Prevent infinite loops in shaders from locking up the GPU.

Always set position to insert before the current instruction,
the previous behaviour led to confusion (bug in checkPredicate
for BBs with only a single conditional branch).

Conflicts:
	src/gallium/auxiliary/tgsi/tgsi_strings.c
	src/mesa/state_tracker/st_atom_clip.c

commit d919791f27
Author: Christoph Bumiller <e0425955@student.tuwien.ac.at>
Date:   Fri Jan 6 17:59:22 2012 +0100

    d3d1x: adapt to new clip state

commit cfec82bca3
Author: Christoph Bumiller <e0425955@student.tuwien.ac.at>
Date:   Fri Jan 6 14:16:51 2012 +0100

    gallium/docs: update for clip state changes

commit c02bfeb81a
Author: Christoph Bumiller <e0425955@student.tuwien.ac.at>
Date:   Fri Jan 6 14:21:43 2012 +0100

    tgsi: add TGSI_PROPERTY_PROHIBIT_UCPS

commit d4e0a785a6
Author: Brian Paul <brianp@vmware.com>
Date:   Thu Jan 5 08:30:00 2012 -0700

    tgsi: consolidate TGSI string arrays in new tgsi_strings.h

    There was some duplication between the tgsi_dump.c and tgsi_text.c
    files.  Also use some static assertions to help catch errors when
    adding new TGSI values.

    v2: put strings in tgsi_strings.c file instead of the .h file.

    Reviewed-by: Dave Airlie <airlied@redhat.com>

commit c28584ce0d
Author: Christoph Bumiller <e0425955@student.tuwien.ac.at>
Date:   Fri Jan 6 12:48:09 2012 +0100

    gallium: extend user_clip_plane_enable to apply to clip distances

commit f1d5016c07
Author: Marek Olšák <maraeo@gmail.com>
Date:   Fri Jan 6 02:39:09 2012 +0100

    nvfx: adapt to new clip state

commit 6f6fa1c26b
Author: Marek Olšák <maraeo@gmail.com>
Date:   Fri Jan 6 01:41:39 2012 +0100

    st/mesa: fix DrawPixels with GL_DEPTH_CLAMP

commit c86ad730aa
Author: Christoph Bumiller <e0425955@student.tuwien.ac.at>
Date:   Tue Jan 3 23:51:30 2012 +0100

    nv50: adapt to new clip state

commit 3a8ae6ac24
Author: Christoph Bumiller <e0425955@student.tuwien.ac.at>
Date:   Tue Jan 3 23:32:36 2012 +0100

    nvc0: adapt to new clip state

commit 6243a82469
Author: Marek Olšák <maraeo@gmail.com>
Date:   Thu Dec 29 01:32:51 2011 +0100

    draw: initalize pt.user.planes in draw_init

    This fixes a crash in glean/fpexceptions.

commit e3056524b1
Author: Marek Olšák <maraeo@gmail.com>
Date:   Mon Dec 26 06:26:55 2011 +0100

    svga: adapt to new clip state

commit c5bfa8b37d
Author: Marek Olšák <maraeo@gmail.com>
Date:   Sun Dec 25 14:11:51 2011 +0100

    r600g: adapt to new clip state

commit f118909053
Author: Marek Olšák <maraeo@gmail.com>
Date:   Sun Dec 25 14:10:26 2011 +0100

    r300g: adapt to new clip state

commit e37465327c
Author: Marek Olšák <maraeo@gmail.com>
Date:   Sun Dec 25 12:39:16 2011 +0100

    draw: adapt to new clip state

    This adds a regression in the LLVM clipping path. Can anybody see anything
    wrong with the code? It works for every other case, just glean/fpexceptions
    crashes when doing the "Infinite clip plane test".

