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/******************************************************************************
 *     Copyright 2024 NVIDIA Corporation. All rights reserved.
 ******************************************************************************
 
Permission is hereby granted by NVIDIA Corporation ("NVIDIA"), free of charge,
to any person obtaining a copy of the sample definition code that uses our 
Material Definition Language (the "MDL Materials"), to reproduce and distribute
the MDL Materials, including without limitation the rights to use, copy, merge,
publish, distribute, and sell modified and unmodified copies of the MDL 
Materials, and to permit persons to whom the MDL Materials is furnished to do
so, in all cases solely for use with NVIDIA's Material Definition Language,
subject to the following further conditions:

1. The above copyright notices, this list of conditions, and the disclaimer
that follows shall be retained in all copies of one or more of the MDL
Materials, including in any software with which the MDL Materials are bundled,
redistributed, and/or sold, and included either as stand-alone text files,
human-readable headers or in the appropriate machine-readable metadata fields
within text or binary files as long as those fields can be easily viewed by the
user, as applicable.
2. The name of NVIDIA shall not be used to promote, endorse or advertise any 
Modified Version without specific prior written permission, except a) to comply
 with the notice requirements otherwise contained herein; or b) to acknowledge
the contribution(s) of NVIDIA.

THE MDL MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT,
TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR 
ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY GENERAL, SPECIAL, 
INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN AN ACTION OF 
CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR INABILITY TO USE
THE MDL MATERIALS OR FROM OTHER DEALINGS IN THE MDL MATERIALS.
*/


mdl 1.5;
import ::anno::*;
import ::base::*;
import ::math::*;
import ::state::*;
import ::std::*;
import ::tex::*;
import ::df::*;
import ::nvidia::core_definitions::*;


const string COPYRIGHT = 
" Copyright 2024 NVIDIA Corporation. All rights reserved.\n"
" MDL MATERIALS ARE PROVIDED PURSUANT TO AN END USER LICENSE  AGREEMENT,\n"
" WHICH WAS ACCEPTED IN ORDER TO GAIN ACCESS TO THIS FILE.  IN PARTICULAR,\n" 
" THE MDL MATERIALS ARE PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND,\n"
" EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF\n"
" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF\n" 
" COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL NVIDIA\n"
" CORPORATION BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY\n"
" GENERAL, SPECIAL,  INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN\n"
" AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR\n"
" INABILITY TO USE THE MDL MATERIALS OR FROM OTHER DEALINGS IN THE MDL MATERIALS.\n";

const string DESCRIPTION = "An aggregate stone material with an additional moss layer growing on top.";


float3 hsv2rgb(float3 c)
{
	float4 K = float4(1.0, 2.0/3.0, 1.0/3.0, 3.0);
    float3 p = ::math::abs(::math::frac(float3(c.x) + float3(K.x, K.y, K.z)) * 6.0 - float3(K.w));
    return c.z * ::math::lerp(float3(K.x), ::math::clamp(p - float3(K.x), 0.0, 1.0), c.y);
}


color hue_shift(
	color input = color(1.0, 0.0, 0.0), 
	float hue_adjust = 0.0f
)
{
	float3 in_color = float3(input);
	float3  kRGBToYPrime = float3 (0.299, 0.587, 0.114);
    float3  kRGBToI      = float3 (0.596, -0.275, -0.321);
    float3  kRGBToQ      = float3 (0.212, -0.523, 0.311);

	
    float3  kYIQToR     = float3 (1.0, 0.956, 0.621);
    float3  kYIQToG     = float3 (1.0, -0.272, -0.647);
    float3  kYIQToB     = float3 (1.0, -1.107, 1.704);

    float   YPrime  = ::math::dot(in_color, kRGBToYPrime);
    float   I       = ::math::dot(in_color, kRGBToI);
    float   Q       = ::math::dot(in_color, kRGBToQ);
    float   hue     = ::math::atan2(Q, I);
    float   chroma  = ::math::sqrt(I * I + Q * Q);

    hue += hue_adjust;

