--- /dev/null
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright 2018 Collabora
+ *
+ * Based on platform_surfaceless, which has:
+ *
+ * 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.
+ */
+#ifdef HAVE_LIBDRM
+#include <xf86drm.h>
+#endif
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.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 __DRIimage*
+device_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
+device_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;
+ }
+}
+
+static int
+device_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 =
+ device_alloc_image(dri2_dpy, dri2_surf);
+
+ buffers->image_mask |= __DRI_IMAGE_BUFFER_FRONT;
+ buffers->front = dri2_surf->front;
+ }
+
+ return 1;
+}
+
+static _EGLSurface *
+dri2_device_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;
+ }
+
+ if (!dri2_create_drawable(dri2_dpy, config, dri2_surf))
+ goto cleanup_surface;
+
+ if (conf->RedSize == 5)
+ dri2_surf->visual = __DRI_IMAGE_FORMAT_RGB565;
+ else if (conf->AlphaSize == 0)
+ dri2_surf->visual = __DRI_IMAGE_FORMAT_XRGB8888;
+ else
+ dri2_surf->visual = __DRI_IMAGE_FORMAT_ARGB8888;
+
+ return &dri2_surf->base;
+
+ cleanup_surface:
+ free(dri2_surf);
+ return NULL;
+}
+
+static EGLBoolean
+device_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);
+
+ device_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_device_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *disp,
+ _EGLConfig *conf, const EGLint *attrib_list)
+{
+ return dri2_device_create_surface(drv, disp, EGL_PBUFFER_BIT, conf,
+ attrib_list);
+}
+
+static EGLBoolean
+device_add_configs_for_visuals(_EGLDriver *drv, _EGLDisplay *disp)
+{
+ struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
+ static const struct {
+ const char *format_name;
+ unsigned int rgba_masks[4];
+ } visuals[] = {
+ { "ARGB8888", { 0xff0000, 0xff00, 0xff, 0xff000000 } },
+ { "RGB888", { 0xff0000, 0xff00, 0xff, 0x0 } },
+ { "RGB565", { 0x00f800, 0x07e0, 0x1f, 0x0 } },
+ };
+ unsigned int format_count[ARRAY_SIZE(visuals)] = { 0 };
+ unsigned int config_count = 0;
+
+ for (unsigned i = 0; dri2_dpy->driver_configs[i] != NULL; i++) {
+ for (unsigned j = 0; j < ARRAY_SIZE(visuals); j++) {
+ struct dri2_egl_config *dri2_conf;
+
+ dri2_conf = dri2_add_config(disp, dri2_dpy->driver_configs[i],
+ config_count + 1, EGL_PBUFFER_BIT, NULL,
+ visuals[j].rgba_masks);
+
+ if (dri2_conf) {
+ if (dri2_conf->base.ConfigID == config_count + 1)
+ config_count++;
+ format_count[j]++;
+ }
+ }
+ }
+
+ for (unsigned i = 0; i < ARRAY_SIZE(format_count); i++) {
+ if (!format_count[i]) {
+ _eglLog(_EGL_DEBUG, "No DRI config supports native format %s",
+ visuals[i].format_name);
+ }
+ }
+
+ return (config_count != 0);
+}
+
+static const struct dri2_egl_display_vtbl dri2_device_display_vtbl = {
+ .create_pixmap_surface = dri2_fallback_create_pixmap_surface,
+ .create_pbuffer_surface = dri2_device_create_pbuffer_surface,
+ .destroy_surface = device_destroy_surface,
+ .create_image = dri2_create_image_khr,
+ .swap_buffers_region = dri2_fallback_swap_buffers_region,
+ .set_damage_region = dri2_fallback_set_damage_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
+device_flush_front_buffer(__DRIdrawable *driDrawable, void *loaderPrivate)
+{
+}
+
+static const __DRIimageLoaderExtension image_loader_extension = {
+ .base = { __DRI_IMAGE_LOADER, 1 },
+ .getBuffers = device_image_get_buffers,
+ .flushFrontBuffer = device_flush_front_buffer,
+};
+
+static void
+device_get_drawable_info(__DRIdrawable * draw,
+ int *x, int *y, int *w, int *h,
+ void *loaderPrivate)
+{
+ struct dri2_egl_surface *dri2_surf = loaderPrivate;
+
+ *x = *y = 0;
+ *w = dri2_surf->base.Width;
+ *h = dri2_surf->base.Height;
+}
+
+/* HACK: technically we should have swrast_null, instead of these. We
+ * get away since only pbuffers are supported, thus the callbacks are
+ * unused.