commit b474d2b18c
Author: Marek Olšák <maraeo@gmail.com>
Date:   Sun Dec 25 13:14:59 2011 +0100

    u_blitter: don't save/set/restore clip state

commit 9dd240ea91
Author: Marek Olšák <maraeo@gmail.com>
Date:   Sun Dec 25 13:11:56 2011 +0100

    gallium: don't cso_save/set/restore clip state

    The enable bits are in the rasterizer state.

commit a4f7031179
Author: Marek Olšák <maraeo@gmail.com>
Date:   Sun Dec 25 12:58:55 2011 +0100

    gallium: default depth_clip to 1

    depth_clip = !depth_clamp

commit fe21147a00
Author: Marek Olšák <maraeo@gmail.com>
Date:   Mon Dec 26 06:14:19 2011 +0100

    trace,util: update state logging to new clip state

    Also dump the other missing flags.

commit 2a3b96e84a
Author: Marek Olšák <maraeo@gmail.com>
Date:   Sun Dec 25 10:43:43 2011 +0100

    st/mesa: adapt to new clip state

commit b7b656a42f
Author: Marek Olšák <maraeo@gmail.com>
Date:   Sat Dec 17 15:45:19 2011 +0100

    gallium: move state enable bits from clip_state to rasterizer_state

This brings the code in sync with gen6_sf_state.c; presumably the
mistake was a botched rebase on initial Ivybridge bring-up patches.

Found by diffing batch buffer dumps and noticing the random values.
Thanks to Eric for catching the obvious mistake.

NOTE: This is a candidate for the 7.11 branch.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>

In f3e9ccb3b, I renamed gen6_upload_wm_constants to
gen6_upload_wm_push_constants, but neglected to update this comment.

I don't think there ever was a gen7_prepare_wm_constants function; it
was probably a search and replace error.  Of course, "prepare" functions
died a while back as well.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>

CACHE_NEW_SAMPLER doesn't cover max_wm_threads, but it does cover
brw->sampler.count.  BRW_NEW_PS_BINDING_TABLE is obvious, but it's
probably worth adding a comment anyway.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>

The dirty bit was already correctly in place, but there was no comment.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>

Also, annotate the use of _NEW_POINT as long as we're adding a comment.

NOTE: This is a candidate for the 7.11 branch.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>

According to a comment in gen6_sf_state, calls to get_attr_override need
both _NEW_PROGRAM and _NEW_LIGHT.  Since Gen7 reuses the same function,
the same dirty bits should apply.

NOTE: This is a candidate for the 7.11 branch.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>

The BRW_NEW_CURBE_OFFSETS dirty bit is only flagged by the
brw_curbe_offsets state atom which is only used on Gen4-5.

Since it's never flagged, there's no reason to depend on it.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>

The BRW_NEW_URB_FENCE dirty bit is only flagged by the
brw_recalculate_urb_fence state atom which isn't used on Gen6+.

Since it's never flagged, there's no reason to depend on it.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>

This brings the dirty bits in line with the comments.

This does /not/ need to be cherry-picked to stable branches because the
access requiring _NEW_BUFFERS was added in master as part of HiZ.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>

The trick was to produce an assignment in the IR along the lines of:

      (assign  (xyzw) (var_ref R0)  (swiz wwww (var_ref R0) ))

which occurs only rarely even in code that looks like it should do
this, because of the assignment temporaries generated in ast_to_hir.

From the IR above, this optimization pass would then propagate
references of R0 into R0.wwww (seems reasonable), but without this
patch, a later reference of R0.wwww would see R0 first, turning that
into R0.wwww.wwww, which triggered opt_swizzle_swizzle, and then we
looped back to this code to do it again.  Avoid that by skipping over
the usual ir_rvalue visitor's ir_swizzle hook, so that we get
handle_rvalue() on the ir_swizzle itself, not its referenced value.
Looking at only the swizzle will always optimize away at least as much
as looking at the swizzle's refererenced value.

