wlroots/include/wlr/render/egl.h

/*
 * This an unstable interface of wlroots. No guarantees are made regarding the
 * future consistency of this API.
 */
#ifndef WLR_USE_UNSTABLE
#error "Add -DWLR_USE_UNSTABLE to enable unstable wlroots features"
#endif

#ifndef WLR_RENDER_EGL_H
#define WLR_RENDER_EGL_H

#ifndef MESA_EGL_NO_X11_HEADERS
#define MESA_EGL_NO_X11_HEADERS
#endif
#ifndef EGL_NO_X11
#define EGL_NO_X11
#endif
#ifndef EGL_NO_PLATFORM_SPECIFIC_TYPES
#define EGL_NO_PLATFORM_SPECIFIC_TYPES
#endif

#include <wlr/config.h>

#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <stdbool.h>
#include <wlr/render/drm_format_set.h>

struct wlr_egl_context {
	EGLDisplay display;
	EGLContext context;
	EGLSurface draw_surface;
	EGLSurface read_surface;
};

/**
 * Make the EGL context current.
 *
 * Callers are expected to clear the current context when they are done by
 * calling wlr_egl_unset_current.
 */
bool wlr_egl_context_set_current(struct wlr_egl_context *ctx);

/**
 * Clear the EGL context
 */
bool wlr_egl_context_unset_current(struct wlr_egl_context *ctx);

bool wlr_egl_context_is_current(struct wlr_egl_context *ctx);

/**
 * Save the current EGL context to the structure provided in the argument.
 *
 * This includes display, context, draw surface and read surface.
 */
void wlr_egl_context_save(struct wlr_egl_context *context);

/**
 * Restore EGL context that was previously saved using wlr_egl_context_save().
 */
bool wlr_egl_context_restore(struct wlr_egl_context *context);

#endif