skia2/resources/sksl
John Stiles eb68973c2f 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>
2021-09-16 22:14:49 +00:00
..
blend Remove SkBlendMode from SkSL 2021-06-16 21:01:30 +00:00
errors Disallow matrix ctors which overflow a column. 2021-09-16 22:14:49 +00:00
folding Remove 0/x arithmetic simplification. 2021-08-24 19:18:41 +00:00
glsl Report an error if sk_LastFragColor is referenced without fbFetchSupport 2021-09-15 15:41:49 +00:00
inliner Fix inliner bug discovered by fuzzer. 2021-09-07 13:29:37 +00:00
intrinsics Disallow matrix ctors which overflow a column. 2021-09-16 22:14:49 +00:00
metal Enable proper testing of matrix-scalar ops. 2021-05-17 17:36:22 +00:00
runtime Add program-too-large test using for loops without blocks. 2021-09-15 14:19:00 +00:00
runtime_errors Improve overflow checks in CheckProgramUnrolledSize. 2021-09-15 16:42:45 +00:00
shared Disallow matrix ctors which overflow a column. 2021-09-16 22:14:49 +00:00
spirv Fix parsing error with SPIR-V negating a uint. 2021-08-25 17:52:50 +00:00
workarounds Add a workaround for "ldexp(..., -x)" on Mac/Radeon/GLSL 2021-06-08 01:39:38 +00:00
README.txt Migrate SkSL test inputs to the resources/ directory. 2021-01-22 18:57:29 +00:00
update_fuzzer.py Add script to update the SkSL fuzzer corpus automatically. 2021-08-26 13:51:44 +00:00

This directory contains source files for testing skslc compilation.
The compiled output files are in the /tests/sksl/ directory.