Currently, if an image exceed the texture limit setup by the user or the
GPU backend, it will be scaled down to satisfy the limit. However,
scaling happens independently per axis, that means the aspect ratio of
the image will not be maintained.
This patch corrects the smaller size to maintain the aspect ratio.
Differential Revision: https://developer.blender.org/D16327
Reviews By: Clement Foucault
When the image colorspace is not data, linear or sRGB, the image will
be converted to float (and colorspace-converted) during loading.
However, if it also needs to be rescaled (due to exceeding the GPU
texture size limit), the resizing assumed that it's still a byte
texture.
These functions are almost identical, the main difference being
BLI_join_dirfile didn't trim existing slashes when joining paths
however this isn't an important difference that warrants a separate
function.
According to information I gathered, ffmpeg seeks internally using DTS
values instead of PTS. In some files DTS and PTS values are offset and
ffmpeg fails to seek correctly to keyframe located before requested PTS.
This issue become evident after hardcoded preseek of 25 frames was
removed and effort went into more precise seeking to improve
performance. It was thought, that this is bug in ffmpeg code, but
after reading some discussions, I don't think it is considered as such
by their developers, see below:
http://ffmpeg.org/pipermail/ffmpeg-devel/2018-March/226354.htmlhttps://trac.ffmpeg.org/ticket/1189
Best solution seems to be to add small preseek value possibly at
detriment of performance, so 3 frames of preseek are applied. Number 3
was chosen experimentally.
Performance impact seems to be insignificant with this change.
Reviewed By: zeddb
Differential Revision: https://developer.blender.org/D15847
When image data exceeds half float ranges values are set to +/-
infinity that could lead to artifacts later on in the pipeline.
Color management for example.
This patch adds a utility function `IMB_gpu_clamp_half_float`
that clamps full float values to fit within the range of
half floats.
This fixes T98575 and T101601.
This is the conventional way of dealing with unused arguments in C++,
since it works on all compilers.
Regex find and replace: `UNUSED\((\w+)\)` -> `/*$1*/`
Match minimum supported versions from the WIKI [0] by raising them to:
- GCC 9.3.1
- CLANG 8.0
- MVCS 2019 (16.9.16 / 1928)
Details:
- Add CMake checks that ensure supported compiler versions early on.
- Previously GCC per-processor version checks served to exclude
`__clang__`, in some cases this has been replaced by explicitly
excluding `__clang__`. This was needed as CLANG treated some of these
flags differently to GCC, causing the build to fail.
- Remove USE_APPLE_OMP_FIX GCC-4.2 OpenMP workaround.
- Remove linking error workaround for old MSVC versions.
[0]: https://wiki.blender.org/wiki/Building_Blender
Reviewed by: brecht, LazyDodo
Ref D16068
Thumbnails of fonts that better show design, shapes, contents, intent,
and intended language. Previews almost every known language - living
and dead - and symbol, specialty fonts, etc.
See D12032 for more details and samples.
Differential Revision: https://developer.blender.org/D12032
Reviewed by Campbell Barton
Update the animation's dimensions within ffmpeg_fetchibuf in case it
has changed because of dynamic resolution (possible with WebM).
Differential Revision: https://developer.blender.org/D15842
Reviewed by Richard Antalik
Some files have 2 different framerates stored in metadata. Use function
`av_guess_frame_rate` to get media FPS, because it provides more
consistent / correct values across multiple files.
Reviewed By: sergey
Differential Revision: https://developer.blender.org/D15839
Fix error and warnings introduced in commit 8851790dd7. Include
unistd.h for close() on Non-Windows OSs. Calm warnings about unused
argument. Return full size of image file to caller.
Own Code.
Thumbnail WebP images quicker while using much less RAM.
See D15908 for more details.
Differential Revision: https://developer.blender.org/D15908
Reviewed by Brecht Van Lommel
This is done by checking the number of bitplanes from the image buffer.
We assume that for float buffer to use the same bitplanes as it was a
byte buffer.
Then, the data of the image buffer is packed at the start of the `rect` or
`float_rect` before upload.
**Statistics - einar.v004.blend **
Note that not all grayscale textures have been stored as BW images so the
amount of memory that can be reduced would be more.
Without patch
```
104 Textures - 3294.99 MB (3294.47 MB over 32x32), 37 RTs - 192.52 MB.
Avg. tex dimension: 2201.88x1253.51 (2283.53x2202.13 over 32x32)
464 Buffers - 25.01 MB total 1.24 MB IBs 23.50 MB VBs.
3512.52 MB - Grand total GPU buffer + texture load
```
Patch applied
```
104 Textures - 2917.66 MB (2917.14 MB over 32x32), 39 RTs - 215.45 MB.
Avg. tex dimension: 2221.38x1252.75 (2323.28x2253.47 over 32x32)
467 Buffers - 25.01 MB total 1.24 MB IBs 23.51 MB VBs.
3158.13 MB - Grand total GPU buffer + texture load.
```
Reviewed By: fclem
Differential Revision: https://developer.blender.org/D15484
Add IMB_gpu_get_texture_format and GPU_texture_format_description to
retrieve and 'stringify' an eGPUTextureFormat. These are then used in the
image info panel used in several areas across blender.
New Information:
{F13330937}
Reviewed By: jbakker
Maniphest Tasks: T99998
Differential Revision: https://developer.blender.org/D15575
From quick look it doesn't seem to be leading to real issues yet as the
image buffers are created with the default roles, but valid color space
is needed to be ensured for an upcoming development.
Variable frame rate (VFR) files have been difficult to work with.
This is because during sequential decoding, spacing between frames is
not always equal, but it was assumed to be equal. This can result in
movie getting out of sync with sound and difference between preview and
rendered image. A way to resolve these issues was to build and use
timecodes which is quite lengthy and resource intensive process. Such
issues are also difficult to communicate through UI because it is not
possible to predict if timecode usage would be needed.
With this patch, double buffer is used to keep previously decoded frame.
If current frame has PTS greater than what we are looking for, it is not
time to display it yet, and previous frame is displayed instead.
Each `AVFrame` has information about it's duration, so in theory double
buffering would not be needed, but in practice this information is
unreliable.
To ensure double buffer is always used, function
`ffmpeg_decode_video_frame_scan` is used for sequential decoding, even
if no scanning is expected.
This approach is similar to D6392, but this implementation does not
require seeking so it is much faster. Currently `AVFrame` is only
referenced, so no data is copied and therefore no overhead is added.
Note: There is one known issue where seeking fails even with double
buffering: Some files may seek too far in stream and miss requested
PTS. These require preseeking or greater negative subframe offset
Fixes: T86361, T72347
Reviewed By: zeddb, sergey
Differential Revision: https://developer.blender.org/D13583
