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render/vulkan: prefer render node for wlr_renderer_get_drm_fd()

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Instead of returning a primary node from wlr_renderer_get_drm_fd(),
prefer to return a render node if any.
This commit is contained in:
Simon Ser 2023-02-27 16:49:43 +01:00 committed by Simon Zeni
parent 8db0d82890
commit 40117e1e0d
3 changed files with 54 additions and 3 deletions
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1
include/render/vulkan.h
View file

@ -66,6 +66,7 @@ struct wlr_vk_device {
// Tries to find the VkPhysicalDevice for the given drm fd.
// Might find none and return VK_NULL_HANDLE.
VkPhysicalDevice vulkan_find_drm_phdev(struct wlr_vk_instance *ini, int drm_fd);
int vulkan_open_phdev_drm_fd(VkPhysicalDevice phdev);
// Creates a device for the given instance and physical device.
struct wlr_vk_device *vulkan_device_create(struct wlr_vk_instance *ini,

6
render/vulkan/renderer.c
View file

@ -2240,10 +2240,10 @@ struct wlr_renderer *wlr_vk_renderer_create_with_drm_fd(int drm_fd) {
return NULL;
}
// We duplicate it so it's not closed while we still need it.
dev->drm_fd = fcntl(drm_fd, F_DUPFD_CLOEXEC, 0);
// Do not use the drm_fd that was passed in: we should prefer the render
// node even if a primary node was provided
dev->drm_fd = vulkan_open_phdev_drm_fd(phdev);
if (dev->drm_fd < 0) {
wlr_log_errno(WLR_ERROR, "fcntl(F_DUPFD_CLOEXEC) failed");
vulkan_device_destroy(dev);
vulkan_instance_destroy(ini);
return NULL;

50
render/vulkan/vulkan.c
View file

@ -1,4 +1,8 @@
#if !defined(__FreeBSD__)
#define _POSIX_C_SOURCE 200809L
#endif
#include <assert.h>
#include <fcntl.h>
#include <math.h>
#include <stdlib.h>
#include <stdint.h>
@ -366,6 +370,52 @@ VkPhysicalDevice vulkan_find_drm_phdev(struct wlr_vk_instance *ini, int drm_fd)
return VK_NULL_HANDLE;
}
int vulkan_open_phdev_drm_fd(VkPhysicalDevice phdev) {
// vulkan_find_drm_phdev() already checks that VK_EXT_physical_device_drm
// is supported
VkPhysicalDeviceDrmPropertiesEXT drm_props = {
.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_DRM_PROPERTIES_EXT,
};
VkPhysicalDeviceProperties2 props = {
.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROPERTIES_2,
.pNext = &drm_props,
};
vkGetPhysicalDeviceProperties2(phdev, &props);
dev_t devid;
if (drm_props.hasRender) {
devid = makedev(drm_props.renderMajor, drm_props.renderMinor);
} else if (drm_props.hasPrimary) {
devid = makedev(drm_props.primaryMajor, drm_props.primaryMinor);
} else {
wlr_log(WLR_ERROR, "Physical device is missing both render and primary nodes");
return -1;
}
drmDevice *device = NULL;
if (drmGetDeviceFromDevId(devid, 0, &device) != 0) {
wlr_log_errno(WLR_ERROR, "drmGetDeviceFromDevId failed");
return -1;
}
const char *name = NULL;
if (device->available_nodes & (1 << DRM_NODE_RENDER)) {
name = device->nodes[DRM_NODE_RENDER];
} else {
assert(device->available_nodes & (1 << DRM_NODE_PRIMARY));
name = device->nodes[DRM_NODE_PRIMARY];
wlr_log(WLR_DEBUG, "DRM device %s has no render node, "
"falling back to primary node", name);
}
int drm_fd = open(name, O_RDWR | O_NONBLOCK | O_CLOEXEC);
if (drm_fd < 0) {
wlr_log_errno(WLR_ERROR, "Failed to open DRM node %s", name);
}
drmFreeDevice(&device);
return drm_fd;
}
static void load_device_proc(struct wlr_vk_device *dev, const char *name,
void *proc_ptr) {
void *proc = (void *)vkGetDeviceProcAddr(dev->dev, name);