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Eagle is no more, Kristian has superseded it with true EGL support. He
is so happy...
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cairo_gl_surface_create_for_window assumes CONTENT_COLOR_ALPHA, so
make sure the fbconfig we choose is good enough. Fixes gl-window
testcase results to basically match the non-window testcases.
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glitz is unmaintained and the GL surface is far superior anyway.
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Trying to build xcb on a system without SHM wrapped by xcb. The right
answer would be to build libxcb-shm. The quick answer is to compile out
shm support.
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Still an experimental backend, it's now a little too late to stabilise
for 1.10, but this should represent a major step forward in its feature
set and an attempt to catch up with all the bug fixes that have been
performed on xlib. Notably not tested yet (and expected to be broken)
are mixed-endian connections and low bitdepth servers (the dithering
support has not been copied over for instance). However, it seems robust
enough for daily use...
Of particular note in this update is that the xcb surface is now capable
of subverting the xlib surface through the ./configure --enable-xlib-xcb
option. This replaces the xlib surface with a proxy that forwards all
operations to an equivalent xcb surface whilst preserving the cairo-xlib
API that is required for compatibility with the existing applications,
for instance GTK+ and Mozilla. Also you can experiment with enabling a
DRM bypass, though you need to be extremely foolhardy to do so.
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As proof-of-principle add the nearly working demonstrations of using DRM
to render directly with the GPU bypassing both RENDER and GL for
performance whilst preserving high quality rendering.
The basis behind developing these chip specific backends is that this is
the idealised interface that we desire for this chips, and so a target
for cairo-gl as we continue to develop both it and our GL stack.
Note that this backends do not yet fully pass the test suite, so only
use if you are brave and willing to help develop them further.
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Add a gl-window boilerplate target to exercise using GL to render to a
visible Drawable -- for instance, a window has a different coordinate
system to a framebuffer...
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Use the unifying cairo_device_t for cairo_script_context_t and replace.
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We were using _GNU_SOURCE throughout the codebase, so simply define it
once during configure. This is the easiest method to enable recursive
mutexes using pthreads, as required in a pending patch.
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Now that the image surface actually cares about
cairo_surface_mark_dirty() we're hitting cases where
we've forgotten to mark surfaces dirty.
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The new name is more descriptive than the rather opaque meta surface.
Discussed with vigour on the mailing list and #cairo:
http://lists.cairographics.org/archives/cairo/2009-July/017571.html
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All the error checking, finally pointed out that I was creating a pixmap
with the wrong depth! Oops.
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XCB avoids the dreaded abort on XError mechanism by forcing the client
to perform deferred error checking. So do so. This allows us to combine
the fire-and-forget rendering model with accurate error checking,
without killing the client or mixing our errors with theirs.
XCB for the win!
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The BSDs have dlsym() in libc rather than libdl.
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And it appears I touched the build system again and autoregenerated the
feature headers.
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This appears to be the simplest mechanism to build libglew at the moment -
should a system copy be unavailable. Fortunately libglew is now distributed
under a permissive licence.
If you want to pass 'make -C src check' you have to use the system copy,
or spend quite a bit of time cairo-fying libglew.
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There you go Joonas, I don't always ignore your suggestions! This is
simple patch to allow the user to disable symbol loops in case the
auto-detection fails on some obscure (perhaps OpenBSD) platform. Or in
case the user really wants to trim a few bytes from a library only used
during tracing!
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Improve detection, reporting and disabling of test backends when we lack
the required libraries and utilities.
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Some environments may be broken beyond our capabilities to detect, or
maybe the user is just insane and doesn't want to build my nice shiny
cairo-trace. Whatever, give them the option to choose:
$ ./configure --disable-trace
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Useful for running tests only for a given content type.
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Sometimes it's convenient to run the regression or performance tests
against a given target with a given content. Now we accept an optional
content specifier as a suffix .<content> on a target name, where
<content> is rgb or rgba.
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test == != -eq
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The make-cairo-(test|boilerplate)-constructors scripts ought
never to be called without arguments lest we are left constructorless.
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And exercise RGB code-paths.
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For the purposes of benchmarking it is useful to run cairo-perf against a
different library from the one it was compiled against. In order to do so,
we need to check that the runtime library contains the required entry
points for our targets - which we can check by using dlsym.
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Originally written by Vladimir Vukicevic to investigate using Skia for
Mozilla, it provides a nice integration with a rather interesting code
base. By hooking Skia underneath Cairo it allows us to directly compare
code paths... which is interesting.
