The nature of this Signed Distance Field based Filter is not to only draw shadows, but to also draw an outline or even glow around a source. Therefore the name "Inner/Outer Shadow (SDF)" does not fit well with the intent of the actual Filter.
Allows for enumerating any kind of source, as long as it has a name and is not private. As obs_enum_scenes is a 23.x and above function, this class should be used instead to remain backwards compatible.
Fixes the m_source_texture = nullptr bug, which happened due to m_tick and m_last_tick both being 0, as no video_tick is called when the source is first created. Instead a boolean flag is now used that is reset to false on each video_tick.
This replaces the use of gs_texture_t* with gs::texture, further improving stability. Additionally some of the useless checks were replaced or reduced.
The filters are always the same for every language and should not be translated, instead only the file type should be translated. This way bad translations will not affect the options that the user can select.
The Transform filter will now no longer render the child source more than once per tick(), resulting in an overall speed up for heavy sources. This also applies to mipmapping and shape rendering. Any other calls to video_render will instead just use the cached texture.
Additionally the crash on exit has been fixed which was caused by strings.hpp containing static const char*s and using these directly in obs calls. Instead we now use #define for those property names
Rendering will now use a cached version of the mirrored source in order to reduce rendering cost drastically for heavy sources or scenes. Additionally rescaling now uses the internal scene instead of being a custom implementation, allowing for some new things.
Rescaling now has a new option: Bounds Type! This option allows control over just how a source is scaled, by default it is set to Stretch, but there are other options that can keep the aspect ratio of the mirrored source in tact.
Additionally the ScalingMethod struct has been replaced with obs_scale_type, which means that Bilinear Low Resolution is now no longer an option.
Implements #35
Initialization happens in the constructor again, as using a delayed initialization only caused update() to be slower.
Additionally refactored some variable names to make more sense.
load() is guaranteed to happen after all sources have been created and no earlier, and we can use update() to guarantee that we don't need to duplicate our initialization code in case we go back to initializing earlier than load().
This fixes the multi-reference issue that caused Source Mirror to keep a permanent reference to a source that should have been released.
The obs::audio_capture was also updated to now use the util::event code for improved callback support. There are a bunch of new additional checks in the acquire_input function that prevent bad references from happening, and is also now self-cleaning through the use of obs::source
By using util::event a single obs::audio_capture can now have multiple callbacks for the same data, without requiring additional obs::audio_capture to be present. Additionally it allows us to stop listening on an obs callback if there are no actual listeners, and start listening as soon as there is a listener.
Move and Copy constructors are currently not supported by this class and thus have been marked deleted. Internally also now using obs::source to keep track of the used source.
There was no proper implementation for all copy and move constructors and operators before, which meant that occasionally the default behavior took over. This is not what we want, as the default behavior doesn't deal well with reference counted pointers.
Related: #32, #33
While Linux was not an original goal of the project, it should still be supported out of the box. Therefore a number of changes are contained in this changeset:
- All C++ .h files were renamed to .hpp.
- All C includes (<....h>) were replaced with C++ includes (<c...>) and missing includes were added.
- std::memset and std::memcpy was replaced with memset and memcpy.
- All anonymous structs were removed where necessary.
- `extern "C"` was removed where it wasn't needed.
- #pragma warning was placed behind an #ifdef _MSC_VER
- The macros for `min`, `max` and `clamp` were removed as they were not used.
- `-fpedantic` was added to the GCC flags for bitmask support.
- `gs::rendertarget_op` is now declared before use.
- std::exception(const char*) was replaced with std::runtime_error(const char*).
- Added aligned_alloc and aligned_free macros for GCC and MSVC support.
- Replaced use of `sprintf_s` with `snprintf`.
- Placed additional guards around windows only code.
Additonally some changes were made that do not affect Linux:
- `NOMINMAX` and `NOINOUT` were removed.
Fixes: #27Fixes: #13
Directional Blur (also known as Motion Blur in some art software) enables full control over the direction the passes are applied in, which can further be combined with the scaling option. With this very simple blur effects can have a massively bigger influence.
Step Scaling allows for improved control over individual Blur passes and can be combined with Directional Blur to imitate certain effects. It also allows smaller Blur sizes to cover a larger area, although with a drastic loss in final quality. For example, if someone is streaming at 720p and wants to have their dynamic 2160p background blurry to a very high degree, this option would allow that at next to no quality loss in the final stream. The actual values that need to be used vary for each source and encoder however, so they will have to be chosen carefully.
Translucent sources previously rendered with wrong alpha, which caused sources to look different than they should. With the new code, this is no longer the case and instead now renders the source correctly.
Additionally the modernized code should reduce any problems with rendering by reducing the amount of duplicated manually written code and instead using classes.
This speeds up Gaussian Blur and Linear Gaussian Blur drastically reduces time spent reading textures and instead uses existing registers - maximizing time spent reading the actual image texture.
See Also: #21 Blur Quality
Similar to Linear Box Blur, this version of Gaussian Blur reduces the total number of sample by up to n. This results in a total sample count (per pass) of O(n+1) for even radii and O(n+2) for odd radii. The quality sacrificed to do this is higher this time, though careful adjustment of the halfTexelDelta value can bring it much closer to normal Gaussian Blur. The current offset however had no noticable effects on visual quality.
See Also: #21 Blur Quality
Linear Box Blur abuses the fact that with Linear Sampling we can sample up to four adjacent texels at the same time and get a correct result for Box Blur back. Using this the total number of sample for Box Blur is reduced by n, making the total either n+1 (Even Radius) or n (Odd Radius).
Additionally all blur effect files have been merged into a single blur.effect file to reduce the time required to change a single parameter name. New blur effects should be added as a new technique instead of as a new effect file.
See Also: #21 Blur Quality
Adds Inner/Outer Shadows for dynamic sources based on signed distance field generation. This is fast, but does add a bit of latency when it comes to updates - which means that moving objects will leave a trail before the generator has a chance to update.
Fixes#3
Due to the lack of checking aud and aoi, a rare race condition crash can be observed with audio mirroring enabled on closing OBS. In this case, aoi is used even though it is null, causing OBS to crash instead of closing normally.
Fixes#22
Adds full support for Scenes as mask input so that you can re-use your overlay scene as a blur input and have the blur follow behind your overlay.
Closes#14
* Removes the old 'Region' fields and places them under a 'Mask' option that can do much more.
* Supported Mask types: Region, Image, Source.
* Image and Source mask types allow for a color filter and multiplier.
* Now using a Factory and Instance approach to simplify and beautify the code at the same time.
* Additionally we now keep track of created filters and only load data if there is a filter active, and unload data if there are no more filters. This reduces memory and GPU overhead when no filter is active, but adds a first time filter creation overhead.
* Variables and functions now use snake_case.
The filter will now automatically rescale the parent stack into the next best power of two size. With this, even non-power-of-two sources can now be mipmapped semi-correctly.
To accurately support mipmapping even for npot textures, this feature would have to be built into OBS and OBS would have to stop refusing to create textures with mipmaps that are not a power of two in size. Almost all common Direct3D 11 (except Intel) are capable of npot mipmaps at full speed, while OpenGL usually depends on the GPU and Driver used.
The '3D Transform' filter now support mipmapping using the Linear generator. This results in smoother images when the shape is squished or distant, instead of a pixelated mess.
This enables full mipmapping support for textures with a shader view that allows accessing different mip levels. In order to access mip levels, you have to specify gs::texture:🎏:BuildMipMaps when creating the texture, as OBS currently forces the maximum mip level to 1 even if you actually have mip data available.
Michael Fabian 'Xaymar' Dirks