diff options
Diffstat (limited to 'src/egl/wayland/wayland-egl.c')
| -rw-r--r-- | src/egl/wayland/wayland-egl.c | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/src/egl/wayland/wayland-egl.c b/src/egl/wayland/wayland-egl.c new file mode 100644 index 00000000000..6aa2d51063a --- /dev/null +++ b/src/egl/wayland/wayland-egl.c @@ -0,0 +1,224 @@ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <stdbool.h> +#include <errno.h> + +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <unistd.h> + +#include <dlfcn.h> + +#include <wayland-client.h> +#include <xf86drm.h> + +#include "wayland-egl.h" +#include "wayland-egl-priv.h" + +static void +drm_handle_device(void *data, struct wl_drm *drm, const char *device) +{ + struct wl_egl_display *egl_display = data; + drm_magic_t magic; + + egl_display->device_name = strdup(device); + + egl_display->fd = open(egl_display->device_name, O_RDWR); + + if (egl_display->fd == -1) { + fprintf(stderr, "wayland-egl: could not open %s (%s)", + egl_display->device_name, strerror(errno)); + return; + } + drmGetMagic(egl_display->fd, &magic); + wl_drm_authenticate(egl_display->drm, magic); +} + +static void +drm_handle_authenticated(void *data, struct wl_drm *drm) +{ + struct wl_egl_display *egl_display = data; + + egl_display->authenticated = true; +} + +static const struct wl_drm_listener drm_listener = { + drm_handle_device, + drm_handle_authenticated +}; + +static void +wl_display_handle_global(struct wl_display *display, uint32_t id, + const char *interface, uint32_t version, void *data) +{ + struct wl_egl_display *egl_display = data; + + if (strcmp(interface, "drm") == 0) { + egl_display->drm = wl_drm_create(display, id); + wl_drm_add_listener(egl_display->drm, &drm_listener, + egl_display); + } +} + +/* stolen from egl_dri2:dri2_load() */ +static void * +get_flush_address() { + void *handle; + void *(*get_proc_address)(const char *procname); + + handle = dlopen(NULL, RTLD_LAZY | RTLD_GLOBAL); + if (handle) { + get_proc_address = (void* (*)(const char *)) + dlsym(handle, "_glapi_get_proc_address"); + /* no need to keep a reference */ + dlclose(handle); + } + + /* + * If glapi is not available, loading DRI drivers will fail. Ideally, we + * should load one of libGL, libGLESv1_CM, or libGLESv2 and go on. But if + * the app has loaded another one of them with RTLD_LOCAL, there may be + * unexpected behaviors later because there will be two copies of glapi + * (with global variables of the same names!) in the memory. + */ + if (!get_proc_address) { + fprintf(stderr, "failed to find _glapi_get_proc_address"); + return NULL; + } + + return get_proc_address("glFlush"); +} + +WL_EGL_EXPORT struct wl_egl_display * +wl_egl_display_create(struct wl_display *display) +{ + struct wl_egl_display *egl_display; + + egl_display = malloc(sizeof *egl_display); + if (!egl_display) + return NULL; + + egl_display->display = display; + egl_display->drm = NULL; + egl_display->device_name = NULL; + egl_display->authenticated = false; + + egl_display->glFlush = (void (*)(void)) get_flush_address(); + + wl_display_add_global_listener(display, wl_display_handle_global, + egl_display); + + return egl_display; +} + +WL_EGL_EXPORT void +wl_egl_display_destroy(struct wl_egl_display *egl_display) +{ + + free(egl_display->device_name); + close(egl_display->fd); + + wl_drm_destroy(egl_display->drm); + + free(egl_display); +} + +WL_EGL_EXPORT void +wl_egl_window_resize(struct wl_egl_window *egl_window, + int width, int height, + int dx, int dy) +{ + egl_window->width = width; + egl_window->height = height; + egl_window->dx = dx; + egl_window->dy = dy; +} + +WL_EGL_EXPORT struct wl_egl_window * +wl_egl_window_create(struct wl_surface *surface, + int width, int height, + struct wl_visual *visual) +{ + struct wl_egl_window *egl_window; + + egl_window = malloc(sizeof *egl_window); + if (!egl_window) + return NULL; + + egl_window->surface = surface; + egl_window->visual = visual; + wl_egl_window_resize(egl_window, width, height, 0, 0); + egl_window->attached_width = 0; + egl_window->attached_height = 0; + + return egl_window; +} + +WL_EGL_EXPORT void +wl_egl_window_destroy(struct wl_egl_window *egl_window) +{ + free(egl_window); +} + +WL_EGL_EXPORT void +wl_egl_window_get_attached_size(struct wl_egl_window *egl_window, + int *width, int *height) +{ + if (width) + *width = egl_window->attached_width; + if (height) + *height = egl_window->attached_height; +} + +WL_EGL_EXPORT struct wl_egl_pixmap * +wl_egl_pixmap_create(struct wl_egl_display *egl_display, + int width, int height, + struct wl_visual *visual, uint32_t flags) +{ + struct wl_egl_pixmap *egl_pixmap; + + egl_pixmap = malloc(sizeof *egl_pixmap); + if (egl_pixmap == NULL) + return NULL; + + egl_pixmap->display = egl_display; + egl_pixmap->width = width; + egl_pixmap->height = height; + egl_pixmap->visual = visual; + egl_pixmap->name = 0; + egl_pixmap->stride = 0; + + egl_pixmap->destroy = NULL; + + return egl_pixmap; +} + +WL_EGL_EXPORT void +wl_egl_pixmap_destroy(struct wl_egl_pixmap *egl_pixmap) +{ + if (egl_pixmap->destroy) + egl_pixmap->destroy(egl_pixmap); + free(egl_pixmap); +} + +WL_EGL_EXPORT struct wl_buffer * +wl_egl_pixmap_create_buffer(struct wl_egl_display *egl_display, + struct wl_egl_pixmap *egl_pixmap) +{ + if (egl_pixmap->name == 0) + return NULL; + + return wl_drm_create_buffer(egl_display->drm, egl_pixmap->name, + egl_pixmap->width, egl_pixmap->height, + egl_pixmap->stride, egl_pixmap->visual); +} + +WL_EGL_EXPORT void +wl_egl_pixmap_flush(struct wl_egl_display *egl_display, + struct wl_egl_pixmap *egl_pixmap) +{ + if (egl_display->glFlush) + egl_display->glFlush(); +} |