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The GLSL IR representation of framebuffer fetch amounts to a single
bit in the ir_variable object applicable to fragment shader outputs.
The flag indicates that the variable will be implicitly initialized to
the previous contents of the render buffer at the same fragment
coordinates and sample index.
Reviewed-by: Kenneth Graunke <[email protected]>
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No change except to the copyright symbol. The next patch will generate
this file with Python, and Unicode + Python = pure rage.
v2: Massive rebase... I guess a lot can change in a year.
Signed-off-by: Ian Romanick <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
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Likewise, rename the enum type to glsl_interp_mode.
Beyond the GLSL front-end, talking about "interpolation modes" seems
more natural than "interpolation qualifiers" - in the IR, we're removed
from how exactly the source language specifies how to interpolate an
input. Also, SPIR-V calls these "decorations" rather than "qualifiers".
Generated by:
$ find . -regextype egrep -regex '.*\.(c|cpp|h)' -type f -exec sed -i \
-e 's/INTERP_QUALIFIER_/INTERP_MODE_/g' \
-e 's/glsl_interp_qualifier/glsl_interp_mode/g' {} \;
Signed-off-by: Kenneth Graunke <[email protected]>
Acked-by: Dave Airlie <[email protected]>
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none
v2: Also update varying_matches::compute_packing_class(). Suggested by
Timothy Arceri.
Signed-off-by: Ian Romanick <[email protected]>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=96358
Reviewed-by: Kenneth Graunke <[email protected]>
Cc: "12.0" <[email protected]>
Cc: Gregory Hainaut <[email protected]>
Cc: Ilia Mirkin <[email protected]>
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This will allow us to split gl_shader into two different structs, one for
shader objects and one for linked shaders.
Reviewed-by: Iago Toral Quiroga <[email protected]>
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Signed-off-by: Ian Romanick <[email protected]>
Reviewed-by: Timothy Arceri <[email protected]>
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Signed-off-by: Ilia Mirkin <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Dave Airlie <[email protected]>
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Although the glsl_types.h stores this in a bitfield,
we should hide that from everyone else. Hide the cast
in an accessor method and use the enum everywhere.
This makes things a bit nicer in gdb, and improves type
safety.
v2: fix a few pieces of interface I missed that caused some
piglit regressions.
Signed-off-by: Dave Airlie <[email protected]>
Reviewed-by: Ilia Mirkin <[email protected]>
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v2:
* Move lower flag to context constants. (Ken)
Cc: "12.0" <[email protected]>
Signed-off-by: Jordan Justen <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]> (v1)
Reviewed-by: Jason Ekstrand <[email protected]>
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This reverts commit aac90ba2920cf5ceb4df6dba776dd3952780e456.
The commit caused a regression in:
piglit.spec.glsl-1_50.compiler.gs-input-nonarray-named-block.geom
Also the CTS test it was meant to fix seems like it may be bogus.
Cc: "12.0" <[email protected]>
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This partially fixes CTS test:
GL44-CTS.enhanced_layouts.xfb_get_program_resource_api
The test now fails at a tes evaluation shader with unsized output arrays.
The ARB_enhanced_layouts spec says:
"It is a compile-time error to apply xfb_offset to the declaration of an
unsized array."
So this seems like a bug in the CTS.
Reviewed-by: Dave Airlie <[email protected]>
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The current code disallows unsized arrays except at the end of
an SSBO but it is a bit overzealous in doing so.
struct a {
int b[];
int f[4];
};
is valid as long as b is implicitly sized within the shader,
i.e. it is accessed only by integer indices.
I've submitted some piglit tests to test for this.
This also has no regressions on piglit on my Haswell.
This fixes:
GL45-CTS.shader_storage_buffer_object.basic-syntax
GL45-CTS.shader_storage_buffer_object.basic-syntaxSSO
This patch moves a chunk of the linker code down, so
that we don't link the uniform blocks until after we've
merged all the variables. The logic went something like:
Removing the checks for last ssbo member unsized from
the compiler and into the linker, meant doing the check
in the link_uniform_blocks code. However to do that the
array sizing had to happen first, so we knew that the
only unsized arrays were in the last block. But array
sizing required the variable to be merged, otherwise
you'd get two different array sizes in different
version of two variables, and one would get lost
when merged. So the solution was to move array sizing
up, after variable merging, but before uniform block
visiting.
Reviewed-by: Samuel Iglesias Gonsálvez <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
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This fixes a bug that breaks cull distances. The problem
is the max array accessors can't tell the difference between
an never accessed unsized array and an accessed at location 0
unsized array. This leads to converting an undeclared unused
gl_ClipDistance inside or outside gl_PerVertex to a size 1
array. However we need to the number of active clip distances
to work out the starting point for the cull distances, and
this offset by one when it's not being used isn't possible
to distinguish from the case were only the first element is
accessed. I tried to use ->used for this, but that doesn't
work when gl_ClipDistance is part of an interface block.
