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skia2/tests/sksl/shared/GaussianBlur.metal
John Stiles 511c500ad4 Avoid generating unused variables in the Inliner. 
These variables were later being eliminated by the dead-code-elimination
pass, so you can't see them directly in the final output, but removing
them affects the name mangling off all future symbols, so it causes an
enormous ripple effect in the diff. And of course, it's a waste of time
and memory to synthesize IRNodes just to destroy them later.

If we disable control-flow analysis, we lose the dead-code-elimination
pass entirely; this change is also beneficial for emitting better code
when optimizations are turned off.

Change-Id: I882b3be4f3fd99b77d99b6abe128f26bb9252c89
Bug: skia:11319
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/375776
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
2021-02-25 19:18:19 +00:00

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#include <metal_stdlib>
#include <simd/simd.h>
using namespace metal;
struct Inputs {
float2 vLocalCoord_Stage0 [[user(locn0)]];
};
struct Outputs {
float4 sk_FragColor [[color(0)]];
};
struct uniformBuffer {
float4 sk_RTAdjust;
float2 uIncrement_Stage1_c0;
char pad0[8];
array<float4, 7> uKernel_Stage1_c0;
float3x3 umatrix_Stage1_c0_c0;
float4 uborder_Stage1_c0_c0_c0;
float4 usubset_Stage1_c0_c0_c0;
float4 unorm_Stage1_c0_c0_c0;
};
struct Globals {
constant uniformBuffer* _anonInterface0;
texture2d<float> uTextureSampler_0_Stage1;
sampler uTextureSampler_0_Stage1Smplr;
};
float4 MatrixEffect_Stage1_c0_c0(thread Globals& _globals, float4 _input, float2 _coords) {
float2 _0_coords = (_globals._anonInterface0->umatrix_Stage1_c0_c0 * float3(_coords, 1.0)).xy;
float2 _1_inCoord = _0_coords;
_1_inCoord *= _globals._anonInterface0->unorm_Stage1_c0_c0_c0.xy;
float2 _2_subsetCoord;
_2_subsetCoord.x = _1_inCoord.x;
_2_subsetCoord.y = _1_inCoord.y;
float2 _3_clampedCoord;
_3_clampedCoord = _2_subsetCoord;
float4 _4_textureColor = _globals.uTextureSampler_0_Stage1.sample(_globals.uTextureSampler_0_Stage1Smplr, _3_clampedCoord * _globals._anonInterface0->unorm_Stage1_c0_c0_c0.zw);
float _5_snappedX = floor(_1_inCoord.x + 0.0010000000474974513) + 0.5;
if (_5_snappedX < _globals._anonInterface0->usubset_Stage1_c0_c0_c0.x || _5_snappedX > _globals._anonInterface0->usubset_Stage1_c0_c0_c0.z) {
_4_textureColor = _globals._anonInterface0->uborder_Stage1_c0_c0_c0;
}
return _4_textureColor;
}
fragment Outputs fragmentMain(Inputs _in [[stage_in]], texture2d<float> uTextureSampler_0_Stage1[[texture(0)]], sampler uTextureSampler_0_Stage1Smplr[[sampler(0)]], constant uniformBuffer& _anonInterface0 [[buffer(0)]], bool _frontFacing [[front_facing]], float4 _fragCoord [[position]]) {
Globals _globals{&_anonInterface0, uTextureSampler_0_Stage1, uTextureSampler_0_Stage1Smplr};
(void)_globals;
Outputs _out;
(void)_out;
float4 output_Stage1;
