glFinish depends on package gl which is about to require a function
pointer loader. eglWaitClient is in the EGL API and always available.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
Before this change, the two renderers both had special case code for
approximating strokes they don't support natively. This change moves
that conversion to clip.Op.Add, for several reasons:
- The compute renderer no longer need fallback logic and caches for
strokes it doesn't support.
- The approximation logic is slow. Moving it to clip.Op.Add will not
speed it up, but will make the cost easier to spot in profiles. Until all
strokes are supported natively, users can use macros to cache
expensive strokes.
- Reduced garbage: Op.Add takes an op.Ops anyway, and can use that for
storing the approximated stroke outline.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
To avoid an import cycle in a future change, internal/stroke can no
longer import op/clip. Move required op/clip functionality to
internal/stroke and duplicate the remaining types.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
Complex strokes are not yet supported in either of the current renderers,
so they are converted to filled outlines in package gpu.
We're about to move that complexity up to the op/clip package, so we're
going to need the converter available from outside package gpu. This
change extracts the conversion code and related types to the separate,
internal package stroke.
No functional changes; a follow-up moves the stroke conversion.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
The fill mode is now controlled by a SetFillMode command, not by flags
on each path segment and fill command.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
There was a special case for optional symbols for macOS/iOS. It turns out
dlsym(3) works as expected, so this change deletes the special case.
The change is required to make Gio work with ANGLE, which emulates
OpenGL ES on top of Metal.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
Since clip.Path now encodes paths in the format expected by
elements.comp, use that data directly instead of a roundtrip through
drawOps.buildVerts.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
We're about to let clip.Path use more of the compute renderer features
(lines, cubic béziers). This change prepares the gpu package for reading
one of several commands types, not just the quadratic béziers of before.
The old Quad type is still the basis for the stroking algorithms, but
this change moves it into package gpu which is the only user.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
We're about to encode clip.Paths with the format compatible with the
compute renderer. This change extracts the encoding to a re-usable
package.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
The check for path segments in gpu is redundant; clip.Op.Add doesn't add
the Path op if there were no segments.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
All functions left in the old package unsafe were provided byte slice
views of other types. Rename the package accordingly and avoid a name
clash with the standard library package unsafe.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
The convert program is only used by the shaders from package gpu, and
we're about to make the backend package imported by the program internal
to package gpu. Move the converter below package gpu.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
We're about the merge the Direct3D backend into package gpu. Extract the
raw Direct3D API to its own package, just like package glimpl.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
Use dxc (DirectXShaderCompiler) for compiling, which is newer than fxc
and doesn't not fail compilation with dynamically uniform flows with
barriers.
Currently requires -directcompute to enable generating the shaders.
Signed-off-by: Egon Elbre <egonelbre@gmail.com>
Broken by gioui.org/commit/2dce8a0155ae192f54f74747d660b9f311e9e364,
found while debugging the dormant OpenGL backend for Windows.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
Gio UI may be overlaid on top of custom graphics such as in the glfw example.
That will only work if Gio doesn't clear the screen (to white).
Signed-off-by: Elias Naur <mail@eliasnaur.com>
The target of FocusOp is too subtle; be explicit instead and remove
any doubt.
Multiple SoftKeyboardOp in a single frame is rare, but if they do occur,
they should behave as if they were from separate frames: the last one
applies.
As a side-effect the key event router can be much simplified.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
The glTexStorage2D is part of OpenGL ES 3, but wasn't its function
pointer wasn't initialized on iOS.
Fixes a crash on startup on iOS devices and simulators.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
It turns out restoring all operation state from the moment Defer
is executed is too much; for example, a right-click pop-up needs
the transformation, but not the current clip.
Change Defer to only restore the transformation, and reset all
other state.
Other combinations may be needed in future; we'll deal with them then,
possibly by exposing the load state mask.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
Egon Elbre convinced me commit 01d5e72291 was incorrect, because
in the NRGBA colorspace the alpha value is linear, not gamma adjusted.
Updates gio#192
Signed-off-by: Elias Naur <mail@eliasnaur.com>
Tweak a test color to avoid an off-by-1 rounding error after changing
the conversion formula.
Fixes gio#192
Signed-off-by: Elias Naur <mail@eliasnaur.com>
The semantics were relaxed in a previous commit; this change renames
to operations accordingly.
API change. Use gofmt to adjust your code accordingly:
gofmt -r 'op.Push(a).Pop() -> op.Save(a).Load()'
gofmt -r 'op.Push(a) -> op.Save(a)'
gofmt -r 'v.Pop() -> v.Load()'
gofmt -r 'op.StackOp -> op.StateOp'
Signed-off-by: Elias Naur <mail@eliasnaur.com>
Push/Pop only allows saving and restoring operation state in a
stack-like manner. We're going to need restoring arbitrary state
for implementing deferred operations.
Generalize state save/restore and implement Push and Pop on top of
that.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
Elias Naur