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Add Metal support for degrees() and radians() intrinsics.

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Change-Id: I4a483c455c9a12c92b717a0c2713d32ab44dcd6f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/343099
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
This commit is contained in:
John Stiles 2020-12-10 18:02:02 -05:00 committed by Skia Commit-Bot
parent 0063a9fa0e
commit e2d34f8ebf
4 changed files with 18 additions and 2 deletions
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14
src/sksl/SkSLMetalCodeGenerator.cpp
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@ -45,11 +45,13 @@ void MetalCodeGenerator::setupIntrinsics() {
fIntrinsicMap[String("floatBitsToUint")] = SPECIAL(Bitcast);
fIntrinsicMap[String("intBitsToFloat")] = SPECIAL(Bitcast);
fIntrinsicMap[String("uintBitsToFloat")] = SPECIAL(Bitcast);
fIntrinsicMap[String("degrees")] = SPECIAL(Degrees);
fIntrinsicMap[String("distance")] = SPECIAL(Distance);
fIntrinsicMap[String("dot")] = SPECIAL(Dot);
fIntrinsicMap[String("length")] = SPECIAL(Length);
fIntrinsicMap[String("mod")] = SPECIAL(Mod);
fIntrinsicMap[String("normalize")] = SPECIAL(Normalize);
fIntrinsicMap[String("radians")] = SPECIAL(Radians);
fIntrinsicMap[String("sample")] = SPECIAL(Texture);
fIntrinsicMap[String("equal")] = METAL(Equal);
fIntrinsicMap[String("notEqual")] = METAL(NotEqual);
@ -636,6 +638,18 @@ void MetalCodeGenerator::writeSpecialIntrinsic(const FunctionCall & c, SpecialIn
this->write(")");
break;
}
case kDegrees_SpecialIntrinsic: {
this->write("((");
this->writeExpression(*arguments[0], kSequence_Precedence);
this->write(") * 57.2957795)");
break;
}
case kRadians_SpecialIntrinsic: {
this->write("((");
this->writeExpression(*arguments[0], kSequence_Precedence);
this->write(") * 0.0174532925)");
break;
}
default:
ABORT("unsupported special intrinsic kind");
}

2
src/sksl/SkSLMetalCodeGenerator.h
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@ -105,11 +105,13 @@ protected:
enum SpecialIntrinsic {
kBitcast_SpecialIntrinsic,
kDegrees_SpecialIntrinsic,
kDistance_SpecialIntrinsic,
kDot_SpecialIntrinsic,
kLength_SpecialIntrinsic,
kMod_SpecialIntrinsic,
kNormalize_SpecialIntrinsic,
kRadians_SpecialIntrinsic,
kTexture_SpecialIntrinsic,
};

2
tests/sksl/intrinsics/golden/Degrees.metal
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@ -11,6 +11,6 @@ struct Outputs {
fragment Outputs fragmentMain(Inputs _in [[stage_in]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
Outputs _outputStruct;
thread Outputs* _out = &_outputStruct;
_out->sk_FragColor.x = degrees(_in.a);
_out->sk_FragColor.x = ((_in.a) * 57.2957795);
return *_out;
}

2
tests/sksl/intrinsics/golden/Radians.metal
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@ -11,6 +11,6 @@ struct Outputs {
fragment Outputs fragmentMain(Inputs _in [[stage_in]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
Outputs _outputStruct;
thread Outputs* _out = &_outputStruct;
_out->sk_FragColor.x = radians(_in.a);
_out->sk_FragColor.x = ((_in.a) * 0.0174532925);
return *_out;
}