af1110fb3c
Add a "Pixel Density" sub-panel to render output settings which can be used to set the density (as pixels per inch for example). This is then written to images that support pixel density. Details: - The scene has two values a PPM factor and a and base unit. - The base unit defaults to pixels per inch as this is the most common unit used. - Unit presets for pixels per inch/centimeter/meter are included. - The pixel density is stored in the render result & EXR cache. - For non 1:1 aspect renders, the density increases on the axis which looks "stretched", so the PPM will print the correct aspect with non-square pixels. Ref !127831
91 lines
2.9 KiB
C++
91 lines
2.9 KiB
C++
/* SPDX-FileCopyrightText: 2024 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup imbuf
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*/
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#pragma once
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/* API for reading and writing multilayer EXR files. */
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/* XXX layer+pass name max 64? */
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/* This api also supports max 8 channels per pass now. easy to fix! */
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#define EXR_LAY_MAXNAME 64
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#define EXR_PASS_MAXNAME 64
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#define EXR_VIEW_MAXNAME 64
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#define EXR_TOT_MAXNAME 64
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#define EXR_PASS_MAXCHAN 24
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struct StampData;
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void *IMB_exr_get_handle();
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void *IMB_exr_get_handle_name(const char *name);
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/**
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* Adds flattened #ExrChannel's
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* `xstride`, `ystride` and `rect` can be done in set_channel too, for tile writing.
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* \param passname: Does not include view.
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*/
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void IMB_exr_add_channel(void *handle,
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const char *layname,
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const char *passname,
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const char *viewname,
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int xstride,
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int ystride,
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float *rect,
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bool use_half_float);
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/**
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* Read from file.
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*/
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bool IMB_exr_begin_read(
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void *handle, const char *filepath, int *width, int *height, bool parse_channels);
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/**
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* Used for output files (from #RenderResult) (single and multi-layer, single and multi-view).
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*/
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bool IMB_exr_begin_write(void *handle,
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const char *filepath,
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int width,
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int height,
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const double ppm[2],
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int compress,
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int quality,
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const StampData *stamp);
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/**
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* Still clumsy name handling, layers/channels can be ordered as list in list later.
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*
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* \param passname: Here is the raw channel name without the layer.
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*/
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bool IMB_exr_set_channel(void *handle,
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const char *layname,
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const char *passname,
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int xstride,
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int ystride,
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float *rect);
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void IMB_exr_read_channels(void *handle);
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void IMB_exr_write_channels(void *handle);
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void IMB_exr_multilayer_convert(void *handle,
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void *base,
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void *(*addview)(void *base, const char *str),
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void *(*addlayer)(void *base, const char *str),
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void (*addpass)(void *base,
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void *lay,
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const char *str,
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float *rect,
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int totchan,
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const char *chan_id,
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const char *view));
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void IMB_exr_close(void *handle);
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void IMB_exr_add_view(void *handle, const char *name);
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bool IMB_exr_has_multilayer(void *handle);
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bool IMB_exr_get_ppm(void *handle, double ppm[2]);
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