| efb4b06493fe7b1604c762a448b13c7af2845a8d |
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27-Feb-2017 |
Romain Guy <romainguy@google.com> |
Add ColorSpace information on Bitmap
This is the first step toward interpreting color spaces at render time.
Bug: 32984164
Test: BitmapColorSpaceTest in CtsGraphicsTestCases
Change-Id: I0164a18f1ed74a745874fe5229168042afe27a04
/frameworks/base/libs/hwui/Extensions.cpp
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| b136c8556efaec0aa2645c1b3bb526c56c50b96c |
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01-Dec-2016 |
Romain Guy <romainguy@google.com> |
Query GL version before using it
Bug: 32984164
Test: manual testing of linear blending
Change-Id: Ie20bdc34d1b98e93eae22b15f3e2a7994d3b4ff7
/frameworks/base/libs/hwui/Extensions.cpp
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| 8762e332e3797fb41929a1c6069207f4906ca329 |
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12-Oct-2016 |
Romain Guy <romainguy@google.com> |
Various fixes for linear blending and gradients
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
/frameworks/base/libs/hwui/Extensions.cpp
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| 253f2c213f6ecda63b6872aee77bd30d5ec07c82 |
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29-Sep-2016 |
Romain Guy <romainguy@google.com> |
Linear blending, step 1
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
/frameworks/base/libs/hwui/Extensions.cpp
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| 1540153198fc59e5f344b363c198acf5b65251aa |
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16-Nov-2015 |
John Reck <jreck@google.com> |
Extensions must load in ctor
Because Caches is terrible
Change-Id: I91e2442d97664759ee2c7602eb7172f009b20d53
/frameworks/base/libs/hwui/Extensions.cpp
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| 704bed0da7cc75d0c517d425445de70ceb58060b |
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05-Nov-2015 |
John Reck <jreck@google.com> |
add DeviceInfo
This reverts commit 096895550b9d5430d7a001d491566decf4f9791b.
Change-Id: Ib2ed1e96d8f7f88302f5e27fe735687194553104
/frameworks/base/libs/hwui/Extensions.cpp
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| 096895550b9d5430d7a001d491566decf4f9791b |
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05-Nov-2015 |
John Reck <jreck@google.com> |
Revert "add DeviceInfo"
This reverts commit b2442896e3a226c7ebe9d47fa80b257e98a6a34d.
Change-Id: I50f6555451f71067505245333c8e558b5e3b2b3b
/frameworks/base/libs/hwui/Extensions.cpp
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| b2442896e3a226c7ebe9d47fa80b257e98a6a34d |
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04-Nov-2015 |
John Reck <jreck@google.com> |
add DeviceInfo
Change-Id: I4c122278a7e88b6f47c4dd3c5fc553df7d3c900d
/frameworks/base/libs/hwui/Extensions.cpp
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| 6b50780363d3bb8db600c770183fa07677509ae8 |
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03-Nov-2015 |
John Reck <jreck@google.com> |
Remove almost-all android::Singleton users
Bug: 25426213
Change-Id: I88e6206e8915cce95c3a8a8a82a4bb8fbf668141
/frameworks/base/libs/hwui/Extensions.cpp
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| 6e6646c03788f198a9878763680c05342d7622f3 |
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15-Sep-2015 |
Chris Craik <ccraik@google.com> |
Unify extensions parsing behavior
Removes remnants of EGL extension support, and persistence of
GL extension list.
Change-Id: I35aec12d900bdb33549ea47654bb8146f350ef48
/frameworks/base/libs/hwui/Extensions.cpp
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| 149173d28c0843aba86b0810ce75b34be6a0d08f |
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10-Aug-2015 |
John Reck <jreck@google.com> |
Support new EGL extensions
Bug: 21753739
Includes a revert of 13d1b4ab10fbee5e81a2ba1ac59cfae1e51d3ef0
as that only supported EGL_EXT_buffer_age
Change-Id: Ia86a47d19e3355c067934d7764c330b640c6958d
/frameworks/base/libs/hwui/Extensions.cpp
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| 016e0091d66781c131fbc29a156b464b1151c5c8 |
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04-Aug-2015 |
John Reck <jreck@google.com> |
am b47ea9b2: am 2fa3eec0: am 93c14069: Merge "hwui: add extension to support unpack operations in OpenGL ES 2.0"
* commit 'b47ea9b2ed24f8eb6fc8b338555ff0d8825d8565':
hwui: add extension to support unpack operations in OpenGL ES 2.0
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| b47ea9b2ed24f8eb6fc8b338555ff0d8825d8565 |
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04-Aug-2015 |
John Reck <jreck@google.com> |
am 2fa3eec0: am 93c14069: Merge "hwui: add extension to support unpack operations in OpenGL ES 2.0"
* commit '2fa3eec0e1807f6a45b71a41624698e8cc949026':
hwui: add extension to support unpack operations in OpenGL ES 2.0
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| d538d30e2f498de12a46e2aa3b0814c8d9526226 |
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04-Aug-2015 |
xiaozhengdong <xiaozhengdong@xiaomi.com> |
