forked from godotengine/godot
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
6 changed files
with
347 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,279 @@ | ||
/*************************************************************************/ | ||
/* image_saver_tinyexr.cpp */ | ||
/*************************************************************************/ | ||
/* This file is part of: */ | ||
/* GODOT ENGINE */ | ||
/* https://godotengine.org */ | ||
/*************************************************************************/ | ||
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */ | ||
/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md) */ | ||
/* */ | ||
/* Permission is hereby granted, free of charge, to any person obtaining */ | ||
/* a copy of this software and associated documentation files (the */ | ||
/* "Software"), to deal in the Software without restriction, including */ | ||
/* without limitation the rights to use, copy, modify, merge, publish, */ | ||
/* distribute, sublicense, and/or sell copies of the Software, and to */ | ||
/* permit persons to whom the Software is furnished to do so, subject to */ | ||
/* the following conditions: */ | ||
/* */ | ||
/* The above copyright notice and this permission notice shall be */ | ||
/* included in all copies or substantial portions of the Software. */ | ||
/* */ | ||
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ | ||
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ | ||
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ | ||
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ | ||
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ | ||
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ | ||
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ | ||
/*************************************************************************/ | ||
|
||
#include "image_saver_tinyexr.h" | ||
#include "core/math/math_funcs.h" | ||
|
||
#include "thirdparty/tinyexr/tinyexr.h" | ||
|
||
static bool is_supported_format(Image::Format p_format) { | ||
// This is checked before anything else. | ||
// Mostly uncompressed formats are considered. | ||
switch (p_format) { | ||
case Image::FORMAT_RF: | ||
case Image::FORMAT_RGF: | ||
case Image::FORMAT_RGBF: | ||
case Image::FORMAT_RGBAF: | ||
case Image::FORMAT_RH: | ||
case Image::FORMAT_RGH: | ||
case Image::FORMAT_RGBH: | ||
case Image::FORMAT_RGBAH: | ||
case Image::FORMAT_R8: | ||
case Image::FORMAT_RG8: | ||
case Image::FORMAT_RGB8: | ||
case Image::FORMAT_RGBA8: | ||
return true; | ||
default: | ||
return false; | ||
} | ||
} | ||
|
||
enum SrcPixelType { | ||
SRC_FLOAT, | ||
SRC_HALF, | ||
SRC_BYTE | ||
}; | ||
|
||
static SrcPixelType get_source_pixel_type(Image::Format p_format) { | ||
switch (p_format) { | ||
case Image::FORMAT_RF: | ||
case Image::FORMAT_RGF: | ||
case Image::FORMAT_RGBF: | ||
case Image::FORMAT_RGBAF: | ||
return SRC_FLOAT; | ||
case Image::FORMAT_RH: | ||
case Image::FORMAT_RGH: | ||
case Image::FORMAT_RGBH: | ||
case Image::FORMAT_RGBAH: | ||
return SRC_HALF; | ||
case Image::FORMAT_R8: | ||
case Image::FORMAT_RG8: | ||
case Image::FORMAT_RGB8: | ||
case Image::FORMAT_RGBA8: | ||
return SRC_BYTE; | ||
default: | ||
CRASH_NOW(); | ||
} | ||
} | ||
|
||
static int get_target_pixel_type(Image::Format p_format) { | ||
switch (p_format) { | ||
case Image::FORMAT_RF: | ||
case Image::FORMAT_RGF: | ||
case Image::FORMAT_RGBF: | ||
case Image::FORMAT_RGBAF: | ||
return TINYEXR_PIXELTYPE_FLOAT; | ||
case Image::FORMAT_RH: | ||
case Image::FORMAT_RGH: | ||
case Image::FORMAT_RGBH: | ||
case Image::FORMAT_RGBAH: | ||
// EXR doesn't support 8-bit channels so in that case we'll convert | ||
case Image::FORMAT_R8: | ||
case Image::FORMAT_RG8: | ||
case Image::FORMAT_RGB8: | ||
case Image::FORMAT_RGBA8: | ||
