skia2/resources/sksl/intrinsics/ClampInt.sksl
John Stiles 9c9f60cdb4 Implement additional Runtime Effect intrinsic tests.
Tested in dm:
- max(halfN, halfN)
- max(halfN, half)
- min(halfN, halfN)
- min(halfN, half)
- clamp(halfN, halfN, halfN)
- clamp(halfN, half, half)
- mix(halfN, halfN, halfN)
- mix(halfN, halfN, half)

Compiled outputs only (not in ES2):
- max(intN, intN)
- max(intN, int)
- min(intN, intN)
- min(intN, int)
- clamp(intN, intN, intN)
- clamp(intN, int, int)
- mix(halfN, halfN, boolN)  - broken in Metal/SPIR-V (skia:11222)
- mix(intN, intN, boolN)    - broken in Metal/SPIR-V (skia:11222)

Change-Id: Iaafc5429b16d2a8710b9d171ae281c268c0fd70d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/361438
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
2021-01-29 18:23:48 +00:00

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uniform half4 testInputs;
uniform half4 colorGreen, colorRed;
half4 main() {
int4 expectedA = int4(-100, 0, 75, 100);
int4 intValues = int4(testInputs * 100);
// (-125, 0, 75, 225)
int4 clampLow = int4(-100, -200, -200, 100);
int4 expectedB = int4(-100, 0, 50, 225);
int4 clampHigh = int4( 100, 200, 50, 300);
return (clamp(intValues.x, -100, 100) == expectedA.x &&
clamp(intValues.xy, -100, 100) == expectedA.xy &&
clamp(intValues.xyz, -100, 100) == expectedA.xyz &&
clamp(intValues.xyzw, -100, 100) == expectedA.xyzw &&
clamp(intValues.x, clampLow.x, clampHigh.x ) == expectedB.x &&
clamp(intValues.xy, clampLow.xy, clampHigh.xy ) == expectedB.xy &&
clamp(intValues.xyz, clampLow.xyz, clampHigh.xyz ) == expectedB.xyz &&
clamp(intValues.xyzw, clampLow.xyzw, clampHigh.xyzw) == expectedB.xyzw) ? colorGreen
: colorRed;
}