+ */
+static const __DRIswrastLoaderExtension swrast_loader_extension = {
+ .base = { __DRI_SWRAST_LOADER, 1 },
+ .getDrawableInfo = device_get_drawable_info,
+ .putImage = NULL,
+ .getImage = NULL,
+};
+
+static const __DRIextension *image_loader_extensions[] = {
+ &image_loader_extension.base,
+ &image_lookup_extension.base,
+ &use_invalidate.base,
+ NULL,
+};
+
+/* HACK: second part of the hack above. */
+static const __DRIextension *swrast_loader_extensions[] = {
+ &swrast_loader_extension.base,
+ &image_lookup_extension.base,
+ &use_invalidate.base,
+ NULL,
+};
+
+static int
+device_get_fd(_EGLDisplay *disp, _EGLDevice *dev)
+{
+#ifdef HAVE_LIBDRM
+ int fd = disp->Options.fd;
+ /* The fcntl() code in _eglGetDeviceDisplay() ensures that valid fd >= 3,
+ * and invalid one is 0.
+ */
+ if (fd) {
+ /* According to the spec - if the FD does not match the EGLDevice
+ * behaviour is undefined.
+ *
+ * Add a trivial sanity check since it doesn't cost us anything.
+ */
+ if (dev != _eglAddDevice(fd, false))
+ return -1;
+
+ /* No EGL_EXT_output* extensions are supported, hence no master perms
+ * are needed. Get the render one - otherwise drivers might error out.
+ */
+ char *node = drmGetRenderDeviceNameFromFd(fd);
+
+ /* Don't close the internal fd, get render node one based on it. */
+ fd = loader_open_device(node);
+ free(node);
+ return fd;
+ }
+ const char *node = _eglGetDRMDeviceRenderNode(dev);
+ return loader_open_device(node);
+#else
+ _eglLog(_EGL_FATAL, "Driver bug: Built without libdrm, yet using a HW device");
+ return -1;
+#endif
+}
+
+static bool
+device_probe_device(_EGLDisplay *disp)
+{
+ struct dri2_egl_display *dri2_dpy = disp->DriverData;
+
+ if (disp->Options.ForceSoftware)
+ _eglLog(_EGL_WARNING, "Not allowed to force software rendering when "
+ "API explicitly selects a hardware device.");
+ dri2_dpy->fd = device_get_fd(disp, disp->Device);
+ if (dri2_dpy->fd < 0)
+ return false;
+
+ dri2_dpy->driver_name = loader_get_driver_for_fd(dri2_dpy->fd);
+ if (!dri2_dpy->driver_name)
+ goto err_name;
+
+ if (!dri2_load_driver_dri3(disp))
+ goto err_load;
+
+ dri2_dpy->loader_extensions = image_loader_extensions;
+ return true;
+
+err_load:
+ free(dri2_dpy->driver_name);
+ dri2_dpy->driver_name = NULL;
+
+err_name:
+ close(dri2_dpy->fd);
+ dri2_dpy->fd = -1;
+ return false;
+
+}
+
+static bool
+device_probe_device_sw(_EGLDisplay *disp)
+{
+ struct dri2_egl_display *dri2_dpy = disp->DriverData;
+
+ dri2_dpy->fd = -1;
+ dri2_dpy->driver_name = strdup("swrast");
+ if (!dri2_dpy->driver_name)
+ return false;
+
+ /* HACK: should be driver_swrast_null */
+ 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_device(_EGLDriver *drv, _EGLDisplay *disp)
+{
+ _EGLDevice *dev;
+ struct dri2_egl_display *dri2_dpy;
+ const char* err;
+
+ dri2_dpy = calloc(1, sizeof *dri2_dpy);
+ if (!dri2_dpy)
+ return _eglError(EGL_BAD_ALLOC, "eglInitialize");
+
+ /* Extension requires a PlatformDisplay - the EGLDevice. */
+ dev = disp->PlatformDisplay;
+
+ dri2_dpy->fd = -1;
+ disp->Device = dev;
+ disp->DriverData = (void *) dri2_dpy;
+ err = "DRI2: failed to load driver";
+ if (_eglDeviceSupports(dev, _EGL_DEVICE_DRM)) {
+ if (!device_probe_device(disp))
+ goto cleanup;
+ } else if (_eglDeviceSupports(dev, _EGL_DEVICE_SOFTWARE)) {
+ if (!device_probe_device_sw(disp))
+ goto cleanup;
+ } else {
+ _eglLog(_EGL_FATAL, "Driver bug: exposed device is neither DRM nor SOFTWARE one");
+ return EGL_FALSE;
+ }
+
+ if (!dri2_create_screen(disp)) {
+ err = "DRI2: failed to create screen";
+ goto cleanup;
+ }
+
+ if (!dri2_setup_extensions(disp)) {
+ err = "DRI2: failed to find required DRI extensions";
+ goto cleanup;
+ }
+
+ dri2_setup_screen(disp);
+
+ if (!device_add_configs_for_visuals(drv, disp)) {
+ err = "DRI2: failed to add configs";
+ goto cleanup;
+ }
+
+ /* Fill vtbl last to prevent accidentally calling virtual function during
+ * initialization.
+ */
+ dri2_dpy->vtbl = &dri2_device_display_vtbl;
+
+ return EGL_TRUE;
+
+cleanup:
+ dri2_display_destroy(disp);
+ return _eglError(EGL_NOT_INITIALIZED, err);
+}
projects / mesa.git / commitdiff