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GL_OES_get_program_binary Still Coming For Mesa

Mesa

Published on 02 January 2014 10:52 AM EST
Written by Michael Larabel in Mesa
3 Comments

One of the new extensions being worked on in early 2014 is for the OpenGL ES 2.0 GL_OES_get_program_binary extension to help with offline GLSL shader compilation.

The GL_OES_get_program_binary support for Mesa has been worked on for several months now but today Intel's Tapani Pälli published the latest work-in-progress patches for this feature.

Per the Khronos.org registry, "This extension introduces two new commands. GetProgramBinaryOES empowers an application to use the GL itself as an offline compiler. The resulting program binary can be reloaded into the GL via ProgramBinaryOES. This is a very useful path for applications that wish to remain portable by shipping pure GLSL source shaders, yet would like to avoid the cost of compiling their shaders at runtime. Instead an application can supply its GLSL source shaders during first application run, or even during installation. The application then compiles and links its shaders and reads back the program binaries. On subsequent runs, only the program binaries need be supplied! Though the level of optimization may not be identical -- the offline shader compiler may have the luxury of more aggressive optimization at its disposal -- program binaries generated online by the GL are interchangeable with those generated offline by an SDK tool."

The GL_OES_get_program_binary extension was originally written by an AMD employee and is slowly coming to the Mesa OpenGL ES drivers. The latest set of nine patches for this OpenGL ES extension can be found on the Mesa-dev list.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
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