materials/vMaterials_2/Ground/Ground_Hard_Court.mdl

/******************************************************************************
 *     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
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Modified Version without specific prior written permission, except a) to comply
 with the notice requirements otherwise contained herein; or b) to acknowledge
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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, 
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*/


mdl 1.5;

import ::anno::*;
import ::base::*;
import ::df::*;
import ::math::*;
import ::state::*;
import ::tex::*;
import ::nvidia::core_definitions::blend_colors;
import ::nvidia::core_definitions::dimension;


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 = "A hard court material for sports activities";

// Taken from https://www.shadertoy.com/view/4tlBWB
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);
}


float3 srgb2rgb(float3 val)
{
	return ::math::pow(::math::max(val, float3(0.0f)), 2.2);
}


float uint2float(int x)
{
    return float(x & 0x7FFFFFFF) + (x < 0 ? 2147483648.0 : 0.0);
}

int lowbias32(int x)
{
    x ^= x >>> 16;
    x *= 0x7feb352d;
    x ^= x >>> 15;
    x *= 0x846ca68b;
    x ^= x >>> 16;
    return x;
}

float2 rnd22(int2 p) {
	float2 ret_val = float2(
		uint2float(lowbias32(p[0] + lowbias32(p[1]))) / 4294967296.f,
		uint2float(lowbias32(p[0] + 32000 + lowbias32(p[1]))) / 4294967296.f
	);
    return ret_val;
}    

::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));
}

float2x2 invert_2x2(float2x2 M)
{
	float det = M[0][0]*M[1][1] - M[0][1]*M[1][0];
	//https://www.chilimath.com/lessons/advanced-algebra/inverse-of-a-2x2-matrix/
	return (1.0 / det) * float2x2(M[1][1], -M[0][1], -M[1][0], M[0][0]);
}

float3 nonrepeat_lookup(
	uniform texture_2d texture = texture_2d(),
	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
	float texture_scale = 1.0,
	float3 average_color = float3(0.5),
	float patch_size = 8.0
)
{
	
	float2 uv_in = float2(uvw.position[0], uvw.position[1]) * texture_scale;
	float Z =  patch_size;     // patch scale inside example texture
	float CON = 1.0f;
	
	float3 O = float3(0.f);
	float2x2 M0 = float2x2(1.f,0.f, 0.5f, ::math::sqrt(3.f)/2.f);
	float2x2 M = invert_2x2(M0); // transform matrix <-> tilted space
	
	float2 U = uv_in;
	float2 V = M * uv_in; //pre-tilted hexa coordinates
	int2 I = int2(::math::floor(V)); // hexa-tile id
	
	// The mean color needs to be determined in Photoshop then to make the
	// average color work out, take the float value and calculate the apropriate
	// mean value as (value^(1/2.2))

	float3 m = average_color;
	
	float3 F = float3(::math::frac(V)[0], ::math::frac(V)[1], 0.f), W;
	F[2] = 1.0 - F[0] - F[1]; // local hexa coordinates
	
	if( F[2] > 0.f )

		O = (W[0] = F[2]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I))) - m*float(CON))
		  + (W[1] = F[1]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(0,1)))) - m*float(CON))
		  + (W[2] = F[0]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1,0)))) - m*float(CON));
	else
		O = (W[0] =      -F[2]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1))))   - m*float(CON))
	      + (W[1] = 1.f - F[1]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(1, 0)))) - m*float(CON))
		  + (W[2] = 1.f - F[0]) * (( ::tex::lookup_float3(texture, U/Z-rnd22(I+int2(0, 1)))) - m*float(CON));
	O = m + O/::math::length(W);
	O = ::math::clamp( (O), 0.0, 1.0);
	
