mesa: Fix GL_SHADER_BINARY_FORMATS query

There were two bugs here.  First, this and several other queries were
not available in a desktop GL context with GL_ARB_ES2_compatibility.
Second, GL_NUM_SHADER_BINARY_FORMATS returns zero, but
GL_SHADER_BINARY_FORMATS writes one element of data to the buffer.  If
NUM is zero, no data should be written.

Fixes piglit test 'arb_get_program_binary-overrun shader'.

NOTE: This is a candidate for stable release branches.

Signed-off-by: Ian Romanick <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>

0 files changed, 0 insertions, 0 deletions