mirror of
https://gitlab.freedesktop.org/wlroots/wlroots.git
synced 2024-11-24 08:02:21 +00:00
c5d8f6d187
With this change vulkan renderer can be automatically chosen in two more cases: GLES2 renderer is disabled at compile time GLES2 renderer failed to be created Main purpose of this change is to automatically choose vulkan as renderer when GLES2 renderer is not enabled.
330 lines
8.4 KiB
C
330 lines
8.4 KiB
C
#include <assert.h>
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#include <fcntl.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <wlr/render/interface.h>
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#include <wlr/render/pixman.h>
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#include <wlr/render/wlr_renderer.h>
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#include <wlr/types/wlr_drm.h>
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#include <wlr/types/wlr_linux_dmabuf_v1.h>
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#include <wlr/types/wlr_shm.h>
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#include <wlr/util/box.h>
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#include <wlr/util/log.h>
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#include <xf86drm.h>
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#include <wlr/config.h>
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#if WLR_HAS_GLES2_RENDERER
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#include <wlr/render/egl.h>
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#include <wlr/render/gles2.h>
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#endif
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#if WLR_HAS_VULKAN_RENDERER
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#include <wlr/render/vulkan.h>
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#endif // WLR_HAS_VULKAN_RENDERER
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#include "backend/backend.h"
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#include "render/pixel_format.h"
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#include "render/wlr_renderer.h"
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#include "util/env.h"
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void wlr_renderer_init(struct wlr_renderer *renderer,
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const struct wlr_renderer_impl *impl, uint32_t render_buffer_caps) {
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assert(impl->begin_buffer_pass);
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assert(impl->get_texture_formats);
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assert(render_buffer_caps != 0);
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*renderer = (struct wlr_renderer){
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.impl = impl,
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.render_buffer_caps = render_buffer_caps,
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};
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wl_signal_init(&renderer->events.destroy);
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wl_signal_init(&renderer->events.lost);
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}
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void wlr_renderer_destroy(struct wlr_renderer *r) {
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if (!r) {
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return;
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}
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wl_signal_emit_mutable(&r->events.destroy, r);
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if (r->impl && r->impl->destroy) {
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r->impl->destroy(r);
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} else {
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free(r);
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}
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}
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const struct wlr_drm_format_set *wlr_renderer_get_texture_formats(
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struct wlr_renderer *r, uint32_t buffer_caps) {
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return r->impl->get_texture_formats(r, buffer_caps);
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}
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const struct wlr_drm_format_set *wlr_renderer_get_render_formats(
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struct wlr_renderer *r) {
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if (!r->impl->get_render_formats) {
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return NULL;
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}
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return r->impl->get_render_formats(r);
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}
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bool wlr_renderer_init_wl_shm(struct wlr_renderer *r,
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struct wl_display *wl_display) {
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return wlr_shm_create_with_renderer(wl_display, 2, r) != NULL;
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}
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bool wlr_renderer_init_wl_display(struct wlr_renderer *r,
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struct wl_display *wl_display) {
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if (!wlr_renderer_init_wl_shm(r, wl_display)) {
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return false;
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}
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if (wlr_renderer_get_texture_formats(r, WLR_BUFFER_CAP_DMABUF) != NULL &&
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wlr_renderer_get_drm_fd(r) >= 0 &&
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wlr_linux_dmabuf_v1_create_with_renderer(wl_display, 4, r) == NULL) {
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return false;
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}
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return true;
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}
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static int open_drm_render_node(void) {
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uint32_t flags = 0;
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int devices_len = drmGetDevices2(flags, NULL, 0);
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if (devices_len < 0) {
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wlr_log(WLR_ERROR, "drmGetDevices2 failed: %s", strerror(-devices_len));
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return -1;
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}
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drmDevice **devices = calloc(devices_len, sizeof(*devices));
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if (devices == NULL) {
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wlr_log_errno(WLR_ERROR, "Allocation failed");
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return -1;
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}
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devices_len = drmGetDevices2(flags, devices, devices_len);
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if (devices_len < 0) {
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free(devices);
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wlr_log(WLR_ERROR, "drmGetDevices2 failed: %s", strerror(-devices_len));
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return -1;
