StuffHEADmain

1 files changed, 155 insertions, 0 deletions

diff --git a/shader.metal b/shader.metal
new file mode 100644
index 0000000..3b5943c
--- /dev/null
+++ b/shader.metal
@@ -0,0 +1,155 @@
+// language: metal1.0
+#include <metal_stdlib>
+#include <simd/simd.h>
+
+using metal::uint;
+
+struct VertexInput {
+    metal::float2 position;
+    metal::float2 curve_uv;
+    metal::float2 color_uv;
+    char _pad3[8];
+    metal::float4 color1_;
+    metal::float4 color2_;
+    metal::float4 color3_;
+    metal::float4 color4_;
+    metal::float2 normal_uv;
+    char _pad8[8];
+    metal::float3 normal1_;
+    metal::float3 normal2_;
+    metal::float3 normal3_;
+    metal::float3 normal4_;
+};
+struct VertexOutput {
+    metal::float4 position;
+    metal::float2 curve_uv;
+    metal::float2 color_uv;
+    metal::float4 color1_;
+    metal::float4 color2_;
+    metal::float4 color3_;
+    metal::float4 color4_;
+    metal::float2 normal_uv;
+    char _pad8[8];
+    metal::float3 normal1_;
+    metal::float3 normal2_;
+    metal::float3 normal3_;
+    metal::float3 normal4_;
+};
+constant float SQRT_2_ = 0.70710677;
+
+float square(
+    float in
+) {
+    return in * in;
+}
+
+float cube(
+    float in_1
+) {
+    return (in_1 * in_1) * in_1;
+}
+
+metal::float3 lerp(
+    metal::float3 a,
+    metal::float3 b,
+    float t
+) {
+    return ((b - a) * t) + a;
+}
+
+metal::float3 oklab_to_linear_srgb(
+    metal::float3 color
+) {
+    float _e10 = cube((color.x + (0.39633778 * color.y)) + (0.21580376 * color.z));
+    float _e20 = cube((color.x - (0.105561346 * color.y)) - (0.06385417 * color.z));
+    float _e30 = cube((color.x - (0.08948418 * color.y)) - (1.2914855 * color.z));
+    return metal::float3(((4.0767417 * _e10) - (3.3077116 * _e20)) + (0.23096994 * _e30), ((-1.268438 * _e10) + (2.6097574 * _e20)) - (0.34131938 * _e30), ((-0.0041960864 * _e10) - (0.7034186 * _e20)) + (1.7076147 * _e30));
+}
+
+struct vs_mainInput {
+    metal::float2 position [[attribute(0)]];
+    metal::float2 curve_uv [[attribute(1)]];
+    metal::float2 color_uv [[attribute(2)]];
+    metal::float4 color1_ [[attribute(3)]];
+    metal::float4 color2_ [[attribute(4)]];
+    metal::float4 color3_ [[attribute(5)]];
+    metal::float4 color4_ [[attribute(6)]];
+    metal::float2 normal_uv [[attribute(7)]];
+    metal::float3 normal1_ [[attribute(8)]];
+    metal::float3 normal2_ [[attribute(9)]];
+    metal::float3 normal3_ [[attribute(10)]];
+    metal::float3 normal4_ [[attribute(11)]];
+};
+struct vs_mainOutput {
+    metal::float4 position [[position]];
+    metal::float2 curve_uv [[user(loc0), center_perspective]];
+    metal::float2 color_uv [[user(loc1), center_perspective]];
+    metal::float4 color1_ [[user(loc2), center_perspective]];
+    metal::float4 color2_ [[user(loc3), center_perspective]];
+    metal::float4 color3_ [[user(loc4), center_perspective]];
+    metal::float4 color4_ [[user(loc5), center_perspective]];
+    metal::float2 normal_uv [[user(loc6), center_perspective]];
+    metal::float3 normal1_ [[user(loc7), center_perspective]];
+    metal::float3 normal2_ [[user(loc8), center_perspective]];
+    metal::float3 normal3_ [[user(loc9), center_perspective]];
+    metal::float3 normal4_ [[user(loc10), center_perspective]];
+};
+vertex vs_mainOutput vs_main(
