skia2/resources/sksl/intrinsics/ClampFloat.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() {
half4 expectedA = half4(-1, 0, 0.75, 1);
// (-1.25, 0, 0.75, 2.25)
half4 clampLow = half4(-1, -2, -2, 1);
half4 expectedB = half4(-1, 0, 0.5, 2.25);
half4 clampHigh = half4( 1, 2, 0.5, 3);
return (clamp(testInputs.x, -1, 1) == expectedA.x &&
clamp(testInputs.xy, -1, 1) == expectedA.xy &&
clamp(testInputs.xyz, -1, 1) == expectedA.xyz &&
clamp(testInputs.xyzw, -1, 1) == expectedA.xyzw &&
clamp(testInputs.x, clampLow.x, clampHigh.x ) == expectedB.x &&
clamp(testInputs.xy, clampLow.xy, clampHigh.xy ) == expectedB.xy &&
clamp(testInputs.xyz, clampLow.xyz, clampHigh.xyz ) == expectedB.xyz &&
clamp(testInputs.xyzw, clampLow.xyzw, clampHigh.xyzw) == expectedB.xyzw) ? colorGreen
: colorRed;
}