Commit Graph

1216 Commits

Author SHA1 Message Date
Emmanuele Bassi
2ded2ad6b7 gsk: Add ShaderBuilder
GskShaderBuilder is an ancillary, private type that deals with the
internals of taking GLSL shaders from resources and building them,
with the additional feature of being able to compose shaders from a
common preamble, as well as adding conditional defines (useful for
enabling debugging code in the shaders themselves).
2016-10-18 11:49:07 +01:00
Emmanuele Bassi
3d21c4afba gsk: Add rendering debug mode for shaders
It's going to be useful to inject debugging data into the shaders used
by GSK.
2016-10-18 11:49:07 +01:00
Emmanuele Bassi
1b1edcebd0 gsk: Use the node's blend mode in the GL renderer 2016-10-18 11:49:07 +01:00
Emmanuele Bassi
81e992e1ff gsk: Store blend mode in the render node 2016-10-18 11:49:07 +01:00
Emmanuele Bassi
bf09ce93c8 gsk: Make GskBlendMode enumeration public 2016-10-18 11:49:07 +01:00
Emmanuele Bassi
638297a22e gsk: Allow sampling between parent and child nodes 2016-10-18 11:49:07 +01:00
Emmanuele Bassi
7416aa762f gsk: Group render state attributes 2016-10-18 11:49:06 +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
d99f91f5fd gsk: Flush the GL render items cache
Whenever the render tree changes we want to drop the RenderItem arrays,
as each item contains a pointer to the GskRenderNode which becomes
dangling once the root node changed.
2016-10-18 11:29:34 +01:00
Emmanuele Bassi
635fd7026a gsk: Add GskRenderer::clear_tree
We need a way to clear eventual caches inside GskRenderer subclasses if
the root node has changed.
2016-10-18 11:29:34 +01:00
Emmanuele Bassi
9d3ca22b4c gsk: Port GskGLRenderer to GLES
Use the appropriate API and shaders if the GdkGLContext was created for
OpenGL ES instead of OpenGL.
2016-10-18 11:29:34 +01:00
Emmanuele Bassi
5909ce6897 gsk: Use surface-to-texture utility function
Now that we have it.
2016-10-18 11:29:34 +01:00
Emmanuele Bassi
eb9c0920ab gsk: Rename shaders for OpenGL 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
Emmanuele Bassi
d519e4aafe gsk: Initial commit / build environment 2016-10-18 11:29:34 +01:00