_mesa_meta_setup_blit_shader() currently generates a fragment shader
which, irrespective of the number of draw buffers, writes the color
to only one 'out' variable. Current shader rely on an undefined
behavior and possibly works by chance.
From OpenGL 4.0 spec, page 256:
"If a fragment shader writes to gl_FragColor, DrawBuffers specifies a
set of draw buffers into which the single fragment color defined by
gl_FragColor is written. If a fragment shader writes to gl_FragData,
or a user-defined varying out variable, DrawBuffers specifies a set
of draw buffers into which each of the multiple output colors defined
by these variables are separately written. If a fragment shader writes
to none of gl_FragColor, gl_FragData, nor any user defined varying out
variables, the values of the fragment colors following shader execution
are undefined, and may differ for each fragment color."
OpenGL 4.4 spec, page 463, added an additional line in this section:
"If some, but not all user-defined output variables are written, the
values of fragment colors corresponding to unwritten variables are
similarly undefined."
V2: Write color output to gl_FragColor instead of writing to multiple
'out' variables. This'll avoid recompiling the shader every time
draw buffers count is updated.
Cc: <mesa-stable@lists.freedesktop.org>
Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
In commit 4be146b1, I neglected to add the new property to the strings
array. This leads to the string '(null)' to be printed instead when
converting a GS shader to text.
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: "10.2" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Make sure to normalize the z coordinates as well as the x/y ones when
there are mipmaps present. Fixes 3d mipmap generation, which now uses
the blit path.
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: "10.2" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Ben Skeggs <bskeggs@redhat.com>
These instructions can come in either through IMUL_HI/UMUL_HI TGSI
opcodes, or from OP_DIV constant folding.
Also make sure that the constant foldings which delete the original
instruction still get counted as having done something.
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: "10.1 10.2" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Ben Skeggs <bskeggs@redhat.com>
Retrieving the high 32 bits of a signed multiply is rather annoying. It
appears that the simplest way to do this is to compute the absolute
value of the arguments, and perform a u32 x u32 -> u64 operation. If the
arguments' signs differ, then negate the result. Since there is no u64
support in the cvt instruction, we have the perform the 2's complement
negation "by hand".
This logic can come into use by the IMUL_HI instruction (very unlikely
to be seen), as well as from constant folding of division by a constant.
Fixes dolphin's divisions by 255.
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: "10.1 10.2" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Ben Skeggs <bskeggs@redhat.com>
Modern applications frequencly use both UNORM buffers and FLOAT buffers
with color clamping disabled. (FLOAT with clamping explicitly enabled
and SNORM buffers appear to be less common.) We don't need to emit
saturates in the fragment shader in either of the common cases.
Mesa sets ctx->Color._ClampFragmentColor to false if all the color
buffers are UNORM. Also, for GL_FIXED_ONLY mode (the default in
legacy OpenGL), it will be false if any FLOAT buffers are bound.
Since the common case is false, that should be our default.
Thanks to Roland Scheidegger for pointing out some faulty logic
in v1 of this patch (unnecessary code and incorrect explanations).
v2: Drop superfluous code and reword commit message.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Chromium defined a new GL extension (that isn't registered with Khronos).
We need to add an EGL extension for it, so we can migrate ChromeOS on
Intel systems to use EGL instead of GLX.
http://git.chromium.org/gitweb/?p=chromium/src/third_party/khronos.git;a=commitdiff;h=27cbfdab35c601f70aa150581ad1448d0401f447
The EGL_CHROMIUM_sync_control extension is similar to the GLX extension
OML_sync_control, but only defines one function,
eglGetSyncValuesCHROMIUM, which is equivalent to glXGetSyncValuesOML.
http://www.opengl.org/registry/specs/OML/glx_sync_control.txt
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Reviewed-by: Chad Versace <chad.versace@linux.intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Cc: Jamey Sharp <jamey@minilop.net>
Cc: Ian Romanick <idr@freedesktop.org>
Cc: Stéphane Marchesin <stephane.marchesin@gmail.com>
In order to support the (currently unregistered) Chromium-specific EGL
extension eglGetSyncValuesCHROMIUM on Intel systems, we need to import
the Chromium header that defines it. The file was downloaded from
https://chromium.googlesource.com/chromium/chromium/+/trunk/ui/gl/EGL/eglextchromium.h
It is subject to the license found at
https://chromium.googlesource.com/chromium/chromium/+/trunk/LICENSE
I have imported the header file and added the license text to the top.
The only change was to fix the include guard on the Chromium header to
change the last line from a #define to a #endif, which makes the header
actually compile.
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Reviewed-by: Chad Versace <chad.versace@linux.intel.com>
Cc: Jamey Sharp <jamey@minilop.net>
Cc: Ian Romanick <idr@freedesktop.org>
Cc: Stéphane Marchesin <stephane.marchesin@gmail.com>
I think a3xx and later should support (it is part of GLES3), but this
isn't needed for the time being and still needs to be reversed.
Signed-off-by: Rob Clark <robclark@freedesktop.org>
This is a replacement for bd44ac8b5c
that should actually work.
Fixes Piglit's copyteximage-border on swrast, as well as one of
es3conform's packed_pixels_pixelstore test.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=78546
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=77705
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
Cc: "10.2" <mesa-stable@lists.freedesktop.org>
Separating the software fallbacks from the rest of the meta path (which
is usually hardware accelerated) gives callers better control over their
blitting options.
For example, i965 might want to try meta blit, hardware blits, then
swrast as a last resort. Splitting it makes that possible.
