As @johnstiles suggested I add the test first and the fix after.
bug: skia:12712
Change-Id: I9316cf40f71e756fc1730ee630bc0d0377f200d6
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/491936
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: Julia Lavrova <jlavrova@google.com>
Previously, type aliases ('vec2') were just an additional name which
could be used to refer to a type ('float2'). This was simple and worked,
except that error messages would be wrong - any type-related error
message would refer to the type as 'float2' rather than the 'vec2' that
the user actually typed.
This CL adds an AliasType class so that we can track which name was
used to refer to an aliased type and report messages using the correct
type name.
Bug: skia:12737
Change-Id: I40e234239ab47557033e0695e4fbbd5f01da354e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/490256
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Bug: oss-fuzz:43062
Change-Id: I10d8fa40c81c5b1595d30221d89c84f5cc3478fd
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/490857
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: Brian Osman <brianosman@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Structs already handled this appropriately, but interface blocks did not
guard against naming their member variables built-in type names like
"float" or "bool".
Change-Id: I12ec054b3f158b83e35031449cf2a088ff8d0dc2
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/489596
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
SkSL will reject ES2-compatible code because function parameters always
require a name in SkSL. (A followup CL relaxes this restriction and
allows anonymous parameters in SkSL.)
Change-Id: Ifdcf0fcbe0f52d16007c018b545631ca4033a8c4
Bug: skia:12769
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/489537
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Structs and interface blocks allow a trailing identifier which is added
to the symbol table. This identifier should be prohibited from
overlapping built-in types; at present, this is not checked. Add a test
demonstrating the issue.
Change-Id: I99aa915c1715c468cc369c97b7f12e031b86ea4a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/489496
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
I should have realized the fuzzer would find this assert when I added
it. Now the front-end rejects these layout qualifiers on both struct
fields and interface block fields. LayoutInInterfaceBlock.sksl is a
reformatted version of the fuzzer input. LayoutInStruct is hand-crafted
to trigger the same failure on a different code path. Both would
previously assert in the SPIRV generator. Now, neither one gets that
far.
Bug: oss-fuzz:41347
Change-Id: Iff69d8f5482da7b772e9331c4fd2d58e89813c46
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/476396
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
This fails exactly as it should, but we had no test for it.
Change-Id: I0aa3307c444f2c9bc3512ff43b784a56a7c09856
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/472449
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Mysteriously, I had written a test which put arrays of void inside a
struct, but had neglected to include the non-array case. It causes an
okay-not-great error (referring to void as an "opaque type").
Change-Id: Id20a9d3512d29aecea81d46877dce708b7b2f973
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/472450
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
We should, of course, detect this and report an error.
Change-Id: I42b3be6e714a1f367d3251842506a384f2afe019
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/472447
Auto-Submit: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
This is required by the ES2 standard: http://screen/Qysv4fPW5r5LA9e
This actually already worked fine because `strtoull` natively recognizes
octal values without any work on our part. However, we lacked a test.
Change-Id: I3033de899918abe99c63a9b7b79bd4c3374ee315
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/471716
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
The only type of expressions that getConstantSubexpression could ever
return are Literal and nullptr. getConstantValue now returns an
optional<double>; nullopt indicates a non-constant value in the slot.
This simplifies most use cases, and allows us to get rid of some extra
"zero" and "one" Literal objects in some of our Constructor classes.
This change fixes a recent fuzzer issue. The fuzzer had discovered that
calling `getConstantSubexpression` on a ConstructorCompoundCast that
contained a compile-time-constant value would return literals of the
wrong type (the cast was not applied). By nesting repeated matrix casts,
this type confusion could be turned into an assertion.
Change-Id: Icee69219e6db2822ffdfab4e5ccdaff54584a4b6
Bug: oss-fuzz:41000
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/471376
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
We never used it internally, but the shaders used by Filament rely on
it. It doesn't exist in ES2 so this doesn't affect Runtime Effects.
Change-Id: Idb2afb15ff160b950ad02101bf6381a5d5c56468
Bug: skia:12635, skia:11209
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/470156
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
We should support constant-expressions involving matrices (GLSL ES2
does, WebGL does). We currently don't. We do properly report out-of-
range indexing, but we don't optimize away valid matrix index
expressions or allow matrices to be indexed in a constant-expression
context.
