wgpu/tests/out/shadow.msl.snap

---
source: tests/snapshots.rs
expression: msl
---
#include <metal_stdlib>
#include <simd/simd.h>

typedef metal::uint4 type;

struct Globals {
    type num_lights;
};

typedef metal::float4x4 type1;

typedef metal::float4 type2;

struct Light {
    type1 proj;
    type2 pos;
    type2 color;
};

typedef Light type3[1];

struct Lights {
    type3 data;
};

typedef metal::depth2d_array<float, metal::access::sample> type4;

typedef metal::sampler type5;

typedef uint type6;

typedef float type7;

typedef metal::float2 type8;

typedef int type9;

typedef metal::float3 type10;

typedef bool type11;

type7 fetch_shadow(
    type6 light_id,
    type2 homogeneous_coords
) {
    if ((homogeneous_coords.w <= 0.0)) {
        return 1.0;
    }
    return t_shadow.sample_compare(sampler_shadow, (((metal::float2(homogeneous_coords.x, homogeneous_coords.y) * metal::float2(0.5, -0.5)) * (1.0 / homogeneous_coords.w)) + metal::float2(0.5, 0.5)), static_cast<int>(light_id), (homogeneous_coords.z * (1.0 / homogeneous_coords.w)));
}

struct fs_mainInput {
    type10 in_normal_fs [[user(loc0)]];
    type2 in_position_fs [[user(loc1)]];
};

struct fs_mainOutput {
    type2 out_color_fs [[color(0)]];
};

fragment fs_mainOutput fs_main(
    fs_mainInput input [[stage_in]],
    constant Globals& u_globals [[buffer(0)]],
    constant Lights& s_lights [[buffer(1)]],
    type4 t_shadow [[texture(0)]],
    type5 sampler_shadow [[sampler(0)]]
) {
    fs_mainOutput output;
    type10 color1 = type10(0.05, 0.05, 0.05);
    type6 i = 0u;
    bool loop_init = true;
    while(true) {
        if (!loop_init) {
            i = (i + 1u);
        }
        loop_init = false;
        if ((i >= metal::min(u_globals.num_lights.x, 10u))) {
            break;
        }
        color1 = (color1 + ((fetch_shadow(i, (s_lights.data[i].proj * input.in_position_fs)) * metal::max(0.0, metal::dot(metal::normalize(input.in_normal_fs), metal::normalize((metal::float3(s_lights.data[i].pos.x, s_lights.data[i].pos.y, s_lights.data[i].pos.z) - metal::float3(input.in_position_fs.x, input.in_position_fs.y, input.in_position_fs.z)))))) * metal::float3(s_lights.data[i].color.x, s_lights.data[i].color.y, s_lights.data[i].color.z)));
    }
    output.out_color_fs = metal::float4(color1, 1.0);
    return output;
}