    Q = chroma * ::math::sin(hue);
    I = chroma * ::math::cos(hue);

    float3    yIQ   = float3 (YPrime, I, Q);

    return color(::math::dot (yIQ, kYIQToR),::math::dot (yIQ, kYIQToG), ::math::dot (yIQ, kYIQToB) );
}


float remap(float input, float low_1, float high_1, float low_2, float high_2)
{
	return low_2 + ((input - low_1) * (high_2 - low_2))/(high_1 - low_1);
}

float remap_xy_to_0_1(float input, float x, float y)
{
	return (input - x)/(y - x);
}

float histogram_scan_small(float input, float width, float position)
{	
	return ::math::clamp(
				remap_xy_to_0_1(input,
					::math::lerp(0.0, 1.0 - width, position),
					::math::lerp(width, 1.0 , position)),
				0.0,
				1.0);
}


float histogram_scan_big(float input, float width, float position)
{
	return ::math::clamp(
				remap_xy_to_0_1(input,
					::math::lerp(-width, 1.0, position),
					::math::lerp(0.0, 1.0 + width, position)),
				0.0,
				1.0);
}

float3 transform_internal_to_tangent(float3 n)
[[ 
    ::anno::hidden() 
]]
{
    return
        n.x* float3(::state::texture_tangent_u(0).x,::state::texture_tangent_v(0).x,::state::normal().x)+
        n.y* float3(::state::texture_tangent_u(0).y,::state::texture_tangent_v(0).y,::state::normal().y)+
        n.z* float3(::state::texture_tangent_u(0).z,::state::texture_tangent_v(0).z,::state::normal().z);
}

// Returns the normal n in internal space, given n is in tangent space.
float3 transform_tangent_to_internal(float3 n)
[[ 
    ::anno::hidden() 
]]
{
    return  ::state::texture_tangent_u(0) * n.x +
            ::state::texture_tangent_v(0) * n.y +
            ::state::normal() * n.z ;
}



float3 add_detail_normal(float3 nd = ::state::normal(), float3 n = ::state::normal())
{
    // http://blog.selfshadow.com/publications/blending-in-detail/
    float3 n_t = transform_internal_to_tangent(n);
    float3 nd_t = transform_internal_to_tangent(nd);

    n_t=n_t + float3(0.,0.,1.);
    nd_t = nd_t *  float3(-1.,-1.,1.);

    n = n_t*::math::dot(n_t, nd_t)/n_t.z - nd_t;
    return ::math::normalize(transform_tangent_to_internal(n));
}

float3 normalmap_normal(
	uniform texture_2d texture,
	float factor = 1.0,
	::base::texture_coordinate_info uvw = ::base::texture_coordinate_info()
)
{
	float3 lookup = (::tex::lookup_float3(texture, float2(uvw.position.x, uvw.position.y)) - 0.5) * (factor * 2.0);
	return ::math::normalize(uvw.tangent_u * lookup.x + uvw.tangent_v * lookup.y + ::state::normal());
}


float histogram_range(float input, float range, float position)
{	
	float low = ::math::clamp(1.0 - ::math::min(((1.0 - position) + range * 0.5), (1.0 - position) * 2), 0.0, 1.0);
	float high = ::math::clamp(::math::min((position + range * 0.5 ), position * 2.0), 0.0, 1.0);
	return ::math::lerp(low, high, input);
}

::base::texture_coordinate_info vmat_transform(
								uniform float2 translation = float2(0.0, 0.0),
								uniform float rotation     = 0.0,
								uniform float2 scaling     = float2(1.0, 1.0),
								uniform ::base::texture_coordinate_system system = ::base::texture_coordinate_uvw,
								uniform int uv_space       = 0
)
{
	float rotation_rad = (rotation * 3.1415926535897932384626433832f) / 180.f;
	float4x4 scale =
	float4x4(1.0 /scaling.x, 0.             ,  0. ,     0.,
			 0.            , 1.0 /scaling.y ,  0. ,     0.,
			 0.            , 0.             ,  1.0,     0.,
			 translation.x , translation.y  ,  0.0,     1.);

    float s = ::math::sin(rotation_rad);
    float c = ::math::cos(rotation_rad);
    float4x4 rotate =
	float4x4(  c  ,  -s   , 0.0 , 0.0,
			   s  ,   c   , 0.0 , 0.0,
			   0.0,   0.0 , 1.0 , 0.0,
			   0. ,   0.0 , 0.0 , 1.);
	
	return ::base::transform_coordinate(scale*rotate, ::base::coordinate_source(system, uv_space));
}

