/* * 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 #include #include #include #include #include #include #include #include #include "egl_dri2.h" #include "egl_dri2_fallbacks.h" #include "loader.h" 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; } } 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)) goto cleanup_surface; config = dri2_get_dri_config(dri2_conf, type, dri2_surf->base.GLColorspace); if (!config) goto cleanup_surface; dri2_surf->dri_drawable = dri2_dpy->image_driver->createNewDrawable(dri2_dpy->dri_screen, config, dri2_surf); if (dri2_surf->dri_drawable == NULL) { _eglError(EGL_BAD_ALLOC, "image->createNewDrawable"); 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 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 EGLBoolean surfaceless_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf) { assert(!surf || surf->Type == EGL_PBUFFER_BIT); /* From the EGL 1.5 spec: * If surface is a [...] pbuffer surface, eglSwapBuffers has no effect. */ return EGL_TRUE; } static EGLBoolean surfaceless_add_configs_for_visuals(_EGLDriver *drv, _EGLDisplay *dpy) { struct dri2_egl_display *dri2_dpy = dri2_egl_display(dpy); 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(dpy, 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_surfaceless_display_vtbl = { .create_pixmap_surface = dri2_fallback_create_pixmap_surface, .create_pbuffer_surface = dri2_surfaceless_create_pbuffer_surface, .destroy_surface = surfaceless_destroy_surface, .create_image = dri2_create_image_khr, .swap_buffers = surfaceless_swap_buffers, .swap_buffers_with_damage = dri2_fallback_swap_buffers_with_damage, .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 surfaceless_flush_front_buffer(__DRIdrawable *driDrawable, void *loaderPrivate) { } static const __DRIimageLoaderExtension image_loader_extension = { .base = { __DRI_IMAGE_LOADER, 1 }, .getBuffers = surfaceless_image_get_buffers, .flushFrontBuffer = surfaceless_flush_front_buffer, }; #define DRM_RENDER_DEV_NAME "%s/renderD%d" static const __DRIextension *image_loader_extensions[] = { &image_loader_extension.base, &image_lookup_extension.base, &use_invalidate.base, NULL, }; static bool surfaceless_probe_device(_EGLDisplay *dpy, bool swrast) { struct dri2_egl_display *dri2_dpy = dpy->DriverData; const int limit = 64; const int base = 128; int fd; int i; for (i = 0; i < limit; ++i) { char *card_path; if (asprintf(&card_path, DRM_RENDER_DEV_NAME, DRM_DIR_NAME, base + i) < 0) continue; fd = loader_open_device(card_path); free(card_path); if (fd < 0) continue; if (swrast) dri2_dpy->driver_name = strdup("kms_swrast"); else dri2_dpy->driver_name = loader_get_driver_for_fd(fd); if (!dri2_dpy->driver_name) { close(fd); continue; } dri2_dpy->fd = fd; if (dri2_load_driver_dri3(dpy)) return true; close(fd); dri2_dpy->fd = -1; free(dri2_dpy->driver_name); dri2_dpy->driver_name = NULL; } return false; } EGLBoolean dri2_initialize_surfaceless(_EGLDriver *drv, _EGLDisplay *disp) { struct dri2_egl_display *dri2_dpy; const char* err; bool driver_loaded = false; loader_set_logger(_eglLog); 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; 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 && !surfaceless_probe_device(disp, true)) { err = "DRI2: failed to load driver"; goto cleanup; } dri2_dpy->loader_extensions = image_loader_extensions; 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 (!surfaceless_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_surfaceless_display_vtbl; return EGL_TRUE; cleanup: dri2_display_destroy(disp); return _eglError(EGL_NOT_INITIALIZED, err); }