hwui: add extension to support unpack operations in OpenGL ES 2.0
OpenGL ES 3.0+ lets us specify the row length for unpack operations
such as glTexSubImage2D(). This allows us to upload a sub-rectangle
of a texture. Also, the GL_EXT_unpack_subimage extension can also
support this feature in OpenGL ES 2.0
Change-Id: Id43c2c55c5eaefbace67087c955f0b4324fb2c35
Signed-off-by: xiaozhengdong <xiaozhengdong@xiaomi.com>
/frameworks/base/libs/hwui/Extensions.cpp
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| 5a4690bf26932c0d6940e4af8516d920e09ae81a |
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14-Jul-2015 |
Chris Craik <ccraik@google.com> |
Clean up unncessary defines
LOG_TAG and TRACE_TAG are already defined in the makefile
Change-Id: I9e53e3dacbe018441edd74cb7c8c90846defee74
/frameworks/base/libs/hwui/Extensions.cpp
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| 041b985dbb2f75aa492236d46ab47dbda8c2c74e |
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25-Feb-2015 |
John Reck <jreck@google.com> |
Add null egl/gles stub support
Change-Id: I41372585202f69ef31a4ef95efc75fb7a1ff7289
/frameworks/base/libs/hwui/Extensions.cpp
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| 117bdbcfa3e8306dad21e7e01fa71b00cdfa7265 |
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05-Feb-2015 |
Chris Craik <ccraik@google.com> |
Glop ColorFilter & VertexBuffer support, initial enable
Enables Glop rendering for supported Rects and VertexBuffers
Also removes unused Query object
Change-Id: Ibe227bc362685a153159f75077664f0947764e06
/frameworks/base/libs/hwui/Extensions.cpp
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| d41c4d8c732095ae99c955b6b82f7306633004b1 |
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06-Jan-2015 |
Chris Craik <ccraik@google.com> |
Add overrides and switch to nullptr keyword for all files
Adds remaining missing overrides and nullptr usages, missed due to
an extreme failure in tool usage.
Change-Id: I56abd72975a3999ad13330003c348db40f59aebf
/frameworks/base/libs/hwui/Extensions.cpp
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| 6cad75744ed3b81cf2c96f545368067b62c726ec |
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24-Jul-2013 |
Romain Guy <romainguy@google.com> |
Fix 9patches' limitation of 32 empty quads
The 9patch format allows to define more empty quads than this, remove
the use of a single int to index empty quads and replace it with a
lookup in the 9patch resource data structure.
Change-Id: I148ee5d9e0c96822b534a344e15c9d88078db7c2
/frameworks/base/libs/hwui/Extensions.cpp
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| 31e08e953fe7bdb1b1cbc247156cb6a19917a2f1 |
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19-Jun-2013 |
Romain Guy <romainguy@google.com> |
Share Caches' index buffer with FontRenderer
This reduces state changes when we draw 9patches and text together,
which happens *a lot*. Also disable the NV profiling extension by
default since it doesn't play nice with display lists deferrals.
To enable it set debug.hwui.nv_profiling to true.
Change-Id: I518b44b7d294e5def10c78911ceb9f01ae401609
/frameworks/base/libs/hwui/Extensions.cpp
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| e9bc11f7121dbe373b0cbe5779ee6a12d824492c |
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23-May-2013 |
Romain Guy <romainguy@google.com> |
Add PerfHUD ES profiling capabilities
The eglGetSystemTimeNV extension can be used to enable profiling
in PerfHUD ES. When the delta of two calls to eglGetSystemTimeNV
equals 0, we now cancels display lists updates. This allows the
tool to redraw the same frame several times in a row to run its
analysis.
For better results profiling should only be attempted after
setting viewroot.profile_rendering to true using adb shell
setprop.
Change-Id: I02e3c237418004cff8d6cb0b9a37126efae44c90
/frameworks/base/libs/hwui/Extensions.cpp
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| df1dc28ba0c63b195016ad0453fc58025ee82acb |
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30-Mar-2013 |
Romain Guy <romainguy@google.com> |
Add internal API to query GL version number
Change-Id: Idc02efc237b8e97445a9bab05c291bf193c7f279
/frameworks/base/libs/hwui/Extensions.cpp
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| 3bbacf27c0be1bae4e4483577fc89ae3113abe5d |
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07-Feb-2013 |
Romain Guy <romainguy@google.com> |
Add a RenderBuffer object to store stencil buffers.
Bug #7146141
This change is needed to add a render buffer cache to avoid
creating and destroying stencil buffers on every frame.
This change also allows the renderer to use a 1 bit or 4 bit
stencil buffer whenever possible.
Finally this change fixes a bug introduced by a previous CL
which causes the stencil buffer to not be updated in certain
conditions. The fix relies on a new optional parameter in
drawColorRects() that can be used to avoid performing a
quickReject on rectangles generated by the clip region.
Change-Id: I2f55a8e807009887b276a83cde9f53fd5c01199f
/frameworks/base/libs/hwui/Extensions.cpp
|