The GraphicsEnvironment class is given information during application
start, and makes it available to EGL/GLES/Vulkan loaders that don't
have easy access to the VM or to the application Context. Currently
only the driver path is handled, but the existing support for setting
library paths (for Vulkan extensions) and cache directory information
should move here.
Bug: 33531483
Test: various apps w/ and w/o driver package installed
Change-Id: I5820d3d1301d5461e10706f551b268c54d4f8926
(cherry picked from commit b12249b67193df07a8ffc3cad0c41643662b887b)
The GraphicsEnvironment class is given information during application
start, and makes it available to EGL/GLES/Vulkan loaders that don't
have easy access to the VM or to the application Context. Currently
only the driver path is handled, but the existing support for setting
library paths (for Vulkan extensions) and cache directory information
should move here.
Bug: 33531483
Test: various apps w/ and w/o driver package installed
Change-Id: I5820d3d1301d5461e10706f551b268c54d4f8926
Test: Existing CTS tests for Movie.
SkTRegistry was renamed and moved (with the intent of being private to
Skia) in https://skia-review.googlesource.com/c/6881.
There is only one class registred anyway, so make Movie::DecodeStream
just check GIF manually.
Change-Id: I7fa668cf13c902b49f2848bce4d86ad83020970f
This CL enables developers to specify axis values to the underlying
font collection. The specification of the font variation settings is
the same as the CSS font-variation-settings attribute in CSS working
draft as of 2016-11-30.
Code example: Here is an example to set width 100 and weight 1.5.
TextView tv = (TextView) findViewById(R.id.textView);
tv.setFontVariationSettings("'wdth' 100, 'wght' 1.5");
Bug: 33062398
Test: Manually done. Ran FrameworksGraphicsTests, CtsGraphicsTestCases
and CtsWidgetTestCases
Change-Id: I249d464f8cdaa56017a987588b94ed685aadeb58
This reenables color conversion to sRGB at decode time.
Use the value ANDROID_LINEAR_BLENDING_ENABLED to decide
whether to use the codec's linear premultiply or manually
perform a legacy premultiply.
Test: Demonstrated that legacy premultiply is still
faster than the linear premultiply. So the performance
of the two pass approach (decode, then premultiply)
is acceptable. Skia tests both of these decoding modes.
BUG:33741991
BUG:8860389
BUG:24279600
Change-Id: Idea0f359565bd8c7c3ba06e77a897173677db1c6
Move ContextHub service from system core to a more appropriate place
for a service.
Test: GTS tests pass.
Change-Id: Ie0f25414fc472a0214c0dd94e7ad4564cd38f842
Move libandroid_runtime's headers into its source directory, and export
them to modules that link against libandroid_runtime. Also fixes
one unused-paramter warning that was hidden by the use of -isystem to
include frameworks/base/include.
Bug: 33630870
Test: m -j native
Change-Id: Id6c2561d6c7d82a7ca2d183f11b1d3d3dcb42843
The CL adds FuseAppLoop internal class to the framework. It parses FUSE commands
from the proxy in the system service and invokes a callback provided by
application.
Bug: 29970149
Test: None, will be tested with CTS for StorageManager#openProxyFileDescriptor.
Change-Id: I10b2add4c2743fb91eae3cb194f55843a74fb668
libvulkan won't link libziparchive statically. So libziparchive
should be linked explicitly.
Test: building succeeded, and the image was tested on angler.
Bug: 33056637
Change-Id: Icb392968f65227919ebccf66677961868e692613
Test: Refactor. Relying on existing tests of android.graphics.Movie.
Skia is no longer working on SkMovie, so move it to the only place that
it is used.
Files moved from Skia (all the added files) are unchanged except for
renames (SkMovie -> Movie; SkGIFMovie -> GIFMovie).
Change-Id: I5f12d5def5fe825dda637f8aecf84e73e2dae9ca
NOTE: Linear blending is currently disabled in this CL as the
feature is still a work in progress
Android currently performs all blending (any kind of linear math
on colors really) on gamma-encoded colors. Since Android assumes
that the default color space is sRGB, all bitmaps and colors
are encoded with the sRGB Opto-Electronic Conversion Function
(OECF, which can be approximated with a power function). Since
the power curve is not linear, our linear math is incorrect.
The result is that we generate colors that tend to be too dark;
this affects blending but also anti-aliasing, gradients, blurs,
etc.
The solution is to convert gamma-encoded colors back to linear
space before doing any math on them, using the sRGB Electo-Optical
Conversion Function (EOCF). This is achieved in different
ways in different parts of the pipeline:
- Using hardware conversions when sampling from OpenGL textures
or writing into OpenGL frame buffers
- Using software conversion functions, to translate app-supplied
colors to and from sRGB
- Using Skia's color spaces
Any type of processing on colors must roughly ollow these steps:
[sRGB input]->EOCF->[linear data]->[processing]->OECF->[sRGB output]
For the sRGB color space, the conversion functions are defined as
follows:
OECF(linear) :=
linear <= 0.0031308 ? linear * 12.92 : (pow(linear, 1/2.4) * 1.055) - 0.055
EOCF(srgb) :=
srgb <= 0.04045 ? srgb / 12.92 : pow((srgb + 0.055) / 1.055, 2.4)
The EOCF is simply the reciprocal of the OECF.
While it is highly recommended to use the exact sRGB conversion
functions everywhere possible, it is sometimes useful or beneficial
to rely on approximations:
- pow(x,2.2) and pow(x,1/2.2)
- x^2 and sqrt(x)
The latter is particularly useful in fragment shaders (for instance
to apply dithering in sRGB space), especially if the sqrt() can be
replaced with an inversesqrt().
Here is a fairly exhaustive list of modifications implemented
in this CL:
- Set TARGET_ENABLE_LINEAR_BLENDING := false in BoardConfig.mk
to disable linear blending. This is only for GLES 2.0 GPUs
with no hardware sRGB support. This flag is currently assumed
to be false (see note above)
- sRGB writes are disabled when entering a functor (WebView).
This will need to be fixed at some point
- Skia bitmaps are created with the sRGB color space
- Bitmaps using a 565 config are expanded to 888
- Linear blending is disabled when entering a functor
- External textures are not properly sampled (see below)
- Gradients are interpolated in linear space
- Texture-based dithering was replaced with analytical dithering
- Dithering is done in the quantization color space, which is
why we must do EOCF(OECF(color)+dither)
- Text is now gamma corrected differently depending on the luminance
of the source pixel. The asumption is that a bright pixel will be
blended on a dark background and the other way around. The source
alpha is gamma corrected to thicken dark on bright and thin
bright on dark to match the intended design of fonts. This also
matches the behavior of popular design/drawing applications
- Removed the asset atlas. It did not contain anything useful and
could not be sampled in sRGB without a yet-to-be-defined GL
extension
- The last column of color matrices is converted to linear space
because its value are added to linear colors
Missing features:
- Resource qualifier?
- Regeneration of goldeng images for automated tests
- Handle alpha8/grey8 properly
- Disable sRGB write for layers with external textures
Test: Manual testing while work in progress
Bug: 29940137
Change-Id: I6a07b15ab49b554377cd33a36b6d9971a15e9a0b
ThreadedRenderer was never the right place for this anyway, and
ApplicationLoaders can provide both the full library search path (not
just the extracted native library dir) as well as the application loader
namespace.
Bug: 28213888
Change-Id: Ibcc0a9178da4dba6f3f3105932fdac1a1d0261af