+  vs_mainInput varyings [[stage_in]]
+) {
+    const VertexInput vertex_ = { varyings.position, varyings.curve_uv, varyings.color_uv, {}, varyings.color1_, varyings.color2_, varyings.color3_, varyings.color4_, varyings.normal_uv, {}, varyings.normal1_, varyings.normal2_, varyings.normal3_, varyings.normal4_ };
+    VertexOutput out = {};
+    out.position = metal::float4(vertex_.position, 1.0, 1.0);
+    out.curve_uv = vertex_.curve_uv;
+    out.color_uv = vertex_.color_uv;
+    out.color1_ = vertex_.color1_;
+    out.color2_ = vertex_.color2_;
+    out.color3_ = vertex_.color3_;
+    out.color4_ = vertex_.color4_;
+    out.normal_uv = vertex_.normal_uv;
+    out.normal1_ = vertex_.normal1_;
+    out.normal2_ = vertex_.normal2_;
+    out.normal3_ = vertex_.normal3_;
+    out.normal4_ = vertex_.normal4_;
+    VertexOutput _e29 = out;
+    const auto _tmp = _e29;
+    return vs_mainOutput { _tmp.position, _tmp.curve_uv, _tmp.color_uv, _tmp.color1_, _tmp.color2_, _tmp.color3_, _tmp.color4_, _tmp.normal_uv, _tmp.normal1_, _tmp.normal2_, _tmp.normal3_, _tmp.normal4_ };
+}
+
+
+struct fs_mainInput {
+    metal::float2 curve_uv [[user(loc0), center_perspective]];
+    metal::float2 color_uv [[user(loc1), center_perspective]];
+    metal::float4 color1_ [[user(loc2), center_perspective]];
+    metal::float4 color2_ [[user(loc3), center_perspective]];
+    metal::float4 color3_ [[user(loc4), center_perspective]];
+    metal::float4 color4_ [[user(loc5), center_perspective]];
+    metal::float2 normal_uv [[user(loc6), center_perspective]];
+    metal::float3 normal1_ [[user(loc7), center_perspective]];
+    metal::float3 normal2_ [[user(loc8), center_perspective]];
+    metal::float3 normal3_ [[user(loc9), center_perspective]];
+    metal::float3 normal4_ [[user(loc10), center_perspective]];
+};
+struct fs_mainOutput {
+    metal::float4 member_1 [[color(0)]];
+};
+fragment fs_mainOutput fs_main(
+  fs_mainInput varyings_1 [[stage_in]]
+, metal::float4 position [[position]]
+) {
+    const VertexOutput vertex_1 = { position, varyings_1.curve_uv, varyings_1.color_uv, varyings_1.color1_, varyings_1.color2_, varyings_1.color3_, varyings_1.color4_, varyings_1.normal_uv, {}, varyings_1.normal1_, varyings_1.normal2_, varyings_1.normal3_, varyings_1.normal4_ };
+    float radius = metal::length(vertex_1.curve_uv);
+    float _e3 = metal::dfdx(radius);
+    float _e4 = metal::dfdy(radius);
+    float afwidth = metal::length(metal::float2(_e3, _e4)) * SQRT_2_;
+    float in_circle = 1.0 - metal::smoothstep(1.0 - afwidth, 1.0 + afwidth, radius);
+    metal::float3 _e22 = lerp(vertex_1.color1_.xyz, vertex_1.color2_.xyz, metal::length(vertex_1.color_uv));
+    metal::float3 _e23 = oklab_to_linear_srgb(_e22);
+    metal::float3 _e32 = lerp(vertex_1.color3_.xyz, vertex_1.color4_.xyz, 1.0 - metal::length(vertex_1.color_uv));
+    metal::float3 _e33 = oklab_to_linear_srgb(_e32);
+    metal::float3 _e34 = lerp(_e33, _e23, in_circle);
+    metal::float3 _e39 = lerp(vertex_1.normal1_, vertex_1.normal2_, metal::length(vertex_1.normal_uv));
+    metal::float3 _e46 = lerp(vertex_1.normal3_, vertex_1.normal4_, 1.0 - metal::length(vertex_1.normal_uv));
+    metal::float3 _e47 = lerp(_e46, _e39, in_circle);
+    return fs_mainOutput { metal::float4(_e34, in_circle) };
+}