This also adds a -t flag to the easy build script for convenience.
SwiftShader on Vulkan can now be used as follows.
git clone https://github.com/google/swiftshader.git
cd swiftshader/build
cmake .. && make -j && export SWIFTSHADER_LD_LIBRARY_PATH=`pwd`
cd ../filament
./build.sh -t debug && ./out/cmake-debug/samples/gltf_viewer -a vulkan
Note that third_party/swiftshader does not need to exist since we
already have Vulkan headers. I will remove it in a subsequent PR.
* Add quality option to ColorGrading
Low: 16x16x16 LUT in 10 bit
Medium: 32x32x32 LUT in 10 bit
High: 32x32x32 LUT in 16 bit
Ultra: 64x64x64 LUT in 16 bit
* Move comment
- Allow JavaScript and Java / Kotlin clients to configure this setting.
- Opt in by default (this was disabled in #2621)
- Optimize large assets like Bistro by iterating through prims only when
the asset actually has skins.
Fixes#2714.
* Add transforms for ACEScct and enabling/disabling color grading in sample
* Add saturation and contrast adjustments
* Rename ACES to ACES_LEGACY and introduce ACES
ACES_LEGACY is ACES with a brightness boost to match our old
tone mapping operator.
* Add new color grading feature: shadows/mid-tones/highlights
This feature can be used to color correct specific tonal ranges.
The tonal zones can be precisely controlled.
glTF assets are required to provide min/max attributes for POSITION,
so in theory we never need to compute the AABB. However the option is
still there.
This PR also makes it so that Java clients can choose this option,
previously it was hardcoded for all non-native clients.
* Add the ability to set a ColorGrading LUT per View
In this change, material_sandbox allows to change the tone mapping
operator at runtime.
* Add Mathematica notebook used to explore white balance
The implementation is meant to reproduce the temperature/tint sliders
founds in Adobe Lightroom. The temperature can be offset from 2,000K
to 50,000K using a slider between -100 and +100 (-1.0 to 1.0 in our
API). The range of tint was modelled after the range used for the
temperature.
* Fix various issues
- A refactoring wrongly remamed the color grading pass
- Setting a View's ColorGrading to null selects the
default color grading options
* Implement white balance in ColorGrading
* Prep work for proper color grading
* Bring back local colorGrading bool to drive that pass
* Fix formatting issue
* Add missing case for the color grading pass
* Fix formatting issues
* Formatting issues
These changes make it easier to test headless rendering in macOS.
I verified that this works using the frame_generator tool, however
it requires the fixes in PR #2529.
- there was a case where setting a clear color on the Renderer
would clear a blended view with that color instead of transparent
pixels.
- move configuring the ui view into ImGuiHelper
- fix gltf_viewer sidebar so its background is not uninitialized
This adds a new "backend_headers" target because small changes to any
backend cpp file was resulting in a huge build, causing materials to be
rebuilt, etc. Note that filabridge only needs DriverEnums, nothing else.
Emissive was previously defined in exposure compensation stops, which
was confusing to many. It is now a value in nits, with the alpha
channel controlling how much the camera exposure affects the emissive.
At 0, the emissive value is just added to the final pixel color, at
1 the emissive value is multiplied by the exposure just like with
regular lights.
The intensity of the emissive property can be computed from an
exposure value (EV) easily with the following formula:
emissive.rgb = emissive.rgb * pow(2.0, EV - 3.0);
This formula is available as Exposure::luminance(float) already
in Filament.
