/* * Copyright © 2008-2011 Kristian Høgsberg * Copyright © 2011 Intel Corporation * Copyright © 2017, 2018 Collabora, Ltd. * Copyright © 2017, 2018 General Electric Company * Copyright (c) 2018 DisplayLink (UK) Ltd. * * 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 (including the * next paragraph) 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 "config.h" #include #include #include #include #include #include #include "drm-internal.h" #include "pixman-renderer.h" #include "pixel-formats.h" #include "renderer-gl/gl-renderer.h" #include "shared/weston-egl-ext.h" #include "linux-dmabuf.h" #include "linux-explicit-synchronization.h" static struct gbm_device * create_gbm_device(int fd) { struct gbm_device *gbm; /* GBM will load a dri driver, but even though they need symbols from * libglapi, in some version of Mesa they are not linked to it. Since * only the gl-renderer module links to it, the call above won't make * these symbols globally available, and loading the DRI driver fails. * Workaround this by dlopen()'ing libglapi with RTLD_GLOBAL. */ dlopen("libglapi.so.0", RTLD_LAZY | RTLD_GLOBAL); gbm = gbm_create_device(fd); return gbm; } /* When initializing EGL, if the preferred buffer format isn't available * we may be able to substitute an ARGB format for an XRGB one. * * This returns NULL if substitution isn't possible. The caller is responsible * for checking for NULL before calling gl_renderer->create(). * * This works around https://bugs.freedesktop.org/show_bug.cgi?id=89689 * but it's entirely possible we'll see this again on other implementations. */ static const struct pixel_format_info * fallback_format_for(const struct pixel_format_info *format) { return pixel_format_get_info_by_opaque_substitute(format->format); } static int drm_backend_create_gl_renderer(struct drm_backend *b) { const struct pixel_format_info *format[3] = { b->format, fallback_format_for(b->format), NULL, }; struct gl_renderer_display_options options = { .egl_platform = EGL_PLATFORM_GBM_KHR, .egl_native_display = b->gbm, .egl_surface_type = EGL_WINDOW_BIT, .formats = format, .formats_count = 2, }; if (format[1]) options.formats_count = 3; return weston_compositor_init_renderer(b->compositor, WESTON_RENDERER_GL, &options.base); } int init_egl(struct drm_backend *b) { struct drm_device *device = b->drm; b->gbm = create_gbm_device(device->drm.fd); if (!b->gbm) return -1; if (drm_backend_create_gl_renderer(b) < 0) { gbm_device_destroy(b->gbm); b->gbm = NULL; return -1; } return 0; } static void drm_output_fini_cursor_egl(struct drm_output *output) { unsigned int i; for (i = 0; i < ARRAY_LENGTH(output->gbm_cursor_fb); i++) { /* This cursor does not have a GBM device */ if (output->gbm_cursor_fb[i] && !output->gbm_cursor_fb[i]->bo) output->gbm_cursor_fb[i]->type = BUFFER_PIXMAN_DUMB; drm_fb_unref(output->gbm_cursor_fb[i]); output->gbm_cursor_fb[i] = NULL; } } static int drm_output_init_cursor_egl(struct drm_output *output, struct drm_backend *b) { struct drm_device *device = output->device; unsigned int i; /* No point creating cursors if we don't have a plane for them. */ if (!output->cursor_plane) return 0; for (i = 0; i < ARRAY_LENGTH(output->gbm_cursor_fb); i++) { struct gbm_bo *bo; if (gbm_device_get_fd(b->gbm) != output->device->drm.fd) { output->gbm_cursor_fb[i] = drm_fb_create_dumb(output->device, device->cursor_width, device->cursor_height, DRM_FORMAT_ARGB8888); /* Override buffer type, since we know it is a cursor */ output->gbm_cursor_fb[i]->type = BUFFER_CURSOR; output->gbm_cursor_handle[i] = output->gbm_cursor_fb[i]->handles[0]; } else { bo = gbm_bo_create(b->gbm, device->cursor_width, device->cursor_height, GBM_FORMAT_ARGB8888, GBM_BO_USE_CURSOR | GBM_BO_USE_WRITE); if (!bo) goto err; output->gbm_cursor_fb[i] = drm_fb_get_from_bo(bo, device, false, BUFFER_CURSOR); if (!output->gbm_cursor_fb[i]) { gbm_bo_destroy(bo); goto err; } output->gbm_cursor_handle[i] = gbm_bo_get_handle(bo).s32; } } return 0; err: weston_log("cursor buffers unavailable, using gl cursors\n"); device->cursors_are_broken = true; drm_output_fini_cursor_egl(output); return -1; } static void create_gbm_surface(struct gbm_device *gbm, struct drm_output *output) { struct weston_mode *mode = output->base.current_mode; struct drm_plane *plane = output->scanout_plane; struct weston_drm_format *fmt; const uint64_t *modifiers; unsigned int num_modifiers; fmt = weston_drm_format_array_find_format(&plane->formats, output->format->format); if (!fmt) { weston_log("format %s not supported by output %s\n", output->format->drm_format_name, output->base.name); return; } #ifdef HAVE_GBM_MODIFIERS if (!weston_drm_format_has_modifier(fmt, DRM_FORMAT_MOD_INVALID)) { modifiers = weston_drm_format_get_modifiers(fmt, &num_modifiers); output->gbm_surface = gbm_surface_create_with_modifiers(gbm, mode->width, mode->height, output->format->format, modifiers, num_modifiers); } #endif /* * If we cannot use modifiers to allocate the GBM surface and the GBM * device differs from the KMS display device (because we are rendering * on a different GPU), we have to use linear buffers to make sure that * the allocated GBM surface is correctly displayed on the KMS device. */ if (gbm_device_get_fd(gbm) != output->device->drm.fd) output->gbm_bo_flags |= GBM_BO_USE_LINEAR; /* We may allocate with no modifiers in the following situations: * * 1. old GBM version, so HAVE_GBM_MODIFIERS is false; * 2. the KMS driver does not support modifiers; * 3. if allocating with modifiers failed, what can happen when the KMS * display device supports modifiers but the GBM driver does not, * e.g. the old i915 Mesa driver. */ if (!output->gbm_surface) output->gbm_surface = gbm_surface_create(gbm, mode->width, mode->height, output->format->format, output->gbm_bo_flags); } /* Init output state that depends on gl or gbm */ int drm_output_init_egl(struct drm_output *output, struct drm_backend *b) { const struct weston_renderer *renderer = b->compositor->renderer; const struct weston_mode *mode = output->base.current_mode; const struct pixel_format_info *format[2] = { output->format, fallback_format_for(output->format), }; struct gl_renderer_output_options options = { .formats = format, .formats_count = 1, .area.x = 0, .area.y = 0, .area.width = mode->width, .area.height = mode->height, .fb_size.width = mode->width, .fb_size.height = mode->height, }; assert(output->gbm_surface == NULL); create_gbm_surface(b->gbm, output); if (!output->gbm_surface) { weston_log("failed to create gbm surface\n"); return -1; } if (options.formats[1]) options.formats_count = 2; options.window_for_legacy = (EGLNativeWindowType) output->gbm_surface; options.window_for_platform = output->gbm_surface; if (renderer->gl->output_window_create(&output->base, &options) < 0) { weston_log("failed to create gl renderer output state\n"); gbm_surface_destroy(output->gbm_surface); output->gbm_surface = NULL; return -1; } drm_output_init_cursor_egl(output, b); return 0; } void drm_output_fini_egl(struct drm_output *output) { struct drm_backend *b = output->backend; const struct weston_renderer *renderer = b->compositor->renderer; /* Destroying the GBM surface will destroy all our GBM buffers, * regardless of refcount. Ensure we destroy them here. */ if (!b->compositor->shutting_down && output->scanout_plane->state_cur->fb && output->scanout_plane->state_cur->fb->type == BUFFER_GBM_SURFACE) { drm_plane_reset_state(output->scanout_plane); } renderer->gl->output_destroy(&output->base); gbm_surface_destroy(output->gbm_surface); output->gbm_surface = NULL; drm_output_fini_cursor_egl(output); } struct drm_fb * drm_output_render_gl(struct drm_output_state *state, pixman_region32_t *damage) { struct drm_output *output = state->output; struct drm_device *device = output->device; struct gbm_bo *bo; struct drm_fb *ret; output->base.compositor->renderer->repaint_output(&output->base, damage, NULL); bo = gbm_surface_lock_front_buffer(output->gbm_surface); if (!bo) { weston_log("failed to lock front buffer: %s\n", strerror(errno)); return NULL; } /* The renderer always produces an opaque image. */ ret = drm_fb_get_from_bo(bo, device, true, BUFFER_GBM_SURFACE); if (!ret) { weston_log("failed to get drm_fb for bo\n"); gbm_surface_release_buffer(output->gbm_surface, bo); return NULL; } ret->gbm_surface = output->gbm_surface; return ret; }