| /****************************************************************************** |
| * 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 1.4; |
| |
| 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"; |
| |
| |
| ::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)); |
| } |
| |
|
|
| 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; |
| } |
| |
| float3 srgb2rgb(float3 val) |
| { |
| return ::math::pow(::math::max(val, float3(0.0f)), 2.2); |
| } |
| |
| 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); |
| } |
| |
| 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 |
| )); |
| } |
| |
|
|
| export material Copper( |
| 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 roughness = 0.1f [[ |
| ::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 smudges = 0.5f [[ |
| ::anno::description("Adds blurrier reflection that follow the intensities of the Roughness texture on top."), |
| ::anno::display_name("Smudges"), |
| ::anno::in_group("Appearance"), |
| ::anno::hard_range(0.f, 1.f) |
| ]], |
| uniform bool enable_round_corners = false [[ |
| ::anno::description("Enables the round corner effect. Comes at a slight performance cost as additional raytracing calls are required to evaluate the round corner effect."), |
| ::anno::display_name("Enable Round Corners"), |
| ::anno::in_group("Round Corners") |
| ]], |
| uniform float radius = 0.03f [[ |
| ::anno::description("Radius of the rounded corners."), |
| ::anno::display_name("Round Corner Radius"), |
| ::anno::in_group("Round Corners") |
| ]], |
| uniform bool across_materials = false [[ |
| ::anno::display_name("Across Materials"), |
| ::anno::description("When enabled the round corner effect is applied across different materials."), |
| ::anno::in_group("Round Corners") |
| ]], |
| uniform float2 texture_translate = float2(0.f) [[ |
| ::anno::display_name("Texture Translate"), |
| ::anno::description("Controls the position of the texture."), |
| ::anno::in_group("Transform") |
| ]], |
| uniform float texture_rotate = 0.f [[ |
| ::anno::display_name("Texture Rotate"), |
| ::anno::description("Rotates angle of the texture in degrees."), |
| ::anno::soft_range(0.f, 360.f), |
| ::anno::in_group("Transform") |
| ]], |
| uniform float2 texture_scale = float2(1.f) [[ |
| ::anno::display_name("Texture Scale"), |
| ::anno::description("Larger numbers increase the size."), |
| ::anno::in_group("Transform"), |
| ::nvidia::core_definitions::dimension(float2(.45f, .45f)) |
| ]], |
| uniform int uv_space_index = 0 [[ |
| ::anno::display_name("UV Space Index"), |
| ::anno::in_group("Advanced") |
| ]], |
| float3 normal = ::state::normal() [[ |
| ::anno::description("Modify the surface normal."), |
| ::anno::display_name("Normal"), |
| ::anno::in_group("Advanced") |
| ]] |
| ) |
| [[ |
| ::anno::author("NVIDIA vMaterials"), |
| ::anno::display_name("Copper"), |
| ::anno::description("Pure metal material with optional smudges."), |
| ::anno::copyright_notice(COPYRIGHT), |
| ::anno::thumbnail("./.thumbs/Copper.Copper.png"), |
| ::anno::key_words(string[]("metal", "pure", "smudged", "design", "reflective", "infinite tiling", "smooth", "conductor", "new", "polished", "copper", "warm")) |
| ]] |
| = |
| let { |
| |
| // color normal_reflectivity = color(0.9654565f, 0.6899602f, 0.4830392f); |
| color normal_reflectivity = color(0.93120f, 0.62276f, 0.52235f); // Johnson Christy |
| color grazing_reflectivity = color(0.99942f, 1.f, 1.f); |
| |
| bool tmp0 = false; |
| material_surface tmp1( |
| ::df::color_custom_curve_layer(normal_reflectivity, grazing_reflectivity, 5.f, color(1.f, 1.f, 1.f), ::df::microfacet_ggx_smith_bsdf(::math::lerp(::math::lerp(0.f, 0.5f, roughness), ::math::lerp(0.f, 0.5f, roughness) + smudges * (1.f - ::math::lerp(0.f, 0.5f, roughness)), infinite_tiling ? float3(endless_texture(texture_2d("./textures/metal_smudges_rough.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 8.f, float3(0.0820000023f), 8.f, false))[0] : ::base::file_texture(texture_2d("./textures/metal_smudges_rough.