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}
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int fd = -1;
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for (int i = 0; i < devices_len; i++) {
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drmDevice *dev = devices[i];
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if (dev->available_nodes & (1 << DRM_NODE_RENDER)) {
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const char *name = dev->nodes[DRM_NODE_RENDER];
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wlr_log(WLR_DEBUG, "Opening DRM render node '%s'", name);
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fd = open(name, O_RDWR | O_CLOEXEC);
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if (fd < 0) {
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wlr_log_errno(WLR_ERROR, "Failed to open '%s'", name);
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goto out;
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}
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break;
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}
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}
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if (fd < 0) {
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wlr_log(WLR_ERROR, "Failed to find any DRM render node");
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}
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out:
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for (int i = 0; i < devices_len; i++) {
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drmFreeDevice(&devices[i]);
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}
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free(devices);
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return fd;
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}
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static bool open_preferred_drm_fd(struct wlr_backend *backend, int *drm_fd_ptr,
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bool *own_drm_fd) {
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if (*drm_fd_ptr >= 0) {
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return true;
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}
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// Allow the user to override the render node
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const char *render_name = getenv("WLR_RENDER_DRM_DEVICE");
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if (render_name != NULL) {
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wlr_log(WLR_INFO,
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"Opening DRM render node '%s' from WLR_RENDER_DRM_DEVICE",
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render_name);
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int drm_fd = open(render_name, O_RDWR | O_CLOEXEC);
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if (drm_fd < 0) {
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wlr_log_errno(WLR_ERROR, "Failed to open '%s'", render_name);
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return false;
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}
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if (drmGetNodeTypeFromFd(drm_fd) != DRM_NODE_RENDER) {
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wlr_log(WLR_ERROR, "'%s' is not a DRM render node", render_name);
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close(drm_fd);
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return false;
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}
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*drm_fd_ptr = drm_fd;
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*own_drm_fd = true;
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return true;
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}
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// Prefer the backend's DRM node, if any
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int backend_drm_fd = wlr_backend_get_drm_fd(backend);
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if (backend_drm_fd >= 0) {
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*drm_fd_ptr = backend_drm_fd;
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*own_drm_fd = false;
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return true;
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}
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// If the backend hasn't picked a DRM FD, but accepts DMA-BUFs, pick an
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// arbitrary render node
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uint32_t backend_caps = backend_get_buffer_caps(backend);
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if (backend_caps & WLR_BUFFER_CAP_DMABUF) {
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int drm_fd = open_drm_render_node();
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if (drm_fd < 0) {
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return false;
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}
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*drm_fd_ptr = drm_fd;
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*own_drm_fd = true;
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return true;
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}
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return false;
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}
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static void log_creation_failure(bool is_auto, const char *msg) {
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wlr_log(is_auto ? WLR_DEBUG : WLR_ERROR, "%s%s", msg, is_auto ? ". Skipping!" : "");
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}
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static bool has_render_node(struct wlr_backend *backend) {
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if (!backend) {
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return false;
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}
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int backend_drm_fd = wlr_backend_get_drm_fd(backend);
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if (backend_drm_fd < 0) {
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return false;
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}
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char *render_node = drmGetRenderDeviceNameFromFd(backend_drm_fd);
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bool has_render_node = render_node != NULL;
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free(render_node);
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return has_render_node;
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}
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static struct wlr_renderer *renderer_autocreate(struct wlr_backend *backend, int drm_fd) {
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const char *renderer_options[] = {
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"auto",
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"gles2",
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"vulkan",
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"pixman",
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NULL
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};
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const char *renderer_name = renderer_options[env_parse_switch("WLR_RENDERER", renderer_options)];
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bool is_auto = strcmp(renderer_name, "auto") == 0;
