Instead of having special code in the velocity tracker to deal with axis
locking and cancel out the position delta, we can apply axis locking
when we transition from the pan to the fling and simply cancel the
velocity on locked axes. This avoids the problem where we start a fling
from an axis lock but velocity information from prior to the axis lock
is used to compute the (perhaps unexpected) fling trajectory.
Differential Revision: https://phabricator.services.mozilla.com/D24060
--HG--
extra : moz-landing-system : lando
If we try to send them separately as we were before, we can run into
cases where we try to destroy the actors and then send the OpRemoveTexture,
which crashes.
Differential Revision: https://phabricator.services.mozilla.com/D23987
--HG--
extra : moz-landing-system : lando
As discussed in IRC. AFAICT the ORTHO_NEAR|FAR_PLANE should match
up with the ranges of valid ZBufferIds, but please double-check
me.
Differential Revision: https://phabricator.services.mozilla.com/D23599
--HG--
extra : moz-landing-system : lando
This corrects A) An issue encountered with our strategy for skipping
the end_pass call for all but an offscreen render target. See the
comment above the end_pass call for details, and B) An issue with
depth clearing where we do not clear the whole rect if there are
multiple non-intersecting documents.
Differential Revision: https://phabricator.services.mozilla.com/D23056
--HG--
extra : moz-landing-system : lando
Just a little rename for clarity - I ended up scratching my head at
something for a little more time than I should have because I assumed
this was synchronous without looking at the implementation.
Differential Revision: https://phabricator.services.mozilla.com/D21584
--HG--
extra : moz-landing-system : lando
This is a large patch that contains all of the core changes for
renderroot splitting.
Differential Revision: https://phabricator.services.mozilla.com/D20701
--HG--
extra : moz-landing-system : lando
A possible alternative would be to have the main thread already paint a
displayport at the target position of a requested visual update as part of
the same transaction that requests the update.
There are a couple of reasons we may not want to do that:
1) APZ could reject the requested visual update under certain conditions,
e.g. if there is a higher-priority layout update.
2) It would break the property that the displayport in the main thread's
scroll metadata is relative to the scroll offset in said metadata.
Various places assume this and untangling that seems tricky.
This does mean that if the main thread requests a visual update to "far away"
(outside the existing displayport), we can get temporary checkerboarding
before the content at the target position is painted. However, it's
straightforward for callers to work around that, by changing the layout scroll
offset _and_ scheduling a visual update if they wish to visual-scroll far
away.
Differential Revision: https://phabricator.services.mozilla.com/D23902
--HG--
extra : moz-landing-system : lando
This patch shouldn't have any functional effect. It's motivated by
some changes needed to implement clip masks in pixel local storage,
but these are also general improvements that stand alone. Specifically:
- Remove clip_task_index from the global PrimitiveHeader struct.
In most cases, the clip task is supplied in the BrushInstance
structure, so it makes no sense to have this as a common field,
where it is generally unused. Instead, there is now an extra
'user data' field available in the PrimitiveHeader. Non-brush
shaders (text_run and split_composite) use that extra field to
store the clip task address, while the brush shaders gain an extra
(currently unused) user data field.
- In turn, this means there is no need to unconditionally try
and retrieve the first clip task address for a primitive
during batching. This was previously used to initialize the
PrimitiveHeader structure.
Differential Revision: https://phabricator.services.mozilla.com/D24312
--HG--
extra : moz-landing-system : lando
The definitions can't be entirely removed yet because NSS still needs them.
Differential Revision: https://phabricator.services.mozilla.com/D23454
--HG--
extra : moz-landing-system : lando
While we're here, fix the measurement of ' ' and 'x' so that we don't
measure the .notdef glyph if those glyphs aren't present.
Differential Revision: https://phabricator.services.mozilla.com/D23423
--HG--
extra : moz-landing-system : lando
Add an experimental code path that makes use of the pixel local
storage extension available on many mobile GPUs.
This code path is currently disabled by default, as the support
is not complete for all primitives and blend modes. The initial
aim is to get feature parity with the existing renderer.
Once that's complete, we can take advantage of the (minimum)
12 bytes per pixel of high speed on-tile memory to store custom
data.
