/* * 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 #endif #include #include #include #include #include #include #include #include #include "egl_dri2.h" #include "loader.h" #include "util/debug.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; } free(dri2_surf->swrast_device_buffer); dri2_surf->swrast_device_buffer = 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(_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 device_destroy_surface(_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(_EGLDisplay *disp, _EGLConfig *conf, const EGLint *attrib_list) { return dri2_device_create_surface(disp, EGL_PBUFFER_BIT, conf, attrib_list); } static const struct dri2_egl_display_vtbl dri2_device_display_vtbl = { .create_pbuffer_surface = dri2_device_create_pbuffer_surface, .destroy_surface = device_destroy_surface, .create_image = dri2_create_image_khr, .get_dri_drawable = dri2_surface_get_dri_drawable, }; static void device_flush_front_buffer(__DRIdrawable *driDrawable, void *loaderPrivate) { } static unsigned device_get_capability(void *loaderPrivate, enum dri_loader_cap cap) { /* Note: loaderPrivate is _EGLDisplay* */ switch (cap) { case DRI_LOADER_CAP_FP16: return 1; default: return 0; } } static const __DRIimageLoaderExtension image_loader_extension = { .base = { __DRI_IMAGE_LOADER, 2 }, .getBuffers = device_image_get_buffers, .flushFrontBuffer = device_flush_front_buffer, .getCapability = device_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_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 = dri2_egl_display(disp); bool request_software = env_var_as_boolean("LIBGL_ALWAYS_SOFTWARE", false); if (request_software) _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; /* When doing software rendering, some times user still want to explicitly * choose the render node device since cross node import doesn't work between * vgem/virtio_gpu yet. It would be nice to have a new EXTENSION for this. * For now, just fallback to kms_swrast. */ if (disp->Options.ForceSoftware && !request_software && (strcmp(dri2_dpy->driver_name, "vgem") == 0 || strcmp(dri2_dpy->driver_name, "virtio_gpu") == 0)) { free(dri2_dpy->driver_name); _eglLog(_EGL_WARNING, "NEEDS EXTENSION: falling back to kms_swrast"); dri2_dpy->driver_name = strdup("kms_swrast"); } 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 = dri2_egl_display(disp); 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(_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); #ifdef HAVE_WAYLAND_PLATFORM dri2_dpy->device_name = loader_get_device_name_for_fd(dri2_dpy->fd); #endif dri2_set_WL_bind_wayland_display(disp); if (!dri2_add_pbuffer_configs_for_visuals(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); }