	return float3(O);
}

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);
}

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

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);
}

color endless_texture(
	uniform texture_2d texture = texture_2d(),
	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
	float texture_scale = 10.0,
	float3 average_color = float3(0.5, 0.5, 1.0),
	float patch_size = 8.0,
	bool gamma_correct_lookup = true
)
{
	return gamma_correct_lookup ? color(srgb2rgb(
			nonrepeat_lookup (
				texture: texture,
				uvw: uvw,
				texture_scale: texture_scale,
				average_color: average_color,
				patch_size: patch_size
			))
		) : color(nonrepeat_lookup (
			texture: texture,
			uvw: uvw,
			texture_scale: texture_scale,
			average_color: average_color,
			patch_size: patch_size
		));
}

float3 endless_normal(
	uniform texture_2d texture = texture_2d(),
	float factor = 1.0,
	bool flip_tangent_u = false,
	bool flip_tangent_v = false,
	::base::texture_coordinate_info uvw = ::base::coordinate_source(),
	float texture_scale = 1.0,
	float3 average_color = float3(0.5, 0.5, 1.0),
	float patch_size = 8.0
)
{
	float3 transformed_tangent_u = flip_tangent_u ? uvw.tangent_u : - uvw.tangent_u;
    float3 transformed_tangent_v = flip_tangent_v ? uvw.tangent_v : - uvw.tangent_v;
	
	if (flip_tangent_u)
		transformed_tangent_u=-transformed_tangent_u;
	if (flip_tangent_v)
		transformed_tangent_v=-transformed_tangent_v;

	// normalized Lookup
	float3 tangent_space_normal =
         (nonrepeat_lookup (
			texture: texture,
			uvw: uvw,
			texture_scale: texture_scale,
			average_color: average_color,
			patch_size: patch_size
		) - 0.5) * (2.0 * factor);
		
	 return ::math::normalize(uvw.tangent_u * tangent_space_normal.x +
          uvw.tangent_v * tangent_space_normal.y +
          ::state::normal()*1.0); 
}

