Tests: Add tests for image format saving and loading #104442
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Reference: blender/blender#104442
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Delete Branch "deadpin:image-tests"
Deleting a branch is permanent. Although the deleted branch may continue to exist for a short time before it actually gets removed, it CANNOT be undone in most cases. Continue?
This adds saving and loading tests for our supported image formats.
Saving - bf_imbuf_save.py
There are 2 template images which are loaded anew for each file save
attempt. One is an 8-bit RGBA image and the other 32-bit. This is
required as many formats use a variety of factors to determine which of
ibuf->rect
oribuf->rectfloat
to use for processing. The templatesare constructed to have alpha transparency as well as values > 1 (or
clamped to 1 for the case of the 8-bit template).
Test flow:
Notes:
Loading - bf_imbuf_load.py
Test flow:
Notes:
A HTML report is not implemented. The diff output organization is very
similar to the other tests so it should be somewhat easy to do in the
future if we want.
The standard set of environment variables are implemented for both:
BLENDER_TEST_UPDATE, BLENDER_VERBOSE, and BLENDER_TEST_COLOR
Test files
The SVN test files are attached.
There's a variety of images which are probably "incorrect" with current master.
Their reference comparisons will pass, so the tests won't fail, but they look incorrect in Blender or other software.
I believe most/all of these images will be corrected once OIIO is used for saving/loading.
In the provided SVN zip file, check the following for some examples:
reference/png-bw-16-25__from__rgba32.png
--> color shift compared to other BW variantsreference/dpx-rgb-08-false__from__rgba08.dpx
--> too darkreference/dpx-*-true*.dpx
--> broken alpha? (these have use_cineon_log = True)Looks fine overall, only minor nitpicks.
@ -0,0 +7,4 @@
import bpy
sys.path.append(os.path.dirname(os.path.realpath(__file__)))
We're trying to move away from os.path towards pathlib. I think removing the few usages in the new code in this patch is relatively straightforward.
@ -0,0 +34,4 @@
actual_metadata = f"{channels=} {is_float=} {colorspace=} {alpha_mode=}"
# Save actual metadata
with open(out_metadata_path, "w+") as meta:
Can just be
"w"
?Or better
out_metadata_path.write_text(out_metadata_path)
when usingpathlib
.@ -0,0 +57,4 @@
if failed and self.update:
# Update reference metadata if requested.
with open(ref_metadata_path, "w+") as meta:
Same comment.
@ -0,0 +9,4 @@
args = None
class COLORS_ANSI:
Can we deduplicate this colored printing code with other test modules?
Sorry, I rebased this branch before knowing the rule not to. The additional 4 commits that came in are organized
accordingly though.
No problem, it's not a hard rule and I only edited the wiki page to recommend it a few days ago.
@blender-bot build
@blender-bot build
Pull request closed