This will be reused in the following patch to add support for clip
vertex lowering in geometry shaders.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This will allow code sharing in a following patch that adds support
for lowering in geometry shaders. It also allows us to exit early
if there is no lowering to do which allows a small code tidy up.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This doesn't quite work yet, but it illustrates how MRT is implemented
in the MFBD: rt_count is set appropriately based on the number of render
targets, while additional render target descriptors are appended on with
an index variable in them (not quite decoded since there's some aspects
we don't understand there, but conceptually this should be right).
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
If tiler_heap_end == tiler_heap_start, ensure it's printed the same
rather than one erroring out as hex.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
There's no polygons, so you can't have any size to the polygon list,
although there is a minimal header.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Fixes a bunch of NULL dereferences, although it does cause GPU faults of
course.
This is caused by color buffers masked out in MRT, which we'll
eventually have to solve the right way... one thing at a time.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
128MB is excessive and 16MB is still plenty. Saves 112MB/context on
kernels without growable/heap support.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
If a function has a constant and is called more than once, after
inlining we may end up with different variables representing the same
constant. This commit look into the data and de-duplicate them.
The first pass now will collect the constant data in a per variable
buffer, then de-duplication happens (by sorting then linear walk), and
the second pass will use the data in var->data.location.
One side-effect of the current implementation is that constants will
be reordered. If this turns out to be a problem is something that can
be fixed.
An alternative strategy considered was to perform this in a
per-function basis and then merge the results, the problem is that we
would have to fix up the offsets during the merge. Given the data we
have, the current patch is good enough.
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This will be used later on to allocate constant data for each
variable (and then deduplicate). Also drop initializing found_read,
as it is already implicitly false in the literal.
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
v3d's NIR txf_ms lowering wants to swizzle around the input coordinates in
NIR, but doesn't generate a new txf_ms instructions as replacement. It's
pretty easy to allow that in nir_shader_lower_instructions, and it may be
common in lowering passes.
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
nir_lower_io leaves around deref_var instructions after lowering away
deref intrinsics. This ends up breaking validation after v3d_nir_lower_io
removes variables not actually being stored by the shader's
store_output()s.
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Z32F uses a dediacted float path. Z32F_S8 uses separate stencil planes
in the hardware, lowered via u_transfer_helper.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
It is legal to load a shader from a NULL address, particularly when the
TILER job is used strictly for effects on the Z/S buffer with 0x0 color
mask. Don't crash the decoder in this case.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
When backside stenciling is disabled, backfacing primitives just do the
same thing as frontfacing primitives.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
This commit cleans up API between the core of the rasterizer and swr.
Some formatting changes are also done.
Reviewed-by: Alok Hota <alok.hota@intel.com>
Treat gl_PointCoord as a system value and
add the necessary bits for correct codegen.
Signed-off-by: Andreas Baierl <ichgeh@imkreisrum.de>
Reviewed-by: Qiang Yu <yuq825@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
This adds an option to treat gl_PointCoord as a system value.
Signed-off-by: Andreas Baierl <ichgeh@imkreisrum.de>
Reviewed-by: Qiang Yu <yuq825@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
gl_PointCoord handling needs some special bits set in lima/ppir code
generation. Treating gl_PointCoord as a system value makes it easier
to distinguish from a regular varying.
Signed-off-by: Andreas Baierl <ichgeh@imkreisrum.de>
Reviewed-by: Qiang Yu <yuq825@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
When writing the scheduler, we forgot that you can't read the complex
unit in certain sources because it gets overwritten to 0 or 1. Fixing
this turned out to be possible without giving up and reducing
GPIR_VALUE_REG_NUM to 10, although it was difficult in a way I didn't
expect. There can be at most 4 next-max nodes that can't have moves
scheduled in the complex slot, so it actually isn't a problem for
getting the number of next-max nodes at 5 or lower. However, it is a
problem for stores. If a given node is a next-max node whose move cannot
go in the complex slot *and* is used by a store that we decide to
schedule, we have to reserve one of the non-complex slots for a move
instead of all the slots, or we can wind up in a situation where only
the complex slot is free and we fail the move. This means that we have
to add another term to the reservation logic, for stores whose children
cannot be in the complex slot.
Acked-by: Qiang Yu <yuq825@gmail.com>
Now, we do scheduling at the same time as value register allocation. The
ready list now acts similarly to the array of registers in
value_regalloc, keeping us from running out of slots. Before this, the
value register allocator wasn't aware of the scheduling constraints of
the actual machine, which meant that it sometimes chose the wrong false
dependencies to insert. Now, we assign value registers at the same time
as we actually schedule instructions, making its choices reflect reality
much better. It was also conservative in some cases where the new scheme
doesn't have to be. For example, in something like:
1 = ld_att
2 = ld_uni
3 = add 1, 2
It's possible that one of 1 and 2 can't be scheduled in the same
instruction as 3, meaning that a move needs to be inserted, so the value
register allocator needs to assume that this sequence requires two
registers. But when actually scheduling, we could discover that 1, 2,
and 3 can all be scheduled together, so that they only require one
register. The new scheduler speculatively inserts the instruction under
consideration, as well as all of its child load instructions, and then
counts the number of live value registers after all is said and done.
This lets us be more aggressive with scheduling when we're close to the
limit.
With the new scheduler, the kmscube vertex shader is now scheduled in 40
instructions, versus 66 before.
Acked-by: Qiang Yu <yuq825@gmail.com>
The location is unused for shader_temp and function_temp variables, and
due to the way we nir_lower_io_to_temproraries demotes shader_out
variables to shader_temp variables, it happened to equal
VARYING_SLOT_POS for the gl_Position temporary, which made this pass
fail with the offline compiler due to this coming before vars_to_ssa.
Reviewed-by: Qiang Yu <yuq825@gmail.com>
With NGG, empty waves may still be required to export data.
This fixes dEQP-VK.ycbcr.format.*_unorm.geometry_*.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Found by inspection.
Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
For per-sample color writes we need the output intrinsic to pack the
sample index, which is not provided with regular store_output intrinsics
unless we figured out a way to encode it into the base or the offset.
v2:
- Drop the writemask (Eric)
Reviewed-by: Eric Anholt <eric@anholt.net>
