mesa: Update _ElementSize in a few more places.

src/mesa/vbo/vbo_context.c

@@ -145,6 +145,7 @@ static void init_mat_currval(struct gl_context *ctx)
       cl->Stride = 0;
       cl->StrideB = 0;
       cl->Enabled = 1;
+      cl->_ElementSize = cl->Size * sizeof(GLfloat);
       _mesa_reference_buffer_object(ctx, &cl->BufferObj,
                                     ctx->Shared->NullBufferObj);
    }

src/mesa/vbo/vbo_exec_api.c

@@ -168,6 +168,8 @@ static void vbo_exec_copy_to_current( struct vbo_exec_context *exec )
              * directly.
              */
             vbo->currval[i].Size = exec->vtx.attrsz[i];
+            assert(vbo->currval[i].Type == GL_FLOAT);
+            vbo->currval[i]._ElementSize = vbo->currval[i].Size * sizeof(GLfloat);
 
             /* This triggers rather too much recalculation of Mesa state
              * that doesn't get used (eg light positions).

src/mesa/vbo/vbo_save_draw.c

@@ -90,6 +90,8 @@ _playback_copy_to_current(struct gl_context *ctx,
             memcpy(current, tmp, 4 * sizeof(GLfloat));
 
             vbo->currval[i].Size = node->attrsz[i];
+            assert(vbo->currval[i].Type == GL_FLOAT);
+            vbo->currval[i]._ElementSize = vbo->currval[i].Size * sizeof(GLfloat);
 
             if (i >= VBO_ATTRIB_FIRST_MATERIAL &&
                 i <= VBO_ATTRIB_LAST_MATERIAL)