export material Ground_Hard_Court(
    uniform bool infinite_tiling = true [[
        ::anno::description("Enables infinite tiling feature which removes repeating texture patterns. Note that depending on the material this feature changes the appearance of the material slightly."),
        ::anno::display_name("Infinite Tiling"),
        ::anno::in_group("Appearance")
    ]],
    float ground_hue = 0.02f [[
        ::anno::description("Selects the Hue for the Ground cort material. You can select any hue that you want, though we recommend to stick to colors that are actually used in real life."),
        ::anno::display_name("Ground  Hue"),
        ::anno::in_group("Appearance"),
        ::anno::hard_range(0.f, 1.f)
    ]],
    float ground_saturation = 0.85f [[
        ::anno::description("Adjust the saturation of the hard court material color. Default is 0.8, Beware that setting the saturation to the maximum value will result in unrealistic looking saturation."),
        ::anno::display_name("Ground  Saturation"),
        ::anno::in_group("Appearance"),
        ::anno::hard_range(0.f, 1.f)
    ]],
    float ground_brightness = 0.6f [[
        ::anno::description("Adjusts the overall brightness of the hard court material. Default is 0.6."),
        ::anno::display_name("Ground Brightness"),
        ::anno::in_group("Appearance"),
        ::anno::hard_range(0.f, 1.f)
    ]],
    float roughness = 1.f [[
        ::anno::description("Higher roughness values lead to bigger highlights and blurrier reflections."),
        ::anno::display_name("Roughness"),
        ::anno::in_group("Appearance"),
        ::anno::hard_range(0.f, 1.f)
    ]],
    float roughness_variation = 0.f [[
        ::anno::description("Breaks up the roughness pattern and makes it less uniform."),
        ::anno::display_name("Roughness Variation"),
        ::anno::in_group("Appearance"),
        ::anno::hard_range(0.f, 1.f)
    ]],
    float reflectivity = 1.f [[
        ::anno::description("The overall reflectivity of the surface."),
        ::anno::display_name("Reflectivity"),
        ::anno::in_group("Appearance"),
        ::anno::hard_range(0.f, 1.f)
    ]],
    float bump_strength = 1.f [[
        ::anno::description("Specifies the strength of the bump."),
        ::anno::display_name("Bump Strength"),
        ::anno::in_group("Appearance"),
        ::anno::soft_range(0.f, 1.f),
        ::anno::hard_range(0.f, 3.f)
    ]],
    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"),
		::anno::soft_range(0.f, 360.f)
    ]],
    uniform float2 texture_scale = float2(1.f) [[
        ::anno::description("Larger numbers increase the size."),
        ::anno::display_name("Scale"),
		::nvidia::core_definitions::dimension(float2(1.0, 1.0)),
        ::anno::in_group("Transform")
    ]],
    uniform bool enable_round_corners = false [[
        ::anno::description("Enabling creates the impression of rounded corners across hard edges. Comes at a slight performance cost as additional raytracing calls are required to evaluate the effect."),
        ::anno::display_name("Enable Round Corners"),
        ::anno::in_group("Round Corners")
    ]],
    uniform float roundcorners_radius = 1.5f [[
        ::anno::description("Radius of the rounded corners in millimeters."),
        ::anno::display_name("Round Corner Radius (mm)"),
        ::anno::in_group("Round Corners"),
        ::anno::soft_range(0.f, 1.f)
    ]],
    uniform bool roundcorners_across_materials = false [[
        ::anno::description("When enabled, the effect is across different materials, otherwise just the same material."),
        ::anno::display_name("Across Materials"),
        ::anno::in_group("Round Corners")
    ]],
    uniform int uv_space_index = 0 [[
        ::anno::description("Use selected UV space for material."),
        ::anno::display_name("UV Space Index"),
        ::anno::in_group("Advanced")
    ]]
)
[[
	::anno::author("NVIDIA vMaterials"),
	::anno::display_name("Ground Hard Court - Red"),
	::anno::description(DESCRIPTION),
	::anno::copyright_notice(COPYRIGHT),
	::anno::thumbnail("./.thumbs/Ground_Hard_Court.Ground_Hard_Court.png"),
	::anno::key_words(string[]("ground", "hard court", "court", "hard", "exterior", "sports", "bumped", "rough", "artificial", "red", "saturated", "warm"))
]]
 = 
    let {
        bool tmp0 = false;
        material_surface tmp1(
            ::df::weighted_layer(1.f, ::df::custom_curve_layer(0.0350400023f, 1.f, 5.f, histogram_scan_big(float3(infinite_tiling ? endless_texture(texture_2d("./textures/hard_court_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 1.99800014f, float3(0.866999984f, 0.764999986f, 0.497999996f), 1.99800014f, true) : ::base::file_texture(texture_2d("./textures/hard_court_multi_R_rough_G_ao_B_height.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).tint)[1], 0.722000062f, ::math::lerp(0.674000025f, 0.238000005f, reflectivity)), ::df::microfacet_ggx_smith_bsdf((histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/hard_court_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 1.99800014f, float3(0.866999984f, 0.764999986f, 0.497999996f), 1.99800014f, true) : ::base::file_texture(texture_2d("./textures/hard_court_multi_R_rough_G_ao_B_height.