Performance delta on Core i5-4570 + Radeon R9 270:
Overlord: +20% in certain locations
Overlord II: +20% in certain locations
Oil Rush: +12% in most locations
War Thunder: +4-9% in benchmarks
Saints Row 2: +10-35% in certain locations
This needs to be passed to gallium drivers.
No game fix is planned at this time.
The addition of glsl_correct_derivatives_after_discard is
generally a good thing for mesa compatibility with the broader GL
driver ecosystem.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=100070
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
It appears like the GLX_EXT_buffer_age extension also prevents Compiz /
Ubuntu Unity from performing partial buffer swaps when it otherwise
feels like doing so. So try to get them back again. We also disable
GLX_OML_sync_control since it appears it had a favourable impact on
gnome-shell.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Increases performance on vmwgfx since we're avoiding full buffer damage and
since we can't sync to vertical retrace anyway.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This fixes the long-standing problem with Dying Light where the game would
produce a black screen when running under Mesa. This happened because the
game's vertex shaders redeclare gl_VertexID, which is a GLSL builtin.
Mesa's GLSL compiler is a little more strict than others, and would not
compile them:
error: `gl_VertexID' redeclared
The allow_glsl_builtin_variable_redeclaration directive allows the shaders
to compile and the game to render. The game also requires OpenGL 4.4+ (GLSL
440), but does not request it explicitly. It must be forced with an
override, such as MESA_GL_VERSION_OVERRIDE=4.5 and
MESA_GLSL_VERSION_OVERRIDE=450. A compatibility context is *not* required
and forcing one with 4.5COMPAT or allow_higher_compat_version results in
graphical artifacts.
Dead Island Definitive Edition is another Techland port on the same engine
with the same problems, so we set the
allow_glsl_builtin_variable_redeclaration option for that game as well.
v2 (Samuel Pitoiset):
- Rename allow_glsl_builtin_redeclaration ->
allow_glsl_builtin_variable_redeclaration
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=96449
Signed-off-by: John Brooks <john@fastquake.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
This fixes the stripes of garbage rendered on the floor of the vehicle
assembly building among other rendering issues. The reason for the
misrendering seems to be that some of the GLSL shaders used by the
application use variables before initializing them, incorrectly
assuming that they will be implicitly set to zero by the
implementation.
Acked-by: Matt Turner <mattst88@gmail.com>
Game ported from D3D9 which expects sqrt() to compute the absolute
value as explained in the spec.
This gets rid of the NaN values as well as the black squares
with RadeonSI.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97338
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This game uses GLSL 430 but the interpolation qualifiers in
some shaders don't match, which ends up in a link error. GLSL
440 spec removed this restriction, force it.
This fixes the following link error, as well as serious
rendering problems.
error: vertex shader output `out_TEXCOORD1' specifies noperspective
interpolation qualifier, but fragment shader input specifies no
interpolation qualifier
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
See also <https://bugs.freedesktop.org/show_bug.cgi?id=93551#c27> where
this was first observed as a requirement.
Signed-off-by: Kai Wasserbäch <kai@dev.carbon-project.org>
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Some games are sloppy.. perhaps because it is defined behavior for DX or
perhaps because nv blob driver defaults things to zero.
So add driconf param to force uninitialized variables to default to zero.
This issue was observed with rust, from steam store. But has surfaced
elsewhere in the past.
Signed-off-by: Rob Clark <robclark@freedesktop.org>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
OpenGL's dual color blending feature was specified so that an
implementation could support both multiple render targets (MRT) and
dual source blending. Fragment shader outputs specify both "location"
(the render target number) and "index" (either color 0 or 1).
I believe DirectX only has the notion of "location" - if using dual
color blending, location 0 or 1 will specify the operands. If not,
then location means the render target index. The two features can't
be used together.
As such, some applications mistakenly try to use <loc = 0, index = 0>
and <loc = 1, index = 0> in a shader used for dual color blending with
a single render target, rather than the correct <loc = 0, index = 0>
and <loc = 0, index = 1>.
In particular, Unigine Heaven 4.0 and Valley 1.0 suffer from this bug.
Unigine is aware of the problem, and quickly developed a fix, but has
not bothered to change the download link on their website to a working
copy in over a year. People were still using the broken version and
complaining. We tried working around this by disabling dual color
blending, but that apparently hurts performance, and people were once
again unhappy.
