| Commit message (Collapse) | Author | Age | Files | Lines |
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Signed-off-by: Chris Forbes <[email protected]>
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Fixes the piglit test: spec/glsl-es-3.00/compiler/undef-GL_ES.vert
Signed-off-by: Chris Forbes <[email protected]>
Reviewed-by: Anuj Phogat <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
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This was an oversight in the original patch. When PolygonMode is
used, then front faces, back faces, or both may be rendered as
points and are affected by point sprite state.
Note that SNB/IVB can't actually be fully conformant here, for
a legacy context -- we don't have separate sets of pointsprite
enables for front and back faces. Haswell ignores pointsprite
state correctly in hardware for non-point rasterization, so can
do this correctly, but it doesn't seem worth it.
Signed-off-by: Chris Forbes <[email protected]>
Cc: "10.4" <[email protected]>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=86764
Reviewed-by: Matt Turner <[email protected]>
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Dead code elimination was eating the Y offset.
Fixes the piglit test:
spec/ARB_gpu_shader5/arb_gpu_shader5-interpolateAtOffset-nonconst
Signed-off-by: Chris Forbes <[email protected]>
Reviewed-by: Jason Ekstrand <[email protected]>
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Signed-off-by: Chris Forbes <[email protected]>
Reviewed-by: Jason Ekstrand <[email protected]>
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The original idea was to optimize away the condition by integrating it directly
into the CMP instruction. However, with native integers this requires an extra
I2F instruction. It is also fishy because the negation used didn't really honor
ieee754 float comparison rules, not to mention the CMP instruction itself
(being pretty much a legacy instruction) doesn't really have defined special
float value behavior in any case.
So, use UCMP and adjust the code trying to optimize the condition away
accordingly (I have absolutely no idea if such conditions are actually hit
or would be translated away somewhere else already).
v2: cosmetic changes
No piglit regressions on llvmpipe.
Reviewed-by: Jose Fonseca <[email protected]>
Reviewed-by: Brian Paul <[email protected]>
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Multiple scenes per context are meant to be used so a new scene can be built
while another one is processed in rasterization. However, quite surprisingly,
this does not actually work (and according to git log, possibly never did,
though maybe it did at some point further back (5 years+) but was buggy)
because we always wait immediately on the rasterizer to finish the scene when
contexts (and hence setup/scene) is flushed. This means when we try to get
an empty scene later, any old one is already empty again.
Thus using multiple scenes is just a waste of memory (not too bad, since the
additional scenes are guaranteed to be empty, which means their size ought to
be one data block (64kB) plus the size of some structs), without actually
really doing anything. (There is also quite some code for the whole concept of
multiple scenes which doesn't really do much in practice, but keep it hoping
the wait-on-scene-flush can be fixed some day.)
Reviewed-by: Jose Fonseca <[email protected]>
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The prim assembler may change the prim type when injecting prim ids now,
which isn't reflected by what's stored in emit.
This looks brittle and potentially dangerous (it is not obvious if such prim
type changes are really supported by pt emit, the prim type is actually also
set in prepare which would then be different).
This fixes piglit primitive-id-no-gs-first-vertex.shader_test.
Reviewed-by: Jose Fonseca <[email protected]>
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The decomposition done in the prim assembler will turn tri fans into tris,
but this wasn't reflected in the output prim type. Meaning with a tri fan
with 6 verts input, the output was a tri fan with 12 vertices instead of a
tri list with 12 vertices (not as bad as it sounds, since the additional tris
created would all be degenerate since they'd all have two times vertex zero
but still bogus).
This is because the prim assembler is used if either the input topology is
something with adjacency, or if prim id needs to be injected, and for the
latter case topologies without adjacency can be converted to basic ones.
Unfortunately decomposition here for inserting prim ids is necessary, at
least for the indexed case where we can't just insert the prim id at the
right place depending on provoking vertex.
Reviewed-by: Jose Fonseca <[email protected]>
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The default macros when the adjacency macros aren't defined will already
exactly do that (that is, drop the adjacent vertices and call the non-adjacent
macro).
Reviewed-by: Jose Fonseca <[email protected]>
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The opcode was removed alongside SFL by commit
ecfe9e2ad2b5f178ef09420f8d95d49937137cd9.
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Safe from causing optimization loops, since we don't constant propagate
VF arguments.
(for this and the previous patch):
total instructions in shared programs: 4289075 -> 4271932 (-0.40%)
instructions in affected programs: 1616779 -> 1599636 (-1.06%)
Reviewed-by: Ian Romanick <[email protected]>
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The LINE instruction performs a multiply-add instruction (a * b + c)
where b and c are scalar arguments. It reads b and c from offsets in
src0 such that you can load them (it they're representable) as a
vector-float immediate with a single instruction.
Hurts some programs, but that'll all get better once we CSE the
vector-float MOVs in the next patch.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=77544
Reviewed-by: Ian Romanick <[email protected]>
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Reviewed-by: Ian Romanick <[email protected]>
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The PRMs say that
<src0> region must be a replicated scalar
(with HorzStride = VertStride = 0).
but apparently that doesn't actually apply to all generations. I did
notice when implementing the optimization later in this series that G45
and ILK needed this regioning.
