This allows us to delete utils/NinePatchImpl.cpp and
utils/NinePatch.h
Test: Passed cts tests - DrawableTest, NinePatchTest,
NinePatchDrawableTest.
Change-Id: I6b5d09fa3479e758d8b931fa0e977c25f4435a7c
This is a clean up CL by resolving TODO in hwui/Typeface.cpp
Usually Typeface is listed in preloaded-classes and loaded during Zygote
initialization. However, on some devices, class preloading is disabled.
Paint.measureText can not be called before Typeface static initializer
and it may not load Typeface class.
To ensure that the font preloading happens in ZygoteInit even on such
devices, refer Typeface.DEFAULT static field in TextView.preloadFontCache
in TextView which also happens during zygote initialization.
Bug: 32374752
Test: Manually done
Change-Id: I773c154671c170bebad3aa0f9c04eee5a664b849
Removing the direct uses of the BakedOpRenderer should make
it easier for the SkiaGL pipeline to take advantage of these
debugging features.
Test: Verified that debug.hwui.show_dirty_regions and
debug.hwui.profile still behave as expected.
BUG:32370375
Change-Id: I2818bda4a18ec183c9c39ca080ad34a4dc89b5cd
This reverts commit 9cd73b6828e4e7475ab430c373efa2cd6dc69cea.
This causes a crash on Android Auto.
Bug: 32374752
Change-Id: I7fd0a52eb2458772ff50f246ca1c7d3397554133
Most changes are taken from ag/1407698, ag/1336660, ag/1488900.
Test: Built and run manually on angler-eng.
Change-Id: Id4e464b9a83c62b6bc7ea31a30e5ca6cd53b659d
on a per RenderNode basis. With Skia renderer we
see 30% speed improvement in Invalidate Tree UI Jank test,
when SkiaDisplayList objects are reused.
Test: manually built and run on angler-eng.
Change-Id: Ie4ec50ddb2015150e3ec678dde7ebed0c8d90067
This patch also makes tests to use SkBitmap backed by hwui/PixelRef,
Test: refactoring cl.
bug:27762775
Change-Id: Ib936e81877790849118420f5e565fc8f4466c1be
Use mCaches.size() to track item count instead of trying
to do it manually on the side.
Bug: 31856965
Test: manual, minimal. Repro steps for bug are unknown, fix
is speculative as a result
Change-Id: Ic32f27262548a99be95440881420d224ede4db74
With linear blending turned off some textures were still
created as sRGB textures instead of linear textures.
Multi-stop gradients were not behaving properly on devices
with no support for float textures.
Gradients are now always interpolated in linear space
even if linear blending is off.
New functions to always force sRGB->linear->sRGB conversions.
Test: Manual testing
Bug: 29940137
Change-Id: Ie2f84ee2a65fd85570e88af813e841e0e625df6c
This CL fixes a SkShader leak in VD when applying local matrix
to the shader. Specifically, the usage of newWithLocalMatrix(...)
increments the shader's ref count in every draw() call for
Gradient VectorDrawable, whereas there's no balancing call to
decrement the ref count in draw(). In this CL, we assume
the ownership of the shader returned from newWithLocalMatrix(...)
to ensure the correct ref count management.
Also, add test to verify that shader is no longer being leaked
BUG: 32067647
Test: this CL
Change-Id: Ic15fe46cde06a73d81b44e2d3c56b51907344cc0
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