return TINYEXR_PIXELTYPE_HALF; | ||
default: | ||
CRASH_NOW(); | ||
} | ||
} | ||
|
||
static int get_pixel_type_size(int p_pixel_type) { | ||
switch (p_pixel_type) { | ||
case TINYEXR_PIXELTYPE_HALF: | ||
return 2; | ||
case TINYEXR_PIXELTYPE_FLOAT: | ||
return 4; | ||
} | ||
CRASH_NOW(); | ||
} | ||
|
||
static int get_channel_count(Image::Format p_format) { | ||
switch (p_format) { | ||
case Image::FORMAT_RF: | ||
case Image::FORMAT_RH: | ||
case Image::FORMAT_R8: | ||
return 1; | ||
case Image::FORMAT_RGF: | ||
case Image::FORMAT_RGH: | ||
case Image::FORMAT_RG8: | ||
return 2; | ||
case Image::FORMAT_RGBF: | ||
case Image::FORMAT_RGBH: | ||
case Image::FORMAT_RGB8: | ||
return 3; | ||
case Image::FORMAT_RGBAF: | ||
case Image::FORMAT_RGBAH: | ||
case Image::FORMAT_RGBA8: | ||
return 4; | ||
default: | ||
CRASH_NOW(); | ||
} | ||
} | ||
|
||
Error save_exr(const String &p_path, const Ref<Image> &p_img, bool p_grayscale) { | ||
|
||
Image::Format format = p_img->get_format(); | ||
|
||
if (!is_supported_format(format)) { | ||
// Format not supported | ||
print_error("Image format not supported for saving as EXR. Consider saving as PNG."); | ||
return ERR_UNAVAILABLE; | ||
} | ||
|
||
EXRHeader header; | ||
InitEXRHeader(&header); | ||
|
||
EXRImage image; | ||
InitEXRImage(&image); | ||
|
||
const int max_channels = 4; | ||
|
||
// Godot does not support more than 4 channels, | ||
// so we can preallocate header infos on the stack and use only the subset we need | ||
PoolByteArray channels[max_channels]; | ||
unsigned char *channels_ptrs[max_channels]; | ||
EXRChannelInfo channel_infos[max_channels]; | ||
int pixel_types[max_channels]; | ||
int requested_pixel_types[max_channels] = { -1 }; | ||
|
||
// Gimp and Blender are a bit annoying so order of channels isn't straightforward. | ||
const int channel_mappings[4][4] = { | ||
{ 0 }, // R | ||
{ 1, 0 }, // GR | ||
{ 2, 1, 0 }, // BGR | ||
{ 2, 1, 0, 3 } // BGRA | ||
}; | ||
|
||
int channel_count = get_channel_count(format); | ||
ERR_FAIL_COND_V(p_grayscale && channel_count != 1, ERR_INVALID_PARAMETER); | ||
|
||
int target_pixel_type = get_target_pixel_type(format); | ||
int target_pixel_type_size = get_pixel_type_size(target_pixel_type); | ||
SrcPixelType src_pixel_type = get_source_pixel_type(format); | ||
const int pixel_count = p_img->get_width() * p_img->get_height(); | ||
|
||
const int *channel_mapping = channel_mappings[channel_count - 1]; | ||
|
||
{ | ||
PoolByteArray src_data = p_img->get_data(); | ||
PoolByteArray::Read src_r = src_data.read(); | ||
|
||
for (int channel_index = 0; channel_index < channel_count; ++channel_index) { | ||
|
||
// De-interleave channels | ||
|
||
PoolByteArray &dst = channels[channel_index]; | ||
dst.resize(pixel_count * target_pixel_type_size); | ||
|
||
PoolByteArray::Write dst_w = dst.write(); | ||
|
||
if (src_pixel_type == SRC_FLOAT && target_pixel_type == TINYEXR_PIXELTYPE_FLOAT) { | ||
|
||
// Note: we don't save mipmaps | ||
CRASH_COND(src_data.size() < pixel_count * channel_count * target_pixel_type_size); | ||
|
||
const float *src_rp = (float *)src_r.ptr(); | ||
float *dst_wp = (float *)dst_w.ptr(); | ||
|
||
for (int i = 0; i < pixel_count; ++i) { | ||
dst_wp[i] = src_rp[channel_index + i * channel_count]; | ||
} | ||
|
||
} else if (src_pixel_type == SRC_HALF && target_pixel_type == TINYEXR_PIXELTYPE_HALF) { | ||
|
||
CRASH_COND(src_data.size() < pixel_count * channel_count * target_pixel_type_size); | ||
|
||
const uint16_t *src_rp = (uint16_t *)src_r.ptr(); | ||
uint16_t *dst_wp = (uint16_t *)dst_w.ptr(); | ||
|
||
for (int i = 0; i < pixel_count; ++i) { | ||
dst_wp[i] = src_rp[channel_index + i * channel_count]; | ||
} | ||
|
||
} else if (src_pixel_type == SRC_BYTE && target_pixel_type == TINYEXR_PIXELTYPE_HALF) { | ||
|
||