float4 _6_output;
_6_output = float4(0.0, 0.0, 0.0, 0.0);
float2 _7_coord = _in.vLocalCoord_Stage0 - 12.0 * _globals._anonInterface0->uIncrement_Stage1_c0;
float2 _8_coordSampled = float2(0.0, 0.0);
_8_coordSampled = _7_coord;
_6_output += MatrixEffect_Stage1_c0_c0(_globals, float4(1.0), _8_coordSampled) * _globals._anonInterface0->uKernel_Stage1_c0[0].x;
_7_coord += _globals._anonInterface0->uIncrement_Stage1_c0;
_8_coordSampled = _7_coord;
_6_output += MatrixEffect_Stage1_c0_c0(_globals, float4(1.0), _8_coordSampled) * _globals._anonInterface0->uKernel_Stage1_c0[0].y;
_7_coord += _globals._anonInterface0->uIncrement_Stage1_c0;
_8_coordSampled = _7_coord;
_6_output += MatrixEffect_Stage1_c0_c0(_globals, float4(1.0), _8_coordSampled) * _globals._anonInterface0->uKernel_Stage1_c0[0].z;
_7_coord += _globals._anonInterface0->uIncrement_Stage1_c0;
_8_coordSampled = _7_coord;
_6_output += MatrixEffect_Stage1_c0_c0(_globals, float4(1.0), _8_coordSampled) * _globals._anonInterface0->uKernel_Stage1_c0[0].w;
_7_coord += _globals._anonInterface0->uIncrement_Stage1_c0;
_8_coordSampled = _7_coord;
_6_output += MatrixEffect_Stage1_c0_c0(_globals, float4(1.0), _8_coordSampled) * _globals._anonInterface0->uKernel_Stage1_c0[1].x;
_7_coord += _globals._anonInterface0->uIncrement_Stage1_c0;
_8_coordSampled = _7_coord;
_6_output += MatrixEffect_Stage1_c0_c0(_globals, float4(1.0), _8_coordSampled) * _globals._anonInterface0->uKernel_Stage1_c0[1].y;
_7_coord += _globals._anonInterface0->uIncrement_Stage1_c0;
_8_coordSampled = _7_coord;
_6_output += MatrixEffect_Stage1_c0_c0(_globals, float4(1.0), _8_coordSampled) * _globals._anonInterface0->uKernel_Stage1_c0[1].z;
_7_coord += _globals._anonInterface0->uIncrement_Stage1_c0;
_8_coordSampled = _7_coord;
_6_output += MatrixEffect_Stage1_c0_c0(_globals, float4(1.0), _8_coordSampled) * _globals._anonInterface0->uKernel_Stage1_c0[1].w;
_7_coord += _globals._anonInterface0->uIncrement_Stage1_c0;
_8_coordSampled = _7_coord;
_6_output += MatrixEffect_Stage1_c0_c0(_globals, float4(1.0), _8_coordSampled) * _globals._anonInterface0->uKernel_Stage1_c0[2].x;
_7_coord += _globals._anonInterface0->uIncrement_Stage1_c0;
_8_coordSampled = _7_coord;
_6_output += MatrixEffect_Stage1_c0_c0(_globals, float4(1.0), _8_coordSampled) * _globals._anonInterface0->uKernel_Stage1_c0[2].y;
_7_coord += _globals._anonInterface0->uIncrement_Stage1_c0;
_8_coordSampled = _7_coord;
_6_output += MatrixEffect_Stage1_c0_c0(_globals, float4(1.0), _8_coordSampled) * _globals._anonInterface0->uKernel_Stage1_c0[2].z;
_7_coord += _globals._anonInterface0->uIncrement_Stage1_c0;
_8_coordSampled = _7_coord;
_6_output += MatrixEffect_Stage1_c0_c0(_globals, float4(1.0), _8_coordSampled) * _globals._anonInterface0->uKernel_Stage1_c0[2].w;
_7_coord += _globals._anonInterface0->uIncrement_Stage1_c0;
_8_coordSampled = _7_coord;