export material Ground_Aggregate_Exposed(
    float stone_brightness = 1.f [[
        ::anno::description("Adjusts the lightness of the stones and pebbles."),
        ::anno::display_name("Stone Brightness"),
		::anno::hard_range(0.0f, 1.0f),
        ::anno::in_group("Appearance", "Stone")
    ]],
    float pebble_tip_roughness = 0.f [[
        ::anno::description("Controls the roughness of the pebble tips."),
        ::anno::display_name("Pebble Tip Roughness"),
		::anno::hard_range(0.0f, 1.0f),
        ::anno::in_group("Appearance", "Stone")
    ]],
    float stones_bump_factor = 1.0f [[
        ::anno::description("Drives the bumpiness of the stones."),
        ::anno::display_name("Stone Bump Factor"),
		::anno::hard_range(0.0f, 1.0f),
        ::anno::in_group("Appearance", "Stone")
    ]],
    float moss_height_growth = 0.599000037f [[
        ::anno::description("Controls the growth of the moss material."),
        ::anno::display_name("Moss  Growth"),
		::anno::hard_range(0.0f, 1.0f),
        ::anno::in_group("Appearance", "Moss")
    ]],
    float evem_moss_distribution_amount = 0.423000008f [[
        ::anno::description("A lower value makes the moss grow more unevenly across the surface."),
        ::anno::display_name("Moss Coverage"),
		::anno::hard_range(0.0f, 1.0f),
        ::anno::in_group("Appearance", "Moss")
    ]],
    float moss_saturation = 0.0420000032f [[
        ::anno::description("Controls the saturation of the moss."),
        ::anno::display_name("Moss Saturation"),
		::anno::hard_range(0.0f, 1.0f),
        ::anno::in_group("Appearance", "Moss")
    ]],
    float moss_brightness = 0.78700006f [[
        ::anno::description("Adjusts the brightness of the moss."),
        ::anno::display_name("Moss Brightness"),
		::anno::hard_range(0.0f, 1.0f),
        ::anno::in_group("Appearance", "Moss")
    ]],
    float moss_moisture = 0.f [[
        ::anno::description("It describes how damp the moss is."),
        ::anno::display_name("Moss Moisture"),
		::anno::hard_range(0.0f, 1.0f),
        ::anno::in_group("Appearance", "Moss")
    ]],
    float moss_weight = 1.f [[
        ::anno::description("Decreasing this parameter makes the moss layer more transparent."),
        ::anno::display_name("Moss Weight"),
		::anno::hard_range(0.0f, 1.0f),
        ::anno::in_group("Appearance", "Moss")
    ]],
	// for some reason this parameter got exported twice form the substance graph, I 
	// could not yet figure out why
    // float moss_weight_1 = 1.f [[
        // ::anno::description("Decreasing this parameter makes the moss layer more transparent."),
        // ::anno::display_name("Moss Weight"),
        // ::anno::in_group("Appearance", "Moss")
    // ]],
    uniform float moss_bump_factor = 1.f [[
        ::anno::description("Determines the degree of bumpiness of the moss."),
        ::anno::display_name("Moss Bump Factor"),
		::anno::hard_range(0.0f, 1.0f),
        ::anno::in_group("Appearance", "Moss")
    ]],
    uniform float2 texture_translate = float2(0.f) [[
        ::anno::description("Controls the position of the texture."),
        ::anno::display_name("Translate"),
        ::anno::in_group("Transform")
    ]],
    uniform float texture_rotate = 0.f [[
        ::anno::description("Rotates angle of the texture in degrees."),
        ::anno::display_name("Rotate"),
        ::anno::in_group("Transform")
    ]],
    uniform float2 texture_scale = float2(0.5f) [[
        ::anno::description("Larger numbers increase the size."),
        ::anno::display_name("Scale"),
        ::anno::in_group("Transform"),
		::nvidia::core_definitions::dimension(float2(0.4, 0.4))
    ]],
    uniform int uv_space_index = 0 [[
        ::anno::description("Uses the selected UV Space."),
        ::anno::display_name("UV Space Index"),
        ::anno::in_group("Advanced")
    ]]
)
[[
    ::anno::display_name("Ground Aggregate Mossy"),
    ::anno::description(DESCRIPTION),
    ::anno::copyright_notice(COPYRIGHT),
    ::anno::author("NVIDIA vMaterials"),
	::anno::thumbnail("./.thumbs/Ground_Aggregate_Exposed.Ground_Aggregate_Exposed.png"),
	::anno::key_words(string[]("stone", "pebbles", "aggregate", "weathered", "rough", "construction", "architecture", "moss", "mossy", "nature", "layered", "outdoor", "ground", "multimaterial", "worn", "gray"))
]]
 = 
    let {
        bool tmp0 = false;
		float moss_weight_1 = 1.f;
		float moss_brightness_remap = moss_brightness * 2.0;
		
