Commit Graph

7 Commits

Author SHA1 Message Date
Matthias Clasen
7a493f151d Revert "gsk: Respect max element vertices limitation"
This reverts commit f58fc6b22e.
2021-06-28 14:50:58 -04:00
Matthias Clasen
f58fc6b22e gsk: Respect max element vertices limitation
We are pretty good at batching commands now, and we can easily
produce batches that exceed the maximum number of elements per
draw call that the hw can handle. Query that number, and respect
it when merging batches.

This fixes the rendering of the overview map in GtkSourceView.
2021-06-18 06:50:59 -07:00
Matthias Clasen
2d266d107b gsk: Clean up docs syntax
Replace leftover gtk-doc syntax (#Type) with backquotes.
2021-05-22 17:25:26 -04:00
Matthias Clasen
bfe4aea981 ngl: Add a program change counter
Count how often we change programs during a frame.
2021-04-09 00:52:18 -04:00
Christian Hergert
f8a6a09896 ngl: move uniform key mapping into uniform state
Previously, we translated the uniform key (an enum) into a location within
the shader program in GskNglProgram. A number of performance improvements
were focused around having low nubers for the uniform locations. Generally
this is the case, but some drivers such as old Intel drivers on Windows
may use rather large numbers for those.

To combat this, we can push the translation of uniform keys into locations
at the GskNglUniformState level so that we work with unranslated keys
through the process until applying them.

Fixes #3780
2021-03-23 13:44:26 -07:00
Matthias Clasen
2e69273922 ngl: Remove an unused field
We are ignoring the debug nodes, so the
debug_groups string chunk is unused.
2021-03-21 16:05:10 -04:00
Christian Hergert
2a38cecd33 gsk: add OpenGL based GskNglRenderer
The primary goal here was to cleanup the current GL renderer to make
maintenance easier going forward. Furthermore, it tracks state to allow
us to implement more advanced renderer features going forward.

Reordering

This renderer will reorder batches by render target to reduce the number
of times render targets are changed.

In the future, we could also reorder by program within the render target
if we can determine that vertices do not overlap.

Uniform Snapshots

To allow for reordering of batches all uniforms need to be tracked for
the programs. This allows us to create the full uniform state when the
batch has been moved into a new position.

Some care was taken as it can be performance sensitive.

Attachment Snapshots

Similar to uniform snapshots, we need to know all of the texture
attachments so that we can rebind them when necessary.

Render Jobs

To help isolate the process of creating GL commands from the renderer
abstraction a render job abstraction was added. This could be extended
in the future if we decided to do tiling.

Command Queue

Render jobs create batches using the command queue. The command queue
will snapshot uniform and attachment state so that it can reorder
batches right before executing them.

Currently, the only reordering done is to ensure that we only visit
each render target once. We could extend this by tracking vertices,
attachments, and others.

This code currently uses an inline array helper to reduce overhead
from GArray which was showing up on profiles. It could be changed to
use GdkArray without too much work, but had roughly double the
instructions. Cycle counts have not yet been determined.

GLSL Programs

This was simplified to use XMACROS so that we can just extend one file
(gskglprograms.defs) instead of multiple places. The programs are added
as fields in the driver for easy access.

Driver

The driver manages textures, render targets, access to atlases,
programs, and more. There is one driver per display, by using the
shared GL context.

Some work could be done here to batch uploads so that we make fewer
calls to upload when sending icon theme data to the GPU. We'd need
to keep a copy of the atlas data for such purposes.
2021-02-23 14:41:52 -08:00