Clip masks are a good use case for this, since they map 1:1 with
the position of the fragment they are clipping. Using this for
clip masks allows us to handle clipping on mobile GPUs in a much
more efficient way - we can skip (a) separate render targets,
(b) target resolve (c) sample the mask texture during rendering.
Depends on D24123
Differential Revision: https://phabricator.services.mozilla.com/D24124
--HG--
extra : moz-landing-system : lando
RenderCompositorEGL is also used on wayland, but SharedGL is not enabled on wayalnd. Since SharedGL caused flickering, when multiple windows were opened on wayland.
Differential Revision: https://phabricator.services.mozilla.com/D23786
--HG--
extra : moz-landing-system : lando
`gecko_profiler_add_text_marker` was being passed a character pointer and a
length to construct a `nsDependentCString`. However, these values were coming
from a Rust `&str`, which is not null-terminated, causing an debug assertion to
be hit (and possible memory safety issues if mishandle the string). We now
construct an `nsDependentCSubstring` instead.
Differential Revision: https://phabricator.services.mozilla.com/D24032
--HG--
extra : moz-landing-system : lando
Most rounded rect clips in real content are (a) axis aligned and
(b) have uniform radii.
When these conditions are met, we can run a fast path for clip
mask generation that uses significantly fewer ALU shader ops.
This is not typically a bottleneck on desktop GPUs, but can have
a large performance impact on mobile GPUs (and perhaps low end
integrated GPUs).
The Mali shader analyzer reports the slow path for the rounded
rect clip shader to be 94 cycles per fragment, while the fast
path is 10 cycles.
Differential Revision: https://phabricator.services.mozilla.com/D23817
--HG--
extra : moz-landing-system : lando
The upcoming WebXR API (Bug 1419190) requires intermediate calculations of real-world space coordinates to have more precision with larger ranges. I expect that double precision matrix and quaternions will also be useful in other graphics and layout work.
It would not be ideal to expand the existing classes to always use double precision, as it would incur a significant performance penalty on certain platforms (eg, Arm). The double-precision variants should be used only when required.
The existing gfx::Matrix4x4 and gfx::Quaternion implementation can be extended with templates to generate both single and double precision variants.
Differential Revision: https://phabricator.services.mozilla.com/D22010
--HG--
extra : moz-landing-system : lando
We haven't seen any AMD related bugs on Nightly so I'd like to expand
our scope further.
Differential Revision: https://phabricator.services.mozilla.com/D23944
--HG--
extra : moz-landing-system : lando
In GLES 3 GLSL, the default precision for ints is highp (32 bit) in
vertex shaders, but only mediump (16 bit) in fragment shaders.
To render linear and radial gradients the fragment shader must fetch
the gradient stops from the gpu cache, using an address variable. This
variable is a 16 bit int, so if the stops data is located at
too high an address (row 32 or greater) then this value will have
overflown and we fetch from the wrong location. This was resulting in
garbage being drawn instead of the correct gradients.
To fix this, any address used in a fragment shader must be marked as
highp. This includes the varying input which supplies the address, and
the arguments to any functions used for the fetch.
Differential Revision: https://phabricator.services.mozilla.com/D23669
--HG--
extra : moz-landing-system : lando
We haven't seen any AMD related bugs on Nightly so I'd like to expand
our scope further.
Differential Revision: https://phabricator.services.mozilla.com/D23944
--HG--
extra : moz-landing-system : lando
Doug Thayer
Lee Salzman
Kartikaya Gupta
Gijs Kruitbosch
Ciure Andrei
Mike Hommey
Botond Ballo
Glenn Watson
Nicholas Nethercote
Timothy Nikkel
Imanol Fernandez
Miko Mynttinen
Jonathan Kew
Cameron McCormack
Boris Zbarsky
Barret Rennie
sotaro
Dzmitry Malyshau
Emilio Cobos Álvarez
Bobby Holley
Kearwood "Kip" Gilbert
Jeff Muizelaar
Alex Gaynor
Henri Sivonen
Daniel Varga
Bogdan Tara
Gurzau Raul
Jeff Gilbert
Alexis Beingessner
Jamie Nicol
Coroiu Cristina