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https://gitlab.freedesktop.org/wayland/weston
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![Michael Tretter](/assets/img/avatar_default.png)
Additional devices don't have a gbm device. Therefore, we cannot create gbm bos for the cursor. If the output device differs from the gbm device, fall back to the allocation of a dumb buffer for the cursor on the output device. Update the cursor sprite with a memcpy to the already mapped dumb buffer that belongs to the current cursor. Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
329 lines
9.7 KiB
C
329 lines
9.7 KiB
C
/*
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* Copyright © 2008-2011 Kristian Høgsberg
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* Copyright © 2011 Intel Corporation
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* Copyright © 2017, 2018 Collabora, Ltd.
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* Copyright © 2017, 2018 General Electric Company
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* Copyright (c) 2018 DisplayLink (UK) Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "config.h"
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#include <errno.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <string.h>
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#include <dlfcn.h>
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#include "drm-internal.h"
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#include "pixman-renderer.h"
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#include "pixel-formats.h"
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#include "renderer-gl/gl-renderer.h"
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#include "shared/weston-egl-ext.h"
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#include "linux-dmabuf.h"
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#include "linux-explicit-synchronization.h"
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static struct gbm_device *
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create_gbm_device(int fd)
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{
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struct gbm_device *gbm;
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/* GBM will load a dri driver, but even though they need symbols from
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* libglapi, in some version of Mesa they are not linked to it. Since
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* only the gl-renderer module links to it, the call above won't make
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* these symbols globally available, and loading the DRI driver fails.
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* Workaround this by dlopen()'ing libglapi with RTLD_GLOBAL. */
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dlopen("libglapi.so.0", RTLD_LAZY | RTLD_GLOBAL);
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gbm = gbm_create_device(fd);
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return gbm;
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}
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/* When initializing EGL, if the preferred buffer format isn't available
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* we may be able to substitute an ARGB format for an XRGB one.
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*
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* This returns NULL if substitution isn't possible. The caller is responsible
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* for checking for NULL before calling gl_renderer->create().
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*
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* This works around https://bugs.freedesktop.org/show_bug.cgi?id=89689
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* but it's entirely possible we'll see this again on other implementations.
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*/
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static const struct pixel_format_info *
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fallback_format_for(const struct pixel_format_info *format)
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{
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return pixel_format_get_info_by_opaque_substitute(format->format);
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}
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static int
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drm_backend_create_gl_renderer(struct drm_backend *b)
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{
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const struct pixel_format_info *format[3] = {
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b->format,
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fallback_format_for(b->format),
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NULL,
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};
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struct gl_renderer_display_options options = {
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.egl_platform = EGL_PLATFORM_GBM_KHR,
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.egl_native_display = b->gbm,
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.egl_surface_type = EGL_WINDOW_BIT,
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.formats = format,
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.formats_count = 2,
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};
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if (format[1])
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options.formats_count = 3;
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return weston_compositor_init_renderer(b->compositor,
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WESTON_RENDERER_GL,
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&options.base);
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}
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int
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init_egl(struct drm_backend *b)
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{
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struct drm_device *device = b->drm;
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b->gbm = create_gbm_device(device->drm.fd);
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if (!b->gbm)
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return -1;
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if (drm_backend_create_gl_renderer(b) < 0) {
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gbm_device_destroy(b->gbm);
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b->gbm = NULL;
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return -1;
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}
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return 0;
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}
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static void drm_output_fini_cursor_egl(struct drm_output *output)
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{
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unsigned int i;
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for (i = 0; i < ARRAY_LENGTH(output->gbm_cursor_fb); i++) {
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/* This cursor does not have a GBM device */
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if (output->gbm_cursor_fb[i] && !output->gbm_cursor_fb[i]->bo)
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output->gbm_cursor_fb[i]->type = BUFFER_PIXMAN_DUMB;
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drm_fb_unref(output->gbm_cursor_fb[i]);
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output->gbm_cursor_fb[i] = NULL;
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}
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}
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static int
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drm_output_init_cursor_egl(struct drm_output *output, struct drm_backend *b)
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{
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struct drm_device *device = output->device;
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unsigned int i;
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/* No point creating cursors if we don't have a plane for them. */
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if (!output->cursor_plane)
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return 0;
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for (i = 0; i < ARRAY_LENGTH(output->gbm_cursor_fb); i++) {
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struct gbm_bo *bo;
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if (gbm_device_get_fd(b->gbm) != output->device->drm.fd) {
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output->gbm_cursor_fb[i] =
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drm_fb_create_dumb(output->device,
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device->cursor_width,
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device->cursor_height,
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DRM_FORMAT_ARGB8888);
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/* Override buffer type, since we know it is a cursor */
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output->gbm_cursor_fb[i]->type = BUFFER_CURSOR;
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output->gbm_cursor_handle[i] =
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output->gbm_cursor_fb[i]->handles[0];
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} else {
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bo = gbm_bo_create(b->gbm, device->cursor_width, device->cursor_height,
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GBM_FORMAT_ARGB8888,
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GBM_BO_USE_CURSOR | GBM_BO_USE_WRITE);
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if (!bo)
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goto err;
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output->gbm_cursor_fb[i] =
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drm_fb_get_from_bo(bo, device, false, BUFFER_CURSOR);
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if (!output->gbm_cursor_fb[i]) {
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gbm_bo_destroy(bo);
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goto err;
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}
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output->gbm_cursor_handle[i] = gbm_bo_get_handle(bo).s32;
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}
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}
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return 0;
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err:
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weston_log("cursor buffers unavailable, using gl cursors\n");
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device->cursors_are_broken = true;
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drm_output_fini_cursor_egl(output);
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return -1;
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}
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static void
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create_gbm_surface(struct gbm_device *gbm, struct drm_output *output)
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{
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struct weston_mode *mode = output->base.current_mode;
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struct drm_plane *plane = output->scanout_plane;
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struct weston_drm_format *fmt;
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const uint64_t *modifiers;
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unsigned int num_modifiers;
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fmt = weston_drm_format_array_find_format(&plane->formats,
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output->format->format);
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if (!fmt) {
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weston_log("format %s not supported by output %s\n",
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output->format->drm_format_name,
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output->base.name);
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return;
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}
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#ifdef HAVE_GBM_MODIFIERS
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if (!weston_drm_format_has_modifier(fmt, DRM_FORMAT_MOD_INVALID)) {
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modifiers = weston_drm_format_get_modifiers(fmt, &num_modifiers);
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output->gbm_surface =
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gbm_surface_create_with_modifiers(gbm,
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mode->width, mode->height,
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output->format->format,
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modifiers, num_modifiers);
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}
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#endif
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/*
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* If we cannot use modifiers to allocate the GBM surface and the GBM
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* device differs from the KMS display device (because we are rendering
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* on a different GPU), we have to use linear buffers to make sure that
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* the allocated GBM surface is correctly displayed on the KMS device.
