#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,
+static __DRIimage*
+surfaceless_alloc_image(struct dri2_egl_display *dri2_dpy,
+ struct dri2_egl_surface *dri2_surf)
+{
+ return dri2_dpy->image->createImage(
+ dri2_dpy->dri_screen,
+ dri2_surf->base.Width,
+ dri2_surf->base.Height,
+ dri2_surf->visual,
+ 0,
+ NULL);
+}
+
+static void
+surfaceless_free_images(struct dri2_egl_surface *dri2_surf)
+{
+ struct dri2_egl_display *dri2_dpy =
+ dri2_egl_display(dri2_surf->base.Resource.Display);
+
+ if (dri2_surf->front) {
+ dri2_dpy->image->destroyImage(dri2_surf->front);
+ dri2_surf->front = NULL;
+ }
+
+ free(dri2_surf->swrast_device_buffer);
+ dri2_surf->swrast_device_buffer = NULL;
+}
+
+static int
+surfaceless_image_get_buffers(__DRIdrawable *driDrawable,
+ unsigned int format,
+ uint32_t *stamp,
+ void *loaderPrivate,
+ uint32_t buffer_mask,
+ struct __DRIimageList *buffers)
+{
+ struct dri2_egl_surface *dri2_surf = loaderPrivate;
+ struct dri2_egl_display *dri2_dpy =
+ dri2_egl_display(dri2_surf->base.Resource.Display);
+
+ buffers->image_mask = 0;
+ buffers->front = NULL;
+ buffers->back = NULL;
+
+ /* The EGL 1.5 spec states that pbuffers are single-buffered. Specifically,
+ * the spec states that they have a back buffer but no front buffer, in
+ * contrast to pixmaps, which have a front buffer but no back buffer.
+ *
+ * Single-buffered surfaces with no front buffer confuse Mesa; so we deviate
+ * from the spec, following the precedent of Mesa's EGL X11 platform. The
+ * X11 platform correctly assigns pbuffers to single-buffered configs, but
+ * assigns the pbuffer a front buffer instead of a back buffer.
+ *
+ * Pbuffers in the X11 platform mostly work today, so let's just copy its
+ * behavior instead of trying to fix (and hence potentially breaking) the
+ * world.
+ */
+
+ if (buffer_mask & __DRI_IMAGE_BUFFER_FRONT) {
+
+ if (!dri2_surf->front)
+ dri2_surf->front =
+ surfaceless_alloc_image(dri2_dpy, dri2_surf);
+
+ buffers->image_mask |= __DRI_IMAGE_BUFFER_FRONT;
+ buffers->front = dri2_surf->front;
+ }
+
+ return 1;
+}
+
+static _EGLSurface *
+dri2_surfaceless_create_surface(_EGLDriver *drv, _EGLDisplay *disp, EGLint type,
+ _EGLConfig *conf, const EGLint *attrib_list)
+{
+ struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
+ struct dri2_egl_config *dri2_conf = dri2_egl_config(conf);
+ struct dri2_egl_surface *dri2_surf;
+ const __DRIconfig *config;
+
+ /* Make sure to calloc so all pointers
+ * are originally NULL.