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struct wlr_renderer *renderer = NULL;
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bool own_drm_fd = false;
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if ((is_auto && WLR_HAS_GLES2_RENDERER) || strcmp(renderer_name, "gles2") == 0) {
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if (!open_preferred_drm_fd(backend, &drm_fd, &own_drm_fd)) {
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log_creation_failure(is_auto, "Cannot create GLES2 renderer: no DRM FD available");
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} else {
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#if WLR_HAS_GLES2_RENDERER
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renderer = wlr_gles2_renderer_create_with_drm_fd(drm_fd);
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#else
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wlr_log(WLR_ERROR, "Cannot create GLES renderer: disabled at compile-time");
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#endif
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if (renderer) {
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goto out;
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} else {
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log_creation_failure(is_auto, "Failed to create a GLES2 renderer");
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}
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}
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}
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if ((is_auto && WLR_HAS_VULKAN_RENDERER) || strcmp(renderer_name, "vulkan") == 0) {
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if (!open_preferred_drm_fd(backend, &drm_fd, &own_drm_fd)) {
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log_creation_failure(is_auto, "Cannot create Vulkan renderer: no DRM FD available");
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} else {
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#if WLR_HAS_VULKAN_RENDERER
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renderer = wlr_vk_renderer_create_with_drm_fd(drm_fd);
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#else
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wlr_log(WLR_ERROR, "Cannot create Vulkan renderer: disabled at compile-time");
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#endif
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if (renderer) {
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goto out;
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} else {
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log_creation_failure(is_auto, "Failed to create a Vulkan renderer");
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}
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}
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}
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if ((is_auto && !has_render_node(backend)) || strcmp(renderer_name, "pixman") == 0) {
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renderer = wlr_pixman_renderer_create();
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if (renderer) {
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goto out;
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} else {
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log_creation_failure(is_auto, "Failed to create a pixman renderer");
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}
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}
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out:
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if (renderer == NULL) {
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wlr_log(WLR_ERROR, "Could not initialize renderer");
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}
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if (own_drm_fd && drm_fd >= 0) {
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close(drm_fd);
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}
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if (renderer != NULL && env_parse_bool("WLR_RENDER_NO_EXPLICIT_SYNC")) {
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renderer->features.timeline = false;
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}
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return renderer;
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}
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struct wlr_renderer *renderer_autocreate_with_drm_fd(int drm_fd) {
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assert(drm_fd >= 0);
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return renderer_autocreate(NULL, drm_fd);
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}
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struct wlr_renderer *wlr_renderer_autocreate(struct wlr_backend *backend) {
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return renderer_autocreate(backend, -1);
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}
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int wlr_renderer_get_drm_fd(struct wlr_renderer *r) {
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if (!r->impl->get_drm_fd) {
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return -1;
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}
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return r->impl->get_drm_fd(r);
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}
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struct wlr_render_pass *wlr_renderer_begin_buffer_pass(struct wlr_renderer *renderer,
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struct wlr_buffer *buffer, const struct wlr_buffer_pass_options *options) {
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struct wlr_buffer_pass_options default_options = {0};
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if (!options) {
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options = &default_options;
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}
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return renderer->impl->begin_buffer_pass(renderer, buffer, options);
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}
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struct wlr_render_timer *wlr_render_timer_create(struct wlr_renderer *renderer) {
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if (!renderer->impl->render_timer_create) {
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return NULL;
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}
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return renderer->impl->render_timer_create(renderer);
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}
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int wlr_render_timer_get_duration_ns(struct wlr_render_timer *timer) {
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if (!timer->impl->get_duration_ns) {
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return -1;
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}
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return timer->impl->get_duration_ns(timer);
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}
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void wlr_render_timer_destroy(struct wlr_render_timer *timer) {
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if (!timer->impl->destroy) {
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return;
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}
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timer->impl->destroy(timer);
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}
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