In the long term, a lot of this package should be removed in favor of the
golang.org/x/image/math/f32 package. The latter is the common location for
matrix types shared across graphics libraries. For example, the
golang.org/x/image/draw package refers to golang.org/x/image/math/f64.
Change-Id: I9d7ccd3cb35912e0d9dc5bd46c919516ea840340
Reviewed-on: https://go-review.googlesource.com/11856
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
This does not break the dependency on the app package's AndroidContext
for loading assets on android. A potential answer for gobind-based
apps: add a SetAndroidContext method to app.Context. But I'll explore
that separately after the long weekend.
Change-Id: I812f899740e288c379eee7900f42d9d53926d4ce
Reviewed-on: https://go-review.googlesource.com/11675
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
This change will break Darwin. I have only built and tested this on
desktop linux and Android linux. A follow-up CL will fix Darwin.
Currently, OpenGL gets its own thread, and UI C code (e.g. the Android
event loop, or the X11 event loop) gets its own thread. This relies on
multiple system-provided UI-related C libraries working nicely together,
even when running on different threads. Keeping all the C code on the
one thread seems more sound.
As side-effects:
- In package app/debug, DrawFPS now takes an explicit Config.
- In package app, some callbacks now take an explicit Config.
- In package exp/sprite, Render now takes an explicit Config.
- In package event, there are new events (Config, Draw, Lifecycle),
and an event filter mechanism to replace multiple app Callbacks.
- In package geom, the deprecated Width, Height and PixelsPerPt global
variables were removed in favor of an event.Config that is
explicitly passed around (and does not require mutex-locking).
Converting a geom.Pt to pixels now requires passing a pixelsPerPt.
- In package gl, the Do, Start and Stop functions are removed, as well
as the need to call Start in its own goroutine. There is no longer a
separate GL thread. Instead, package app explicitly performs any GL
work (gl.DoWork) when some is available (gl.WorkAvailable).
- In package gl/glutil, Image.Draw now takes an explicit Config.
Callbacks are no longer executed on 'the UI thread'.
Changing the app programming model from callbacks to events (since a
channel of events works with select) will be a follow-up change.
Change-Id: Id9865cd9ee1c45a98c613e9021a63c17226a64b1
Reviewed-on: https://go-review.googlesource.com/11351
Reviewed-by: David Crawshaw <crawshaw@golang.org>
Destroy sounds like C, we should use Close in Go.
Change-Id: I73da732300a955e458513f15ad898b7f34c8ed7c
Reviewed-on: https://go-review.googlesource.com/9875
Reviewed-by: Nigel Tao <nigeltao@golang.org>
This app makes a sound as the gopher hits the edges of the screen.
Change-Id: I85c7d55ec88b1a9faec5dfb7b29e03d1149f5d65
Reviewed-on: https://go-review.googlesource.com/9698
Reviewed-by: Nigel Tao <nigeltao@golang.org>