+ */
+ dri2_surf = calloc(1, sizeof *dri2_surf);
+
+ if (!dri2_surf) {
+ _eglError(EGL_BAD_ALLOC, "eglCreatePbufferSurface");
+ return NULL;
+ }
+
+ if (!dri2_init_surface(&dri2_surf->base, disp, type, conf, attrib_list,
+ false, NULL))
+ goto cleanup_surface;
+
+ config = dri2_get_dri_config(dri2_conf, type,
+ dri2_surf->base.GLColorspace);
+
+ if (!config) {
+ _eglError(EGL_BAD_MATCH, "Unsupported surfacetype/colorspace configuration");
+ goto cleanup_surface;
+ }
+
+ dri2_surf->visual = dri2_image_format_for_pbuffer_config(dri2_dpy, config);
+ if (dri2_surf->visual == __DRI_IMAGE_FORMAT_NONE)
+ goto cleanup_surface;
+
+ if (!dri2_create_drawable(dri2_dpy, config, dri2_surf, dri2_surf))
+ goto cleanup_surface;
+
+ return &dri2_surf->base;
+
+ cleanup_surface:
+ free(dri2_surf);
+ return NULL;
+}
+
+static EGLBoolean
+surfaceless_destroy_surface(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf)
+{
+ struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
+ struct dri2_egl_surface *dri2_surf = dri2_egl_surface(surf);
+
+ surfaceless_free_images(dri2_surf);
+
+ dri2_dpy->core->destroyDrawable(dri2_surf->dri_drawable);
+
+ dri2_fini_surface(surf);
+ free(dri2_surf);
+ return EGL_TRUE;
+}
+
+static _EGLSurface *
+dri2_surfaceless_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *disp,
+ _EGLConfig *conf, const EGLint *attrib_list)
+{
+ return dri2_surfaceless_create_surface(drv, disp, EGL_PBUFFER_BIT, conf,
+ attrib_list);
+}
+
+static const struct dri2_egl_display_vtbl dri2_surfaceless_display_vtbl = {
+ .create_pbuffer_surface = dri2_surfaceless_create_pbuffer_surface,
+ .destroy_surface = surfaceless_destroy_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,
+ .get_dri_drawable = dri2_surface_get_dri_drawable,
};
static void
{
}
-static __DRIbuffer *
-surfaceless_get_buffers_with_format(__DRIdrawable * driDrawable,
- int *width, int *height,
- unsigned int *attachments, int count,
- int *out_count, void *loaderPrivate)
+static unsigned
+surfaceless_get_capability(void *loaderPrivate, enum dri_loader_cap cap)
{
- struct dri2_egl_surface *dri2_surf = loaderPrivate;
+ /* Note: loaderPrivate is _EGLDisplay* */
+ switch (cap) {
+ case DRI_LOADER_CAP_FP16:
+ return 1;
+ default:
+ return 0;
+ }
+}
- 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;
+static const __DRIimageLoaderExtension image_loader_extension = {
+ .base = { __DRI_IMAGE_LOADER, 2 },
+ .getBuffers = surfaceless_image_get_buffers,
+ .flushFrontBuffer = surfaceless_flush_front_buffer,
+ .getCapability = surfaceless_get_capability,
+};
+
+static const __DRIextension *image_loader_extensions[] = {
+ &image_loader_extension.base,
+ &image_lookup_extension.base,
+ &use_invalidate.base,
+ NULL,
+};
+
+static const __DRIextension *swrast_loader_extensions[] = {
+ &swrast_pbuffer_loader_extension.base,
+ &image_loader_extension.base,
+ &image_lookup_extension.base,
+ &use_invalidate.base,
+ NULL,
+};
+
+static bool
+surfaceless_probe_device(_EGLDisplay *disp, bool swrast)
+{
+#define MAX_DRM_DEVICES 64
+ const unsigned node_type = swrast ? DRM_NODE_PRIMARY : DRM_NODE_RENDER;
+ struct dri2_egl_display *dri2_dpy = disp->DriverData;
+ drmDevicePtr device, devices[MAX_DRM_DEVICES] = { NULL };
+ int i, num_devices;
+
+ num_devices = drmGetDevices2(0, devices, ARRAY_SIZE(devices));
+ if (num_devices < 0)
+ return false;
+
+ for (i = 0; i < num_devices; ++i) {
+ device = devices[i];
+
+ if (!(device->available_nodes & (1 << node_type)))
+ continue;
+
+ dri2_dpy->fd = loader_open_device(device->nodes[node_type]);
+ if (dri2_dpy->fd < 0)
+ continue;
+
+ disp->Device = _eglAddDevice(dri2_dpy->fd, swrast);
+ if (!disp->Device) {
+ close(dri2_dpy->fd);
+ dri2_dpy->fd = -1;
+ continue;
+ }
+
+ char *driver_name = loader_get_driver_for_fd(dri2_dpy->fd);
+ if (swrast) {
+ /* Use kms swrast only with vgem / virtio_gpu.
+ * virtio-gpu fallbacks to software rendering when 3D features
+ * are unavailable since 6c5ab, and kms_swrast is more
+ * feature complete than swrast.
