skia2/resources/sksl/errors/MatrixToVectorCastInteger.sksl
John Stiles f9ad6ec852 Add support for mat2-to-ivec4 conversions in SkSL.
The fuzzer quickly discovered that the newly introduced mat2-to-vec4
conversion code did not account for integer vectors. We now handle
`ivec4(mat2)` casts properly. This required some non-trivial
restructuring of the logic, but in the vast majority of cases, the types
will match and the end result will be identical.

Change-Id: If07c2fe4b4345bd767384b1802374910f65cd3f0
Bug: oss-fuzz:35998
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/426756
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
2021-07-12 14:09:18 +00:00

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// Expect 3 errors
const half2x2 testMatrix2x2 = half2x2(1, 2, 3, 4);
int testScalar = int (testMatrix2x2);
int2 testVec2 = int2(testMatrix2x2);
int3 testVec3 = int3(testMatrix2x2);
int4 testVec4 = int4(testMatrix2x2); // not an error