nir/linker: Fix TRANSFORM_FEEDBACK_BUFFER_INDEX

From the ARB_enhanced_layouts specification:

  "For the property TRANSFORM_FEEDBACK_BUFFER_INDEX, a single integer
   identifying the index of the active transform feedback buffer
   associated with an active variable is written to <params>.  For
   variables corresponding to the special names "gl_NextBuffer",
   "gl_SkipComponents1", "gl_SkipComponents2", "gl_SkipComponents3",
   and "gl_SkipComponents4", -1 is written to <params>."

We were storing the xfb_buffer value, instead of the value
corresponding to GL_TRANSFORM_FEEDBACK_BUFFER_INDEX.

Note that the implementation assumes that varyings would be sorted by
offset and buffer.

Signed-off-by: Antia Puentes <[email protected]>
Signed-off-by: Alejandro Piñeiro <[email protected]>

Reviewed-by: Timothy Arceri <[email protected]>

0 files changed, 0 insertions, 0 deletions