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v0.2.1b17e51cf · ·
v0.2.1 This is a bugfix release, intended to backport a number of easy and/or critical fixes onto v0.2.0, since this is effectively the current 'LTS' due to its use in VLC 3.0. Despite the included fixes, it's still not recommended to make use of `pl_renderer` in this release. v0.4.0 is the first release where that feature could be considered officially supported. For a full list of backported changes, see the git log. But aside from cosmetics, comment fixes, here are the most noteworthy changes: Fixes: - Fix some typos in shaders that lead to miscompilation - Work around the lack of mix(vecN, vecN, bvecN) on GLSL 120 - Avoid the use of platform-dependent locale-invariant printf() calls for shader generation. Instead, use a custom implementation - Work around libshaderc locale dependence (currently only relevant when using vulkan) - Fix various errors with anamorphic content handling - Fix various errors when using vulkan - Add some more sanitization to RA calls, and fix some of the existing ones
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v0.4.06c336a1d · ·
v0.4.0 This release brings with it a major performance change to the renderer's scaling pipeline, support for vulkan format emulation, improvements to the HDR peak detection algorithm as well as greatly improved support for compute shader-based rasterization. In addition to the above features, this release renames the `RA` abstraction to `pl_gpu`, and normalizes the `ra_` prefix to `pl_` in order to match the rest of the API as well as prevent potential future symbol conflicts with mpv's internal copy of RA. Additions: - Add `pl_shader_encode_color`, which is an inversion of `pl_shader_decode_color` (NOTE: Some features, such as inverse constant luminance or XYZ encoding, are not currently supported) - Add API for overlay images. This can be used to directly overlay arbitrary planes (e.g. subtitles, or menu items) on top of the rendered image or the target FBO. Each plane is allowed to have its own color space/repr and format. See `struct pl_overlay` for more details - Add various predefined `pl_color_repr` values - Add scene change detection functionality to the HDR peak detection algorithm in `pl_shader_color_map`. The new algorithm is designed to allow using larger peak detection buffers without the associated risk of eye-adaptation-like effects - Add support for texel buffers (uniform and storage) in the pl_buf API. These can be used to storage raw texels in buffer format, much like 1D textures, but with the usual buffer-related functionality - Add support for vulkan format emulation, which allows users to directly upload and download e.g. rgb8 or rgb32f textures, even though these are not typically supported by GPUs. The format emulation uses compute shaders and texel storage buffers to fix the data representation on-GPU, and is significantly faster than doing the same with on-CPU software conversion routines - Add a `pl_dispatch_compute` function, which behaves like `pl_dispatch_finish` but without the FBO output, blending and rasterization simulation logic. This is useful when dispatching pure-compute shaders. (Note: Not currently very useful for API users since there are no pure-compute shaders as part of the public API) Changes: - Rename the `ra_` series of abstractions to `pl_` for consistency. The old `struct ra` was renamed to `struct pl_gpu` - The dispatch logic for compute shaders will now correctly simulate the dispatch rect, by manually translating coordinates in the shader. - Disallow using compute shader scaling for flipped source rects. API users who relied on this behavior are encouraged to instead flip the coordinates of the resulting `pl_dispatch_finish` call - Have the renderer infer `src_rect` and `dst_rect` when not given - Have the renderer encode colors to the `target.repr` before outputting to screen. This includes, for example, conversion to YUV and dithering to the target representation's bit depth (where known) - Add a `pl_blend_params` struct to `pl_dispatch_finish`, which can be used to enable blending (including compute shaders) including when using compute shaders. - Subsampled planes must now be an integer multiple (or inverse thereof) of the reference size. If this is not the case, the renderer will assume the planes are cropped or expanded. This is needed to correctly render e.g. 4:2:0 subsampled JPEGs with odd sizes - Require that all uses of `pl_image` with the same `signature` point to the same data, to allow safe cache purging - Allow dispatching debanding and bicubic shaders at any size - `pl_plane_find_fmt` may now be called with `out_map=NULL` - Change the `pl_color_map_default_params` in response to the new scene detection feature. The default buffer size has been increased from 21 to 64, which leads to a much more stable image that flickers less Fixes and performance improvements: - Fix typo that lead to incorrect anamorphic rendering - Fix various rendering issues when using a flipped src_rect - Fix a double-free that could happen as a result of rendering failing in an unexpected way. - Fix handling of alpha values in `pl_shader_decode_color` - Correctly set the queue family index for vulkan buffer barriers - Work around a locale dependence in libshaderc by calling uselocale/XXX before calling into shaderc functions - Remove POSIX dependence in the test suite - Remove non-portable ffsll call - Fix demos/sdl2.c building on windows - Fix an issue where trying to polar sample multiple planes could result in a variable conflict - Fix inverted plane shift offset calculation - Respect the debanding settings in the renderer - Sanitize `pl_pass_run_params.scissors` and silently drop no-ops - Avoid dependence on exact float equality in the renderer's upscaling/downscaling checks - Fix an off-by-one in the HDR peak computation code which lead to subtly too-dark output - Correctly check for and enable required vulkan device features - Switch to a custom implementation of