Change-Id: If58aa4c5f15abef421a412957072f3617b4176df
Bug: skia:12472
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/469818
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Previously, we didn't have tests which leveraged constant-evaluation of
array indexing (because we didn't support it), and our test files
commingled constant-indexing into vectors with constant-indexing into
arrays.
The test files now separate vector- and array-handling into separate
tests, and a ton of new cases have been added to ArrayFolding. The
ArrayFolding tests now require constant-evaluation of array indexing,
so they fail in this CL, but will be fixed in the followup CL.
Change-Id: I3b663e743d97d6db80627bc9b7808f88c99917a7
Bug: skia:12472
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/469528
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Previously, this code assumed that IndexExpression::Convert had done
range checking and that it was safe to access the base expression at
the passed-in index. The inliner violates this assumption, because it
can replace unknowns (where out-of-range access is undefined but non-
fatal) with knowns (where out-of-range access is forbidden).
We now do range-checking inside IndexExpression::Make and report the
error cleanly, instead of asserting inside of Swizzle::Make due to an
invalid component index.
Change-Id: If0f31b1f694bcc2a875d124f70be311d6634c77b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/469535
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
The ExpressionStatement currently eliminates dangling references without
reporting them as an error. This happens due to optimization; these
expressions (being meaningless) have no side effects, and so the
optimizer replaces them with Nop. When the optimizer is off, these
programs trigger an assert:
https://osscs.corp.google.com/skia/skia/+/main:src/sksl/SkSLAnalysis.cpp;l=582;drc=e7a953524787e3bd0c437ec52de4e40986689825
A followup CL will fix ExpressionStatements so that they report
incomplete expressions as an error.
Change-Id: Ica49166032e670749fc1b4e7a869fbab03364d4f
Bug: skia:12472
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/469524
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Much like http://review.skia.org/467759, this CL defensively guards
against programs which consume more space than is reasonable. Globals
exist outside of functions, so they wouldn't be caught by the stack size
checks.
Change-Id: I035f27d57bc329508820a729a1e367ecaadfe156
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/467760
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Functions that declare variables totaling more than 100,000 slots will
now generate an error.
This is only a partial mitigation to the problem, as a sophisticated
attack could still chain/nest multiple functions together to consume
extremely large amounts of stack. However, this mitigation is still more
sophisticated than our peers; both WebGL and glslang are susceptible to
similar problems, and in the general case (ES3+ with full flow control)
it's intractable.
Change-Id: I153c75267c017a23f59fe9e59f6e391197ee6101
Bug: oss-fuzz:40304, oss-fuzz:40694
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/467759
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
The fuzzer triggered this error in a strange way that involves parsing a
TK_INVALID token. The fuzzer's original input used \xFF bytes in the
shader text to do this. I replaced these with the ` character since it
behaved the same, but allows our test inputs to remain basic ASCII.
The root problem is that `cast_expression`, part of no-op arithmetic
simplification, can now fail because expressions like `int(4000000000)`
no longer get past Constructor::Convert. Previously we had assumed
`cast_expression` could never return null; now we check its result for
null before using it.
Change-Id: I7335395bab0daf1f788b0c7c154904b2372ae13f
Bug: oss-fuzz:40660
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/467316
Commit-Queue: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
It's possible to write code containing errors that are only apparent
once the inliner runs. For instance, a function which takes a short and
returns its negative it is valid for most inputs, but undefined for
-32768 (because +32768 does not fit in a short). A function which takes
floats and casts them to ints is valid for many inputs, but not valid if
you pass in 5 billion.
This CL restructures our out-of-range integer error detection to report
errors cleanly in these cases instead of asserting. It also refactors
the range checking code to be usable in situations where we don't yet
have a Literal expression.
Change-Id: I98f0be63bf9afbbf1ab90233fa86d380cfae42b4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/466439
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Change-Id: Ic30c48dce0cb0072f07defcdb0b9e60b94f50818
Bug: oss-fuzz:40479
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/465392
Commit-Queue: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
A recent CL (http://review.skia.org/464121) made it an error to coerce a
literal value to a type that cannot hold the value. The fuzzer found a
case where we assumed type-coercion of a literal would always succeed,
and failed to null-check the result. We now null-check the result.
Change-Id: Id97c6016e56c20ef724028f71bbf4688dde3c064
Bug: oss-fuzz:40428
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/464919
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Yesterday's negation-related changes (http://review.skia.org/464123)
exposed a flaw that the fuzzer was able to exploit. We were previously
able to assume that `simplify_negation` would always return a non-null
expression; in some cases, that is no longer true.
