skia2/tests/sksl/intrinsics/Cross.glsl


out vec4 sk_FragColor;
in vec2 a;
in vec2 b;
void main() {
    sk_FragColor.x = a.x * b.y - a.y * b.x;

}
Add tests for SkSL intrinsic functions. This does not give us 100% coverage of intrinsics yet, but it is a pretty good start. Change-Id: I97d49324db1afd9f2975c2eeafbacdead710d4aa Bug: skia:11054 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/341977 Commit-Queue: John Stiles <johnstiles@google.com> Auto-Submit: John Stiles <johnstiles@google.com> Reviewed-by: Ethan Nicholas <ethannicholas@google.com> 2020-12-09 21:19:37 +00:00
			`out vec4 sk_FragColor;`
			`in vec2 a;`
			`in vec2 b;`
			`void main() {`
Eliminate inliner temporary variables for top-level-exit functions. When we determine that a function only contains a single return statement and it is at the top level (i.e. not inside any scopes), there is no need to create a temporary variable and store the result expression into a variable. Instead, we can directly replace the function-call expression with the return-statement's expression. Unlike my previous solution, this does not require variable declarations to be rewritten. The no-scopes limitation makes it slightly less effective in theory, but in practice we still get almost all of the benefit. The no-scope limitation bites us on structures like @if (true) { return x; } else { return y; } Which will optimize away the if, but leave the scope: { return x; } However, this is not a big deal; the biggest wins are single-line helper functions like `guarded_divide` and `unpremul` which retain the full benefit. Change-Id: I7fbb725e65db021b9795c04c816819669815578f Reviewed-on: https://skia-review.googlesource.com/c/skia/+/345167 Commit-Queue: John Stiles <johnstiles@google.com> Auto-Submit: John Stiles <johnstiles@google.com> Reviewed-by: Ethan Nicholas <ethannicholas@google.com> 2020-12-17 19:38:56 +00:00			`sk_FragColor.x = a.x * b.y - a.y * b.x;`
Add tests for SkSL intrinsic functions. This does not give us 100% coverage of intrinsics yet, but it is a pretty good start. Change-Id: I97d49324db1afd9f2975c2eeafbacdead710d4aa Bug: skia:11054 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/341977 Commit-Queue: John Stiles <johnstiles@google.com> Auto-Submit: John Stiles <johnstiles@google.com> Reviewed-by: Ethan Nicholas <ethannicholas@google.com> 2020-12-09 21:19:37 +00:00
			`}`