On i965, dual source blending is achieved by using different framebuffer
write messages than normal rendering. So, we have to compile different
code for the two cases. We're not being pedantic: we actually have to
know in order to function.
Normally, dual source blending is detectable in the shader: if a shader
has an output with index = 1, then it's meant for blending, not MRT.
With the broken inputs, they're indistinguishable, so we can only tell
by looking at the current GL state.
This patch implements a new drirc workaround:
export dual_color_blend_by_location=true
which makes the i965 driver detect when OpenGL state is configured for
dual source blending, and recompile the fragment shader to use the right
messages. In that case, we allow either location = 1 or index = 1 to
specify the second source for the blending equations.
It also re-enables GL_ARB_blend_func_extended for Unigine.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92233
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Acked-by: Ilia Mirkin <imirkin@alum.mit.edu>
Unigine Heaven 4.0 and Valley 1.0 use dual color blending but don't
specify which fragment shader output is which, so there's at best a
50/50 chance of us guessing it correctly. This is invalid.
Unigine fixed this in 4.1 and 1.1 versions over a year and a half ago,
but hasn't actually released them for whatever reason. So, add the
workaround back so that it works for most people.
Fixes Heaven 4.0/Valley 1.0 rendering on Ivybridge. For whatever
reason, Broadwell worked. 4.1 and 1.1 have always worked.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92233
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Cc: mesa-stable@lists.freedesktop.org
Appears to fix shader compilation. Tested by starting the client and observing
that the screen was correct after the trailers ran when previously, it was
blank. Play tested on amd64.
This was suggested by "Kuuchan" on the Steam forums:
https://steamcommunity.com/app/200390/discussions/0/540731690861139279/?insideModal=1#c594820656479479870
Acked-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Richard Yao <ryao@gentoo.org>
Most (all?) Unigine shaders fail to compile without this if sample shading
is advertised. This is, of course, Unigine developers' fault.
Reviewed-by: Brian Paul <brianp@vmware.com>
See documentation in mtypes.h.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
They were only enabled for i965.
Note that drirc must be installed in /etc.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
This application is known to contain shaders that:
1. Have a stray backslash as the last line of comment lines
2. Have a declaration immediately following that line
Hence, interpreting that backslash as a line continuation causes the
declaration to be hidden and the shader fails to compile. Fortunately, the
shaders also:
3. Do not have any other intentional line-continuation characters
So disabling line continuations entirely for the application fixes this
problem without causing any other breakage.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
The previous commit implemented the workaround, cited a bug report
about OilRush, but actually only enabled the workaround for the demos.
Turn it on for OilRush too.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=50291
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Unigine Heaven (at least) has a bug where it incorrectly uses the
GL_ARB_blend_func_extended extension.
Dual source blending allows two color outputs per render target;
individual shader outputs can be assigned to be either the first or
second blending input by setting the 'index' via one of two methods:
- An API call: glBindFragDataLocationIndexed()
- The GLSL 'layout' qualifier provided by GL_ARB_explicit_attrib_location
Both of these only work on user defined fragment shader outputs; it's an
error to use either on built-in outputs like gl_FragData.
Unigine uses gl_FragData and gl_FragColor exclusively, and doesn't even
attempt to use either method to set index == 1. However, it does set
the blending function to SRC1 enums, which requires a fragment shader
output with index == 1 or else rendering is undefined.
In other words, enabling ARB_blend_func_extended causes Unigine to
render incorrectly, resulting in an apparent regression, even though our
driver code (as far as I can tell) is perfectly fine.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=50291
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Chad Versace <chad.versace@linux.intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Unfortunately, Unigine Heaven 3.0 still needs this.
NOTE: This is a candidate for the 8.0 branch.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
I wasn't seeing it be needed because of the previous bug.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Specifially, this being present works around a bug in Unigine
Sanctuary on i965 which previously resulted in bad rendering.
NOTE: This is a candidate for the 8.0 branch.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Nicolai Hähnle
Marek Olšák
Kamil Páral
Petr Sebor
Edmondo Tommasina
Thomas Hellstrom
Benedikt Schemmer
John Brooks
Francisco Jerez
Samuel Pitoiset
Eric Engestrom
Kai Wasserbäch
Rob Clark
Kenneth Graunke
Richard Yao
Sven Arvidsson
Brian Paul
Carl Worth
Eric Anholt