diff options
Diffstat (limited to 'source')
-rw-r--r-- | source/blender/blenkernel/BKE_node.h | 1 | ||||
-rw-r--r-- | source/blender/blenkernel/intern/node.c | 1 | ||||
-rw-r--r-- | source/blender/editors/space_node/drawnode.c | 1 | ||||
-rw-r--r-- | source/blender/gpu/shaders/gpu_shader_material.glsl | 190 | ||||
-rw-r--r-- | source/blender/makesrna/intern/rna_nodetree.c | 26 | ||||
-rw-r--r-- | source/blender/nodes/CMakeLists.txt | 1 | ||||
-rw-r--r-- | source/blender/nodes/NOD_shader.h | 1 | ||||
-rw-r--r-- | source/blender/nodes/NOD_static_types.h | 1 | ||||
-rw-r--r-- | source/blender/nodes/shader/nodes/node_shader_bsdf_principled.c | 114 |
9 files changed, 334 insertions, 2 deletions
diff --git a/source/blender/blenkernel/BKE_node.h b/source/blender/blenkernel/BKE_node.h index 193f1154c54..7544e8f5b3e 100644 --- a/source/blender/blenkernel/BKE_node.h +++ b/source/blender/blenkernel/BKE_node.h @@ -785,6 +785,7 @@ struct ShadeResult; #define SH_NODE_OUTPUT_LINESTYLE 190 #define SH_NODE_UVALONGSTROKE 191 #define SH_NODE_TEX_POINTDENSITY 192 +#define SH_NODE_BSDF_PRINCIPLED 193 /* custom defines options for Material node */ #define SH_NODE_MAT_DIFF 1 diff --git a/source/blender/blenkernel/intern/node.c b/source/blender/blenkernel/intern/node.c index f3223e31b17..63da1b5f9e7 100644 --- a/source/blender/blenkernel/intern/node.c +++ b/source/blender/blenkernel/intern/node.c @@ -3568,6 +3568,7 @@ static void registerShaderNodes(void) register_node_type_sh_background(); register_node_type_sh_bsdf_anisotropic(); register_node_type_sh_bsdf_diffuse(); + register_node_type_sh_bsdf_principled(); register_node_type_sh_bsdf_glossy(); register_node_type_sh_bsdf_glass(); register_node_type_sh_bsdf_translucent(); diff --git a/source/blender/editors/space_node/drawnode.c b/source/blender/editors/space_node/drawnode.c index e4f5802a395..8dba0e39524 100644 --- a/source/blender/editors/space_node/drawnode.c +++ b/source/blender/editors/space_node/drawnode.c @@ -1234,6 +1234,7 @@ static void node_shader_set_butfunc(bNodeType *ntype) case SH_NODE_BSDF_GLOSSY: case SH_NODE_BSDF_GLASS: case SH_NODE_BSDF_REFRACTION: + case SH_NODE_BSDF_PRINCIPLED: ntype->draw_buttons = node_shader_buts_glossy; break; case SH_NODE_BSDF_ANISOTROPIC: diff --git a/source/blender/gpu/shaders/gpu_shader_material.glsl b/source/blender/gpu/shaders/gpu_shader_material.glsl index c354b274f00..b88fba12f55 100644 --- a/source/blender/gpu/shaders/gpu_shader_material.glsl +++ b/source/blender/gpu/shaders/gpu_shader_material.glsl @@ -2378,11 +2378,19 @@ void shade_alpha_obcolor(vec4 col, vec4 obcol, out vec4 outcol) /*********** NEW SHADER UTILITIES **************/ -float fresnel_dielectric(vec3 Incoming, vec3 Normal, float eta) +float fresnel_dielectric_0(float eta) +{ + /* compute fresnel reflactance at normal incidence => cosi = 1.0 */ + float A = (eta - 1.0) / (eta + 1.0); + + return A * A; +} + +float fresnel_dielectric_cos(float cosi, float eta) { /* compute fresnel reflectance without explicitly computing * the refracted direction */ - float c = abs(dot(Incoming, Normal)); + float c = abs(cosi); float g = eta * eta - 1.0 + c * c; float result; @@ -2399,6 +2407,13 @@ float fresnel_dielectric(vec3 Incoming, vec3 Normal, float eta) return result; } +float fresnel_dielectric(vec3 Incoming, vec3 Normal, float eta) +{ + /* compute fresnel reflectance without explicitly computing + * the refracted direction */ + return fresnel_dielectric_cos(dot(Incoming, Normal), eta); +} + float hypot(float x, float y) { return sqrt(x * x + y * y); @@ -2492,6 +2507,57 @@ float floorfrac(float x, out int i) return x - i; } + +/* Principled BSDF operations */ + +float sqr(float a) +{ + return a*a; +} + +float schlick_fresnel(float u) +{ + float m = clamp(1.0 - u, 0.0, 1.0); + float m2 = m * m; + return m2 * m2 * m; // pow(m,5) +} + +float GTR1(float NdotH, float a) +{ + if (a >= 1.0) return M_1_PI; + float a2 = a*a; + float t = 1.0 + (a2 - 1.0) * NdotH*NdotH; + return (a2 - 1.0) / (M_PI * log(a2) * t); +} + +float GTR2(float NdotH, float a) +{ + float a2 = a*a; + float t = 1.0 + (a2 - 1.0) * NdotH*NdotH; + return a2 / (M_PI * t*t); +} + +float GTR2_aniso(float NdotH, float HdotX, float HdotY, float ax, float ay) +{ + return 1.0 / (M_PI * ax*ay * sqr(sqr(HdotX / ax) + sqr(HdotY / ay) + NdotH*NdotH)); +} + +float smithG_GGX(float NdotV, float alphaG) +{ + float a = alphaG*alphaG; + float b = NdotV*NdotV; + return 1.0 / (NdotV + sqrt(a + b - a * b)); +} + +vec3 rotate_vector(vec3 p, vec3 n, float theta) { + return ( + p * cos(theta) + cross(n, p) * + sin(theta) + n * dot(p, n) * + (1.0 - cos(theta)) + ); +} + + /*********** NEW SHADER NODES ***************/ #define NUM_LIGHTS 3 @@ -2553,6 +2619,126 @@ void node_bsdf_toon(vec4 color, float size, float tsmooth, vec3 N, out vec4 resu node_bsdf_diffuse(color, 0.0, N, result); } +void node_bsdf_principled(vec4 base_color, float subsurface, vec3 subsurface_radius, vec4 subsurface_color, float metallic, float specular, + float specular_tint, float roughness, float anisotropic, float anisotropic_rotation, float sheen, float sheen_tint, float clearcoat, + float clearcoat_gloss, float ior, float transparency, float refraction_roughness, vec3 N, vec3 CN, vec3 T, vec3 I, out vec4 result) +{ + /* ambient light */ + // TODO: set ambient light to an appropriate value + vec3 L = vec3(mix(0.1, 0.03, metallic)) * base_color.rgb; + + float eta = (2.0 / (1.0 - sqrt(0.08 * specular))) - 1.0; + + /* set the viewing vector */ + vec3 V = -normalize(I); + + /* get the tangent */ + vec3 Tangent = T; + if (T == vec3(0.0)) { + // if no tangent is set, use a default tangent + Tangent = vec3(1.0, 0.0, 0.0); + if (N.x != 0.0 || N.y != 0.0) { + vec3 N_xz = normalize(vec3(N.x, 0.0, N.z)); + + vec3 axis = normalize(cross(vec3(0.0, 0.0, 1.0), N_xz)); + float angle = acos(dot(vec3(0.0, 0.0, 1.0), N_xz)); + + Tangent = normalize(rotate_vector(vec3(1.0, 0.0, 0.0), axis, angle)); + } + } + + /* rotate tangent */ + if (anisotropic_rotation != 0.0) { + Tangent = rotate_vector(Tangent, N, anisotropic_rotation * 2.0 * M_PI); + } + + /* calculate the tangent and bitangent */ + vec3 Y = normalize(cross(N, Tangent)); + vec3 X = cross(Y, N); + + /* fresnel normalization parameters */ + float F0 = fresnel_dielectric_0(eta); + float F0_norm = 1.0 / (1.0 - F0); + + /* directional lights */ + for (int i = 0; i < NUM_LIGHTS; i++) { + vec3 light_position_world = gl_LightSource[i].position.xyz; + vec3 light_position = normalize(gl_NormalMatrix * light_position_world); + + vec3 H = normalize(light_position + V); + + vec3 light_specular = gl_LightSource[i].specular.rgb; + + float NdotL = dot(N, light_position); + float NdotV = dot(N, V); + float LdotH = dot(light_position, H); + + vec3 diffuse_and_specular_bsdf = vec3(0.0); + if (NdotL >= 0.0 && NdotV >= 0.0) { + float NdotH = dot(N, H); + + float Cdlum = 0.3 * base_color.r + 0.6 * base_color.g + 0.1 * base_color.b; // luminance approx. + + vec3 Ctint = Cdlum > 0 ? base_color.rgb / Cdlum : vec3(1.0); // normalize lum. to isolate hue+sat + vec3 Cspec0 = mix(specular * 0.08 * mix(vec3(1.0), Ctint, specular_tint), base_color.rgb, metallic); + vec3 Csheen = mix(vec3(1.0), Ctint, sheen_tint); + + // Diffuse fresnel - go from 1 at normal incidence to .5 at grazing + // and mix in diffuse retro-reflection based on roughness + + float FL = schlick_fresnel(NdotL), FV = schlick_fresnel(NdotV); + float Fd90 = 0.5 + 2.0 * LdotH*LdotH * roughness; + float Fd = mix(1.0, Fd90, FL) * mix(1.0, Fd90, FV); + + // Based on Hanrahan-Krueger brdf approximation of isotropic bssrdf + // 1.25 scale is used to (roughly) preserve albedo + // Fss90 used to "flatten" retroreflection based on roughness + float Fss90 = LdotH*LdotH * roughness; + float Fss = mix(1.0, Fss90, FL) * mix(1.0, Fss90, FV); + float ss = 1.25 * (Fss * (1.0 / (NdotL + NdotV) - 0.5) + 0.5); + + // specular + float aspect = sqrt(1.0 - anisotropic * 0.9); + float a = sqr(roughness); + float ax = max(0.001, a / aspect); + float ay = max(0.001, a * aspect); + float Ds = GTR2_aniso(NdotH, dot(H, X), dot(H, Y), ax, ay); //GTR2(NdotH, a); + float FH = (fresnel_dielectric_cos(LdotH, eta) - F0) * F0_norm; + vec3 Fs = mix(Cspec0, vec3(1.0), FH); + float roughg = sqr(roughness * 0.5 + 0.5); + float Gs = smithG_GGX(NdotL, roughg) * smithG_GGX(NdotV, roughg); + + // sheen + vec3 Fsheen = schlick_fresnel(LdotH) * sheen * Csheen; + + diffuse_and_specular_bsdf = (M_1_PI * mix(Fd, ss, subsurface) * base_color.rgb + Fsheen) + * (1.0 - metallic) + Gs * Fs * Ds; + } + diffuse_and_specular_bsdf *= max(NdotL, 0.0); + + float CNdotL = dot(CN, light_position); + float CNdotV = dot(CN, V); + + vec3 clearcoat_bsdf = vec3(0.0); + if (CNdotL >= 0.0 && CNdotV >= 0.0 && clearcoat > 0.0) { + float CNdotH = dot(CN, H); + //float FH = schlick_fresnel(LdotH); + + // clearcoat (ior = 1.5 -> F0 = 0.04) + float Dr = GTR1(CNdotH, mix(0.1, 0.001, clearcoat_gloss)); + float Fr = fresnel_dielectric_cos(LdotH, 1.5); //mix(0.04, 1.0, FH); + float Gr = smithG_GGX(CNdotL, 0.25) * smithG_GGX(CNdotV, 