        material_surface tmp1(::df::custom_curve_layer(0.0299999993f, 1.f, 5.f, 1.f, ::df::microfacet_ggx_smith_bsdf(::math::lerp(::math::lerp(::math::lerp(0.459000021f, 1.f, ::base::file_texture(texture_2d("./textures/aggregate_exposed_rough.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono), 0.901000023f - ::math::clamp(remap(::base::file_texture(texture_2d("./textures/ground_aggregate_exposed_curv.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_average, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono, 0.5f, 1.f, 0.f, 1.f), 0.f, 1.f) * ::math::lerp(1.f, 0.f, pebble_tip_roughness), histogram_scan_small(::base::file_texture(texture_2d("./textures/aggregate_exposed_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_average, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono, 0.179000005f, 0.553000033f)), histogram_range(float3(::base::file_texture(texture_2d("./textures/moss_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.638283014f, 0.638283014f, 0.638283014f), ::base::mono_alpha, ::base::texture_coordinate_info(::state::texture_coordinate(0), ::state::texture_tangent_u(0), ::state::texture_tangent_v(0)), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 0.580000043f, ::math::lerp(0.800000012f, 0.180000007f, moss_moisture)), ::math::lerp(0.f, ::math::lerp(histogram_scan_big(::base::file_texture(texture_2d("./textures/HiLowNoise_D.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_average, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono, 0.379000008f, ::math::lerp(0.817000031f, 0.100000001f, evem_moss_distribution_amount)), 0.f, ::math::clamp(histogram_scan_big(::base::file_texture(texture_2d("./textures/aggregate_exposed_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_average, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono, 0.150000006f, ::math::lerp(0.200000003f, 0.680000007f, moss_height_growth)), 0.f, 1.f)), moss_weight_1)) * ::math::lerp(::math::lerp(::math::lerp(0.459000021f, 1.f, ::base::file_texture(texture_2d("./textures/aggregate_exposed_rough.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono), 0.901000023f - ::math::clamp(remap(::base::file_texture(texture_2d("./textures/ground_aggregate_exposed_curv.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_average, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono, 0.5f, 1.f, 0.f, 1.f), 0.f, 1.f) * ::math::lerp(1.f, 0.f, pebble_tip_roughness), histogram_scan_small(::base::file_texture(texture_2d("./textures/aggregate_exposed_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_average, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono, 0.179000005f, 0.553000033f)), histogram_range(float3(::base::file_texture(texture_2d("./textures/moss_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.638283014f, 0.638283014f, 0.638283014f), ::base::mono_alpha, ::base::texture_coordinate_info(::state::texture_coordinate(0), ::state::texture_tangent_u(0), ::state::texture_tangent_v(0)), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 0.580000043f, ::math::lerp(0.800000012f, 0.180000007f, moss_moisture)), ::math::lerp(0.f, ::math::lerp(histogram_scan_big(::base::file_texture(texture_2d("./textures/HiLowNoise_D.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_average, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono, 0.379000008f, ::math::lerp(0.817000031f, 0.100000001f, evem_moss_distribution_amount)), 0.f, ::math::clamp(histogram_scan_big(::base::file_texture(texture_2d("./textures/aggregate_exposed_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_average, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono, 0.150000006f, ::math::lerp(0.200000003f, 0.680000007f, moss_height_growth)), 0.f, 1.f)), moss_weight_1)), ::math::lerp(::math::lerp(::math::lerp(0.459000021f, 1.f, ::base::file_texture(texture_2d("./textures/aggregate_exposed_rough.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono), 0.901000023f - ::math::clamp(remap(::base::file_texture(texture_2d("./textures/ground_aggregate_exposed_curv.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_average, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono, 0.5f, 1.f, 0.f, 1.f), 0.f, 1.f) * ::math::lerp(1.f, 0.f, pebble_tip_roughness), histogram_scan_small(::base::file_texture(texture_2d("./textures/aggregate_exposed_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_average, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono, 0.179000005f, 0.553000033f)), histogram_range(float3(::base::file_texture(texture_2d("./textures/moss_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.638283014f, 0.638283014f, 0.638283014f), ::base::mono_alpha, ::base::texture_coordinate_info(::state::texture_coordinate(0), ::state::texture_tangent_u(0), ::state::texture_tangent_v(0)), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 0.580000043f, ::math::lerp(0.800000012f, 0.180000007f, moss_moisture)), ::math::lerp(0.f, ::math::lerp(histogram_scan_big(::base::file_texture(texture_2d("./textures/HiLowNoise_D.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_average, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono, 0.379000008f, ::math::lerp(0.817000031f, 0.100000001f, evem_moss_distribution_amount)), 0.f, ::math::clamp(histogram_scan_big(::base::file_texture(texture_2d("./textures/aggregate_exposed_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_average, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono, 0.150000006f, ::math::lerp(0.200000003f, 0.680000007f, moss_height_growth)), 0.f, 1.f)), moss_weight_1)) * ::math::lerp(::math::lerp(::math::lerp(0.459000021f, 1.f, ::base::file_texture(texture_2d("./textures/aggregate_exposed_rough.