mirror of
https://gitlab.freedesktop.org/wlroots/wlroots.git
synced 2026-04-14 08:22:25 -04:00
27bbb91abf
Allow direct access to the pixel data of linux_dmabuf_v1 buffers by
mmapping the FD. This causes a wait on any outstanding fences and also
triggers the DMA_BUF_SYNC mechanism to do any cache fiddling needed.
This doesn't support multi-planar formats (e.g. YUV420 from hardware
codecs)
I also fix the comment on wlr_renderer.render_buffer_caps (it's used for
textures, not the render target) and update
wlr_renderer_init_wl_display() and
wlr_linux_dmabuf_feedback_v1_init_with_options() to use the renderer's
own claimed buffer_caps instead of hardcoding DMABUF as required.
Loosely based on 46ef2cfa3c
125 lines
2.9 KiB
C
125 lines
2.9 KiB
C
/*
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* This an unstable interface of wlroots. No guarantees are made regarding the
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* future consistency of this API.
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*/
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#ifndef WLR_USE_UNSTABLE
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#error "Add -DWLR_USE_UNSTABLE to enable unstable wlroots features"
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#endif
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#ifndef WLR_RENDER_WLR_RENDERER_H
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#define WLR_RENDER_WLR_RENDERER_H
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#include <stdint.h>
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#include <wayland-server-core.h>
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#include <wlr/render/pass.h>
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#include <wlr/render/wlr_texture.h>
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#include <wlr/util/box.h>
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struct wlr_backend;
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struct wlr_renderer_impl;
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struct wlr_drm_format_set;
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struct wlr_buffer;
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struct wlr_box;
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struct wlr_fbox;
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/**
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* A renderer for basic 2D operations.
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*/
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struct wlr_renderer {
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// Capabilities required for the buffers used as texture sources and
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// render target (bitmask of enum wlr_buffer_cap)
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uint32_t render_buffer_caps;
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struct {
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struct wl_signal destroy;
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/**
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* Emitted when the GPU is lost, e.g. on GPU reset.
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*
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* Compositors should destroy the renderer and re-create it.
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*/
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struct wl_signal lost;
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} events;
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struct {
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/**
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* Does the renderer support color transforms on its output?
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*/
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bool output_color_transform;
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/**
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* Whether wait/signal timelines are supported.
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*
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* See struct wlr_drm_syncobj_timeline.
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*/
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bool timeline;
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} features;
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struct {
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const struct wlr_renderer_impl *impl;
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} WLR_PRIVATE;
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};
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/**
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* Automatically create a new renderer.
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*
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* Selects an appropriate renderer type to use depending on the backend,
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* platform, environment, etc.
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*/
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struct wlr_renderer *wlr_renderer_autocreate(struct wlr_backend *backend);
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/**
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* Get the formats supporting sampling usage.
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*
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* The buffer capabilities must be passed in.
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*
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* Buffers allocated with a format from this list may be passed to
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* wlr_texture_from_buffer().
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*/
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const struct wlr_drm_format_set *wlr_renderer_get_texture_formats(
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struct wlr_renderer *r, uint32_t buffer_caps);
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/**
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* Initializes wl_shm, linux-dmabuf and other buffer factory protocols.
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*
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* Returns false on failure.
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*/
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bool wlr_renderer_init_wl_display(struct wlr_renderer *r,
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struct wl_display *wl_display);
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/**
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* Initializes wl_shm on the provided struct wl_display.
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*/
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bool wlr_renderer_init_wl_shm(struct wlr_renderer *r,
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struct wl_display *wl_display);
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/**
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* Obtains the FD of the DRM device used for rendering, or -1 if unavailable.
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*
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* The caller doesn't have ownership of the FD, it must not close it.
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*/
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int wlr_renderer_get_drm_fd(struct wlr_renderer *r);
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/**
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* Destroys the renderer.
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*
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* Textures must be destroyed separately.
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*/
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void wlr_renderer_destroy(struct wlr_renderer *renderer);
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/**
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* Allocate and initialise a new render timer.
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*/
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struct wlr_render_timer *wlr_render_timer_create(struct wlr_renderer *renderer);
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/**
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* Get the render duration in nanoseconds from the timer.
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*
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* Returns -1 if the duration is unavailable.
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*/
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int wlr_render_timer_get_duration_ns(struct wlr_render_timer *timer);
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/**
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* Destroy the render timer.
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*/
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void wlr_render_timer_destroy(struct wlr_render_timer *timer);
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#endif
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