0.25); + + clearcoat_bsdf = clearcoat * Gr * Fr * Dr * vec3(0.25); + } + clearcoat_bsdf *= max(CNdotL, 0.0); + + L += light_specular * (diffuse_and_specular_bsdf + clearcoat_bsdf); + } + + result = vec4(L, 1.0); +} + void node_bsdf_translucent(vec4 color, vec3 N, out vec4 result) { node_bsdf_diffuse(color, 0.0, N, result); diff --git a/source/blender/makesrna/intern/rna_nodetree.c b/source/blender/makesrna/intern/rna_nodetree.c index 8d42d746e1c..c3477644979 100644 --- a/source/blender/makesrna/intern/rna_nodetree.c +++ b/source/blender/makesrna/intern/rna_nodetree.c @@ -2995,6 +2995,15 @@ static void rna_ShaderNodeScript_update(Main *bmain, Scene *scene, PointerRNA *p ED_node_tag_update_nodetree(bmain, ntree, node); } +static void rna_ShaderNodePrincipled_update(Main *bmain, Scene *scene, PointerRNA *ptr) +{ + bNodeTree *ntree = (bNodeTree *)ptr->id.data; + bNode *node = (bNode *)ptr->data; + + nodeUpdate(ntree, node); + rna_Node_update(bmain, scene, ptr); +} + static void rna_ShaderNodeSubsurface_update(Main *bmain, Scene *scene, PointerRNA *ptr) { bNodeTree *ntree = (bNodeTree *)ptr->id.data; @@ -3254,6 +3263,12 @@ static EnumPropertyItem node_script_mode_items[] = { {0, NULL, 0, NULL, NULL} }; +static EnumPropertyItem node_principled_distribution_items[] = { + { SHD_GLOSSY_GGX, "GGX", 0, "GGX", "" }, + { SHD_GLOSSY_MULTI_GGX, "MULTI_GGX", 0, "Multiscatter GGX", "" }, + { 0, NULL, 0, NULL, NULL } +}; + /* -- Common nodes ---------------------------------------------------------- */ static void def_group_input(StructRNA *srna) @@ -4188,6 +4203,17 @@ static void def_glass(StructRNA *srna) RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_Node_update"); } +static void def_principled(StructRNA *srna) +{ + PropertyRNA *prop; + + prop = RNA_def_property(srna, "distribution", PROP_ENUM, PROP_NONE); + RNA_def_property_enum_sdna(prop, NULL, "custom1"); + RNA_def_property_enum_items(prop, node_principled_distribution_items); + RNA_def_property_ui_text(prop, "Distribution", ""); + RNA_def_property_update(prop, NC_NODE | NA_EDITED, "rna_ShaderNodePrincipled_update"); +} + static void def_refraction(StructRNA *srna) { PropertyRNA *prop; diff --git a/source/blender/nodes/CMakeLists.txt b/source/blender/nodes/CMakeLists.txt index d20881df150..3596a2aa12d 100644 --- a/source/blender/nodes/CMakeLists.txt +++ b/source/blender/nodes/CMakeLists.txt @@ -163,6 +163,7 @@ set(SRC shader/nodes/node_shader_background.c shader/nodes/node_shader_bsdf_anisotropic.c shader/nodes/node_shader_bsdf_diffuse.c + shader/nodes/node_shader_bsdf_principled.c shader/nodes/node_shader_bsdf_glass.c shader/nodes/node_shader_bsdf_glossy.c shader/nodes/node_shader_bsdf_toon.c diff --git a/source/blender/nodes/NOD_shader.h b/source/blender/nodes/NOD_shader.h index 4c0047f1d58..804c1897a27 100644 --- a/source/blender/nodes/NOD_shader.h +++ b/source/blender/nodes/NOD_shader.h @@ -106,6 +106,7 @@ void register_node_type_sh_bsdf_transparent(void); void register_node_type_sh_bsdf_velvet(void); void