Suggested by Marek.
v2: Use new driver flag (Marek)
v3: Fix i965 comments (Lionel)
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Even if lower_txd_cube_map isn't. Suggested by Ken to make the flag more
consistent with its name.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This gets the lowering on the Vulkan driver too, which is required for
hardware that does not have the sample_l_d message (up to IvyBridge).
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This is ported from the Intel lowering pass that we use with GLSL IR.
This takes care of lowering texture gradients on shadow samplers other
than cube maps. Intel hardware requires this for gen < 8.
v2 (Ken):
- Use the helper function to retrieve ddx/ddy
- Swizzle away size components we are not interested in
v3:
- Get rid of the ddx/ddy helper and use nir_tex_instr_src_index
instead (Ken, Eric)
v4:
- Add a 'continue' statement if the lowering makes progress because it
replaces the original texture instruction
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org> (v3)
This is ported from the Intel lowering pass that we use with GLSL IR.
The NIR pass only handles cube maps, not shadow samplers, which are
also lowered for gen < 8 on Intel hardware. We will add support for
that in a later patch, at which point we should be able to remove
the GLSL IR lowering pass.
v2:
- added a helper to retrieve ddx/ddy parameters (Ken)
- No need to make size.z=1.0, we are only using component x anyway (Iago)
v3:
- Get rid of the ddx/ddy helper and use nir_tex_instr_src_index
instead (Ken, Eric)
v4:
- When emitting the textureLod operation, copy all texture parameters
from the original textureGrad() (except for ddx/ddy) using a loop
- Add a 'continue' statement if the lowering makes progress because it
replaces the original texture instruction
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org> (v3)
This was written specifically for RECT samplers. Make it more generic so
we can call this from the gradient lowerings too.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
git grep -l comparitor | xargs sed -i 's/comparitor/comparator/g'
Just happened to notice this in a patch that was sent and included one
of the tokens in question.
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Acked-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
In 19a541f (nir: Get rid of nir_constant_data) a number of places that
operated on nir_constant::values were mechanically converted to operate
on the whole array without regard for the base type. Only
GLSL_TYPE_FLOAT and GLSL_TYPE_DOUBLE can be matrices, so only those
types can have data in the non-0 array element.
See also b870394.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
Cc: Iago Toral Quiroga <itoral@igalia.com>
We shouldn't ever see a SEL with conditional mod other than GE (for max)
or L (for min), but we might see one with predication and no conditional
mod.
total instructions in shared programs: 8241806 -> 8241902 (0.00%)
instructions in affected programs: 13284 -> 13380 (0.72%)
HURT: 62
total cycles in shared programs: 84165104 -> 84166244 (0.00%)
cycles in affected programs: 75364 -> 76504 (1.51%)
helped: 10
HURT: 34
Fixes generated code in at least Sanctum 2, Borderlands 2, Goat
Simulator, XCOM: Enemy Unknown, and Shogun 2.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92234
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
We can hardcode all of the fields for swizzling in the geometry shader.
The advantage is that we use fewer descriptor slots and we no longer have to
update any of the (ring) descriptors when the geometry shader changes.
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Note that the memory layout of one vertex stream inside one "item" (= memory
written by one GS wave) on the GSVS ring is:
t0v0c0 ... t15v0c0 t0v1c0 ... t15v1c0 ... t0vLc0 ... t15vLc0
t0v0c1 ... t15v0c1 t0v1c1 ... t15v1c1 ... t0vLc1 ... t15vLc1
...
t0v0cL ... t15v0cL t0v1cL ... t15v1cL ... t0vLcL ... t15vLcL
t16v0c0 ... t31v0c0 t16v1c0 ... t31v1c0 ... t16vLc0 ... t31vLc0
t16v0c1 ... t31v0c1 t16v1c1 ... t31v1c1 ... t16vLc1 ... t31vLc1
...
t16v0cL ... t31v0cL t16v1cL ... t31v1cL ... t16vLcL ... t31vLcL
...
t48v0c0 ... t63v0c0 t48v1c0 ... t63v1c0 ... t48vLc0 ... t63vLc0
t48v0c1 ... t63v0c1 t48v1c1 ... t63v1c1 ... t48vLc1 ... t63vLc1
...
t48v0cL ... t63v0cL t48v1cL ... t63v1cL ... t48vLcL ... t63vLcL
where tNN indicates the thread number, vNN the vertex number (in the order of
EMIT_VERTEX), and cNN the output component (vL and cL are the last vertex and
component, respectively).
The vertex streams are laid out sequentially.
The swizzling by 16 threads is hard-coded in the way the VGT generates the
offset passed into the GS copy shader, and the jump every 16 threads is
calculated from VGT_GSVS_RING_OFFSET_n and VGT_GSVS_RING_ITEMSIZE in a way
that makes it difficult to deviate from this layout (at least that's what
I've experimentally confirmed on VI after first trying to go the simpler
route of just interleaving the vertex streams).
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
SimplifyCFG generates a switch instruction anyway when all four streams
are present, but is simultaneously not smart enough to eliminate some
redundant jumps that it generates.
The generated assembly is still a bit silly, probably because the
control flow annotation doesn't know how to handle a switch with uniform
condition.
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
When running the copy shader for vertex streams != 0, the SX does not need
any data from us (there is no rasterization for the higher vertex streams,
only streamout).
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This affects for GS copy shaders. When an output is meant for vertex
stream != 0, then we don't have to make it available to the pixel
shader.
There is a minor inefficiency here because the GLSL varying packing pass
does not group varyings of the same vertex stream together, but it
shouldn't be important in practice.
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Vertex emits beyond the specified maximum number of vertices are supposed to
have no effect, which is why we used to always kill GS that reached the limit.
However, if the GS also writes to memory (SSBO, atomics, shader images), then
we must keep going and only skip the vertex emit itself.
Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This is for geometry shader outputs. Without it, drivers have no way of
knowing which stream each output is intended for, and have to
conservatively write all outputs to all streams.
Separate stream numbers for each component are required due to output
packing.
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
As per the C spec, it is illegal to alias pointers to different
types. This results in undefined behaviour after optimization
passes, resulting in very subtle bugs that happen only on a
full moon..
Use a memcpy() as a well defined coercion between the double
to uint64_t interpretations of the memory.
V.2: Use static_assert() instead of assert().
V.3: Use C99 compat STATIC_ASSERT() over C11 static_assert().
Signed-off-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Acked-by: Dave Airlie <airlied@redhat.com>