So this changes things so that max_array_access is an int
and initialised to -1. This also allows unsized arrays to
proceed further than that could before, but we really shouldn't
mind as they will get eliminated if nothing uses them later.
For initialised uniforms we no longer change their array
size at runtime, if these are unused they will get eliminated
eventually.
v2: use ralloc_array (Ilia)
Reviewed-by: Ilia Mirkin <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
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We'll need this for a nir pass to lower builtin-uniform access.
Signed-off-by: Rob Clark <[email protected]>
Reviewed-by: Jason Ekstrand <[email protected]>
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We make use of the existing IR field location_frac used for tracking
component locations.
Reviewed-by: Anuj Phogat <[email protected]>
Reviewed-by: Edward O'Callaghan <[email protected]>
Reviewed-by: Kenneth Graunke <[email protected]>
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Adds xfb_buffer/stride fields and adds comment to offset field
which is reused for xfb_offset.
Reviewed-by: Dave Airlie <[email protected]>
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Firstly this updates the named interface lowering pass to store the
interface without the arrays removed.
Note we need to remove the arrays in the interface/varying matching
code to not regress things but in future this should be fixed
futher as it would seem we currently successfully match interface
blocks with differnt array sizes.
Since we now know if the interface was an array we can reduce the
IR flags from_named_ifc_block_array and from_named_ifc_block_nonarray
to just from_named_ifc_block.
Next rather than having a different code path for named interface
blocks in program_resource_visitor we just make use of the one used
by UBOs this allows us to now handle arrays of arrays correctly.
Finally we add a new param to the recursion function
named_ifc_member this is because we only want to process a single
member at a time. Note that this is also the glsl_struct_field
from the original ifc type before lowering rather than the type
from the lowered variable. This fixes a bug in Mesa where we would
generate the names like WithInstArray[0].g[0][0] when it should be
WithInstArray[0].g[0] for the following interface.
out WithInstArray {
float g[3];
} instArray[2];
Reviewed-by: Dave Airlie <[email protected]>
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In GL 4.4+ there is no guarantee that interpolation qualifiers will
match between stages so we cannot safely pack varyings using the
current packing pass in Mesa.
We also disable packing on outerward facing interfaces for SSO
because in ES we need to retain the unpacked varying information
for draw time validation. For desktop GL we could allow packing for
SSO in versions < 4.4 but its just safer not to do so.
We do however enable packing on individual arrays, structs, and
matrices as these are required by the transform feedback code and it
is still safe to do so.
Finally we also enable packing when a varying is only used for
transform feedback and its not a SSO.
This fixes all remaining rendering issues with the dEQP SSO tests,
the only issues remaining with thoses tests are to do with validation.
Note: There is still one remaining SSO bug that this patch doesn't fix.
Their is a chance that VS -> TCS will have mismatching interfaces
because we pack VS output in case its used by transform feedback but
don't pack TCS input for performance reasons. This patch will make the
situation better but doesn't fix it.
V4: fix out of order function params after rebase, make sure packing
still disabled in tess stages. Update comments as to why we disable
packing on SSO.
V3: ES 3.1 *does* require interpolation to match so don't disable
packing there. Rebased on master rather than on enhanced layouts
component packing series.
V2: Make is_varying_packing_safe() a function in the varying_matches
class, fix spelling (Matt) and make sure to remove the outer array
when dealing with Geom and Tess shaders where appropriate.
Lastly fix piglit regression in new piglit test and document the
undefined behaviour it depends on:
arb_separate_shader_objects/execution/vs-gs-linking.shader_test
Reviewed-by: Samuel Iglesias Gonsálvez <[email protected]>
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The old comment was for the location not the offset, we now use
the field for block members so mention that also.
Reviewed-by: Edward O'Callaghan <[email protected]>
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Unclear to me whether it actually is a horizontal operation that cannot
be vectorized, but the fact that i965 generates the same code in either
case makes me less interested in finding out.
Cc: [email protected]
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=94199
Reviewed-by: Kenneth Graunke <[email protected]>
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Seems to have become unused when i965 moved to NIR.
Reviewed-by: Iago Toral Quiroga <[email protected]>
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We have a requirement to store the index into the mesa parameterlist
for uniforms. Up until now we've overwritten var->data.location with
this info. However this then stops us accessing UniformStorage,
which is needed to do proper dereferencing.
Add a new variable to ir_variable to store this value in, and change
the two uses to use it correctly.
Reviewed-by: Timothy Arceri <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
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i965/fs was the only consumer, and we're now doing the lowering in NIR.
Reviewed-by: Iago Toral Quiroga <[email protected]>
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Signed-off-by: Emil Velikov <[email protected]>
Acked-by: Matt Turner <[email protected]>
Acked-by: Jose Fonseca <[email protected]>
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