CRASH_COND(src_data.size() < pixel_count * channel_count); | ||
|
||
const uint8_t *src_rp = (uint8_t *)src_r.ptr(); | ||
uint16_t *dst_wp = (uint16_t *)dst_w.ptr(); | ||
|
||
for (int i = 0; i < pixel_count; ++i) { | ||
dst_wp[i] = Math::make_half_float(src_rp[channel_index + i * channel_count] / 255.f); | ||
} | ||
|
||
} else { | ||
CRASH_NOW(); | ||
} | ||
|
||
int remapped_index = channel_mapping[channel_index]; | ||
|
||
channels_ptrs[remapped_index] = dst_w.ptr(); | ||
|
||
// No conversion | ||
pixel_types[remapped_index] = target_pixel_type; | ||
requested_pixel_types[remapped_index] = target_pixel_type; | ||
|
||
// Write channel name | ||
if (p_grayscale) { | ||
channel_infos[remapped_index].name[0] = 'Y'; | ||
channel_infos[remapped_index].name[1] = '\0'; | ||
} else { | ||
const char *rgba = "RGBA"; | ||
channel_infos[remapped_index].name[0] = rgba[channel_index]; | ||
channel_infos[remapped_index].name[1] = '\0'; | ||
} | ||
} | ||
} | ||
|
||
image.images = channels_ptrs; | ||
image.num_channels = channel_count; | ||
image.width = p_img->get_width(); | ||
image.height = p_img->get_height(); | ||
|
||
header.num_channels = image.num_channels; | ||
header.channels = channel_infos; | ||
header.pixel_types = pixel_types; | ||
header.requested_pixel_types = requested_pixel_types; | ||
// TODO DEBUG REMOVE | ||
for (int i = 0; i < 4; ++i) { | ||
print_line(String("requested_pixel_types{0}: {1}").format(varray(i, requested_pixel_types[i]))); | ||
} | ||
|
||
CharString utf8_filename = p_path.utf8(); | ||
const char *err; | ||
int ret = SaveEXRImageToFile(&image, &header, utf8_filename.ptr(), &err); | ||
if (ret != TINYEXR_SUCCESS) { | ||
print_error(String("Saving EXR failed. Error: {0}").format(varray(err))); | ||
return ERR_FILE_CANT_WRITE; | ||
} | ||
|
||
return OK; | ||
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,38 @@ | ||
/*************************************************************************/ | ||
/* image_saver_tinyexr.h */ | ||
/*************************************************************************/ | ||
/* This file is part of: */ | ||
/* GODOT ENGINE */ | ||
/* https://godotengine.org */ | ||
/*************************************************************************/ | ||
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */ | ||
/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md) */ | ||
/* */ | ||
/* Permission is hereby granted, free of charge, to any person obtaining */ | ||
/* a copy of this software and associated documentation files (the */ | ||
/* "Software"), to deal in the Software without restriction, including */ | ||
/* without limitation the rights to use, copy, modify, merge, publish, */ | ||
/* distribute, sublicense, and/or sell copies of the Software, and to */ | ||
/* permit persons to whom the Software is furnished to do so, subject to */ | ||
/* the following conditions: */ | ||
/* */ | ||
/* The above copyright notice and this permission notice shall be */ | ||
/* included in all copies or substantial portions of the Software. */ | ||
/* */ | ||
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ | ||
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ | ||
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ | ||
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ | ||
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ | ||
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ | ||
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ | ||
/*************************************************************************/ | ||
|
||
#ifndef IMAGE_SAVER_TINYEXR_H | ||
#define IMAGE_SAVER_TINYEXR_H | ||
|
||
#include "core/os/os.h" | ||
|
||
Error save_exr(const String &p_path, const Ref<Image> &p_img, bool p_grayscale); | ||
|
||
#endif // IMAGE_SAVER_TINYEXR_H |
Oops, something went wrong.