wlroots/include/wlr/render/egl.h

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#ifndef WLR_RENDER_EGL_H
#define WLR_RENDER_EGL_H
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#include <EGL/egl.h>
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#include <EGL/eglext.h>
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#include <pixman.h>
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#include <stdbool.h>
#include <wayland-server.h>
#include <wlr/render/dmabuf.h>
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struct wlr_egl {
EGLDisplay display;
EGLConfig config;
EGLContext context;
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const char *exts_str;
struct {
bool buffer_age;
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bool swap_buffers_with_damage;
bool dmabuf_import;
bool dmabuf_import_modifiers;
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bool dmabuf_export;
bool bind_wayland_display;
} egl_exts;
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struct wl_display *wl_display;
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};
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// TODO: Allocate and return a wlr_egl
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/**
* Initializes an EGL context for the given platform and remote display.
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* Will attempt to load all possibly required api functions.
*/
bool wlr_egl_init(struct wlr_egl *egl, EGLenum platform, void *remote_display,
EGLint *config_attribs, EGLint visual_id);
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/**
* Frees all related EGL resources, makes the context not-current and
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* unbinds a bound wayland display.
*/
void wlr_egl_finish(struct wlr_egl *egl);
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/**
* Binds the given display to the EGL instance.
* This will allow clients to create EGL surfaces from wayland ones and render
* to it.
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*/
bool wlr_egl_bind_display(struct wlr_egl *egl, struct wl_display *local_display);
/**
* Returns a surface for the given native window
* The window must match the remote display the wlr_egl was created with.
*/
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EGLSurface wlr_egl_create_surface(struct wlr_egl *egl, void *window);
/**
* Creates an EGL image from the given wl_drm buffer resource.
*/
EGLImageKHR wlr_egl_create_image_from_wl_drm(struct wlr_egl *egl,
struct wl_resource *data, EGLint *fmt, int *width, int *height,
bool *inverted_y);
/**
* Creates an EGL image from the given dmabuf attributes. Check usability
* of the dmabuf with wlr_egl_check_import_dmabuf once first.
*/
EGLImageKHR wlr_egl_create_image_from_dmabuf(struct wlr_egl *egl,
struct wlr_dmabuf_attributes *attributes);
/**
* Try to import the given dmabuf. On success return true false otherwise.
* If this succeeds the dmabuf can be used for rendering on a texture
*/
bool wlr_egl_check_import_dmabuf(struct wlr_egl *egl,
struct wlr_dmabuf_attributes *attributes);
/**
* Get the available dmabuf formats
*/
int wlr_egl_get_dmabuf_formats(struct wlr_egl *egl, int **formats);
/**
* Get the available dmabuf modifiers for a given format
*/
int wlr_egl_get_dmabuf_modifiers(struct wlr_egl *egl, int format,
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uint64_t **modifiers);
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bool wlr_egl_export_image_to_dmabuf(struct wlr_egl *egl, EGLImageKHR image,
int32_t width, int32_t height, uint32_t flags,
struct wlr_dmabuf_attributes *attribs);
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/**
* Destroys an EGL image created with the given wlr_egl.
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*/
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bool wlr_egl_destroy_image(struct wlr_egl *egl, EGLImageKHR image);
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bool wlr_egl_make_current(struct wlr_egl *egl, EGLSurface surface,
int *buffer_age);
bool wlr_egl_is_current(struct wlr_egl *egl);
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bool wlr_egl_swap_buffers(struct wlr_egl *egl, EGLSurface surface,
pixman_region32_t *damage);
bool wlr_egl_destroy_surface(struct wlr_egl *egl, EGLSurface surface);
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#endif