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).tint)[0], 1.f, ::math::lerp(0.349999994f, 0.600000024f, roughness)) + roughness_variation * 0.197000012f * (float3(infinite_tiling ? endless_texture(texture_2d("./textures/hard_court_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 1.99800014f, float3(0.866999984f, 0.764999986f, 0.497999996f), 1.99800014f, true) : ::base::file_texture(texture_2d("./textures/hard_court_multi_R_rough_G_ao_B_height.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).tint)[2] - 0.108000003f)) * (histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/hard_court_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 1.99800014f, float3(0.866999984f, 0.764999986f, 0.497999996f), 1.99800014f, true) : ::base::file_texture(texture_2d("./textures/hard_court_multi_R_rough_G_ao_B_height.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).tint)[0], 1.f, ::math::lerp(0.349999994f, 0.600000024f, roughness)) + roughness_variation * 0.197000012f * (float3(infinite_tiling ? endless_texture(texture_2d("./textures/hard_court_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 1.99800014f, float3(0.866999984f, 0.764999986f, 0.497999996f), 1.99800014f, true) : ::base::file_texture(texture_2d("./textures/hard_court_multi_R_rough_G_ao_B_height.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).tint)[2] - 0.108000003f)), (histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/hard_court_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 1.99800014f, float3(0.866999984f, 0.764999986f, 0.497999996f), 1.99800014f, true) : ::base::file_texture(texture_2d("./textures/hard_court_multi_R_rough_G_ao_B_height.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).tint)[0], 1.f, ::math::lerp(0.349999994f, 0.600000024f, roughness)) + roughness_variation * 0.197000012f * (float3(infinite_tiling ? endless_texture(texture_2d("./textures/hard_court_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 1.99800014f, float3(0.866999984f, 0.764999986f, 0.497999996f), 1.99800014f, true) : ::base::file_texture(texture_2d("./textures/hard_court_multi_R_rough_G_ao_B_height.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).tint)[2] - 0.108000003f)) * (histogram_range(float3(infinite_tiling ? endless_texture(texture_2d("./textures/hard_court_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 1.99800014f, float3(0.866999984f, 0.764999986f, 0.497999996f), 1.99800014f, true) : ::base::file_texture(texture_2d("./textures/hard_court_multi_R_rough_G_ao_B_height.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).tint)[0], 1.f, ::math::lerp(0.349999994f, 0.600000024f, roughness)) + roughness_variation * 0.197000012f * (float3(infinite_tiling ? endless_texture(texture_2d("./textures/hard_court_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 1.99800014f, float3(0.866999984f, 0.764999986f, 0.497999996f), 1.99800014f, true) : ::base::file_texture(texture_2d("./textures/hard_court_multi_R_rough_G_ao_B_height.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).tint)[2] - 0.108000003f)), color(1.f, 1.f, 1.f), ::state::texture_tangent_u(0), ::df::scatter_reflect), ::df::diffuse_reflection_bsdf(::nvidia::core_definitions::blend_colors(::nvidia::core_definitions::blend_colors(color(::math::pow(hsv2rgb(::math::lerp(float3(0.f, 0.f, 0.5f), float3(1.f, 0.800000012f, 0.899999976f), float3(ground_hue, ground_saturation, ground_brightness))), 2.20000005f)), infinite_tiling ? endless_texture(texture_2d("./textures/hard_court_mono_diff.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 1.99800014f, float3(0.63499999f), 1.99800014f, true) : color(::math::pow(::base::file_texture(texture_2d("./textures/hard_court_mono_diff.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, 2.20000005f)), ::base::color_layer_multiply, 1.f).tint, color(::math::pow(float3(infinite_tiling ? endless_texture(texture_2d("./textures/hard_court_multi_R_rough_G_ao_B_height.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 1.99800014f, float3(0.866999984f, 0.764999986f, 0.497999996f), 1.99800014f, true) : ::base::file_texture(texture_2d("./textures/hard_court_multi_R_rough_G_ao_B_height.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).tint)[1], 2.20000005f)), ::base::color_layer_multiply, 0.f).tint, 0.f), infinite_tiling ? endless_normal(texture_2d("./textures/hard_court_norm.jpg", ::tex::gamma_linear), bump_strength, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 1.99800014f, float3(0.497999996f, 0.50999999f, 0.92900002f), 1.99800014f) : normalmap_normal(texture_2d("./textures/hard_court_norm.jpg", ::tex::gamma_linear), bump_strength, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index))), bsdf(), infinite_tiling ? endless_normal(texture_2d("./textures/hard_court_norm.jpg", ::tex::gamma_linear), bump_strength, false, false, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 1.99800014f, float3(0.497999996f, 0.50999999f, 0.92900002f), 1.99800014f) : normalmap_normal(texture_2d("./textures/hard_court_norm.jpg", ::tex::gamma_linear), bump_strength, vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index))),
            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,
            enable_round_corners ? ::state::rounded_corner_normal(roundcorners_radius / 1000.f, roundcorners_across_materials, 1.f) : ::state::normal());
        hair_bsdf tmp6 = hair_bsdf();
    } in
        material(
            thin_walled: tmp0,
            surface: tmp1,
            backface: tmp2,
            ior: tmp3,
            volume: tmp4,
            geometry: tmp5,
            hair: tmp6);
			
