Blender  V3.3
image_sky.cpp
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1 /* SPDX-License-Identifier: Apache-2.0
2  * Copyright 2011-2022 Blender Foundation */
3 
4 #include "scene/image_sky.h"
5 
6 #include "sky_model.h"
7 
8 #include "util/image.h"
9 #include "util/log.h"
10 #include "util/path.h"
11 #include "util/task.h"
12 
14 
15 SkyLoader::SkyLoader(float sun_elevation,
16  float altitude,
17  float air_density,
18  float dust_density,
19  float ozone_density)
20  : sun_elevation(sun_elevation),
21  altitude(altitude),
22  air_density(air_density),
23  dust_density(dust_density),
24  ozone_density(ozone_density)
25 {
26 }
27 
29 
31 {
32  metadata.width = 512;
33  metadata.height = 128;
34  metadata.channels = 3;
35  metadata.depth = 1;
36  metadata.type = IMAGE_DATA_TYPE_FLOAT4;
37  metadata.compress_as_srgb = false;
38  return true;
39 }
40 
42  void *pixels,
43  const size_t /*pixels_size*/,
44  const bool /*associate_alpha*/)
45 {
46  /* definitions */
47  int width = metadata.width;
48  int height = metadata.height;
49  float *pixel_data = (float *)pixels;
50 
51  /* precompute sky texture */
52  const int rows_per_task = divide_up(1024, width);
53  parallel_for(blocked_range<size_t>(0, height, rows_per_task),
54  [&](const blocked_range<size_t> &r) {
56  metadata.channels,
57  r.begin(),
58  r.end(),
59  width,
60  height,
61  sun_elevation,
62  altitude,
63  air_density,
64  dust_density,
65  ozone_density);
66  });
67 
68  return true;
69 }
70 
71 string SkyLoader::name() const
72 {
73  return "sky_nishita";
74 }
75 
76 bool SkyLoader::equals(const ImageLoader & /*other*/) const
77 {
78  return false;
79 }
80 
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_GL_VOID GLfloat value _GL_VOID_RET _GL_VOID const GLuint GLboolean *residences _GL_BOOL_RET _GL_VOID GLsizei height
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ImageDataType type
bool load_metadata(const ImageDeviceFeatures &features, ImageMetaData &metadata) override
Definition: image_sky.cpp:30
bool equals(const ImageLoader &) const override
Definition: image_sky.cpp:76
bool load_pixels(const ImageMetaData &metadata, void *pixels, const size_t, const bool) override
Definition: image_sky.cpp:41
string name() const override
Definition: image_sky.cpp:71
SkyLoader(float sun_elevation, float altitude, float air_density, float dust_density, float ozone_density)
Definition: image_sky.cpp:15
#define CCL_NAMESPACE_END
Definition: cuda/compat.h:9
void parallel_for(IndexRange range, int64_t grain_size, const Function &function)
Definition: BLI_task.hh:51
void SKY_nishita_skymodel_precompute_texture(float *pixels, int stride, int start_y, int end_y, int width, int height, float sun_elevation, float altitude, float air_density, float dust_density, float ozone_density)
@ IMAGE_DATA_TYPE_FLOAT4
Definition: util/texture.h:30
ccl_device_inline size_t divide_up(size_t x, size_t y)
Definition: util/types.h:51