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.
This class is an attempt at adding dynamic mipmapping support to OBS, which is lacking this feature. It is pretty much a hack until I figure out how to do it for both d3d11 and opengl and can make a PR for obs-studio to include this ability by default.
The Custom Shader Filter is now capable of rendering a custom shader using the gfx::effect_source class as a backend. An example shader is provided for starting off, more advanced examples may come later.
Related: #5
Rendering is now possible, although some parameter types are not yet supported. So far, booleans and floats will work fine, integers will cause an error in OBS Studios rendering code for an unknown reason.
The Blur Filter can now be applied to a region inside the source itself, the inverse of that region, and/or a feathered version of that region. This allows for easier scene setups where only some parts need to be blurred, but the rest can be left as is.
Fixes#12
From this point on, Source Mirror is now capable of real-time mirroring of Video and Audio. This can help if you need different filters per scene for your microphone or voice chat, depending on the scene (audio ducking for pause scene, no audio ducking for live gaming).
gfx::effect_source is the base class for all Custom Shader Sources and Transitions, which reduces the overall workload to a single file, but unfortunately also reducing the effective customization per source a bit.
Converts a String to an std::pair of int64_t (long long), which contain the size or 0 if none could be parsed. Any delimiter except digits(0-9), a minus sign(-) or a plus sign(+) between width and height are allowed. If a plus or minus sign is used as a delimiter, it must immediately be followed by the second size number. This allows for formats such as: 100x100, 100:100, 100p100, 100@100, 100+100 and so on, but not formats such as 100+:100, 100ThisIsSomeReall+yLongText100, etc.
The parameter 'allowSquare' also determines what to do when the height parameter is not found. A value of true will have the function return <width,width> instead of <width,0>.
Michael Fabian 'Xaymar' Dirks