We now still claim to propagate r0.w into r0.w, but at least we don't
trigger the loop.

v2: Rewrite commit message (changes by anholt)

Fixes piglit glsl-copy-propagation-self-1
Fixes https://bugs.freedesktop.org/show_bug.cgi?id=34006

Signed-off-by: Jakob Bornecrantz <wallbraker@gmail.com>

But add a option to force it on for testing.

Signed-off-by: Jakob Bornecrantz <wallbraker@gmail.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

The r300 driver requires LLVM when building and other drivers that
depend on it for all TNL, like i915g will be a lot slower without it.

Signed-off-by: Jakob Bornecrantz <wallbraker@gmail.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

Signed-off-by: Jakob Bornecrantz <wallbraker@gmail.com>
Reviewed-by: Brian Paul <brianp@vmware.com>

Also update the release notes to mention that Mesa 8.0 implements
OpenGL 3.0.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>

Signed-off-by: Jerome Glisse <jglisse@redhat.com>

The optimization was supposed to turn an attribute component that was
always 1.0 into a mov of 1.0.  But by leaving loop this patch removes
out of that test, we applied the projection correction to the 1.0 and
got some other value, breaking openarena once it was converted to
using the new compiler backend.

Originally this hunk was separate from the former loop to make the
generated instructions slightly better pipelined.  We now have
automatic instruction scheduling to handle that, and the generated
instruction sequence looked the same to me after this change (except
for the bugfix).

Acked-by: Kenneth Graunke <kenneth@whitecape.org>

Previous to this patch, if the client requested transform feedback
using a subscript, but the variable was not an array
(e.g. "gl_FrontColor[0]"), we would produce a bogus error message like
"Transform feedback varying gl_FrontColor[0] found, but it's an array
([] expected)".

Changed the error message to e.g. "Transfrorm feedback varying
gl_FrontColor[0] requested, but gl_FrontColor is not an array."

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

We were only comparing the number of depth and stencil bits but the
extension spec actually says the formats must match:

    The error INVALID_OPERATION is generated if BlitFramebufferEXT is
    called and <mask> includes DEPTH_BUFFER_BIT or STENCIL_BUFFER_BIT
    and the source and destination depth or stencil buffer formats do
    not match.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

Reviewed-by: Eric Anholt <eric@anholt.net>

Reviewed-by: Eric Anholt <eric@anholt.net>

Since it returns uint values, not int.

Reviewed-by: Eric Anholt <eric@anholt.net>

Based on patches from Maarten Lankhorst <m.b.lankhorst@gmail.com>

Signed-off-by: Christian König <deathsimple@vodafone.de>
Acked-by: Maarten Lankhorst <m.b.lankhorst@gmail.com>

Commit acf82657f4 supposedly enabled
SIMD16 dispatch, but neglected to set the "16 Pixel Dispatch Enable"
bit, so nothing actually got enabled.

Furthermore, it neglected to set up the Dispatch GRF Start Register for
kernel 2, which is the SIMD16 program.

Increases performance in Nexuiz by ~15% at 800x600 (n=3).

NOTE: This is a candidate for the 7.11 branch.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>

Using the proper spelling, _NEW_TRANSFORM, makes searching work better.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>

$ dict invarient
No definitions found for "invarient", perhaps you mean:
gcide:  Invariant
wn:  invariant

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>

Replace target, level parameters with gl_texture_image.
Add gl_renderbuffer parameter to indicate source buffer for the copy.

This removes some redundant code in the drivers to find the source
renderbuffer and the destination texture image (which we already had
in _mesa_CopyTexSubImage).

Signed-off-by: Brian Paul <brianp@vmware.com>

This is a necessary operation that is missing from TGSI.

Reviewed-by: Brian Paul <brianp@vmware.com>

We use 0xffffffff for true, but visit(ir_constant *) was emitting 1.

We were comparing 32-bit Z buffer values against 16-bit fragment values.
Need to do scaling like for the 24-bit case.

Triangle Z testing was OK since it didn't hit this code path.

This is a bitfield of FRAG_BIT_x values so it should be 64-bits now.