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Commit Graph
37 Commits
Author SHA1 Message Date
Philip Rideout c71c7c70d4 imageio: split HDRDecoder into its own file 2021-05-21 12:36:43 -07:00
Romain Guy 3e6ee4ca5e Fix libimageio's HDR format decoder (#2653) 
See https://cbloomrants.blogspot.com/2020/06/widespread-error-in-radiance-hdr-rgbe.html
 2020-06-08 11:48:11 -07:00
Romain Guy c28d9ddb9d Fix support of paletted images and alpha channel in imageio (#2420) 2020-04-18 16:32:05 -07:00
Philip Rideout 898ed70aa0 Remove <iostream> from math headers. 
This speeds up our build time by using <iosfwd> and un-inlining the
vector print functions.
 2020-01-06 15:09:06 -08:00
Philip Rideout 6d0f8c9ead cmgen: add support for non-RLE HDR images. 
The new conditional is cribbed from STB, which checks the first three
bytes.

Fixes #1937.
 2019-12-06 08:45:12 -08:00
Romain Guy b96b8eb787 Encode sRGB images as sRGB, not linear (#1646) 
Fixes #1608
 2019-09-16 10:51:17 -07:00
Romain Guy 826d52bca2 Fix Windows build and warnings 2019-06-27 09:18:31 -07:00
Mathias Agopian 2ded1c955f cmgen and filament now support RGB_10_11_11_REV 
- RGB_11_11_10 is exported in a RGBA PNG file where the 4 channels are
  used as a uint32 storing a RGB_10_11_11_REV pixel.
  We use the .rgb32f extension, and those PNG files contain garbage 
  when seen in a PNG viewer.

- This is now the default for the -x option.

- compressed KTX files don't encode RGBM, which means they can't
  support HDR, unless an HDR compression scheme is used.
 2019-06-20 14:36:37 -07:00
Mathias Agopian 99a501f0c3 fix s3tc compression with HDR input 
HDR input where producing garbage pixels, instead we saturate.
 2019-06-20 14:36:37 -07:00
prideout 5ee359cf40 Move math namespace to fix #746. 2019-02-07 09:23:07 -08:00
Romain Guy 66d71be300 Fix HDR ImageDecoder for width < 8 or > 32767 2019-01-28 15:16:53 -08:00
Romain Guy 614a832be0 Code cleanup in ImageDecoder.cpp 2019-01-28 15:16:53 -08:00
Romain Guy c1b7f2ac27 Property write small .hdr files (#750) 
* Cleanup ImageEncoder code

* Properly write HDR files when width < 8 or > 32767

A little oddity in the original Radiance file format encoding.
 2019-01-28 14:02:28 -08:00
Romain Guy 9ce88e6e23 Improve skygen (#679) 
Bring back the normalization and gamma correction command line flags,
render the ground in the lower half of the image.
 2019-01-08 07:19:50 -08:00
Adrian Perez aa980682e6 Remove using std::string (#356) 2018-10-09 10:34:12 -07:00
Philip Rideout 5ac2c96cb5 Fix typo in ETC compression string. 2018-10-05 15:25:06 -07:00
Philip Rideout da698f2e36 Add high level compression API to prep for cmgen integration. 2018-10-05 10:11:48 -07:00
Philip Rideout eed2f72466 Implement TODO items for ASTC encoding. 
These presets are copied over from the ARM standalone tool. I have not
tested them but they seem reasonable.
 2018-10-04 14:29:18 -07:00
Philip Rideout 37a42ee854 Enable ETC for Suzanne normal map. 
Due to an assertion in etc2comp, this unfortunately uses RGB8 instead of
RG11 but it still helps quite a bit (3.3 MB savings in the unzipped KTX
size).
 2018-10-03 12:35:34 -07:00
Philip Rideout cc61e4649b Add ETC support to mipgen / imageio / suzanne. 
This shrinks file size as follows, although it seems to darken the
rendered result.

```
  1398209 Oct  2 16:22 ao.ktx
   699172 Oct  2 16:20 ao_etc.ktx
  1398209 Oct  2 16:22 metallic.ktx
   699172 Oct  2 16:19 metallic_etc.ktx
  1398209 Oct  2 16:22 roughness.ktx
   699172 Oct  2 16:20 roughness_etc.ktx
```
 2018-10-02 21:57:22 -07:00
Philip Rideout 3185d0f237 Add S3TC support to imageio and Suzanne. 
At build time, mipgen now creates several compressed and non-compressed
variants for albedo.

