Method

GskRendererrender

Declaration [src]

void
gsk_renderer_render (
  GskRenderer* renderer,
  GskRenderNode* root,
  const cairo_region_t* region
)

Description [src]

Renders the scene graph, described by a tree of GskRenderNode instances to the renderer’s surface, ensuring that the given region gets redrawn.

If the renderer has no associated surface, this function does nothing.

Renderers must ensure that changes of the contents given by the root node as well as the area given by region are redrawn. They are however free to not redraw any pixel outside of region if they can guarantee that it didn’t change.

The renderer will acquire a reference on the GskRenderNode tree while the rendering is in progress.

Parameters

root

Type: GskRenderNode

The render node to render.

The data is owned by the caller of the method.

region

Type: cairo_region_t

The cairo_region_t that must be redrawn or NULL for the whole surface.

The argument can be NULL.

The data is owned by the caller of the method.