This updates all callers to maintain the existing behavior (even in the
few cases where it isn't desirable behavior - later patches can change
that).
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
Cc: "10.2" <mesa-stable@lists.freedesktop.org>
These aren't necessary - all of the following code is predicated on mask
being non-zero, so no code will get executed anyway.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Courtney Goeltzenleuchter <courtney@lunarg.com>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
Cc: "10.2" <mesa-stable@lists.freedesktop.org>
SCons is required for Windows. Add links to flex/bison for Windows.
Reorder items and improve formatting.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
I don't have an ILK at hand but the fix should be trivial.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=78872
Cc: "10.2" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
Reviewed-and-tested-by: Kenneth Graunke <kenneth@whitecape.org>
It's not properly implemented in the meta code, and we don't have time
to fix it for 10.2.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Cc: "10.2" <mesa-stable@lists.freedesktop.org>
2ea923cf57 had the side effect of IR counting
now being done after IR optimization instead of before. Some quick analysis
shows that there's roughly 1.5 times more IR instructions before optimization
than after, hence the effective shader cache size got quite a bit smaller.
Could counter this with an increase of the instruction limit but it probably
makes more sense to count them after optimizations, so move that code.
Reviewed-by: Brian Paul <brianp@vmware.com>
Fixes build error introduced with commit
4b04152db0.
CC test_eu_compact.o
test_eu_compact.c: In function ‘test_compact_instruction’:
test_eu_compact.c:54:3: error: implicit declaration of function ‘brw_disasm’ [-Werror=implicit-function-declaration]
brw_disasm(stderr, &src, brw->gen, false);
^
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=78888
Signed-off-by: Vinson Lee <vlee@freedesktop.org>
We already have a perfectly good copy of the program key, and nobody is
going to modify it. The only reason we copied it was because the
brw_wm_compile structure embedded the key rather than pointing to it.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
Instead, just pass the key and prog_data as separate parameters.
This moves it up a level - one step further toward getting rid of it.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
'c' is going away, but we still need a memory context that lives
for the duration of the compile.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
Previously, the memory context situation was a bit of a mess:
fs_visitor allocated its own memory context, and freed it in the
destructor. However, some data produced by fs_visitor (such as the list
of instructions) needs to live beyond when fs_visitor is "done", so the
caller can pass it to fs_generator.
Everything worked out because brw_wm_fs_emit's fs_visitor variables
happen to not go out of scope until the end of the function. But that
meant that moving the declaration of, say, the SIMD16 fs_visitor
instance, could cause everything to explode.
Using a memory context that exists for the duration of the compile is
clearer, and should be equivalent.
Ultimately, we don't want to use 'c', but this matches the behavior of
fs_generator and gen8_fs_generator, so it'll be simple to change later.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
We throw away the data generated during compilation on the success path,
so we really ought to on the failure path as well. The caller has no
access to it anyway, so it's purely leaked.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
'c' is going away. This is also a bit shorter.
Marking the key pointer as const will also deter people from changing
it in these classes, as that's absolutely not OK.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
'c' is going away. This is also shorter.
Marking the key pointer as const will also deter people from changing
it in fs_visitor, as it's absolutely not OK to modify it there.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
runtime_check_aads_emit isn't actually used currently, but I believe
we should be using it on Gen4-5, so I haven't eliminated it.
See https://bugs.freedesktop.org/show_bug.cgi?id=78679 for details.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
This data is created by fs_visitor and only used when emitting code,
so keeping it in fs_visitor makes sense. I decided it would be
reasonable to group these all together in a struct, since they're
highly related.
v2: s/nr_payload_regs/payload.num_regs/ in some comments (chrisf).
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
As far as I can tell, there's no point in allocating an extra register
and generating a MOV---we can just use the copy provided as part of our
thread payload directly. It's already in the right format.
Of course, there are zero Piglit tests for this. We don't actually ship
the extension (GL_ARB_gpu_shader5) that exposes this functionality
either.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
This is actually for gl_SampleMaskIn, which is quite different than
gl_SampleMask. Renaming should help avoid confusion.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
Nothing outside of fs_visitor uses it, so we may as well keep it
internal.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
With this one use gone, c->last_scratch is now only used inside
fs_visitor. The rest of the driver uses prog_data->total_scratch.
We already compute similar prog_data fields in fs_visitor, so this
seems reasonable.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
The if (!allocated_without_spills) block is an obvious spot for this
performance warning message.
In the Vec4 backend, scratch is also used for indirect access of
temporary arrays. The FS backend doesn't implement that yet, but
if it did, this message would be inaccurate, since scratch access
wouldn't necessarily mean spilling. Moving it preemptively fixes that.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
"Disassemble" is an accurate description of what this function does.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
We're going to use "disassemble" for the function that disassembles
the whole program.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
dump_prog_cache has interpreted compacted instructions as full size
instructions, decoding garbage and complaining about invalid values.
We can just use brw_dump_compile to handle this correctly in less code.
The output format changes slightly, but it's still perfectly acceptable.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Looping over the instructions and calling brw_disasm doesn't handle
compacted instructions. In most cases, this hasn't been a problem since
we don't compact prior to Sandybridge.
However, Sandybridge's transform feedback GS program should already be
compacted, and so this ought to fix decoding of that.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
UNION appears to expect that all of its sources are conditionally
defined. Otherwise it inserts an unpredicated mov instruction which
overwrites the desired result. This fixes tests that use UMUL_HI, and
much less directly, unsigned integer division by a constant, which uses
this functionality in a peephole pass.
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: "10.1 10.2" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Ben Skeggs <bskeggs@redhat.com>