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) * ::math::lerp(::math::lerp(0.f, 0.5f, roughness), ::math::lerp(0.f, 0.5f, roughness) + smudges * (1.f - ::math::lerp(0.f, 0.5f, roughness)), infinite_tiling ? float3(endless_texture(texture_2d("./textures/metal_smudges_rough.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 8.f, float3(0.0820000023f), 8.f, false))[0] : ::base::file_texture(texture_2d("./textures/metal_smudges_rough.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), ::math::lerp(::math::lerp(0.f, 0.5f, roughness), ::math::lerp(0.f, 0.5f, roughness) + smudges * (1.f - ::math::lerp(0.f, 0.5f, roughness)), infinite_tiling ? float3(endless_texture(texture_2d("./textures/metal_smudges_rough.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 8.f, float3(0.0820000023f), 8.f, false))[0] : ::base::file_texture(texture_2d("./textures/metal_smudges_rough.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) * ::math::lerp(::math::lerp(0.f, 0.5f, roughness), ::math::lerp(0.f, 0.5f, roughness) + smudges * (1.f - ::math::lerp(0.f, 0.5f, roughness)), infinite_tiling ? float3(endless_texture(texture_2d("./textures/metal_smudges_rough.jpg", ::tex::gamma_linear), vmat_transform(texture_translate, texture_rotate, texture_scale, ::base::texture_coordinate_uvw, uv_space_index), 8.f, float3(0.0820000023f), 8.f, false))[0] : ::base::file_texture(texture_2d("./textures/metal_smudges_rough.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), color(1.f, 1.f, 1.f), ::state::texture_tangent_u(0), ::df::scatter_reflect, ""), bsdf(), 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, |
| enable_round_corners ? ::state::rounded_corner_normal(radius, across_materials, 1.f) : ::state::normal()); |
| } in |
| material( |
| thin_walled: tmp0, |
| surface: tmp1, |
| backface: tmp2, |
| ior: tmp3, |
| volume: tmp4, |
| geometry: tmp5); |
| |
| |
| export material Copper_Polished(*) |
| [[ |
| ::anno::author("NVIDIA vMaterials"), |
| ::anno::display_name("Copper Polished"), |
| ::anno::description("Pure metal material with optional smudges."), |
| ::anno::copyright_notice(COPYRIGHT), |
| ::anno::thumbnail("./.thumbs/Copper.Copper_Polished.png"), |
| ::anno::key_words(string[]("metal", "pure", "design", "reflective", "infinite tiling", "smooth", "conductor", "new", "polished", "copper", "warm")) |
| ]] |
| = Copper( |
| infinite_tiling: true, |
| roughness: 0.0f, |
| smudges: 0.0f, |
| enable_round_corners: false, |
| radius: 0.03f, |
| across_materials: false, |
| texture_translate: float2(0.0f, 0.0f), |
| texture_rotate: 0.0f, |
| texture_scale: float2(1.0f, 1.0f), |
| uv_space_index: 0, |
| normal: ::state::normal() |
| ); |
| |
|
|
| export material Copper_Glossy_Fingerprints(*) |
| [[ |
| ::anno::author("NVIDIA vMaterials"), |
| ::anno::display_name("Copper Glossy Fingerprints"), |
| ::anno::description("Pure metal material with optional smudges."), |
| ::anno::copyright_notice(COPYRIGHT), |
| ::anno::thumbnail("./.thumbs/Copper.Copper_Glossy_Fingerprints.png"), |
| ::anno::key_words(string[]("metal", "pure", "design", "smudged", "reflective", "infinite tiling", "smooth", "conductor", "new", "polished", "copper", "warm")) |
| ]] |
| = Copper( |
| infinite_tiling: true, |
| roughness: 0.23f, |
| smudges: 1.0f, |
| enable_round_corners: false, |
| radius: 0.03f, |
| across_materials: false, |
| texture_translate: float2(0.0f, 0.0f), |
| texture_rotate: 0.0f, |
| texture_scale: float2(1.0f, 1.0f), |
| uv_space_index: 0, |
| normal: ::state::normal() |
| ); |
| |
| |
| /* |
| - Aluminum |
| 0.911810895428,0.914089043421,0.920152876196 |
| |
| - Copper |
| 0.9654565, 0.6899602, 0.4830392 |
| |
| - Chromium |
| 0.549302, 0.5560554, 0.5542377 |
| |
| - Iron |
| 0.5293683, 0.5132565, 0.4942483 |
| |
| - Gold |
| 1.0,0.722306985258,0.340058756743 |
| |
| - Nickel |
| 0.696691094703,0.640529134605,0.563260231405 |
| |
| - Platinum |
| 0.678533319955,0.639590890417,0.583638675413 |
| |
| - Mercury |
| 0.780978740699,0.779541528985,0.778441417779 |
| |
| - Silver |
| 0.9614253056,0.948983344333,0.918968346466 |
| |
| - Titanium |
| 0.618264052974,0.579396264956,0.542545225681 |
| |
| - Tungsten |
| 0.951001417565,0.815051845356,0.751931718925 |
| |
| - Zinc |
| 0.87467950988,0.868943040106,0.855089634324 |
| |
|
|
| */ |
| |