// 2
export material Ground_Hard_Court_Red_Desaturated(*)
[[
	::anno::author("NVIDIA vMaterials"),
	::anno::display_name("Ground Hard Court - Red Desaturated"),
	::anno::description(DESCRIPTION),
	::anno::copyright_notice(COPYRIGHT),
	::anno::thumbnail("./.thumbs/Ground_Hard_Court.Ground_Hard_Court_Red_Desaturated.png"),
	::anno::key_words(string[]("ground", "hard court", "court", "hard", "exterior", "sports", "bumped", "rough", "artificial", "red", "warm"))
]] = Ground_Hard_Court
(
	infinite_tiling:	true,
	ground_hue:			0.02f,
	ground_saturation:	0.65f,
	ground_brightness:	0.6f,
	roughness:			1.0f,
	roughness_variation:1.0f,
	reflectivity:		1.0f,
	bump_strength:		1.0f,
	texture_translate:	float2(0.0f),
	texture_rotate:		0.0f,
	texture_scale:		float2(1.0f),
	enable_round_corners: 			false,
	roundcorners_radius:			1.5f,
	roundcorners_across_materials:	false,
	uv_space_index:		0	
);

//3
export material Ground_Hard_Court_Blue(*)
[[
	::anno::author("NVIDIA vMaterials"),
	::anno::display_name("Ground Hard Court - Blue"),
	::anno::description(DESCRIPTION),
	::anno::copyright_notice(COPYRIGHT),
	::anno::thumbnail("./.thumbs/Ground_Hard_Court.Ground_Hard_Court_Blue.png"),
	::anno::key_words(string[]("ground", "hard court", "court", "hard", "exterior", "sports", "bumped", "rough", "artificial", "blue", "cool", "saturated"))
]] = Ground_Hard_Court
(
	infinite_tiling:	true,
	ground_hue:			0.589f,
	ground_saturation:	0.9f,
	ground_brightness:	0.5f,
	roughness:			0.41f,
	roughness_variation:1.0f,
	reflectivity:		0.5f,
	bump_strength:		1.0f,
	texture_translate:	float2(0.0f),
	texture_rotate:		0.0f,
	texture_scale:		float2(1.0f),
	enable_round_corners: 			false,
	roundcorners_radius:			1.5f,
	roundcorners_across_materials:	false,
	uv_space_index:		0	
);


//4
export material Ground_Hard_Court_Faded_Blue(*)
[[
	::anno::author("NVIDIA vMaterials"),
	::anno::display_name("Ground Hard Court - Faded Blue"),
	::anno::description(DESCRIPTION),
	::anno::copyright_notice(COPYRIGHT),
	::anno::thumbnail("./.thumbs/Ground_Hard_Court.Ground_Hard_Court_Faded_Blue.png"),
	::anno::key_words(string[]("ground", "hard court", "court", "hard", "exterior", "sports", "bumped", "rough", "artificial", "blue", "cool", "desaturated"))
]] = Ground_Hard_Court
(
	infinite_tiling:	true,
	ground_hue:			0.58f,
	ground_saturation:	0.65f,
	ground_brightness:	0.65f,
	roughness:			1.0f,
	roughness_variation:1.0f,
	reflectivity:		1.0f,
	bump_strength:		1.0f,
	texture_translate:	float2(0.0f),
	texture_rotate:		0.0f,
	texture_scale:		float2(1.0f),
	enable_round_corners: 			false,
	roundcorners_radius:			1.5f,
	roundcorners_across_materials:	false,
	uv_space_index:		0	
);



