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/*
* 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 <pixman.h>
#include <stdbool.h>
#include <wayland-server-core.h>
#include <wlr/render/dmabuf.h>
#include <wlr/render/drm_format_set.h>
struct wlr_egl_context {
EGLDisplay display;
EGLContext context;
EGLSurface draw_surface;
EGLSurface read_surface;
};
struct wlr_egl {
EGLDisplay display;
EGLConfig config; // may be EGL_NO_CONFIG
EGLContext context;
EGLDeviceEXT device; // may be EGL_NO_DEVICE_EXT
struct gbm_device *gbm_device;
struct {
// Display extensions
bool bind_wayland_display_wl;
bool image_base_khr;
bool image_dma_buf_export_mesa;
bool image_dmabuf_import_ext;
bool image_dmabuf_import_modifiers_ext;
// Device extensions
bool device_drm_ext;
// Client extensions
bool device_query_ext;
} exts;
struct {
PFNEGLGETPLATFORMDISPLAYEXTPROC eglGetPlatformDisplayEXT;
PFNEGLCREATEPLATFORMWINDOWSURFACEEXTPROC eglCreatePlatformWindowSurfaceEXT;
PFNEGLCREATEIMAGEKHRPROC eglCreateImageKHR;
PFNEGLDESTROYIMAGEKHRPROC eglDestroyImageKHR;
PFNEGLQUERYWAYLANDBUFFERWL eglQueryWaylandBufferWL;
PFNEGLBINDWAYLANDDISPLAYWL eglBindWaylandDisplayWL;
PFNEGLUNBINDWAYLANDDISPLAYWL eglUnbindWaylandDisplayWL;
PFNEGLQUERYDMABUFFORMATSEXTPROC eglQueryDmaBufFormatsEXT;
PFNEGLQUERYDMABUFMODIFIERSEXTPROC eglQueryDmaBufModifiersEXT;
PFNEGLEXPORTDMABUFIMAGEQUERYMESAPROC eglExportDMABUFImageQueryMESA;
PFNEGLEXPORTDMABUFIMAGEMESAPROC eglExportDMABUFImageMESA;
PFNEGLDEBUGMESSAGECONTROLKHRPROC eglDebugMessageControlKHR;
PFNEGLQUERYDISPLAYATTRIBEXTPROC eglQueryDisplayAttribEXT;
PFNEGLQUERYDEVICESTRINGEXTPROC eglQueryDeviceStringEXT;
PFNEGLQUERYDEVICESEXTPROC eglQueryDevicesEXT;
} procs;
struct wl_display *wl_display;
struct wlr_drm_format_set dmabuf_texture_formats;
struct wlr_drm_format_set dmabuf_render_formats;
};
/**
* Initializes an EGL context for the given platform and remote display.
* Will attempt to load all possibly required api functions.
*
* If config_attribs is NULL, the EGL config is not created.
*/
struct wlr_egl *wlr_egl_create(EGLenum platform, void *remote_display,
const EGLint *config_attribs);
/**
* Creates and EGL context from a given drm fd. This function uses the
* following extensions:
* - EXT_device_enumeration to get the list of available EGLDeviceEXT
* - EXT_device_drm to get the name of the EGLDeviceEXT
* - EXT_platform_device to create an EGLDisplay from an EGLDeviceEXT
*/
struct wlr_egl *wlr_egl_create_from_drm_fd(int drm_fd);
/**
* 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);
/**
* Returns a surface for the given native window
* The window must match the remote display the wlr_egl was created with.
*/
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, 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);
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);
/**
* Destroys an EGL image created with the given wlr_egl.
*/
bool wlr_egl_destroy_image(struct wlr_egl *egl, EGLImageKHR image);
/**
* 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_make_current(struct wlr_egl *egl);
bool wlr_egl_unset_current(struct wlr_egl *egl);
bool wlr_egl_is_current(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);
bool wlr_egl_destroy_surface(struct wlr_egl *egl, EGLSurface surface);
int wlr_egl_dup_drm_fd(struct wlr_egl *egl);
#endif
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