For ASTC we use the ARM encoder, for S3TC we use the STB encoder. The
latter is somewhat limited so we may wish to investigate other libraries
in the future (e.g., AMD Compressenator).

At run time, we detect which of these variants to download, based on
available WebGL extensions. In practice, this means that desktop
browsers will use the S3TC variant and mobile browsers will use the ASTC
variant.

The makes unzipped albedo go from ~4 MB to 682 KB using S3TC.

Mobile support (ASTC and ETC2) is coming in a future PR, stay tuned.
 2018-10-01 14:34:21 -07:00
Philip Rideout 6ed331d74c Add compression to mipgen and change bitrate to block size. 
The compression API now takes block size instead of bit rate. Otherwise
it is quite possible for the encoder to generate a block size that is
not one of the valid block sizes that graphics API's can actually
consume.
 2018-09-28 16:33:41 -07:00
Philip Rideout 17cfd55d3c Introduce compression API to imageio. 
This wraps ARM's open source encoder with a reasonable interface.
 2018-09-28 09:42:09 -07:00
prideout 3f751f3850 cmgen and mipgen should return an error code upon failure. 
These tools can be used in an asset pipeline; build scripts should not
be required to parse stdout in order to determine success.
 2018-09-17 14:51:29 -07:00
Philip Rideout 4665805d81 Minor improvements to EXR decoding. (#177) 
See also #176.

This closes #166.
 2018-08-28 14:38:54 -07:00
Philip Rideout aa518369b4 Move deprecated Image out of libs. (#125) 
This moves the old Image class into cmgen because it is the only client
that still uses it. We can migrate cmgen to LinearImage in the future.
 2018-08-23 10:19:02 -07:00
Philip Rideout 07e4db795f Remove lots of reinterpret_cast. (#112) 
* Remove lots of reinterpret_cast.

* Improve terseness with auto.
 2018-08-17 12:01:32 -07:00
Philip Rideout 044387308a Migrate imageio to LinearImage. (#111) 2018-08-17 11:22:05 -07:00
Philip Rideout 6d9668ccf6 Add unit test for cross cube images. (#101) 2018-08-15 15:36:17 -07:00
Philip Rideout 5a027ca5a2 Replace deprecated color xform funcs. (#96) 2018-08-14 15:19:40 -07:00
Philip Rideout b5b90b83f8 Add test_cmgen and promote the "updateOrCompare" function. (#95) 2018-08-14 13:47:31 -07:00
Philip Rideout 07c34ee833 Simplify Image by flipping RADIANCE images. (#63) 
* Simplify Image by flipping RADIANCE images.

Unit test for the new flip() method is forthcoming.

* Optimize image flipping.
 2018-08-09 17:30:17 -07:00
Philip Rideout 69b65d9e2d Rename ColorSpace header to ColorTransform. (#61) 2018-08-09 15:54:18 -07:00
Philip Rideout 9ed20705ec Refactor color space utilities. (#58) 
* Refactor color space utilities.

* Repair Android build.
 2018-08-09 13:58:58 -07:00
Mathias Agopian a6877d5baa Fix cmgen cross cubmap input 
Fixes bug #45
 2018-08-08 16:50:02 -07:00
emmcbd de1743c572 Fix huge memory allocation when decoding PNG, which can end up with std::bad_alloc (#43) 2018-08-08 07:45:57 -07:00
Philip Rideout f8a8098e0f Split off imageio lib from image. (#36) 
* Split off imageio lib from image.

* Remove duplicated math funcs.
 2018-08-07 16:38:04 -07:00