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono), 0.901000023f - ::math::clamp(remap(::base::file_texture(texture_2d("./textures/ground_aggregate_exposed_curv.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_average, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono, 0.5f, 1.f, 0.f, 1.f), 0.f, 1.f) * ::math::lerp(1.f, 0.f, pebble_tip_roughness), histogram_scan_small(::base::file_texture(texture_2d("./textures/aggregate_exposed_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_average, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono, 0.179000005f, 0.553000033f)), histogram_range(float3(::base::file_texture(texture_2d("./textures/moss_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(0.638283014f, 0.638283014f, 0.638283014f), ::base::mono_alpha, ::base::texture_coordinate_info(::state::texture_coordinate(0), ::state::texture_tangent_u(0), ::state::texture_tangent_v(0)), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint)[0], 0.580000043f, ::math::lerp(0.800000012f, 0.180000007f, moss_moisture)), ::math::lerp(0.f, ::math::lerp(histogram_scan_big(::base::file_texture(texture_2d("./textures/HiLowNoise_D.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_average, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono, 0.379000008f, ::math::lerp(0.817000031f, 0.100000001f, evem_moss_distribution_amount)), 0.f, ::math::clamp(histogram_scan_big(::base::file_texture(texture_2d("./textures/aggregate_exposed_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_average, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono, 0.150000006f, ::math::lerp(0.200000003f, 0.680000007f, moss_height_growth)), 0.f, 1.f)), moss_weight_1)), color(1.f, 1.f, 1.f), ::state::texture_tangent_u(0), ::df::scatter_reflect, ""), ::df::diffuse_reflection_bsdf(::math::lerp(::base::file_texture(texture_2d("./textures/aggregate_exposed_diff.jpg", ::tex::gamma_srgb), color(0.f, 0.f, 0.f), color(::math::lerp(stone_brightness, 0.400000006f, 0.75f)), ::base::mono_alpha, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint, hue_shift(nvidia::core_definitions::blend_colors(::base::file_texture(texture_2d("./textures/moss_diff.jpg", ::tex::gamma_srgb), color(0.f, 0.f, 0.f), color(0.638283014f, 0.638283014f, 0.638283014f), ::base::mono_alpha, ::base::texture_coordinate_info(::state::texture_coordinate(0), ::state::texture_tangent_u(0), ::state::texture_tangent_v(0)), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).tint, color(::math::pow(hsv2rgb(float3(0.2214614f, ::math::lerp(0.f, 0.699999988f, moss_saturation), ::math::lerp(0.175000012f, 0.699999988f, moss_brightness_remap))), 2.20000005f)), ::base::color_layer_overlay, 1.f).tint, 5.95100021f), moss_weight * ::math::lerp(histogram_scan_big(::base::file_texture(texture_2d("./textures/HiLowNoise_D.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_average, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono, 0.379000008f, ::math::lerp(0.817000031f, 0.100000001f, evem_moss_distribution_amount)), 0.f, ::math::clamp(histogram_scan_big(::base::file_texture(texture_2d("./textures/aggregate_exposed_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_average, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono, 0.150000006f, ::math::lerp(0.200000003f, 0.680000007f, moss_height_growth)), 0.f, 1.f))), 0.f, ""), ::state::normal()), material_emission(emission: edf(), intensity: color(0.f, 0.f, 0.f), mode: intensity_radiant_exitance));
        material_surface tmp2 = material_surface(scattering: bsdf(), emission: material_emission(emission: edf(), intensity: color(0.f, 0.f, 0.f), mode: intensity_radiant_exitance));
        color tmp3 = color(1.f, 1.f, 1.f);
        material_volume tmp4 = material_volume(scattering: vdf(), absorption_coefficient: color(0.f, 0.f, 0.f), scattering_coefficient: color(0.f, 0.f, 0.f));
        material_geometry tmp5(float3(0.f), 1.f, add_detail_normal(::math::lerp(::state::normal(), ::base::tangent_space_normal_texture(texture_2d("./textures/moss_norm.jpg", ::tex::gamma_linear), moss_bump_factor, false, false, ::base::texture_coordinate_info(::state::texture_coordinate(0), ::state::texture_tangent_u(0), ::state::texture_tangent_v(0)), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false, 1.f, 0.f), moss_weight * ::math::lerp(histogram_scan_big(::base::file_texture(texture_2d("./textures/HiLowNoise_D.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_average, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono, 0.379000008f, ::math::lerp(0.817000031f, 0.100000001f, evem_moss_distribution_amount)), 0.f, ::math::clamp(histogram_scan_big(::base::file_texture(texture_2d("./textures/aggregate_exposed_height.jpg", ::tex::gamma_linear), color(0.f, 0.f, 0.f), color(1.f, 1.f, 1.f), ::base::mono_average, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), float2(0.f, 1.f), float2(0.f, 1.f), ::tex::wrap_repeat, ::tex::wrap_repeat, false).mono, 0.150000006f, ::math::lerp(0.200000003f, 0.680000007f, moss_height_growth)), 0.f, 1.f))), normalmap_normal(texture_2d("./textures/aggregate_exposed_norm.jpg", ::tex::gamma_linear), stones_bump_factor, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index))));
    } in
        material(
            thin_walled: tmp0,
            surface: tmp1,
            backface: tmp2,
            ior: tmp3,
            volume: tmp4,
            geometry: tmp5);


