[Piglit] [v2] ARB_transform_feedback3 tests

[Topi Pohjolainen]

This series is still work in progress. There is some overlap between
as I've been trying different things out in order to understand the
spec better.

The first test in the series experiments with mixed mode where
multiple attributes are recorded into multiple separate buffers.
Previously one could only operate using either multiple attributes
in single buffer or using multiple buffers each holding exactly one
attribute.

The second test makes use of the possibility of geometry shaders to
emit more than vertex stream. This test tries to use as many streams
as possible.

The third test is another flavour of the first test. Whereas the 
first uses fixed amount of attributes (two) and maximum amount of
buffers, this test uses just two buffers and five attributes but
allows also to pipeline to execute the geometry stage maximum amount
of times while still using the same vertex stream.

The last test records vertices using multiple streams and re-draws
some of them.

These tests pass on 4.2.0 NVIDIA 304.88 binary driver.

Topi Pohjolainen (7):
  tests/spec: relax config for EXT_transform_feedback separate
  util: buffer object probe
  tests/spec: ARB_transform_feedback3 interleaved in separate buffers
  tests/spec: ARB_transform_feedback3 interleaved in multiple streams
  tests/spec: ARB_transform_feedback3 interleaved in two buffers
  tests/spec: relax config for ARB_transform_feedback2 redrawing
  tests/spec: ARB_transform_feedback3 interleaved stream re-draw

 tests/all.tests                                    |   8 +
 tests/spec/CMakeLists.txt                          |   1 +
 tests/spec/arb_transform_feedback2/draw-auto.c     |   4 +-
 .../spec/arb_transform_feedback3/CMakeLists.gl.txt |  16 +
 tests/spec/arb_transform_feedback3/CMakeLists.txt  |   1 +
 .../ext_interleaved_draw_streams.c                 | 388 +++++++++++++++++++++
 .../ext_interleaved_single_gs_many_streams.c       | 346 ++++++++++++++++++
 .../ext_interleaved_single_stream_many_buffers.c   | 332 ++++++++++++++++++
 .../ext_interleaved_two_bufs.c                     | 295 ++++++++++++++++
 tests/spec/arb_transform_feedback3/xfb3_common.h   |  48 +++
 tests/spec/ext_transform_feedback/separate.c       |  37 +-
 tests/util/piglit-util-gl-common.h                 |   4 +
 tests/util/piglit-util-gl.c                        |  24 ++
 13 files changed, 1475 insertions(+), 29 deletions(-)
 create mode 100644 tests/spec/arb_transform_feedback3/CMakeLists.gl.txt
 create mode 100644 tests/spec/arb_transform_feedback3/CMakeLists.txt
 create mode 100644 tests/spec/arb_transform_feedback3/ext_interleaved_draw_streams.c
 create mode 100644 tests/spec/arb_transform_feedback3/ext_interleaved_single_gs_many_streams.c
 create mode 100644 tests/spec/arb_transform_feedback3/ext_interleaved_single_stream_many_buffers.c
 create mode 100644 tests/spec/arb_transform_feedback3/ext_interleaved_two_bufs.c
 create mode 100644 tests/spec/arb_transform_feedback3/xfb3_common.h

-- 
1.8.3.1