wlroots/include/render/egl.h

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#ifndef RENDER_EGL_H
#define RENDER_EGL_H
#include <wlr/render/egl.h>
struct wlr_egl_context {
EGLDisplay display;
EGLContext context;
EGLSurface draw_surface;
EGLSurface read_surface;
};
/**
* Initializes an EGL context for the given platform and remote display.
* Will attempt to load all possibly required api functions.
*/
struct wlr_egl *wlr_egl_create(EGLenum platform, void *remote_display);
/**
* Frees all related EGL resources, makes the context not-current and
* unbinds a bound wayland display.
*/
void wlr_egl_destroy(struct wlr_egl *egl);
/**
* Binds the given display to the EGL instance.
* This will allow clients to create EGL surfaces from wayland ones and render
* to it.
*/
bool wlr_egl_bind_display(struct wlr_egl *egl, struct wl_display *local_display);
/**
* 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, bool *external_only);
/**
* Get DMA-BUF formats suitable for sampling usage.
*/
const struct wlr_drm_format_set *wlr_egl_get_dmabuf_texture_formats(
struct wlr_egl *egl);
/**
* Get DMA-BUF formats suitable for rendering usage.
*/
const struct wlr_drm_format_set *wlr_egl_get_dmabuf_render_formats(
struct wlr_egl *egl);
/**
* Destroys an EGL image created with the given wlr_egl.
*/
bool wlr_egl_destroy_image(struct wlr_egl *egl, EGLImageKHR image);
int wlr_egl_dup_drm_fd(struct wlr_egl *egl);
/**
* Save the current EGL context to the structure provided in the argument.
*
* This includes display, context, draw surface and read surface.
*/
void wlr_egl_save_context(struct wlr_egl_context *context);
/**
* Restore EGL context that was previously saved using wlr_egl_save_current().
*/
bool wlr_egl_restore_context(struct wlr_egl_context *context);
#endif