+ */
+ if (driver_name &&
+ (strcmp(driver_name, "vgem") == 0 ||
+ strcmp(driver_name, "virtio_gpu") == 0))
+ dri2_dpy->driver_name = strdup("kms_swrast");
+ free(driver_name);
+ } else {
+ /* Use the given hardware driver */
+ dri2_dpy->driver_name = driver_name;
+ }
+
+ if (dri2_dpy->driver_name && dri2_load_driver_dri3(disp))
+ break;
+
+ free(dri2_dpy->driver_name);
+ dri2_dpy->driver_name = NULL;
+ close(dri2_dpy->fd);
+ dri2_dpy->fd = -1;
+ }
+ drmFreeDevices(devices, num_devices);
+
+ if (i == num_devices)
+ return false;
+
+ if (swrast)
+ dri2_dpy->loader_extensions = swrast_loader_extensions;
+ else
+ dri2_dpy->loader_extensions = image_loader_extensions;
+
+ return true;
}
-#define DRM_RENDER_DEV_NAME "%s/renderD%d"
+static bool
+surfaceless_probe_device_sw(_EGLDisplay *disp)
+{
+ struct dri2_egl_display *dri2_dpy = disp->DriverData;
+
+ dri2_dpy->fd = -1;
+ disp->Device = _eglAddDevice(dri2_dpy->fd, true);
+ assert(disp->Device);
+
+ dri2_dpy->driver_name = strdup("swrast");
+ if (!dri2_dpy->driver_name)
+ return false;
+
+ if (!dri2_load_driver_swrast(disp)) {
+ free(dri2_dpy->driver_name);
+ dri2_dpy->driver_name = NULL;
+ return false;
+ }
+
+ dri2_dpy->loader_extensions = swrast_loader_extensions;
+ return true;
+}
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);
+ bool driver_loaded = false;
dri2_dpy = calloc(1, sizeof *dri2_dpy);
if (!dri2_dpy)
return _eglError(EGL_BAD_ALLOC, "eglInitialize");
+ dri2_dpy->fd = -1;
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;
-
- dri2_dpy->fd = loader_open_device(card_path);
-
- 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 (!disp->Options.ForceSoftware) {
+ driver_loaded = surfaceless_probe_device(disp, false);
+ if (!driver_loaded)
+ _eglLog(_EGL_WARNING,
+ "No hardware driver found, falling back to software rendering");
}
+ if (!driver_loaded)
+ driver_loaded = surfaceless_probe_device(disp, true);
+
if (!driver_loaded) {
- err = "DRI2: failed to load driver";
- goto cleanup_display;
+ _eglLog(_EGL_DEBUG, "Falling back to surfaceless swrast without DRM.");
+ if (!surfaceless_probe_device_sw(disp)) {
+ err = "DRI2: failed to load driver";
+ goto cleanup;
+ }
}
- 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;
+ goto cleanup;
}
- 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);
+ if (!dri2_setup_extensions(disp)) {
+ err = "DRI2: failed to find required DRI extensions";
+ goto cleanup;
}
- disp->Extensions.KHR_image_base = EGL_TRUE;
+ dri2_setup_screen(disp);
+#ifdef HAVE_WAYLAND_PLATFORM
+ dri2_dpy->device_name = loader_get_device_name_for_fd(dri2_dpy->fd);
+#endif
+ dri2_set_WL_bind_wayland_display(drv, disp);
+
+ if (!dri2_add_pbuffer_configs_for_visuals(drv, disp)) {
+ err = "DRI2: failed to add configs";
+ goto cleanup;
+ }
/* Fill vtbl last to prevent accidentally calling virtual function during
* initialization.
return EGL_TRUE;
-cleanup_driver:
- dlclose(dri2_dpy->driver);
- free(dri2_dpy->driver_name);
- close(dri2_dpy->fd);
-cleanup_display:
- free(dri2_dpy);
-
+cleanup:
+ dri2_display_destroy(disp);
return _eglError(EGL_NOT_INITIALIZED, err);
}
projects / mesa.git / blobdiff