_6_output += MatrixEffect_Stage1_c0_c0(_globals, float4(1.0), _8_coordSampled) * _globals._anonInterface0->uKernel_Stage1_c0[3].x;
_7_coord += _globals._anonInterface0->uIncrement_Stage1_c0;
_8_coordSampled = _7_coord;
_6_output += MatrixEffect_Stage1_c0_c0(_globals, float4(1.0), _8_coordSampled) * _globals._anonInterface0->uKernel_Stage1_c0[3].y;
_7_coord += _globals._anonInterface0->uIncrement_Stage1_c0;
_8_coordSampled = _7_coord;
_6_output += MatrixEffect_Stage1_c0_c0(_globals, float4(1.0), _8_coordSampled) * _globals._anonInterface0->uKernel_Stage1_c0[3].z;
_7_coord += _globals._anonInterface0->uIncrement_Stage1_c0;
_8_coordSampled = _7_coord;
_6_output += MatrixEffect_Stage1_c0_c0(_globals, float4(1.0), _8_coordSampled) * _globals._anonInterface0->uKernel_Stage1_c0[3].w;
_7_coord += _globals._anonInterface0->uIncrement_Stage1_c0;
_8_coordSampled = _7_coord;
_6_output += MatrixEffect_Stage1_c0_c0(_globals, float4(1.0), _8_coordSampled) * _globals._anonInterface0->uKernel_Stage1_c0[4].x;
_7_coord += _globals._anonInterface0->uIncrement_Stage1_c0;
_8_coordSampled = _7_coord;
_6_output += MatrixEffect_Stage1_c0_c0(_globals, float4(1.0), _8_coordSampled) * _globals._anonInterface0->uKernel_Stage1_c0[4].y;
_7_coord += _globals._anonInterface0->uIncrement_Stage1_c0;
_8_coordSampled = _7_coord;
_6_output += MatrixEffect_Stage1_c0_c0(_globals, float4(1.0), _8_coordSampled) * _globals._anonInterface0->uKernel_Stage1_c0[4].z;
_7_coord += _globals._anonInterface0->uIncrement_Stage1_c0;
_8_coordSampled = _7_coord;
_6_output += MatrixEffect_Stage1_c0_c0(_globals, float4(1.0), _8_coordSampled) * _globals._anonInterface0->uKernel_Stage1_c0[4].w;
_7_coord += _globals._anonInterface0->uIncrement_Stage1_c0;
_8_coordSampled = _7_coord;
_6_output += MatrixEffect_Stage1_c0_c0(_globals, float4(1.0), _8_coordSampled) * _globals._anonInterface0->uKernel_Stage1_c0[5].x;
_7_coord += _globals._anonInterface0->uIncrement_Stage1_c0;
_8_coordSampled = _7_coord;
_6_output += MatrixEffect_Stage1_c0_c0(_globals, float4(1.0), _8_coordSampled) * _globals._anonInterface0->uKernel_Stage1_c0[5].y;
_7_coord += _globals._anonInterface0->uIncrement_Stage1_c0;
_8_coordSampled = _7_coord;
_6_output += MatrixEffect_Stage1_c0_c0(_globals, float4(1.0), _8_coordSampled) * _globals._anonInterface0->uKernel_Stage1_c0[5].z;
_7_coord += _globals._anonInterface0->uIncrement_Stage1_c0;
_8_coordSampled = _7_coord;
_6_output += MatrixEffect_Stage1_c0_c0(_globals, float4(1.0), _8_coordSampled) * _globals._anonInterface0->uKernel_Stage1_c0[5].w;
_7_coord += _globals._anonInterface0->uIncrement_Stage1_c0;
_8_coordSampled = _7_coord;
_6_output += MatrixEffect_Stage1_c0_c0(_globals, float4(1.0), _8_coordSampled) * _globals._anonInterface0->uKernel_Stage1_c0[6].x;
_7_coord += _globals._anonInterface0->uIncrement_Stage1_c0;
output_Stage1 = _6_output;
{
_out.sk_FragColor = output_Stage1;
}
return _out;
}
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