export material Ground_Aggregate_Exposed_Matte(*)
[[
    ::anno::display_name("Ground Aggregate Exposed - Matte"),
    ::anno::description(DESCRIPTION),
    ::anno::copyright_notice(COPYRIGHT),
    ::anno::author("NVIDIA vMaterials"),
	::anno::thumbnail("./.thumbs/Ground_Aggregate_Exposed.Ground_Aggregate_Exposed_Matte.png"),
	::anno::key_words(string[]("stone", "pebbles", "aggregate", "weathered", "rough", "construction", "architecture", "moss", "mossy", "nature", "layered", "outdoor", "ground", "multimaterial", "worn", "gray"))
]]
= Ground_Aggregate_Exposed(
	stone_brightness:				.6f,
	pebble_tip_roughness:			1.0f,
	stones_bump_factor:				1.00f,
	moss_height_growth:				0.0f,
	evem_moss_distribution_amount:	0.0f,
	moss_saturation:				0.8f,
	moss_brightness:				0.8f,
	moss_moisture:					0.0f,
	moss_weight:					0.0f,
	moss_bump_factor:				1.0f,
	texture_translate:				float2(0.0f),
	texture_rotate:					0.0f,
	texture_scale:					float2(1.0f),
	uv_space_index:					0
);


export material Ground_Aggregate_Slightly_Mossy(*)
[[
    ::anno::display_name("Ground Aggregate Exposed - Slighty Mossy"),
    ::anno::description(DESCRIPTION),
    ::anno::copyright_notice(COPYRIGHT),
    ::anno::author("NVIDIA vMaterials"),
	::anno::thumbnail("./.thumbs/Ground_Aggregate_Exposed.Ground_Aggregate_Slightly_Mossy.png"),
	::anno::key_words(string[]("stone", "pebbles", "aggregate", "weathered", "rough", "construction", "architecture", "moss", "mossy", "nature", "layered", "outdoor", "ground", "multimaterial", "worn", "gray", "green", "multicolor"))
]]
= Ground_Aggregate_Exposed(
	stone_brightness:				1.0f,
	pebble_tip_roughness:			0.5f,
	stones_bump_factor:				1.00f,
	moss_height_growth:				0.55f,
	evem_moss_distribution_amount:	1.0f,
	moss_saturation:				0.88f,
	moss_brightness:				0.8f,
	moss_moisture:					0.0f,
	moss_weight:					1.0f,
	moss_bump_factor:				1.0f,
	texture_translate:				float2(0.0f),
	texture_rotate:					0.0f,
	texture_scale:					float2(1.0f),
	uv_space_index:					0
);


