The rules are about to get a bit more complex to account for
gl_InstanceID and gl_VertexID, which are system values.
Extracting this first avoids introducing duplication.
Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
glClearBuffer() is currently clearing all active draw color buffers (all
buffers that have not been set to GL_NONE when calling glDrawBuffers) instead
of only clearing the one it receives as parameter. Altough brw_clear()
receives a bit mask indicating the color buffers that should be cleared,
this mask is ignored when calling brw_blorp_clear_color().
This was breaking the 'fbo-drawbuffers-none glClearBuffer' piglit test.
The patch provides the bit mask to brw_blorp_clear_color() so it can limit
clearing to the color buffers present in the mask.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=76832
Reviewed-by: Eric Anholt <eric@anholt.net>
This always looks crazy when I stumble across it, until I remember
what the hardware is doing. Describing it ought to short-circuit
that process next time :)
V2: Fix indents to 6 spaces, not 7.
Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Many shaders use a pattern such as:
for (int i = 0; i < NUM_LIGHTS; i++) {
...access a uniform array, or shader input/output array...
}
where NUM_LIGHTS is a small constant (such as 2, 4, or 8).
The expectation is that the compiler will unroll those loops, turning
the array access into constant indexing, which is more efficient, and
which may enable array splitting and other optimizations.
In many cases, our heuristic fails - either there's another tiny nested
loop inside, or the estimated number of instructions is just barely
beyond the threshold. So, we fail to unroll the loop, leaving the
variable indexing in place.
Drivers which don't support the particular flavor of variable indexing
will call lower_variable_index_to_cond_assign(), which generates piles
and piles of immensely inefficient code. We'd like to avoid generating
that.
This patch detects unsupported forms of variable-indexing in loops, where
the array index is a loop induction variable. In that case, it bypasses
the loop-too-large heuristic and forces unrolling.
Improves performance in various microbenchmarks: Gl32PSBump8 by 47%,
Gl32ShMapVsm by 80%, and Gl32ShMapPcf by 27%. No changes in shader-db.
v2: Check ir->array for being an array or matrix, rather than the
ir_dereference_array itself.
v3: Fix and expand statistics in commit message.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
The "fail" flag is set if loop_unroll_count encounters a nested loop;
calling the flag "nested_loop" is a bit clearer.
The original reasoning was that count is inaccurate (too small) if there
are nested loops, as we don't do any sort of analysis on the inner loop.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Loop unrolling will need to know a few more options in the future.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Now that we pass in gl_shader_compiler_options, it makes sense to just
use options->MaxUnrollIterations, rather than passing a separate
parameter.
Half of the invocations already passed options->MaxUnrollIterations,
while the other half passed in a hardcoded value of 32.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
This will prevent the two from getting out of sync again.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
These were out of sync with the flags used to control
lower_variable_index_to_cond_assign in brw_shader.cpp.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Not setting this would prevented coalescing after a failed attempt if
the sources for both MOVs were the same.
total instructions in shared programs: 1654531 -> 1650224 (-0.26%)
instructions in affected programs: 423167 -> 418860 (-1.02%)
GAINED: 2
LOST: 0
Reviewed-by: Eric Anholt <eric@anholt.net>
It's just the array index, so we can just go look at the array and see
which element we are.
No significant performance difference (n=140)
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
When considering assignment expressions like:
v.x += u.x;
v.x += u.x;
the vectorizer would incorrectly keep going, attempting to find more
instructions to vectorize. It would overwrite the saved assignment
to point at the second one, and increment channels a second time,
resulting in try_vectorize thinking the expression was a vec2 instead of
a float.
Instead, if we see a repeated assignment to a channel, just try to
vectorize everything we've found so far. This clears the saved state
so it will start over.
Fixes Piglit's repeated-channel-assignments.vert.
Cc: "10.1" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
For blocks, gl_shader_program::UniformStorage isn't very useful. The
names stored there are the names of the elements of the block, so
finding blocks with an instance name is hard. There is also only one
entry in ::UniformStorage for each element of a block array, and that is
a deal breaker.
Using ::UniformBlocks is what _mesa_GetUniformBlockIndex does. I
contemplated sharing code between set_block_binding and
_mesa_GetUniformBlockIndex, but building the stand-alone compiler and
the unit tests make this hard. I plan to return to this effort shortly.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=76323
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "10.1" <mesa-stable@lists.freedesktop.org>
Cc: github@socker.lepus.uberspace.de
In the next patch, we'll see that using
gl_shader_program::UniformStorage is not correct for uniform blocks.
That means we can't use ::UniformStorage to select between the sampler
path and the block path. Instead we want to just use the type of the
variable. That's never passed to set_uniform_binding, and it's easier
to just remove the function (especially for later patches in the series)
than to add another parameter.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=76323
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "10.1" <mesa-stable@lists.freedesktop.org>
Cc: github@socker.lepus.uberspace.de
And remove nonsensical approximation of linear interpolation behavior
for shadow samplers.
Reviewed-by: Brian Paul <brianp@vmware.com>
Tested-by: Brian Paul <brianp@vmware.com>
These were missed/typo'd in the previous patch series:
s/R8G8B8A/R8G8B8A8/
s/rgba_16/RGBA_UNORM16/
s/rgba_uint/RGBA_UINT/
s/rgba_int/RGBA_SINT/
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
The commit 3b0b44f7de introduced a build
error:
error: dereferencing pointer to incomplete type
This patch fixes this issue in all the affected files.
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
Keep tasks as linked list, this way we can associate
more than one encoding task with each buffer.
Signed-off-by: Christian König <christian.koenig@amd.com>
It was always getting set to -8/7 unconditionally. Use the
driver-reported value instead.
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Defaults to providing the same offsets as MIN/MAX_TEXEL_OFFSET. For
nvc0, the offset can be -32/31.
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Create the screen in the winsys while the mutex is locked.
This also results in a nice code cleanup!
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
This also hides the reference count from drivers.
v2: update the reference count while the mutex is locked in winsys_create
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Chris Forbes