register_node_type_sh_bsdf_toon(void); void register_node_type_sh_bsdf_anisotropic(void); +void register_node_type_sh_bsdf_principled(void); void register_node_type_sh_emission(void); void register_node_type_sh_holdout(void); void register_node_type_sh_volume_absorption(void); diff --git a/source/blender/nodes/NOD_static_types.h b/source/blender/nodes/NOD_static_types.h index a9c0df7d7e8..e754d063397 100644 --- a/source/blender/nodes/NOD_static_types.h +++ b/source/blender/nodes/NOD_static_types.h @@ -80,6 +80,7 @@ DefNode( ShaderNode, SH_NODE_BACKGROUND, 0, "BA DefNode( ShaderNode, SH_NODE_HOLDOUT, 0, "HOLDOUT", Holdout, "Holdout", "" ) DefNode( ShaderNode, SH_NODE_BSDF_ANISOTROPIC, def_anisotropic, "BSDF_ANISOTROPIC", BsdfAnisotropic, "Anisotropic BSDF", "" ) DefNode( ShaderNode, SH_NODE_BSDF_DIFFUSE, 0, "BSDF_DIFFUSE", BsdfDiffuse, "Diffuse BSDF", "" ) +DefNode( ShaderNode, SH_NODE_BSDF_PRINCIPLED, def_principled, "BSDF_PRINCIPLED", BsdfPrincipled, "Principled BSDF", "" ) DefNode( ShaderNode, SH_NODE_BSDF_GLOSSY, def_glossy, "BSDF_GLOSSY", BsdfGlossy, "Glossy BSDF", "" ) DefNode( ShaderNode, SH_NODE_BSDF_GLASS, def_glass, "BSDF_GLASS", BsdfGlass, "Glass BSDF", "" ) DefNode( ShaderNode, SH_NODE_BSDF_REFRACTION, def_refraction, "BSDF_REFRACTION", BsdfRefraction, "Refraction BSDF", "" ) diff --git a/source/blender/nodes/shader/nodes/node_shader_bsdf_principled.c b/source/blender/nodes/shader/nodes/node_shader_bsdf_principled.c new file mode 100644 index 00000000000..8b0bfa36324 --- /dev/null +++ b/source/blender/nodes/shader/nodes/node_shader_bsdf_principled.c @@ -0,0 +1,114 @@ +/* + * ***** BEGIN GPL LICENSE BLOCK ***** + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * The Original Code is Copyright (C) 2005 Blender Foundation. + * All rights reserved. + * + * The Original Code is: all of this file. + * + * Contributor(s): none yet. + * + * ***** END GPL LICENSE BLOCK ***** + */ + +#include "../node_shader_util.h" + +/* **************** OUTPUT ******************** */ + +static bNodeSocketTemplate sh_node_bsdf_principled_in[] = { + { SOCK_RGBA, 1, N_("Base Color"), 0.8f, 0.8f, 0.8f, 1.0f, 0.0f, 1.0f}, + { SOCK_FLOAT, 1, N_("Subsurface"), 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, PROP_FACTOR}, + { SOCK_VECTOR, 1, N_("Subsurface Radius"), 1.0f, 1.0f, 1.0f, 0.0f, 0.0f, 100.0f}, + { SOCK_RGBA, 1, N_("Subsurface Color"), 0.7f, 0.1f, 0.1f, 1.0f, 0.0f, 1.0f}, + { SOCK_FLOAT, 1, N_("Metallic"), 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, PROP_FACTOR}, + { SOCK_FLOAT, 1, N_("Specular"), 0.5f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, PROP_FACTOR}, + { SOCK_FLOAT, 1, N_("Specular Tint"), 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, PROP_FACTOR}, + { SOCK_FLOAT, 1, N_("Roughness"), 0.5f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, PROP_FACTOR}, + { SOCK_FLOAT, 1, N_("Anisotropic"), 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, PROP_FACTOR}, + { SOCK_FLOAT, 1, N_("Anisotropic Rotation"), 