Mesa (master): mesa: Always generate GL_INVALID_OPERATION in _mesa_GetProgramBinary

[Ian Romanick]

Module: Mesa
Branch: master
Commit: f591712efeb9a757379d1e89907e2147749aaf6c
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=f591712efeb9a757379d1e89907e2147749aaf6c

Author: Ian Romanick <ian.d.romanick at intel.com>
Date:   Sun Dec 21 12:06:23 2014 -0800

mesa: Always generate GL_INVALID_OPERATION in _mesa_GetProgramBinary

There are no binary formats supported, so what are you doing?  At least
this gives the application developer some feedback about what's going
on.  The spec gives no guidance about what to do in this scenario.

Signed-off-by: Ian Romanick <ian.d.romanick at intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=87516
Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>
Acked-by: Leight Bade <leith at mapbox.com>

---

 src/mesa/main/shaderapi.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/mesa/main/shaderapi.c b/src/mesa/main/shaderapi.c
index 656ee11..118e8a7 100644
--- a/src/mesa/main/shaderapi.c
+++ b/src/mesa/main/shaderapi.c
@@ -1718,6 +1718,8 @@ _mesa_GetProgramBinary(GLuint program, GLsizei bufSize, GLsizei *length,
    }
 
    *length = 0;
+   _mesa_error(ctx, GL_INVALID_OPERATION,
+               "glGetProgramBinary(driver supports zero binary formats)");
 
    (void) binaryFormat;
    (void) binary;