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authorBenjamin Franzke <benjaminfranzke@googlemail.com>2011-02-04 12:24:08 +0100
committerBenjamin Franzke <benjaminfranzke@googlemail.com>2011-02-07 13:55:20 +0100
commit214fc6e85057bc4661b76ae3f3c22733910da69c (patch)
tree6b8a31fcf2180ee6f5575db6fabb7da7e51a9254 /src/egl/wayland/wayland-egl.c
parente586c4b7634f856a350f029709adc8a32271562c (diff)
egl: Implement libwayland-egl
This library is required and defined by wayland for EGL implementations supporting wayland.
Diffstat (limited to 'src/egl/wayland/wayland-egl.c')
-rw-r--r--src/egl/wayland/wayland-egl.c224
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();
+}