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ASIA 2013 (LCA13)
OpenGL ES3 and You
Tom Gall - tgall
tom_gall@linaro.org
www.linaro.org
ASIA 2013 (LCA13)
!2
Background
Open standard, free to access, free to implement, pay to certify

OpenGL ES, embedded version of Open GL
Includes Open GL SL ES

Khronos maintains standard
!3
Goals
Within OpenGL ES, WebGL, OpenVG, Renderscript where should "we"
be investing time?
!4
GLES3 Recent Events
Version 3 finalizedAug 2012

Hardware implementations

Binary driver implementations

Mesa implementation in gles3 branch
!5
Mesa Drivers
Soft pipe, swrast, llvmpipe - software rendering, all work on core

Intel ivy bridge HD4000, Sandy Bridge HD3000, Haswell, ValleyView, etc

AMD radeon

NVIDIA nouveau

Lima (Mali) GLES2

Freedreno (Adreno) GLES2
!6
Binary Drivers
Mali T-604 GLES3 submitted

PowerVR G6100 GLES3

Many more to come
!7
X86 activity
Mesa implementation

Piglit tests

Aug 2012, Intel first certification of Mesa 8.0.4 OpenGL ES 2 On Sandy
and Ivy

Feb 2012, Mesa 9.1 Ivy Bridge certified for OpenGL ES 3

Work was in open, "beat" everyone.
!8
Feature Comparison
Old spec 204 pages, new spec 347 pages

Very long delta list

• OpenGL Shading Language ES 3.00
• transform feedback 1 and 2 (with restrictions) 
• uniform buffer objects including block arrays 
• vertex array objects
• sampler objects
• sync objects and fences
• pixel buffer objects
• buffer subrange mapping
• .... Are you asleep yet?
!9
Who cares?
Game engines

Entertainment software

UI system engineers

What matters is the whole implementation....
!10
Waffle/Piglit
Waffle - an GL abstraction framework

Dynamically decide at run time, API, context, window env

Piglit - OpenGL, OpenGL ES, OpenCL, GLX test framework

6000 tests all total

GLSL tests quite methodical

API not so much
!11
Waffle/Piglit
!12
Waffle/Piglit
Piglit running on Android is a WIP

Piglit on Linux in LAVA is next
!13
Goals
While binary drivers are the rule, collaborate on the test. Piglit.

WebGL?

Invest a little effort in:

Mesa OpenGL ES 3, builds and runs

Piglit OpenGL ES 3 test cases run
!14
Discussion
Opinions?

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LCA13: OpenGL ES3 and You