bgfx/3rdparty/glsl-optimizer/Changelog.md
2014-02-10 23:06:13 -08:00

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GLSL optimizer Change Log
=========================
2014 01
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Goodies:
* Better optimization: vectorize assignments to individual vector channels.
* More OpenGL ES 2.0 conformant printing of complex for-loops (loop inductions printed
as += or ++; loop initializers inside loop body).
Fixes:
* Fixed array assignments sometimes appearing in pre-GLSL1.20 versions, especially with
complex loops that couldn't be unrolled.
* Fixed output of textureOffset and texelFetch.
2013 12
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Goodies:
* Optimized performance; was spending half of the time in stupid string code.
* Added glslopt_shader_get_stats to get *very* approximate shader complexity stats.
* Nicer printing of complicated for-loops.
Fixes:
* Fixed printing of struct initializers.
2013 11
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Goodies:
* Better optimizations: CSE; `A+(-B) => A-B`; `!A || !B => !(A && B)`.
* Merged with upstream Mesa.
Fixes:
* Fixed location qualifiers, ES3.0 version printing, samplerCubeShadow sampling operations.
2013 10
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Goodies:
* Initial OpenGL ES 3.0 support
* API to query shader input names; glslopt_shader_get_input_count and glslopt_shader_get_input_name
Changes:
* Xcode project files updated to Xcode 5
Fixes:
* VS2013 fixes