| cf51a4199835e9604aa4c8b3854306f8fbabbf33 |
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09-Apr-2013 |
Romain Guy <romainguy@google.com> |
Introduce PixelBuffer API to enable PBOs
PBOs (Pixel Buffer Objects) can be used on OpenGL ES 3.0 to perform
asynchronous texture uploads to free up the CPU. This change does not
enable the use of PBOs unless a specific property is set (Adreno drivers
have issues with PBOs at the moment, Mali drivers work just fine.)
This change also cleans up Font/FontRenderer a little bit and improves
performance of drop shadows generations by using memcpy() instead of
a manual byte-by-byte copy.
On GL ES 2.0 devices, or when PBOs are disabled, a PixelBuffer instance
behaves like a simple byte array. The extra APIs introduced for PBOs
(map/unmap and bind/unbind) are pretty much no-ops for CPU pixel
buffers and won't introduce any significant overhead.
This change also fixes a bug with text drop shadows: if the drop
shadow is larger than the max texture size, the renderer would leave
the GL context in a bad state and generate 0x501 errors. This change
simply skips drop shadows if they are too large.
Change-Id: I2700aadb0c6093431dc5dee3d587d689190c4e23
/frameworks/base/libs/hwui/font/CacheTexture.cpp
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| 0908764b2b3cf5075df4178a5f0a8547dcb7b317 |
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04-Apr-2013 |
Romain Guy <romainguy@google.com> |
First OpenGL ES 3.0 based optimization
This change uses a new OpenGL ES 3.0 feature to upload less data when
the font cache needs to be update. This can result in significant
performance improvements on device with large textures or with locales
that use a lot of glyphs (CJK for instance.)
This change also fixes various unpack alignment issues. The unpack
alignment, as well as the unpack row length, is not texture specific
but a global state that affect all glTex/SubImage2D calls. Some of
them were missing the appropriate glPixelStorei() call. This could
result in corrupted textures.
Change-Id: Iefb429d4d0d0b4e0faeadf27daafee6d30a21d85
/frameworks/base/libs/hwui/font/CacheTexture.cpp
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| 661a87ec28a49458f1faf533783abf2ab9927cab |
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19-Mar-2013 |
Romain Guy <romainguy@google.com> |
Reduce number of glDraw calls when drawing text
This change moves the mesh buffer from FontRenderer to CacheTexture
to help reduce the number of texture binds and glDraw calls when
drawing text that spans across multiple textures.
Change-Id: I7de574d88313ca3672879ca878c253ff5f131fc1
/frameworks/base/libs/hwui/font/CacheTexture.cpp
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| ca79cf69d09efa0c327e9b1237d86a119aea5da7 |
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14-Aug-2012 |
Derek Sollenberger <djsollen@google.com> |
Update framework to support r5967 of Skia.
bug: 6906025
Change-Id: Iefdb830ec3aa2ab3472c1c142484a7aa21788a15
/frameworks/base/libs/hwui/font/CacheTexture.cpp
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| b92d8f7979c29c7c09932578a11b2f8d6eec1d90 |
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21-Sep-2012 |
Chet Haase <chet@google.com> |
Optimize glyph cache texture uploads
Only upload the changed area of the glyph cache, not the entire
bitmap. Note that we can't do the full-on optimization here of copying a sub-rect
of the bitmap because of GL ES 2 limitations, but we can at least copy the
horizontal stripe containing the dirty rect, which can still be a big
savings over uploading the entire bitmap.
Issue #7158326 Bad framerates on MR1 (Mako, Manta, Prime)
Change-Id: Iab38d53202650f757ead4658cf4287bdad2b3cb9
/frameworks/base/libs/hwui/font/CacheTexture.cpp
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| e43f785b7ff3fdf75f6d1c92282ebca6db191f2f |
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05-Sep-2012 |
Romain Guy <romainguy@google.com> |
Correctly check the height of a glyph prior to caching it
Change-Id: Iaf3977afc20fcde65bfda7b9e092b3e723241684
/frameworks/base/libs/hwui/font/CacheTexture.cpp
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| 9b1204baf4740b4d443e72157dea98571cf84e1f |
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05-Sep-2012 |
Romain Guy <romainguy@google.com> |
Small code cleanup in FontRenderer
Change-Id: I09c00debe9b0b4f45b232cae402ed19bdaeabfe4
/frameworks/base/libs/hwui/font/CacheTexture.cpp
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| 9f5dab3fc228fa11c32b483e6101ec086895a32b |
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04-Sep-2012 |
Romain Guy <romainguy@google.com> |
Refactor FontRenderer.cpp
FontRenderer.h defined several classes and structures that now live
in the font/ folder. This will make the code easier to read and
maintain.
Change-Id: I3dc044e9bde1d6515f8704f5c72462877d279fe2
/frameworks/base/libs/hwui/font/CacheTexture.cpp
|