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The native WebGL context is tied to a single canvas,
and can only be used with that canvas. (Qt creates
one canvas per QPlatformWindow).
This means that we need new native contexts in cases
where a QWindow is repeatedly created and destroyed.
It can be tempting to just create a new WebGL context
"behind the scenes" on the makeCurrent() call in this
case, but this does not work since GL resources created
by user code with the original WebGL context in place
are now invalid.
Inform user code that this has happened by signaling
a context loss. This is done by returning false from
makeCurrent(), and then making sure isValid() returns
false as well.
The context becomes invalid whenever the owning platform
window is destroyed; add a call from ~QWasmWindow() which
handles that bookkeeping.
Pick-to: 6.10
Task-number: QTBUG-120138
Change-Id: I929b9bb51153007c16630b1a991399f01ebffa62
Reviewed-by: Morten Johan Sørvig <[email protected]>
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All major browsers support webgl2 out of the box.
[ChangeLog][WebAssmebly] Default OpenGL ES version raised to 3.0
Fixes: QTBUG-110686
Pick-to: 6.7
Change-Id: I875b55c2e0f6e955249f121d92214cf10ed416d7
Reviewed-by: Morten Johan Sørvig <[email protected]>
Reviewed-by: Laszlo Agocs <[email protected]>
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Pick-to: 6.5
Task-number: QTBUG-109394
Change-Id: I6a46784fa65aecd48a7f59021c4942ed52321742
Reviewed-by: Alexandru Croitor <[email protected]>
Reviewed-by: Alexey Edelev <[email protected]>
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Due to the nature of WebGL contexts, which cannot be reassigned to
targets other than they were created for, we will now reuse the created
canvas context for offscreen surfaces, since those (hopefully) mostly
operate on textures anyway. If this is not done, any switch to an
offscreen surface for the main RHI context invalidates resources on
contexts in a share group with it.
Fixes: QTBUG-111617
Change-Id: I9752f7eec396a3ef11414881f5f79f26e1e2c859
Reviewed-by: Morten Johan Sørvig <[email protected]>
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Since context sharing is not currently supported with WebGL, offscreen
contexts have a limited usability on Qt for WASM.
If a context is shared, use the same underlaying WebGL context so that
the two can actually share resources. This is not full-blown context
sharing by any means but it makes e.g. the Open GL widget work as the
readback texture for it is 'shared' between the virtual Qt contexts.
If no sharing is desired, we use an OffscreenCanvas and actually create
a separate WebGL context.
Fixes: QTBUG-107558
Pick-to: 6.5
Change-Id: If57e44739ddb57c167d5f8881a74d8dee52531f6
Reviewed-by: Mikołaj Boc <[email protected]>
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Make the browser compositor draw the window non-client area (using css
+ html). Get rid of OpenGL usage in non-OpenGL windows and use canvas
2d context instead to blit the texture (QImage).
Also, as part of the change, remove the deprecated canvas element support
in QScreen.
Fixes: QTBUG-107116
Fixes: QTBUG-107219
Change-Id: I65f0d91831c806315685ca681ac0e416673f5cd5
Reviewed-by: Morten Johan Sørvig <[email protected]>
Reviewed-by: Aleksandr Reviakin <[email protected]>
Reviewed-by: David Skoland <[email protected]>
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Replace the current license disclaimer in files by
a SPDX-License-Identifier.
Files that have to be modified by hand are modified.
License files are organized under LICENSES directory.
Task-number: QTBUG-67283
Change-Id: Id880c92784c40f3bbde861c0d93f58151c18b9f1
Reviewed-by: Qt CI Bot <[email protected]>
Reviewed-by: Lars Knoll <[email protected]>
Reviewed-by: Jörg Bornemann <[email protected]>
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QtQuick3D probes for the supported OpenGL level by testing
multiple OpenGL versions in descending order. Context creation
must fail for versions not supported by WebGL. It does not
appear that Emscripten does this for the 3.x minor versions,
at least.
Add version check which allows OpenGL (ES) 3.0 and 2.0.
Change-Id: Ide8745dd79e69af86812a8d6f5d6cc16ecdd099a
Reviewed-by: Lorn Potter <[email protected]>
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We don’t need the contextLost callback since we can
poll for the “lost” status in isValid()
Recreating the native context is not very helpful,
since it destroys all current context state. Remove
this logic.
Support makeCurrent() on different surfaces, as long
as they refer to the same screen. Create the native
context (and record which screen) on the first call
to makeCurrent()
Task-number: QTBUG-75463
Change-Id: I6eb830df14578ffdbed5b0505fe860ce433e4f9b
Reviewed-by: Lorn Potter <[email protected]>
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This allows for multi canvas use
Task-number: QTBUG-64079
Change-Id: I69c998aa4c2869bb5b7f14ba65bb63284365ad70
Reviewed-by: Morten Johan Sørvig <[email protected]>
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This is the squashed diff from wip/webassembly to dev.
Done-with: Peng Wu <[email protected]>
Done-with: Sami Enne <[email protected]>
Done-with: Morten Johan Sørvig <[email protected]>
Started-by: Andrew Knight <[email protected]>
Change-Id: I6562433c0a38d6ec49ab675e0f104f2665f3392d
Reviewed-by: Lorn Potter <[email protected]>
Reviewed-by: Eskil Abrahamsen Blomfeldt <[email protected]>
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