skia2/tests/sksl/intrinsics/ClampUInt.metal
John Stiles 107ea94139 Add support for clamp($genUType, ...) in SkSL.
We never used it internally, but the shaders used by Filament rely on
it. It doesn't exist in ES2 so this doesn't affect Runtime Effects.

Change-Id: Idb2afb15ff160b950ad02101bf6381a5d5c56468
Bug: skia:12635, skia:11209
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/470156
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
2021-11-11 18:43:42 +00:00

25 lines
1.6 KiB
Metal

#include <metal_stdlib>
#include <simd/simd.h>
using namespace metal;
struct Uniforms {
half4 testInputs;
half4 colorGreen;
half4 colorRed;
};
struct Inputs {
};
struct Outputs {
half4 sk_FragColor [[color(0)]];
};
fragment Outputs fragmentMain(Inputs _in [[stage_in]], constant Uniforms& _uniforms [[buffer(0)]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
Outputs _out;
(void)_out;
uint4 uintValues = uint4(_uniforms.testInputs * 100.0h + 200.0h);
uint4 expectedA = uint4(100u, 200u, 275u, 300u);
const uint4 clampLow = uint4(100u, 0u, 0u, 300u);
uint4 expectedB = uint4(100u, 200u, 250u, 425u);
const uint4 clampHigh = uint4(300u, 400u, 250u, 500u);
_out.sk_FragColor = ((((((((((((((clamp(uintValues.x, 100u, 300u) == expectedA.x && all(clamp(uintValues.xy, 100u, 300u) == expectedA.xy)) && all(clamp(uintValues.xyz, 100u, 300u) == expectedA.xyz)) && all(clamp(uintValues, 100u, 300u) == expectedA)) && 100u == expectedA.x) && all(uint2(100u, 200u) == expectedA.xy)) && all(uint3(100u, 200u, 275u) == expectedA.xyz)) && all(uint4(100u, 200u, 275u, 300u) == expectedA)) && clamp(uintValues.x, 100u, 300u) == expectedB.x) && all(clamp(uintValues.xy, uint2(100u, 0u), uint2(300u, 400u)) == expectedB.xy)) && all(clamp(uintValues.xyz, uint3(100u, 0u, 0u), uint3(300u, 400u, 250u)) == expectedB.xyz)) && all(clamp(uintValues, clampLow, clampHigh) == expectedB)) && 100u == expectedB.x) && all(uint2(100u, 200u) == expectedB.xy)) && all(uint3(100u, 200u, 250u) == expectedB.xyz)) && all(uint4(100u, 200u, 250u, 425u) == expectedB) ? _uniforms.colorGreen : _uniforms.colorRed;
return _out;
}