Reviewed-by: Ian Romanick <[email protected]>
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Reviewed-by: Ian Romanick <[email protected]>
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Reviewed-by: Eric Anholt <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
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total instructions in shared programs: 56995 -> 56087 (-1.59%)
instructions in affected programs: 40503 -> 39595 (-2.24%)
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No difference on shader-db because we tend to have a lot of other
conflicts going on as well (like RADDR_A disagreements)
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The GS has an interesting use for mul. Because the GS can emit multiple
vertices per input vertex, and it also has a unique count at the top of the URB
payload, the GS unit needs to be able to dynamically specify URB write offsets
(relative to the global offset). The documentation in the function has a very
good explanation from Paul on the mechanics.
This fixes around 2000 piglit tests on BSW.
v2:
Reworded commit message (Ben) no mention of CHV (Matt)
Change SHRT_MAX to USHRT_MAX (Ken, and Matt)
Update comment in code to reflect the use of UW (Ben)
Add Gen7+ assertion for the relevant GS code, since it won't work on Gen6- (Ken)
Drop the bogus hunk in emit_control_data_bits() (Ken)
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=84777 (with many dupes)
Cc: "10.4 10.3 10.2" <[email protected]>
Signed-off-by: Ben Widawsky <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
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If an operation is the last one to read a register, the instruction
containing it can also include the op that has the next write to that
register.
total instructions in shared programs: 57486 -> 56995 (-0.85%)
instructions in affected programs: 43004 -> 42513 (-1.14%)
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We were scheduling TLB operations as early as possible, and texture setup
as late as possible. When I introduced prioritization, I visually
inspected that an independent operation got moved above texture results
collection, which tricked me into thinking it was working (but it was just
because texture setup was being pushed late).
total instructions in shared programs: 57651 -> 57486 (-0.29%)
instructions in affected programs: 18532 -> 18367 (-0.89%)
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Avoids assertion failures in vc4_qpu_validate.c if we happen to find the
right set of operations available.
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This might happen if the blending functions are set up to not actually use
the destination color/alpha, for example.
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This is nice when you're tracking down which command list is hanging the
GPU.
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This was supposed to be part of the previous commit.
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And move it above its first use in brw_fs_generator.cpp.
Reviewed-by: Jason Ekstrand <[email protected]>
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Jason realized that we could fix the result of the CMP instruction on
Gen <= 5 by doing -(result & 1). Also do the resolves in the vec4
backend before use, rather than when the bool was created. The FS does
this and it saves some unnecessary resolves.
On Ironlake:
total instructions in shared programs: 4289762 -> 4287277 (-0.06%)
instructions in affected programs: 619430 -> 616945 (-0.40%)
Reviewed-by: Jason Ekstrand <[email protected]>
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This is a revert of commit 4656c14e ("i965/fs: Change the type of
booleans to UD and emit correct immediates") plus some small additional
fixes, like casting ctx->Const.UniformBooleanTrue to int and changing UD
to D in the ir_unop_b2f cases. Note that it's safe to leave 0x3f800000
as UD and as a literal it's more recognizable than 1065353216.
Reviewed-by: Jason Ekstrand <[email protected]>
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Reviewed-by: Jason Ekstrand <[email protected]>
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Reviewed-by: Jason Ekstrand <[email protected]>
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Three source instructions cannot directly source a packed vec4 (<0,4,1>
regioning) like vec4 uniforms, so we emit a MOV that expands the vec4 to
both halves of a register.
If these uniform values are used by multiple three-source instructions,
we'll emit multiple expansion moves, which we cannot combine in CSE
(because CSE emits moves itself).
So emit a virtual instruction that we can CSE.
Sometimes we demote a uniform to to a pull constant after emitting an
expansion move for it. In that case, recognize in opt_algebraic that if
the .file of the new instruction is GRF then it's just a real move that
we can copy propagate and such.
total instructions in shared programs: 5822418 -> 5812335 (-0.17%)
instructions in affected programs: 351841 -> 341758 (-2.87%)
Reviewed-by: Kenneth Graunke <[email protected]>
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Cuts an instruction from two shaders in Tesseract, by allowing the
(x+y) cmp 0 -> x cmp -y optimization to take place.
instructions in affected programs: 1198 -> 1194 (-0.33%)
Reviewed-by: Eric Anholt <[email protected]>
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Nowadays GCC assumes stack pointer is 16-byte aligned even on 32-bits,
but that is an assumption OpenGL drivers (or any dynamic library for
that matter) can't afford to make as there are many closed- and open-
source application binaries out there that only assume 4-byte stack
alignment.
This fix uses force_align_arg_pointer GCC attribute, and is only a
stop-gap measure.
The right fix would be to pass -mstackrealign or
-mincoming-stack-boundary=2 to all source fails that use any -msse*
option, as there is no way to guarantee if/when GCC will decide to spill
SSE registers to the stack.
https://bugs.freedesktop.org/show_bug.cgi?id=86788
Reviewed-by: Brian Paul <[email protected]>
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Matches what u_vbuf_get_minmax_index() does.
