diff options
Diffstat (limited to 'src/gallium/winsys/drm/radeon/core/radeon_buffer.c')
-rw-r--r-- | src/gallium/winsys/drm/radeon/core/radeon_buffer.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/src/gallium/winsys/drm/radeon/core/radeon_buffer.c b/src/gallium/winsys/drm/radeon/core/radeon_buffer.c index e5c6919933..daa032af6f 100644 --- a/src/gallium/winsys/drm/radeon/core/radeon_buffer.c +++ b/src/gallium/winsys/drm/radeon/core/radeon_buffer.c @@ -264,6 +264,75 @@ static int radeon_fence_finish(struct pipe_winsys *ws, return 0; } +/* Create a buffer from a handle. */ +static struct pipe_buffer* radeon_buffer_from_handle(struct radeon_winsys *radeon_ws, + struct pipe_screen *screen, + struct winsys_handle *whandle, + unsigned *stride) +{ + struct radeon_bo_manager* bom = radeon_ws->priv->bom; + struct radeon_pipe_buffer* radeon_buffer; + struct radeon_bo* bo = NULL; + + bo = radeon_bo_open(bom, whandle->handle, 0, 0, 0, 0); + if (bo == NULL) { + return NULL; + } + + radeon_buffer = CALLOC_STRUCT(radeon_pipe_buffer); + if (radeon_buffer == NULL) { + radeon_bo_unref(bo); + return NULL; + } + + pipe_reference_init(&radeon_buffer->base.reference, 1); + radeon_buffer->base.screen = screen; + radeon_buffer->base.usage = PIPE_BUFFER_USAGE_PIXEL; + radeon_buffer->bo = bo; + + *stride = whandle->stride; + + return &radeon_buffer->base; +} + +static boolean radeon_buffer_get_handle(struct radeon_winsys *radeon_ws, + struct pipe_buffer *buffer, + unsigned stride, + struct winsys_handle *whandle) +{ + int retval, fd; + struct drm_gem_flink flink; + struct radeon_pipe_buffer* radeon_buffer; + + radeon_buffer = (struct radeon_pipe_buffer*)buffer; + + + if (whandle->type == DRM_API_HANDLE_TYPE_SHARED) { + if (!radeon_buffer->flinked) { + fd = radeon_ws->priv->fd; + + flink.handle = radeon_buffer->bo->handle; + + retval = ioctl(fd, DRM_IOCTL_GEM_FLINK, &flink); + if (retval) { + debug_printf("radeon: DRM_IOCTL_GEM_FLINK failed, error %d\n", + retval); + return FALSE; + } + + radeon_buffer->flink = flink.name; + radeon_buffer->flinked = TRUE; + } + + whandle->handle = radeon_buffer->flink; + } else if (whandle->type == DRM_API_HANDLE_TYPE_KMS) { + whandle->handle = ((struct radeon_pipe_buffer*)buffer)->bo->handle; + } + whandle->stride = stride; + + return TRUE; +} + struct radeon_winsys* radeon_pipe_winsys(int fd) { struct radeon_winsys* radeon_ws; @@ -298,6 +367,8 @@ struct radeon_winsys* radeon_pipe_winsys(int fd) radeon_ws->base.get_name = radeon_get_name; radeon_ws->buffer_set_tiling = radeon_buffer_set_tiling; + radeon_ws->buffer_from_handle = radeon_buffer_from_handle; + radeon_ws->buffer_get_handle = radeon_buffer_get_handle; return radeon_ws; } |