[updated by Chris Wilson]
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A very simple surface that produces a hierarchical DAG in a simple XML
format. It is intended to be used whilst debugging, for example with the
automatic regression finding tools of cairo-sphinx, and with test suites
that just want to verify that their code made a particular Cairo call.
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Add a new surface type that multiplies it input onto several output
surfaces. The only limitation is that it requires a master surface that is
used whenever we need to query surface options, such as font options and
extents.
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Include the desired content with the creation info.
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cairo_script_context_t is an encapsulation object for interfacing with the
output - multiple surfaces can share the same context, meaning that they
write to the same destination file/stream.
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Remove the intermediate C program that was a nuisance whilst
cross-compiling and replace it with a simple shell script that is just a
combination of cat + sed.
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Prior to introduction of the buggy members to the surface, we obviously
cannot set them. However, the boilerplate code is meant to compile against
older revisions of the library so we need to check for the existence prior
to use.
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The xlib surface caches flags based on RENDER version, so after disabling
render to force fallbacks, we need to ensure that the flags are reset.
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Use the DRM interface to h/w accelerate composition on image surfaces.
The purpose of the backend is simply to explore what such a hardware
interface might look like and what benefits we might expect. The
use case that might justify writing such custom backends are embedded
devices running a drm compositor like wayland - which would, for example,
allow one to write applications that seamlessly integrated accelerated,
dynamic, high quality 2D graphics using Cairo with advanced interaction
(e.g. smooth animations in the UI) driven by a clutter framework...
In this first step we introduce the fundamental wrapping of GEM for intel
and radeon chipsets, and, for comparison, gallium. No acceleration, all
we do is use buffer objects (that is use the kernel memory manager) to
allocate images and simply use the fallback mechanism. This provides a
suitable base to start writing chip specific drivers.
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Handling clip as part of the surface state, as opposed to being part of
the operation state, is cumbersome and a hindrance to providing true proxy
surface support. For example, the clip must be copied from the surface
onto the fallback image, but this was forgotten causing undue hassle in
each backend. Another example is the contortion the meta surface
endures to ensure the clip is correctly recorded. By contrast passing the
clip along with the operation is quite simple and enables us to write
generic handlers for providing surface wrappers. (And in the future, we
should be able to write more esoteric wrappers, e.g. automatic 2x FSAA,
trivially.)
In brief, instead of the surface automatically applying the clip before
calling the backend, the backend can call into a generic helper to apply
clipping. For raster surfaces, clip regions are handled automatically as
part of the composite interface. For vector surfaces, a clip helper is
introduced to replay and callback into an intersect_clip_path() function
as necessary.
Whilst this is not primarily a performance related change (the change
should just move the computation of the clip from the moment it is applied
by the user to the moment it is required by the backend), it is important
to track any potential regression:
ppc:
Speedups
========
image-rgba evolution-20090607-0 1026085.22 0.18% -> 672972.07 0.77%: 1.52x speedup
▌
image-rgba evolution-20090618-0 680579.98 0.12% -> 573237.66 0.16%: 1.19x speedup
▎
image-rgba swfdec-fill-rate-4xaa-0 460296.92 0.36% -> 407464.63 0.42%: 1.13x speedup
▏
image-rgba swfdec-fill-rate-2xaa-0 128431.95 0.47% -> 115051.86 0.42%: 1.12x speedup
▏
Slowdowns
=========
image-rgba firefox-periodic-table-0 56837.61 0.78% -> 66055.17 3.20%: 1.09x slowdown
▏
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Conflicts:
boilerplate/Makefile.sources
boilerplate/cairo-boilerplate.c
build/configure.ac.features
src/cairo.h
util/cairo-script/Makefile.am
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Based on the work by Øyvind Kolås and Pierre Tardy -- many thanks to
Pierre for pushing this backend for inclusion as well as testing and
reviewing my initial patch. And many more thanks to pippin for writing the
backend in the first place!
Hacked and chopped by myself into a suitable basis for a backend. Quite a
few issues remain open, but would seem to be ready for testing on suitable
hardware.
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Need to play a little dance to get the sources included and paths correct
whilst building source files with objdir != srcdir under distcheck.
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Deleted so many, and forgot to add just this little one. Sigh.
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Replace the internal test-meta surface will the freshly exported,
real meta-surface.
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By moving the backend target definition out of the massive amlagamated
block in cairo-boilerplate.c and into each of the
cairo-boilerplate-backend.c, we make it much easier to add new targets as
the information need only be entered in a single file and not scattered
across three. However, updating the target interface means trawling across
all the files -- except given that I found it difficult maintaining the
single massive array I do not see this as an increase in the maintenance
burden.
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