Reviewed-by: Ilia Mirkin <[email protected]>
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Signed-off-by: Ilia Mirkin <[email protected]>
Cc: "10.4 10.3" <[email protected]>
Reviewed-by: Brian Paul <[email protected]>
Reviewed-by: Rob Clark <[email protected]>
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Signed-off-by: Ilia Mirkin <[email protected]>
Cc: "10.3 10.4" <[email protected]>
Reviewed-by: Brian Paul <[email protected]>
Reviewed-by: Rob Clark <[email protected]>
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The index_bias (aka base_vertex) applies to the downstream draw just as
much, since the actual index values are never modified.
Signed-off-by: Ilia Mirkin <[email protected]>
Cc: "10.3 10.4" <[email protected]>
Reviewed-by: Brian Paul <[email protected]>
Reviewed-by: Rob Clark <[email protected]>
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BRW_NEW_VERTICES is flagged every time we draw a primitive. Having
the brw_vs_prog atom depend on BRW_NEW_VERTICES meant that we had to
compute the VS program key and do a program cache lookup for every
single primitive. This is painfully expensive.
The workaround bit computation is almost entirely based on the vertex
attribute arrays (brw->vb.inputs[i]), which are set by brw_merge_inputs.
The only thing it uses the VS program for is to see which VS inputs are
actually read. brw_merge_inputs() happens once per primitive, and can
safely look at the currently bound vertex program, as it doesn't change
in the middle of a draw.
This patch moves the workaround bit computation to brw_merge_inputs(),
right after assigning brw->vb.inputs[i], and stores the previous WA bit
values in the context. If they've actually changed from the last draw
(which is uncommon), we signal that we need a new vertex program,
causing brw_vs_prog to compute a new key.
Improves performance in Gl32Batch7 by 13.6123% +/- 0.739652% (n=166)
on Haswell GT3e. I'm told Baytrail shows similar gains.
v2: Introduce a new BRW_NEW_VS_ATTRIB_WORKAROUNDS dirty bit, rather
than reusing BRW_NEW_VERTEX_PROGRAM (suggested by Chris Forbes).
This prevents unnecessary re-emission of surface/sampler related
atoms (and an SOL atom on Sandybridge).
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Chris Forbes <[email protected]>
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If you hit this, you didn't compile with --with-egl-platforms=...
Recompile with something like --with-egl-platforms=x11,drm and make
clean and make again.
Reviewed-by: Anuj Phogat <[email protected]>
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These stopped being necessary in commit ab973403e445cd8211dba4e87e0.
v2: Update commit message with a better explanation (thanks to Eric
Anholt for doing the git archaeology).
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
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We don't access brw->vertex_program or ctx->_Shader since the previous
commit, so we don't need this dirty bit.
I think it's still necessary on Gen6 because it still conflates
constant uploading with unit state uploading. We can fix that later.
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
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We use IEEE mode for GLSL programs, but need to use ALT mode for ARB
programs so that 0^0 == 1. The choice is based entirely on the shader
source language.
Previously, our code to determine which mode we wanted was duplicated
in 8 different places (VS and FS for Gen4-5, Gen6, Gen7, and Gen8).
The ctx->_Shader->CurrentProgram[stage] == NULL check was confusing
as well - we use CurrentProgram (non-derived state), but _Shader
(derived state). It also relies on knowing that ARB programs don't
use gl_shader_program structures today. The compiler already makes
this assumption in a few places, but I'd rather keep that assumption
out of the state upload code.
With this patch, we select the mode at compile time, and store that
choice in prog_data. The state upload code simply uses that decision.
This eliminates a BRW_NEW_*_PROGRAM dependency in the state upload code.
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
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Commit c0347705 changed the Gen6-7 code to use ctx->_Shader rather than
ctx->Shader, but neglected to change the Gen4-5 or Gen8+ code.
This might fix SSO related bugs, but ALT mode is only used for ARB
programs, so if there's an actual problem, it's likely no one would
run into it.
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
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The "Pixel Shader Computed Depth Mode" value is entirely based on the
shader program, so we can easily do it at compile time. This avoids the
if+switch on every 3DSTATE_WM (Gen7)/3DSTATE_PS_EXTRA (Gen8+) upload,
and shares a bit more code.
This also simplifies the PMA stall code, making it match the formula
more closely, and drops a BRW_NEW_FRAGMENT_PROGRAM dependency. (Note
that the previous comment was wrong - the code and the documentation
have != PSCDEPTH_OFF, not ==.)
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
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Similar to the scheme that Ilia put in place for a3xx.
Signed-off-by: Rob Clark <[email protected]>
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Signed-off-by: Rob Clark <[email protected]>
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Signed-off-by: Rob Clark <[email protected]>
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We shouldn't receive variables with invalid locations set - adding these
assertions should help catch problems before they cause crashes later.
Inspired by similar code in st_glsl_to_tgsi.
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
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Half gives you the second half of a SIMD16 register, but if the register
is a uniform it would incorrectly give you the next register.
Reviewed-by: Jason Ekstrand <[email protected]>
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