gl-1.5-vertex-buffer-offsets: test unusual vertex offsets/strides

The draw-vertices tests exercises unusual vertex sizes and strides,
but not with interleaved arrays.

This test creates a VBO with interleaved vertex positions and colors.
The colors are positioned at offsets like 9, 10 and 11 bytes from the
start of the vertex.  Unusual strides between vertices are tested too.

Exercises a bug in Gallium's u_vbuf code where the driver was passed
pipe_vertex_element::src_offset values which weren't a multiple of
four, even when PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY
returned 1.

v2: add more comments, specifically describing Flockers.  Return "warn"
if a test fails, not "fail".

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>

0 files changed, 0 insertions, 0 deletions