Change-Id: Ia585232b0e35fafe0c642384a59ef94ce743ffd5
Bug: oss-fuzz:40427
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/464916
Commit-Queue: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
At this point, it seems like this was a mis-diagnosis of the underlying
issue around dual-source blending (and its interaction with other blend
state).
Change-Id: I11af0c9b70c32e14c353848db3d6adbfe5f08225
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/462176
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
At present, we only detect four errors here. We should detect six.
Change-Id: I226854ab930a273695c42cf2f7bdb1d5cd97e50b
Bug: oss-fuzz:39998
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/459882
Auto-Submit: John Stiles <johnstiles@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
We now detect attribute, varying, precision and invariant as reserved.
Change-Id: I8c90655a70b1bad31bf6143c3fdcb2ce582320b1
Bug: skia:12484
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/459479
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
`samplerCube` is a type which we don't support at all. It has been added
to the reserved-word list.
`textureCube` was in our list of built-in types, but was not actually
used in any way; it wasn't actually added to the root or private symbol
tables, and was totally unreferenced by the code. It's been deleted.
Change-Id: I4f79ce5d40ac6ebdb2a7067fa60cc79e316b01b6
Bug: skia:12484
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/459123
Auto-Submit: John Stiles <johnstiles@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
This reverts commit eb68973c2f.
Reason for revert: ES2 conformance test checks this
Original change's description:
> Disallow matrix ctors which overflow a column.
>
> The GLSL spec allows matrix constructors containing vectors that would
> split between multiple columns of the matrix. However, in practice, this
> does not actually work well on a lot of GPUs!
>
> - "cast not allowed", "internal error":
> Tegra 3
> Quadro P400
> GTX 660
> GTX 960
> - Compiles, but generates wrong result:
> RadeonR9M470X
> RadeonHD7770
>
> Since this isn't a pattern we expect to see in user code, we now report
> it as an error at compile time. mat2(vec4) is treated as an exceptional
> case and still allowed.
>
> Change-Id: Id6925984a2d1ec948aec4defcc790a197a96cf86
> Bug: skia:12443
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/449518
> Commit-Queue: John Stiles <johnstiles@google.com>
> Auto-Submit: John Stiles <johnstiles@google.com>
> Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Bug: skia:12443
Change-Id: I5a32744c88b9b830ad657488824c8c7dd0b0a652
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/458056
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: Leon Scroggins <scroggo@google.com>
Previously, in public code, private types didn't exist anywhere in the
symbol table chain, and those names were free for the taking. Now, we
register them as invalid types in the public symbol table. This prevents
them from being used as variable names, and gives a more explicit error
if you try to use them as a type.
Change-Id: I9a943bf923639b72cbf36b1acf4b4fbe70982786
Bug: skia:12538
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/459119
Commit-Queue: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
This fixes GLSL ES2 conformance test `array`.
Change-Id: I6ebee9253e1e8c394d9ddb6899e3a0940b7a38ef
Bug: skia:12495
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/458718
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
This should fix a failure in the ES2 conformance suite's "const_in_int".
Change-Id: I8b5487749291ef57712b8fe6c3949dc7c3e76883
Bug: skia:12499
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/455157
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
This reverts commit 5f15c695f9.
Reason for revert: landed http://ag/15959743 to fix Android roll
Original change's description:
> Revert "Mark GLSL reserved names as reserved in SkSL grammar."
>
> This reverts commit 57f3fc4cde.
>
> Reason for revert: breaking Android roll
>
> Original change's description:
> > Mark GLSL reserved names as reserved in SkSL grammar.
> >
> > We now reject every reserved name in the ES2 docs as an unexpected
> > token, except for the rule that all names beginning with `gl_` are
> > reserved. (Unfortunately, sksl_frag bends the rules by directly
> > declaring a builtin variable named `gl_SecondaryFragColorEXT`.)
> >
> > Change-Id: I5dcb40b754720ca97fe3d80e2f9072beaa39fcdb
> > Bug: skia:11115
> > Reviewed-on: https://skia-review.googlesource.com/c/skia/+/454737
> > Auto-Submit: John Stiles <johnstiles@google.com>
> > Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
> > Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
>
> Bug: skia:11115
> Change-Id: Ica56f48dc76ef1e52780acaf59b8ad9143637637
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/454860
> Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
> Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Bug: skia:11115
Change-Id: I012b8d4e03be7f9c888c26d912552412529b4fb6
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/455159
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
This reverts commit 57f3fc4cde.
