--- /dev/null
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (c) 2014 The Chromium OS Authors.
+ * Copyright © 2011 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <xf86drm.h>
+#include <dlfcn.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include "egl_dri2.h"
+#include "egl_dri2_fallbacks.h"
+#include "loader.h"
+
+static struct dri2_egl_display_vtbl dri2_surfaceless_display_vtbl = {
+ .create_pixmap_surface = dri2_fallback_create_pixmap_surface,
+ .create_image = dri2_create_image_khr,
+ .swap_interval = dri2_fallback_swap_interval,
+ .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage,
+ .swap_buffers_region = dri2_fallback_swap_buffers_region,
+ .post_sub_buffer = dri2_fallback_post_sub_buffer,
+ .copy_buffers = dri2_fallback_copy_buffers,
+ .query_buffer_age = dri2_fallback_query_buffer_age,
+ .create_wayland_buffer_from_image = dri2_fallback_create_wayland_buffer_from_image,
+ .get_sync_values = dri2_fallback_get_sync_values,
+};
+
+static void
+surfaceless_flush_front_buffer(__DRIdrawable *driDrawable, void *loaderPrivate)
+{
+}
+
+static __DRIbuffer *
+surfaceless_get_buffers_with_format(__DRIdrawable * driDrawable,
+ int *width, int *height,
+ unsigned int *attachments, int count,
+ int *out_count, void *loaderPrivate)
+{
+ struct dri2_egl_surface *dri2_surf = loaderPrivate;
+
+ dri2_surf->buffer_count = 1;
+ if (width)
+ *width = dri2_surf->base.Width;
+ if (height)
+ *height = dri2_surf->base.Height;
+ *out_count = dri2_surf->buffer_count;;
+ return dri2_surf->buffers;
+}
+
+#define DRM_RENDER_DEV_NAME "%s/renderD%d"
+
+EGLBoolean
+dri2_initialize_surfaceless(_EGLDriver *drv, _EGLDisplay *disp)
+{
+ struct dri2_egl_display *dri2_dpy;
+ const char* err;
+ int i;
+ int driver_loaded = 0;
+
+ loader_set_logger(_eglLog);
+
+ dri2_dpy = calloc(1, sizeof *dri2_dpy);
+ if (!dri2_dpy)
+ return _eglError(EGL_BAD_ALLOC, "eglInitialize");
+
+ disp->DriverData = (void *) dri2_dpy;
+
+ const int limit = 64;
+ const int base = 128;
+ for (i = 0; i < limit; ++i) {
+ char *card_path;
+ if (asprintf(&card_path, DRM_RENDER_DEV_NAME, DRM_DIR_NAME, base + i) < 0)
+ continue;
+
+#ifdef O_CLOEXEC
+ dri2_dpy->fd = open(card_path, O_RDWR | O_CLOEXEC);
+ if (dri2_dpy->fd < 0 && errno == EINVAL)
+#endif
+ {
+ dri2_dpy->fd = open(card_path, O_RDWR);
+ if (dri2_dpy->fd >= 0)
+ fcntl(dri2_dpy->fd, F_SETFD, fcntl(dri2_dpy->fd, F_GETFD) |
+ FD_CLOEXEC);
+ }
+
+ free(card_path);
+ if (dri2_dpy->fd < 0)
+ continue;
+
+ dri2_dpy->driver_name = loader_get_driver_for_fd(dri2_dpy->fd, 0);
+ if (dri2_dpy->driver_name) {
+ if (dri2_load_driver(disp)) {
+ driver_loaded = 1;
+ break;
+ }
+ free(dri2_dpy->driver_name);
+ }
+ close(dri2_dpy->fd);
+ }
+
+ if (!driver_loaded) {
+ err = "DRI2: failed to load driver";
+ goto cleanup_display;
+ }
+
+ dri2_dpy->dri2_loader_extension.base.name = __DRI_DRI2_LOADER;
+ dri2_dpy->dri2_loader_extension.base.version = 3;
+ dri2_dpy->dri2_loader_extension.getBuffers = NULL;
+ dri2_dpy->dri2_loader_extension.flushFrontBuffer =
+ surfaceless_flush_front_buffer;
+ dri2_dpy->dri2_loader_extension.getBuffersWithFormat =
+ surfaceless_get_buffers_with_format;
+
+ dri2_dpy->extensions[0] = &dri2_dpy->dri2_loader_extension.base;
+ dri2_dpy->extensions[1] = &image_lookup_extension.base;
+ dri2_dpy->extensions[2] = &use_invalidate.base;
+ dri2_dpy->extensions[3] = NULL;
+
+ if (!dri2_create_screen(disp)) {
+ err = "DRI2: failed to create screen";
+ goto cleanup_driver;
+ }
+
+ for (i = 0; dri2_dpy->driver_configs[i]; i++) {
+ dri2_add_config(disp, dri2_dpy->driver_configs[i],
+ i + 1, EGL_WINDOW_BIT, NULL, NULL);
+ }
+
+ disp->Extensions.KHR_image_base = EGL_TRUE;
+
+ /* Fill vtbl last to prevent accidentally calling virtual function during
+ * initialization.
+ */
+ dri2_dpy->vtbl = &dri2_surfaceless_display_vtbl;
+
+ return EGL_TRUE;
+
+cleanup_driver:
+ dlclose(dri2_dpy->driver);
+ free(dri2_dpy->driver_name);
+ close(dri2_dpy->fd);
+cleanup_display:
+ free(dri2_dpy);
+
+ return _eglError(EGL_NOT_INITIALIZED, err);
+}
projects / mesa.git / commitdiff