0f37907ac7
This CL is conceptually a revert of http://review.skia.org/320258, although the code has changed shape a bit since that CL was landed. This fix was too aggressive, and can lead to functions being dead- stripped while they still have an active reference. Change-Id: I6ce8b0ad9cc2a42e8be8cb10d3a8219149eca6aa Bug: skia:10776 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/325462 Commit-Queue: John Stiles <johnstiles@google.com> Commit-Queue: Ethan Nicholas <ethannicholas@google.com> Auto-Submit: John Stiles <johnstiles@google.com> Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
56 lines
1.9 KiB
Metal
56 lines
1.9 KiB
Metal
#include <metal_stdlib>
|
|
#include <simd/simd.h>
|
|
using namespace metal;
|
|
struct Inputs {
|
|
float4 src;
|
|
float4 dst;
|
|
};
|
|
struct Outputs {
|
|
float4 sk_FragColor [[color(0)]];
|
|
};
|
|
|
|
|
|
float _guarded_divide(float n, float d) {
|
|
return n / d;
|
|
}
|
|
float _soft_light_component(float2 s, float2 d) {
|
|
if (2.0 * s.x <= s.y) {
|
|
float _1_guarded_divide;
|
|
float _2_n = (d.x * d.x) * (s.y - 2.0 * s.x);
|
|
{
|
|
_1_guarded_divide = _2_n / d.y;
|
|
}
|
|
return (_1_guarded_divide + (1.0 - d.y) * s.x) + d.x * ((-s.y + 2.0 * s.x) + 1.0);
|
|
|
|
} else if (4.0 * d.x <= d.y) {
|
|
float DSqd = d.x * d.x;
|
|
float DCub = DSqd * d.x;
|
|
float DaSqd = d.y * d.y;
|
|
float DaCub = DaSqd * d.y;
|
|
float _3_guarded_divide;
|
|
float _4_n = ((DaSqd * (s.x - d.x * ((3.0 * s.y - 6.0 * s.x) - 1.0)) + ((12.0 * d.y) * DSqd) * (s.y - 2.0 * s.x)) - (16.0 * DCub) * (s.y - 2.0 * s.x)) - DaCub * s.x;
|
|
{
|
|
_3_guarded_divide = _4_n / DaSqd;
|
|
}
|
|
return _3_guarded_divide;
|
|
|
|
} else {
|
|
return ((d.x * ((s.y - 2.0 * s.x) + 1.0) + s.x) - sqrt(d.y * d.x) * (s.y - 2.0 * s.x)) - d.y * s.x;
|
|
}
|
|
}
|
|
float4 blend_soft_light(float4 src, float4 dst) {
|
|
return dst.w == 0.0 ? src : float4(_soft_light_component(src.xw, dst.xw), _soft_light_component(src.yw, dst.yw), _soft_light_component(src.zw, dst.zw), src.w + (1.0 - src.w) * dst.w);
|
|
}
|
|
fragment Outputs fragmentMain(Inputs _in [[stage_in]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
|
|
Outputs _outputStruct;
|
|
thread Outputs* _out = &_outputStruct;
|
|
float4 _0_blend_soft_light;
|
|
{
|
|
_0_blend_soft_light = _in.dst.w == 0.0 ? _in.src : float4(_soft_light_component(_in.src.xw, _in.dst.xw), _soft_light_component(_in.src.yw, _in.dst.yw), _soft_light_component(_in.src.zw, _in.dst.zw), _in.src.w + (1.0 - _in.src.w) * _in.dst.w);
|
|
}
|
|
|
|
_out->sk_FragColor = _0_blend_soft_light;
|
|
|
|
return *_out;
|
|
}
|