Commit Graph

104 Commits

Author SHA1 Message Date
Emmanuele Bassi
638297a22e gsk: Allow sampling between parent and child nodes 2016-10-18 11:49:07 +01:00
Emmanuele Bassi
b8a92dfa0e gsk: Turn GskRenderNode into a pure GTypeInstance
Using GObject as the base type for a transient tree may prove to be too
intensive, especially when creating a lot of node instances. Since we
don't need properties or signals, and we don't need complex destruction
semantics, we can use GTypeInstance directly as the base type for
GskRenderNode.
2016-10-18 11:49:06 +01:00
Emmanuele Bassi
074c77e7ac gsk: Rework GskRenderer and GskRenderNode semantics
This commit changes the way GskRenderer and GskRenderNode interact and
are meant to be used.

GskRenderNode should represent a transient tree of rendering nodes,
which are submitted to the GskRenderer at render time; this allows the
renderer to take ownership of the render tree. Once the toolkit and
application code have finished assembling it, the render tree ownership
is transferred to the renderer.
2016-10-18 11:29:34 +01:00
Emmanuele Bassi
7afdd3fdb5 Initial implementation of GSK rendering pipeline
GSK is conceptually split into two scene graphs:

 * a simple rendering tree of operations
 * a complex set of logical layers

The latter is built on the former, and adds convenience and high level
API for application developers.

The lower layer, though, is what gets transformed into the rendering
pipeline, as it's simple and thus can be transformed into appropriate
rendering commands with minimal state changes.

The lower layer is also suitable for reuse from more complex higher
layers, like the CSS machinery in GTK, without necessarily port those
layers to the GSK high level API.

This lower layer is based on GskRenderNode instances, which represent
the tree of rendering operations; and a GskRenderer instance, which
takes the render nodes and submits them (after potentially reordering
and transforming them to a more appropriate representation) to the
underlying graphic system.
2016-10-18 11:29:34 +01:00