freedreno/ir3: add no-copy-propagate fallback step

Most of the things the new compiler still has trouble with basically
amount to cp stage removing too many copies.  But without the cp stage,
the shaders the new compiler produces are still better (perf and
correctness) than the old compiler.  So a simple thing to do until I
have more time to work on it is first trying falling back to new
compiler without cp, before finally falling back to old compiler.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
freedreno: don't overflow cmdstream buffer so much

We currently aren't too clever about dealing with running out of
cmdstream buffer space.  Since we use a single buffer for both drawing
and tiling commands, we need to ensure there is enough space at the tail
of the cmdstream buffer to fit the tiling commands.

Until we get more clever, the easy solution is a threshold to trigger
flushing rendering even if the application does not trigger flush (swap,
changing render target, etc).  This way we at least don't crash for apps
that do several thousand draw calls (like some piglit tests do).

Signed-off-by: Rob Clark <robclark@freedesktop.org>
freedreno/ir3: fix potential segfault in RA

Triggered by shaders like:

  FRAG
  PROPERTY FS_COLOR0_WRITES_ALL_CBUFS 1
  DCL OUT[0], COLOR
  DCL CONST[0]
  DCL TEMP[0..2], LOCAL
    0: IF CONST[0].xxxx :0
    1:   MOV TEMP[0], TEMP[1]
    2: ELSE :0
    3:   MOV TEMP[0], TEMP[2]
    4: ENDIF
    5: MOV OUT[0], TEMP[0]
    6: END

not really a sane shader, although driver segfaulting is probably
not the appropriate response.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
freedreno: update generated headers

Signed-off-by: Rob Clark <robclark@freedesktop.org>
freedreno/a3xx: enable hw primitive-restart

Since software primitive-restart emulation is going to be removed (and
anyways, mostly seemed to be crash prone in combination with
u_primconvert and oddball scenarios (like PIPE_PRIM_POLYGON with only a
single vertex), might as well do it in hardware (which fortunately
didn't turn out to be too hard to figure out).

Signed-off-by: Rob Clark <robclark@freedesktop.org>
r600g,radeonsi: Set RADEON_GEM_NO_CPU_ACCESS flag for tiled BOs

This lets the kernel know that such BOs can be pinned outside of the CPU
accessible part of VRAM.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
vc4: The r4_count is supposed to be how many writes, not reads.

It's part of the key so that you can tell which r4 value is being read.
vc4: Drop pointless raddr conflict handling on SF.

SF doesn't have a src[1].
vc4: Expose r4 to register allocation.

We potentially need to be careful that use of a value stored in r4 isn't
copy-propagated (or something) across another r4 write.  That doesn't
appear to happen currently, and this makes the dataflow more obvious.  It
also opens up not unpacking the r4 value, which will be useful for depth
textures.
vc4: Add support for depth texturing.
vc4: Move the texture format into a struct.

I'm going to be putting some bitfields into the struct as well.
vc4: Add support for texture swizzles.

Fixes depth-tex-modes.
vc4: Add support for shadow samplers.

This doesn't quite make depth-tex-compare work, presumably because we're
not hitting equality with itof(sample) * 1.0/0xffffff in the 0xffffff
case.  arb_fragment_program_shadow tests pass, though, as well as a bunch
of other shadow-related stuff.
configure.ac: unbreak the build with non gnu grep

181581280bd430d122d416e308c1de82db82da04 changed the way the
llvm-config version is read from sed to grep and introduced
a requirement for gnu grep extension that treats BREs as EREs.

Avoid this by calling egrep instead of grep which should be
able to handle EREs everywhere.

This allows Mesa to build on OpenBSD again.

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
mesa: Document SYSTEM_VALUE_VERTEX_ID and SYSTEM_VALUE_INSTANCE_ID

v2: Additions to the documentation for SYSTEM_VALUE_VERTEX_ID.  Quote
the GL_ARB_shader_draw_parameters spec and mention DirectX SV_VertexID.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
mesa: Add SYSTEM_VALUE_VERTEX_ID_ZERO_BASE

There exists hardware, such as i965, that does not implement the OpenGL
semantic for gl_VertexID.  Instead, that hardware does not include the
value of basevertex in the gl_VertexID value.
SYSTEM_VALUE_VERTEX_ID_ZERO_BASE is the system value that represents
this semantic.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
mesa: Add SYSTEM_VALUE_BASE_VERTEX

This system value represents the basevertex value passed to
glDrawElementsBaseVertex and related functions.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
glsl/linker: Make get_main_function_signature public

The next patch will use this function in a different file.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
glsl: Add a lowering pass for gl_VertexID

Converts gl_VertexID to (gl_VertexIDMESA + gl_BaseVertex). gl_VertexIDMESA
is backed by SYSTEM_VALUE_VERTEX_ID_ZERO_BASE, and gl_BaseVertex is backed
by SYSTEM_VALUE_BASE_VERTEX.

v2: Put the enum in struct gl_constants and propoerly resolve the scope
in C++ code.  Fix suggested by Marek.

v3: Reabase on Matt's foreach_in_list changes (was using foreach_list).

v4 (Ken): Use a systemvalue instead of a uniform because
STATE_BASE_VERTEX has been removed.

v5: Use a boolean to select lowering, and only allow one lowering
method.  Suggested by Ken.

v6 (Ken): Replace strcmp against literal "gl_BaseVertex"/"gl_VertexID"
with SYSTEM_VALUE enum checks, for efficiency.

v7: Rebase on context constant initialization work.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
mesa: Replace string comparisons with SYSTEM_VALUE enum checks.

This is more efficient.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>