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https://github.com/hyprwm/wlroots-hyprland.git
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b0a663d39d
The swapchain maximum capacity is set to 4, so that we have enough room for: - A buffer currently displayed on screen - A buffer queued for display (e.g. to KMS) - A pending buffer that'll be queued next commit - An additional pending buffer in case we want to invalidate the currently pending one
41 lines
990 B
C
41 lines
990 B
C
#ifndef RENDER_SWAPCHAIN_H
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#define RENDER_SWAPCHAIN_H
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#include <stdbool.h>
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#include <wayland-server-core.h>
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#include <wlr/render/drm_format_set.h>
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#define WLR_SWAPCHAIN_CAP 4
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struct wlr_swapchain_slot {
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struct wlr_buffer *buffer;
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bool acquired; // waiting for release
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struct wl_listener release;
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};
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struct wlr_swapchain {
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struct wlr_allocator *allocator; // NULL if destroyed
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int width, height;
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struct wlr_drm_format *format;
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struct wlr_swapchain_slot slots[WLR_SWAPCHAIN_CAP];
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struct wl_listener allocator_destroy;
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};
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struct wlr_swapchain *wlr_swapchain_create(
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struct wlr_allocator *alloc, int width, int height,
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const struct wlr_drm_format *format);
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void wlr_swapchain_destroy(struct wlr_swapchain *swapchain);
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/**
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* Acquire a buffer from the swap chain.
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*
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* The returned buffer is locked. When the caller is done with it, they must
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* unlock it by calling wlr_buffer_unlock.
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*/
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struct wlr_buffer *wlr_swapchain_acquire(
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struct wlr_swapchain *swapchain);
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#endif
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