locale-invariant printf, to avoid depending on broken platform-dependent versions - Overhaul the renderer's scaling pipeline. The new code is significantly faster when rendering cropped images, and also fixes an issue where src_rect was not applied when FBOs are unavailable - Minor performance tweaks here and there - Cap the sizes of various buffer pools and command queues in order to avoid OOM scenarios in infinite loops that don't contain enough forward dependencies to force command flushing - Correctly check for and catch buffer access overflow - Don't segfault when `pl_buf_create` fails - Don't segfault when running a compute shader without viewport/scissors - Fix a 32-bit integer overflow that could occurr when using HDR peak detection on 4K content with large values of `peak_detect_frames` - Fix an off-by-one in the generation of literal LUTs such as the type used by the dithering code when textures are unavailable, which led to these shaders miscompiling - Various fixes for building on 32-bit systems - Fix an uninitialized value in the renderer
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v0.3.044589895 · ·
v0.3.0 This update brings with it some major changes to the renderer, support for swapchains, separated sampling, sigmoidization and more. It also includes, for the first time, a graphical demo capable of rendering to the screen - as well as a benchmark. Additions: - Add a new type (ra_swapchain) encapsulating the concept of a presentable surface (e.g. graphical window) which can be presented to the display, as well as an implementation for vulkan swapchains - Add a simple benchmark suite - Add a new helper utils/upload.h for simplifying the process of picking a compatible texture format and uploading raw texture data - Add a helper function to setup a pl_render_target from a swapchain - Add a graphical demo based on SDL2 (compiled with vulkan support) - Add support for separated (orthogonal) scaling, and make the renderer use it - Add support for using the optimized GPU-native sampling methods for nearest/bilinear/bicubic where possible - Add support for sigmoidization/unsigmoidization shaders - Make the renderer use linearization/sigmoidization where appropriate Changes: - Require vulkan >= v1.0.24, rather than the old >= 1.0.50 - Split up vulkan instance and device creation into separate helpers. This is needed to satisfy the typical VkInstance -> VkSurface -> VkDevice dependency dance required to create a renderable swapchain. - Change the API of pl_dispatch_finish/abort to make it clear that they consume and take over ownership of the pl_shader - Have the renderer also #include most of its API dependencies, to cut down the amount of #include spam needed to use it - Rename pl_sample_polar_params and generalize it to include separated (orthogonal) scaling as well - Various API changes to pl_render_params Fixes: - Allow running the build script without `git` installed - Fix an invalid bounds check on ra_tex_blit causing it to fail for 1D/2D textures - Use global #include paths for all public headers, rather than relative - Fix the src_rect calculation in the renderer, thus fixing an issue where anamorphic scaling produced the wrong result - Fix a typo in the renderer, causing it to skip some planes - Fix a memory leak caused by implicit deallocation of pl_shader - Fix a bug in the renderer causing the image to stop updating after the first frame after a resize - Fixes a bug where the color mapping / tone mapping shaders sometimes got (accidentally) triggered when the source colorspace is unknown - Fix a bug where compute shaders were incorrectly dispatched after a resize of the dispatch target - Fix a bug where the polar compute shader read from uninitialized memory when performing anamorphic scaling - Various other bug fixes and performance tweaks
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v0.2.03b5fd083 · ·
v0.2.0 Additions: - Add a public "renderer" API. This is currently very WIP, and not ready for stable usage yet. Both the API and the implementation are in flux, but the general goal is to make it easier to use libplcaebo to just render some data in the optimal way. - Add pl_deband_default_params - Expand shader system to support shader merging. This is not directly publicly useful yet, but it's used internally in the renderer. - Allow dispatching to sub-rects of the render target - Expand the scaling API to allow disabling antialiasing - Add high quality dithering algorithms (blue noise, arbitrary size bayer matrix). This uses a new, genearlized shader LUT mechanism which allows the LUT to manifest itself either as a texture, a uniform float[] or as an in-line constant array depending on environment/hardware capabilities. As such, this can be used to enable dithering even without the use of a RA. Changes: - Minor RA API changes here and there (e.g. signed -> unsigned stride) Fixes: - Improved check logic for various shaders - More descriptive variable names in some of the generated shaders - Fix overflow when dithering to bit depths greater than 32 - Fix the RA format finding logic in some cases - Make the scalers correctly support flipped scaling rects - Fix some incorrect vulkan texture barriers - Fix some locale issues on BSD - GLSL 120 compat fix with the dithering algorithm - Fix vulkan command polling logic to avoid blocking for longer than intended
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v0.1.07eb7a054 · ·
Release v0.1.0 This represents the initial release, mostly so we can get VLC with basic libplacebo support out of the way. As of v0.1, libplacebo only supports vulkan, and only exposes the low-level interfaces (dispatch, shader, ra). So as of now, libplacebo is only useful either as a GLSL shader generator (shaders.h), or as an offline tool for processing images (dispatch.h + vulkan). There is currently no high-level image/video rendering interface, and no support for OpenGL whatsoever. OpenGL support is planned for v0.2, and the addition of a high level renderer is planend for v0.3.