export material Ground_Aggregate_Heavy_Moss(*) 
[[
    ::anno::display_name("Ground Aggregate Exposed - Heavy Moss"),
    ::anno::description(DESCRIPTION),
    ::anno::copyright_notice(COPYRIGHT),
    ::anno::author("NVIDIA vMaterials"),
	::anno::thumbnail("./.thumbs/Ground_Aggregate_Exposed.Ground_Aggregate_Heavy_Moss.png"),
	::anno::key_words(string[]("stone", "pebbles", "aggregate", "weathered", "rough", "construction", "architecture", "moss", "mossy", "nature", "layered", "outdoor", "ground", "multimaterial", "worn", "gray", "green", "multicolor"))
]]
= Ground_Aggregate_Exposed(
	stone_brightness:				1.0f,
	pebble_tip_roughness:			0.5f,
	stones_bump_factor:				1.00f,
	moss_height_growth:				0.875f,
	evem_moss_distribution_amount:	1.0f,
	moss_saturation:				0.0f,
	moss_brightness:				0.8f,
	moss_moisture:					0.0f,
	moss_weight:					1.0f,
	moss_bump_factor:				1.0f,
	texture_translate:				float2(0.0f),
	texture_rotate:					0.0f,
	texture_scale:					float2(1.0f),
	uv_space_index:					0
);


export material Ground_Aggregate_Saturated_Moss_Patches(*)
[[
    ::anno::display_name("Ground Aggregate Exposed - Moss Patches"),
    ::anno::description(DESCRIPTION),
    ::anno::copyright_notice(COPYRIGHT),
    ::anno::author("NVIDIA vMaterials"),
	::anno::thumbnail("./.thumbs/Ground_Aggregate_Exposed.Ground_Aggregate_Saturated_Moss_Patches.png"),
	::anno::key_words(string[]("stone", "pebbles", "aggregate", "weathered", "rough", "construction", "architecture", "moss", "mossy", "nature", "layered", "outdoor", "ground", "multimaterial", "worn", "gray", "green", "multicolor"))
]]
= Ground_Aggregate_Exposed(
	stone_brightness:				1.0f,
	pebble_tip_roughness:			0.0f,
	stones_bump_factor:				1.00f,
	moss_height_growth:				0.9f,
	evem_moss_distribution_amount:	0.524f,
	moss_saturation:				0.85f,
	moss_brightness:				0.8f,
	moss_moisture:					0.0f,
	moss_weight:					1.0f,
	moss_bump_factor:				1.0f,
	texture_translate:				float2(0.0f),
	texture_rotate:					0.0f,
	texture_scale:					float2(1.0f),
	uv_space_index:					0
);


export material Ground_Aggregate_Charred_Moss(*)
[[
    ::anno::display_name("Ground Aggregate Exposed - Charred Moss"),
    ::anno::description(DESCRIPTION),
    ::anno::copyright_notice(COPYRIGHT),
    ::anno::author("NVIDIA vMaterials"),
	::anno::thumbnail("./.thumbs/Ground_Aggregate_Exposed.Ground_Aggregate_Charred_Moss.png"),
	::anno::key_words(string[]("stone", "pebbles", "aggregate", "weathered", "rough", "construction", "architecture", "moss", "mossy", "dried", "nature", "layered", "outdoor", "ground", "multimaterial", "worn", "gray", "dark", "multicolor"))
]]
= Ground_Aggregate_Exposed(
	stone_brightness:				1.0f,
	pebble_tip_roughness:			0.8f,
	stones_bump_factor:				1.00f,
	moss_height_growth:				0.68f,
	evem_moss_distribution_amount:	0.96f,
	moss_saturation:				0.2f,
	moss_brightness:				0.2f,
	moss_moisture:					0.0f,
	moss_weight:					1.0f,
	moss_bump_factor:				1.0f,
	texture_translate:				float2(0.0f),
	texture_rotate:					0.0f,
	texture_scale:					float2(1.0f),
	uv_space_index:					0
);