Reason for revert: breaking Android roll
Original change's description:
> Mark GLSL reserved names as reserved in SkSL grammar.
>
> We now reject every reserved name in the ES2 docs as an unexpected
> token, except for the rule that all names beginning with `gl_` are
> reserved. (Unfortunately, sksl_frag bends the rules by directly
> declaring a builtin variable named `gl_SecondaryFragColorEXT`.)
>
> Change-Id: I5dcb40b754720ca97fe3d80e2f9072beaa39fcdb
> Bug: skia:11115
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/454737
> Auto-Submit: John Stiles <johnstiles@google.com>
> Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
> Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Bug: skia:11115
Change-Id: Ica56f48dc76ef1e52780acaf59b8ad9143637637
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/454860
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
We now reject every reserved name in the ES2 docs as an unexpected
token, except for the rule that all names beginning with `gl_` are
reserved. (Unfortunately, sksl_frag bends the rules by directly
declaring a builtin variable named `gl_SecondaryFragColorEXT`.)
Change-Id: I5dcb40b754720ca97fe3d80e2f9072beaa39fcdb
Bug: skia:11115
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/454737
Auto-Submit: John Stiles <johnstiles@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
This reverts commit 45e3838006.
Reason for revert: Also need to rewrite them in actual ES2 mode.
Original change's description:
> Rewrite switch statements in GLSL strict-ES2 mode.
>
> Once this lands, switch statements will work everywhere--Metal, SPIR-V,
> GLSL, and SkVM.
>
> Change-Id: I2797d0a872de8be77bb9f7aa6acb93421d571d70
> Bug: skia:12450
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/452356
> Commit-Queue: John Stiles <johnstiles@google.com>
> Auto-Submit: John Stiles <johnstiles@google.com>
> Reviewed-by: Brian Osman <brianosman@google.com>
Bug: skia:12450
Change-Id: I92656ed40289872405c0873f2c56a52b04e35b1d
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/452556
Auto-Submit: Brian Osman <brianosman@google.com>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Once this lands, switch statements will work everywhere--Metal, SPIR-V,
GLSL, and SkVM.
Change-Id: I2797d0a872de8be77bb9f7aa6acb93421d571d70
Bug: skia:12450
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/452356
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
SkVM implements switches as a pseudo-loop; breaks are handled with the
condition mask just like a for loop. Fallthrough is handled via a
scratch Value in a temporary slot. `writeStore` neeeded to be refactored
to support writing into slot(s) without an associated Variable.
At IR generation time, SwitchStatements are now emitted without error
even in strict-ES2 mode. The GLSL code generator currently reports these
as an error in strict-ES2 mode, but this will be fixed in a followup
coming shortly (the switch will be rewritten as ifs inside a one-shot
loop, similar to our IR-rewrite strategy).
Change-Id: I5507257246c42a35d2f46b4b9a89492a5ffeff9b
Bug: skia:12450
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/451421
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
This fails on several platforms in practice, and is of very limited
real-world utility.
Change-Id: Ib476396fc33cb51af6bbcf7fe822d30703ed995d
Bug: skia:12467
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/450993
Commit-Queue: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Change-Id: I17b5e21a28140b8e9313d87af9b1145674214fdb
Bug: skia:12450
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/450989
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Also, removed "switch containing dead code" test. This wasn't testing
anything meaningful. (When we had full CFG analysis, we could have
eliminated some of the assignments inside the switch body, but this is
not something we do anymore.)
Change-Id: Iaeb74ebee41a7f368113ede9a4e30c033b9de8ac
Bug: skia:12450
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/450985
Commit-Queue: John Stiles <johnstiles@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
The Mac Radeon GLSL driver crashes when given a switch statement that
only contains a default case and returns a value. Adding a case works
around the crash, and doesn't affect the meaning of the switch.
Change-Id: Iabbd267e0e31e8df7d3b7e747a7204d50931d0be
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/450977
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
While I was in this code, I realized that the setVariable method of
InterfaceBlock was unused and there was therefore no reason to be
storing a pointer instead of a reference.
Bug: oss-fuzz:39000
Change-Id: If7505ba87f4060370cfd32ca2e30c76648965101
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/450446
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
