646d14d2d3
Corruption has again been reported on Intel hardware running Xorg with the modesetting driver (which uses OpenGL based acceleration instead of SNA acceleration the intel driver defaults to). Reported in various forms on Sandy Bridge (X220), Ivy Bridge (X230) and Haswell (X240). Confirmed to not occur with the intel driver but the xserver was changed to default to the modesetting driver on >= gen4 hardware (except Ironlake). One means of triggering this is to open a large pdf with xpdf on an idle machine and highlight a section of the document. There have been reports of gpu hangs on gen4 intel hardware (T500 with GM45, X61 with 965GM) when starting Xorg as well.
32 lines
1.4 KiB
Plaintext
32 lines
1.4 KiB
Plaintext
ARB_texture_float:
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Silicon Graphics, Inc. owns US Patent #6,650,327, issued November 18,
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2003 [1].
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SGI believes this patent contains necessary IP for graphics systems
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implementing floating point rasterization and floating point
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framebuffer capabilities described in ARB_texture_float extension, and
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will discuss licensing on RAND terms, on an individual basis with
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companies wishing to use this IP in the context of conformant OpenGL
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implementations [2].
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The source code to implement ARB_texture_float extension is included
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and can be toggled on at compile time, for those who purchased a
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license from SGI, or are in a country where the patent does not apply,
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etc.
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The software is provided "as is", without warranty of any kind, express
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or implied, including but not limited to the warranties of
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merchantability, fitness for a particular purpose and noninfringement.
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In no event shall the authors or copyright holders be liable for any
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claim, damages or other liability, whether in an action of contract,
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tort or otherwise, arising from, out of or in connection with the
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software or the use or other dealings in the software.
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You should contact a lawyer or SGI's legal department if you want to
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enable this extension.
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[1] http://www.google.com/patents/about?id=mIIOAAAAEBAJ&dq=6650327
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[2] http://www.opengl.org/registry/specs/ARB/texture_float.txt
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