}
+
+string SkyLoader::name() const
+{
+  return "sky_multiple_scattering";
+}
+
+bool SkyLoader::equals(const ImageLoader &other) const
+{
+  const SkyLoader &other_sky = (const SkyLoader &)other;
+  return multiple_scattering == other_sky.multiple_scattering &&
+         sun_elevation == other_sky.sun_elevation && altitude == other_sky.altitude &&
+         air_density == other_sky.air_density && aerosol_density == other_sky.aerosol_density &&
+         ozone_density == other_sky.ozone_density;
+}
+
+CCL_NAMESPACE_END