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*/
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if (gbm_device_get_fd(gbm) != output->device->drm.fd)
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output->gbm_bo_flags |= GBM_BO_USE_LINEAR;
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/* We may allocate with no modifiers in the following situations:
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*
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* 1. old GBM version, so HAVE_GBM_MODIFIERS is false;
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* 2. the KMS driver does not support modifiers;
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* 3. if allocating with modifiers failed, what can happen when the KMS
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* display device supports modifiers but the GBM driver does not,
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* e.g. the old i915 Mesa driver.
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*/
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if (!output->gbm_surface)
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output->gbm_surface = gbm_surface_create(gbm,
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mode->width, mode->height,
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output->format->format,
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output->gbm_bo_flags);
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}
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/* Init output state that depends on gl or gbm */
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int
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drm_output_init_egl(struct drm_output *output, struct drm_backend *b)
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{
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const struct weston_renderer *renderer = b->compositor->renderer;
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const struct weston_mode *mode = output->base.current_mode;
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const struct pixel_format_info *format[2] = {
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output->format,
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fallback_format_for(output->format),
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};
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struct gl_renderer_output_options options = {
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.formats = format,
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.formats_count = 1,
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.area.x = 0,
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.area.y = 0,
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.area.width = mode->width,
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.area.height = mode->height,
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.fb_size.width = mode->width,
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.fb_size.height = mode->height,
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};
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assert(output->gbm_surface == NULL);
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create_gbm_surface(b->gbm, output);
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if (!output->gbm_surface) {
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weston_log("failed to create gbm surface\n");
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return -1;
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}
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if (options.formats[1])
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options.formats_count = 2;
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options.window_for_legacy = (EGLNativeWindowType) output->gbm_surface;
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options.window_for_platform = output->gbm_surface;
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if (renderer->gl->output_window_create(&output->base, &options) < 0) {
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weston_log("failed to create gl renderer output state\n");
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gbm_surface_destroy(output->gbm_surface);
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output->gbm_surface = NULL;
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return -1;
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}
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drm_output_init_cursor_egl(output, b);
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return 0;
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}
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void
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drm_output_fini_egl(struct drm_output *output)
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{
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struct drm_backend *b = output->backend;
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const struct weston_renderer *renderer = b->compositor->renderer;
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/* Destroying the GBM surface will destroy all our GBM buffers,
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* regardless of refcount. Ensure we destroy them here. */
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if (!b->shutting_down &&
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output->scanout_plane->state_cur->fb &&
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output->scanout_plane->state_cur->fb->type == BUFFER_GBM_SURFACE) {
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drm_plane_reset_state(output->scanout_plane);
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}
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renderer->gl->output_destroy(&output->base);
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gbm_surface_destroy(output->gbm_surface);
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output->gbm_surface = NULL;
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drm_output_fini_cursor_egl(output);
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}
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struct drm_fb *
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drm_output_render_gl(struct drm_output_state *state, pixman_region32_t *damage)
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{
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struct drm_output *output = state->output;
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struct drm_device *device = output->device;
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struct gbm_bo *bo;
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struct drm_fb *ret;
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output->base.compositor->renderer->repaint_output(&output->base,
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damage, NULL);
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bo = gbm_surface_lock_front_buffer(output->gbm_surface);
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if (!bo) {
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weston_log("failed to lock front buffer: %s\n",
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strerror(errno));
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return NULL;
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}
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/* The renderer always produces an opaque image. */
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ret = drm_fb_get_from_bo(bo, device, true, BUFFER_GBM_SURFACE);
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if (!ret) {
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weston_log("failed to get drm_fb for bo\n");
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gbm_surface_release_buffer(output->gbm_surface, bo);
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return NULL;
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}
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ret->gbm_surface = output->gbm_surface;
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return ret;
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}
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