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allocator/drm_dumb: use libdrm dumb buffer helpers

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References: https://gitlab.freedesktop.org/mesa/drm/-/merge_requests/272
This commit is contained in:
Simon Ser 2022-11-03 09:46:58 +01:00
parent 8b12037cad
commit fdb24d19ca
2 changed files with 11 additions and 23 deletions
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2
meson.build
View file

@ -107,7 +107,7 @@ wayland_server = dependency('wayland-server',
) )
drm = dependency('libdrm', drm = dependency('libdrm',
version: '>=2.4.113', version: '>=2.4.114',
fallback: 'libdrm', fallback: 'libdrm',
default_options: [ default_options: [
'intel=disabled', 'intel=disabled',

32
render/allocator/drm_dumb.c
View file

@ -55,41 +55,30 @@ static struct wlr_drm_dumb_buffer *create_buffer(
buffer->drm_fd = alloc->drm_fd; buffer->drm_fd = alloc->drm_fd;
struct drm_mode_create_dumb create = {0}; if (drmModeCreateDumbBuffer(alloc->drm_fd, width, height, info->bpp, 0,
create.width = (uint32_t)width; &buffer->handle, &buffer->stride, &buffer->size) != 0) {
create.height = (uint32_t)height;
create.bpp = info->bpp;
if (drmIoctl(alloc->drm_fd, DRM_IOCTL_MODE_CREATE_DUMB, &create) != 0) {
wlr_log_errno(WLR_ERROR, "Failed to create DRM dumb buffer"); wlr_log_errno(WLR_ERROR, "Failed to create DRM dumb buffer");
goto create_destroy; goto create_destroy;
} }
buffer->width = create.width; buffer->width = width;
buffer->height = create.height; buffer->height = height;
buffer->stride = create.pitch;
buffer->handle = create.handle;
buffer->format = format->format; buffer->format = format->format;
struct drm_mode_map_dumb map = {0}; uint64_t offset;
map.handle = buffer->handle; if (drmModeMapDumbBuffer(alloc->drm_fd, buffer->handle, &offset) != 0) {
if (drmIoctl(alloc->drm_fd, DRM_IOCTL_MODE_MAP_DUMB, &map) != 0) {
wlr_log_errno(WLR_ERROR, "Failed to map DRM dumb buffer"); wlr_log_errno(WLR_ERROR, "Failed to map DRM dumb buffer");
goto create_destroy; goto create_destroy;
} }
buffer->data = mmap(NULL, create.size, PROT_READ | PROT_WRITE, MAP_SHARED, buffer->data = mmap(NULL, buffer->size, PROT_READ | PROT_WRITE, MAP_SHARED,
alloc->drm_fd, map.offset); alloc->drm_fd, offset);
if (buffer->data == MAP_FAILED) { if (buffer->data == MAP_FAILED) {
wlr_log_errno(WLR_ERROR, "Failed to mmap DRM dumb buffer"); wlr_log_errno(WLR_ERROR, "Failed to mmap DRM dumb buffer");
goto create_destroy; goto create_destroy;
} }
buffer->size = create.size; memset(buffer->data, 0, buffer->size);
memset(buffer->data, 0, create.size);
int prime_fd; int prime_fd;
if (drmPrimeHandleToFD(alloc->drm_fd, buffer->handle, DRM_CLOEXEC, if (drmPrimeHandleToFD(alloc->drm_fd, buffer->handle, DRM_CLOEXEC,
@ -149,8 +138,7 @@ static void buffer_destroy(struct wlr_buffer *wlr_buffer) {
wlr_dmabuf_attributes_finish(&buf->dmabuf); wlr_dmabuf_attributes_finish(&buf->dmabuf);
if (buf->drm_fd >= 0) { if (buf->drm_fd >= 0) {
struct drm_mode_destroy_dumb destroy = { .handle = buf->handle }; if (drmModeDestroyDumbBuffer(buf->drm_fd, buf->handle) != 0) {
if (drmIoctl(buf->drm_fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy)) {
wlr_log_errno(WLR_ERROR, "Failed to destroy DRM dumb buffer"); wlr_log_errno(WLR_ERROR, "Failed to destroy DRM dumb buffer");
} }
} }