[Mesa-dev] [Bug 93053] GL_PROGRAM_BINARY_LENGTH always reports 0

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93053

            Bug ID: 93053
           Summary: GL_PROGRAM_BINARY_LENGTH always reports 0
           Product: Mesa
           Version: unspecified
          Hardware: All
                OS: All
            Status: NEW
          Severity: major
          Priority: medium
         Component: Mesa core
          Assignee: mesa-dev at lists.freedesktop.org
          Reporter: weilercdale at gmail.com
        QA Contact: mesa-dev at lists.freedesktop.org

shaderapi.c always stores 0 for GL_PROGRAM_BINARY_LENGTH when placing a
ProgramParameter call. This unfortunately is not a valid value to store there
unless GL_LINK_STATUS is GL_FALSE. The size returned by this call should be the
amount of bytes required to place a call to GetProgramBinary. There seems to be
no way in mesa to safely obtain a program binary without trying
GetProgramBinary in a loop, reallocating the buffer as necessary to store the
binary until it succeeds. Unfortunately there is no way to distinguish if the
function call is failing because of lack of memory or because of something
else.

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