mirrors/wlroots
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/wlroots/wlroots.git synced 2026-02-05 04:06:11 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

Merge branch 'gbm-map' into 'master'

Browse source 
Draft: render/allocator/gbm: implement begin_data_ptr_access

See merge request wlroots/wlroots!4408
This commit is contained in:
Simon Ser 2026-01-22 03:05:26 +00:00
commit 4803a1d1c7
2 changed files with 43 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

1
include/render/allocator/gbm.h
View file

@ -12,6 +12,7 @@ struct wlr_gbm_buffer {
struct wl_list link; // wlr_gbm_allocator.buffers
struct gbm_bo *gbm_bo; // NULL if the gbm_device has been destroyed
void *gbm_map_data; // NULL unless we have an active mapping
struct wlr_dmabuf_attributes dmabuf;
};

42
render/allocator/gbm.c
View file

@ -147,9 +147,51 @@ static bool buffer_get_dmabuf(struct wlr_buffer *wlr_buffer,
return true;
}
static bool gbm_buffer_begin_data_ptr_access(struct wlr_buffer *wlr_buffer,
uint32_t flags, void **data_ptr, uint32_t *format_ptr, size_t *stride_ptr) {
struct wlr_gbm_buffer *buffer = get_gbm_buffer_from_buffer(wlr_buffer);
if (buffer->gbm_bo == NULL) {
return false;
}
uint32_t gbm_flags = 0;
if (flags & WLR_BUFFER_DATA_PTR_ACCESS_READ) {
gbm_flags |= GBM_BO_TRANSFER_READ;
}
if (flags & WLR_BUFFER_DATA_PTR_ACCESS_WRITE) {
gbm_flags |= GBM_BO_TRANSFER_WRITE;
}
uint32_t stride = 0;
void *gbm_map_data = NULL;
void *data = gbm_bo_map(buffer->gbm_bo, 0, 0,
wlr_buffer->width, wlr_buffer->height, gbm_flags, &stride, &gbm_map_data);
if (data == NULL) {
wlr_log_errno(WLR_ERROR, "gbm_bo_map failed");
return false;
}
*data_ptr = data;
*format_ptr = buffer->dmabuf.format;
*stride_ptr = stride;
assert(buffer->gbm_map_data == NULL);
buffer->gbm_map_data = gbm_map_data;
return true;
}
static void gbm_buffer_end_data_ptr_access(struct wlr_buffer *wlr_buffer) {
struct wlr_gbm_buffer *buffer = get_gbm_buffer_from_buffer(wlr_buffer);
assert(buffer->gbm_bo != NULL);
gbm_bo_unmap(buffer->gbm_bo, buffer->gbm_map_data);
buffer->gbm_map_data = NULL;
}
static const struct wlr_buffer_impl buffer_impl = {
.destroy = buffer_destroy,
.get_dmabuf = buffer_get_dmabuf,
.begin_data_ptr_access = gbm_buffer_begin_data_ptr_access,
.end_data_ptr_access = gbm_buffer_end_data_ptr_access,
};
static const struct wlr_allocator_interface allocator_impl;