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An Update On The OpenGL 3 Support In Mesa

Mesa

Published on 21 November 2010 04:32 PM EST
Written by Michael Larabel in Mesa
50 Comments

While the Mesa software stack has made some steps towards supporting OpenGL 3.x, this free software library used by open-source graphics drivers is still a ways from supporting this industry graphics API thats years old and has already been surpassed by OpenGL 4.x. There hasn't been too much major progress lately on GL3 support, but some think it could be achieved next year. When there is OpenGL 3.0 support in Mesa, it will be released as Mesa 8.0. Regardless, the OpenGL 3 status document for Mesa has been updated.

This document has just been updated to reflect the current status of OpenGL 3.x support within Mesa's core based upon recent activity, etc. This does not reflect the support necessarily being in place for all Mesa classic drivers or those Gallium3D drivers with the Mesa state tracker.

The changes mentioned in this Git commit include the support for non-normalized integer texture/frame-buffer formats being about half-way complete. The OpenGL dispatch support for the glClearBuffer, glGetStringi, glTexParameterI, and glGetTextParameterI commands is now complete. The glVertexAttribI command has also been now implemented.

After that there's still OpenGL 3.1, 3.2, 3.3, 4.0, and 4.1 support to tackle along with all of the GL Shading Language changes that it brings. Before Mesa catches up, we'll certainly see OpenGL 4.2 and in reality maybe even OpenGL 5.0 before Mesa has GL4/GLSL4 support in place. Support for some of the later OpenGL 3.x changes are already in place like rectangular textures, buffer copying, primitive restart, BGRA vertex order, base vertex offsets, seamless cube-maps, and fence objects, but the OpenGL 3.3 / OpenGL 4.0 work is still a ways out.

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