gallium/auxiliary: Prefer intrinsics to handrolled atomic ops for Linux (v2)

v2: prefer intrinsics only on Linux to avoid compilation problems
    on other platforms [1].

We need this patch, because Gallium Nine use directly intrinsics.
Otherwise build fails.

[1] https://bugs.freedesktop.org/show_bug.cgi?id=30514

Signed-off-by: David Heidelberger <david.heidelberger@ixit.cz>
configure: add configurable pipe-driver location

This option gives better flexibility when using gallium pipe drivers.

Signed-off-by: David Heidelberger <david.heidelberger@ixit.cz>
gallium/auxiliary: add inc and dec alternative with return

They're useful for Gallium Nine.

Signed-off-by: David Heidelberger <david.heidelberger@ixit.cz>
gallium/auxiliary: add contained and rect checks (v2)

v2: thanks to Bruno Jimenez, fixed for() in u_box_clip_3d

For D3D9 is very important have handled intersections and covers.

Signed-off-by: David Heidelberger <david.heidelberger@ixit.cz>
gallium/auxiliary: add dump functions for Nine

For debugging purposes of Gallium Nine.

Signed-off-by: David Heidelberger <david.heidelberger@ixit.cz>
nine: Add state tracker nine for Direct3D9

Work of Joakim Sindholt (zhasha) and Christoph Bumiller (chrisbmr).
DRI3 port done by Axel Davy (mannerov).

Signed-off-by: David Heidelberger <david.heidelberger@ixit.cz>
nine: Add drirc options

This allow forcing VSYNC and setting throttling to find optimal ratio
between framerate and input lag.

Reviewed-by: David Heidelberger <david.heidelberger@ixit.cz>
Signed-off-by: Axel Davy <axel.davy@ens.fr>
nine: Implement threadpool

DRI_PRIME setups have different issues due the lack of dma-buf fences
support in the drivers. For DRI3 DRI_PRIME, a race can appear, making
tearings visible, or worse showing older content than expected. Until
dma-buf fences are well supported (and by all drivers), an alternative
is to send the buffers to the server only when rendering has finished.
Since waiting the rendering has finished in the main thread has a
performance impact, this patch uses an additional thread to offload the
wait and the sending of the buffers to the server.

Signed-off-by: Axel Davy <axel.davy@ens.fr>
ilo: Advertise DMA-BUF
nvc0: define numbers, make code better readable

Signed-off-by: David Heidelberger <david.heidelberger@ixit.cz>
nvc0: use API settings / rasterization rules

Implement D3D9 infrastructure inside NVC0.

Signed-off-by: David Heidelberger <david.heidelberger@ixit.cz>
nv50,nvc0: handle TGSI_PROPERTY_VS_WINDOW_SPACE_POSITION

Allow viewport bypass used by D3D9 applications.
nv50,nvc0: handle NULL vertex elements without fallback

This makes Gallium Nine faster.
nv50/ir/tgsi: implement TGSI_OPCODE_NRM,DP2A

Used by d3d9 st.
hack/nv50: don't emit buffer for skipped vertex elements

Grr, should forbid that and insert dummy elements in nine.
hack/nvc0: avoid fault in get_query_result if there was no begin_query
nv50: support for hackish viewport bypass
nv50,nvc0: d3d9 requires transfer stride to be aligned to 4
gallium: add blending to pipe blit

Following nouveau commit make use of these.

Signed-off-by: David Heidelberger <david.heidelberger@ixit.cz>
nvc0: use blending to pipe blit