cbuffer _95
{
    int4 _95_mipOffsets : packoffset(c0);
    uint2 _95_virtualTextureSize : packoffset(c1);
    uint2 _95_physicalTextureSize : packoffset(c1.z);
    uint _95_logTileSize : packoffset(c2);
    uint _95_tileSize : packoffset(c2.y);
    uint _95_tileBorder : packoffset(c2.z);
    float _95_rcpTileSize : packoffset(c2.w);
    float2 _95_physicalPixelTexCoordSize : packoffset(c3);
    float2 _95_physicalTileTexCoordSize : packoffset(c3.z);
    float2 _95_physicalInnerTileTexCoordSize : packoffset(c4);
    float2 _95_tileBorderTexCoordSize : packoffset(c4.z);
};
Texture2D<float4> tex : register(t0);
SamplerState _tex_sampler : register(s0);
Buffer<uint4> TexturePageTable : register(t1);

static float4 fragColor;
static float2 vUV;
static float4 vTint;

struct SPIRV_Cross_Input
{
    float2 vUV : TEXCOORD0;
    float4 vTint : TEXCOORD1;
};

struct SPIRV_Cross_Output
{
    float4 fragColor : SV_Target0;
};

int derpMipMapLevel(float2 uv)
{
    float2 dx_vtc = ddx(uv);
    float2 dy_vtc = ddy(uv);
    float scaleSqr = min(dx_vtc.x * dx_vtc.x, dy_vtc.y * dy_vtc.y);
    return int(scaleSqr);
}

float rcp_power_of_two(uint p)
{
    return asfloat((127u - p) << uint(23));
}

float4 virtualTexture(Texture2D<float4> physicalTexture, SamplerState _physicalTexture_sampler, Buffer<uint4> pageTable, float2 texCoord)
{
    float2 param = texCoord;
    int derpMip = derpMipMapLevel(param);
    int _76;
    if (derpMip < 4)
    {
        _76 = 0;
    }
    else
    {
        _76 = (derpMip < 16) ? 1 : 2;
    }
    uint mipLevel = uint(_76);
    float2 uv = texCoord * _95_rcpTileSize;
    int pageMipLevelOffset = _95_mipOffsets[mipLevel];
    float virtualTextureRowLenght = float(_95_virtualTextureSize.x >> (_95_logTileSize + mipLevel));
    uint param_1 = mipLevel;
    float2 virtualPage = floor(uv * rcp_power_of_two(param_1));
    int pageID = pageMipLevelOffset + int(virtualPage.x + (virtualPage.y * virtualTextureRowLenght));
    uint4 physicalTilePageData = pageTable.Load(pageID);
    uint2 physicalPage = physicalTilePageData.xy;
    mipLevel = physicalTilePageData.w;
    uint param_2 = mipLevel;
    float2 offset = (frac(uv * rcp_power_of_two(param_2)) * _95_physicalInnerTileTexCoordSize) + _95_tileBorderTexCoordSize;
    float2 physicalUV = (float2(physicalPage) * _95_physicalTileTexCoordSize) + offset;
    return physicalTexture.Sample(_physicalTexture_sampler, physicalUV);
}

void frag_main()
{
    float2 param = vUV;
    fragColor = virtualTexture(tex, _tex_sampler, TexturePageTable, param) * vTint;
}

SPIRV_Cross_Output main(SPIRV_Cross_Input stage_input)
{
    vUV = stage_input.vUV;
    vTint = stage_input.vTint;
    frag_main();
    SPIRV_Cross_Output stage_output;
    stage_output.fragColor = fragColor;
    return stage_output;
}