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, PROP_FACTOR}, + { SOCK_FLOAT, 1, N_("Sheen"), 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, PROP_FACTOR}, + { SOCK_FLOAT, 1, N_("Sheen Tint"), 0.5f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, PROP_FACTOR}, + { SOCK_FLOAT, 1, N_("Clearcoat"), 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, PROP_FACTOR}, + { SOCK_FLOAT, 1, N_("Clearcoat Gloss"), 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, PROP_FACTOR}, + { SOCK_FLOAT, 1, N_("IOR"), 1.45f, 0.0f, 0.0f, 0.0f, 0.0f, 1000.0f}, + { SOCK_FLOAT, 1, N_("Transparency"), 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, PROP_FACTOR}, + { SOCK_FLOAT, 1, N_("Refraction Roughness"), 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, PROP_FACTOR}, + { SOCK_VECTOR, 1, N_("Normal"), 0.0f, 0.0f, 0.0f, 1.0f, -1.0f, 1.0f, PROP_NONE, SOCK_HIDE_VALUE}, + { SOCK_VECTOR, 1, N_("Clearcoat Normal"), 0.0f, 0.0f, 0.0f, 1.0f, -1.0f, 1.0f, PROP_NONE, SOCK_HIDE_VALUE}, + { SOCK_VECTOR, 1, N_("Tangent"), 0.0f, 0.0f, 0.0f, 1.0f, -1.0f, 1.0f, PROP_NONE, SOCK_HIDE_VALUE}, + { -1, 0, "" } +}; + +static bNodeSocketTemplate sh_node_bsdf_principled_out[] = { + { SOCK_SHADER, 0, N_("BSDF")}, + { -1, 0, "" } +}; + +static void node_shader_init_principled(bNodeTree *UNUSED(ntree), bNode *node) +{ + node->custom1 = SHD_GLOSSY_MULTI_GGX; +} + +static int node_shader_gpu_bsdf_principled(GPUMaterial *mat, bNode *UNUSED(node), bNodeExecData *UNUSED(execdata), GPUNodeStack *in, GPUNodeStack *out) +{ + // normal + if (!in[17].link) + in[17].link = GPU_builtin(GPU_VIEW_NORMAL); + else + GPU_link(mat, "direction_transform_m4v3", in[17].link, GPU_builtin(GPU_VIEW_MATRIX), &in[17].link); + + // clearcoat normal + if (!in[18].link) + in[18].link = GPU_builtin(GPU_VIEW_NORMAL); + else + GPU_link(mat, "direction_transform_m4v3", in[18].link, GPU_builtin(GPU_VIEW_MATRIX), &in[18].link); + + return GPU_stack_link(mat, "node_bsdf_principled", in, out, GPU_builtin(GPU_VIEW_POSITION)); +} + +static void node_shader_update_principled(bNodeTree *UNUSED(ntree), bNode *node) +{ + bNodeSocket *sock; + int distribution = node->custom1; + + for (sock = node->inputs.first; sock; sock = sock->next) { + if (STREQ(sock->name, "Refraction Roughness")) { + if (distribution == SHD_GLOSSY_GGX) + sock->flag &= ~SOCK_UNAVAIL; + else + sock->flag |= SOCK_UNAVAIL; + + } + } +} + +/* node type definition */ +void register_node_type_sh_bsdf_principled(void) +{ + static bNodeType ntype; + + sh_node_type_base(&ntype, SH_NODE_BSDF_PRINCIPLED, "Principled BSDF", NODE_CLASS_SHADER, 0); + node_type_compatibility(&ntype, NODE_NEW_SHADING); + node_type_socket_templates(&ntype, sh_node_bsdf_principled_in, sh_node_bsdf_principled_out); + node_type_size_preset(&ntype, NODE_SIZE_MIDDLE); + node_type_init(&ntype, node_shader_init_principled); + node_type_storage(&ntype, "", NULL, NULL); + node_type_gpu(&ntype, node_shader_gpu_bsdf_principled); + node_type_update(&ntype, node_shader_update_principled, NULL); + + nodeRegisterType(&ntype); +} |