Just curious. Why is this change better? Why not just leave these as is if it's not hurting anything?

On 20/11/18 6:24 pm, mathias.froehl...@gmx.net wrote:
From: Mathias Fröhlich <mathias.froehl...@web.de>

With the current VAO layout we do not need to make these
fields a bitfield. We get a tight struct layout with this change
for VAO attributes.

v2: Change unsigned char -> GLubyte.

Reviewed-by: Brian Paul <bri...@vmware.com>
Signed-off-by: Mathias Fröhlich <mathias.froehl...@web.de>
---
  src/mesa/main/mtypes.h | 4 ++--
  1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 62d3b75a36..157d45bc0b 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -1439,7 +1439,7 @@ struct gl_array_attributes
     /** Stride as specified with gl*Pointer() */
     GLshort Stride;
     /** Index into gl_vertex_array_object::BufferBinding[] array */
-   unsigned BufferBindingIndex:6;
+   GLubyte BufferBindingIndex;
/**
      * Derived effective buffer binding index
@@ -1454,7 +1454,7 @@ struct gl_array_attributes
      * Note that _mesa_update_vao_derived_arrays is called when binding
      * the VAO to Array._DrawVAO.
      */
-   unsigned _EffBufferBindingIndex:6;
+   GLubyte _EffBufferBindingIndex;
     /**
      * Derived effective relative offset.
      *

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