//5
export material Ground_Hard_Court_Light_Green(*)
[[
	::anno::author("NVIDIA vMaterials"),
	::anno::display_name("Ground Hard Court - Light Green"),
	::anno::description(DESCRIPTION),
	::anno::copyright_notice(COPYRIGHT),
	::anno::thumbnail("./.thumbs/Ground_Hard_Court.Ground_Hard_Court_Light_Green.png"),
	::anno::key_words(string[]("ground", "hard court", "court", "hard", "exterior", "sports", "bumped", "rough", "artificial", "green", "light"))
]] = Ground_Hard_Court
(
	infinite_tiling:	true,
	ground_hue:			0.3f,
	ground_saturation:	0.68f,
	ground_brightness:	0.623f,
	roughness:			0.41f,
	roughness_variation:0.0f,
	reflectivity:		0.5f,
	bump_strength:		1.0f,
	texture_translate:	float2(0.0f),
	texture_rotate:		0.0f,
	texture_scale:		float2(1.0f),
	enable_round_corners: 			false,
	roundcorners_radius:			1.5f,
	roundcorners_across_materials:	false,
	uv_space_index:		0	
);


// 6
export material Ground_Hard_Court_Dark_Green(*)
[[
	::anno::author("NVIDIA vMaterials"),
	::anno::display_name("Ground Hard Court - Dark Green"),
	::anno::description(DESCRIPTION),
	::anno::copyright_notice(COPYRIGHT),
	::anno::thumbnail("./.thumbs/Ground_Hard_Court.Ground_Hard_Court_Dark_Green.png"),
	::anno::key_words(string[]("ground", "hard court", "court", "hard", "exterior", "sports", "bumped", "rough", "artificial", "green", "dark"))
]] = Ground_Hard_Court
(
	infinite_tiling:	true,
	ground_hue:			0.3f,
	ground_saturation:	0.8f,
	ground_brightness:	0.0f,
	roughness:			0.41f,
	roughness_variation:0.0f,
	reflectivity:		0.5f,
	bump_strength:		1.0f,
	texture_translate:	float2(0.0f),
	texture_rotate:		0.0f,
	texture_scale:		float2(1.0f),
	enable_round_corners: 			false,
	roundcorners_radius:			1.5f,
	roundcorners_across_materials:	false,
	uv_space_index:		0	
);



// 7
export material Ground_Hard_Court_Olive_Green(*)
[[
	::anno::author("NVIDIA vMaterials"),
	::anno::display_name("Ground Hard Court - Olive Green"),
	::anno::description(DESCRIPTION),
	::anno::copyright_notice(COPYRIGHT),
	::anno::thumbnail("./.thumbs/Ground_Hard_Court.Ground_Hard_Court_Olive_Green.png"),
	::anno::key_words(string[]("ground", "hard court", "court", "hard", "exterior", "sports", "bumped", "rough", "artificial", "green", "olive"))
]] = Ground_Hard_Court
(
	infinite_tiling:	true,
	ground_hue:			0.22f,
	ground_saturation:	0.495f,
	ground_brightness:	0.25f,
	roughness:			0.5f,
	roughness_variation:0.0f,
	reflectivity:		0.5f,
	bump_strength:		1.0f,
	texture_translate:	float2(0.0f),
	texture_rotate:		0.0f,
	texture_scale:		float2(1.0f),
	enable_round_corners: 			false,
	roundcorners_radius:			1.5f,
	roundcorners_across_materials:	false,
	uv_space_index:		0	
);