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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2005 Blender Foundation. All rights reserved. */
#include "node_shader_util.hh"
#include "UI_interface.h"
#include "UI_resources.h"
namespace blender::nodes::node_shader_bsdf_principled_cc {
static void node_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Color>(N_("Base Color")).default_value({0.8f, 0.8f, 0.8f, 1.0f});
b.add_input<decl::Float>(N_("Subsurface"))
.default_value(0.0f)
.min(0.0f)
.max(1.0f)
.subtype(PROP_FACTOR);
b.add_input<decl::Vector>(N_("Subsurface Radius"))
.default_value({1.0f, 0.2f, 0.1f})
.min(0.0f)
.max(100.0f)
.compact();
b.add_input<decl::Color>(N_("Subsurface Color")).default_value({0.8f, 0.8f, 0.8f, 1.0f});
b.add_input<decl::Float>(N_("Subsurface IOR"))
.default_value(1.4f)
.min(1.01f)
.max(3.8f)
.subtype(PROP_FACTOR);
b.add_input<decl::Float>(N_("Subsurface Anisotropy"))
.default_value(0.0f)
.min(0.0f)
.max(1.0f)
.subtype(PROP_FACTOR);
b.add_input<decl::Float>(N_("Metallic"))
.default_value(0.0f)
.min(0.0f)
.max(1.0f)
.subtype(PROP_FACTOR);
b.add_input<decl::Float>(N_("Specular"))
.default_value(0.5f)
.min(0.0f)
.max(1.0f)
.subtype(PROP_FACTOR);
b.add_input<decl::Float>(N_("Specular Tint"))
.default_value(0.0f)
.min(0.0f)
.max(1.0f)
.subtype(PROP_FACTOR);
b.add_input<decl::Float>(N_("Roughness"))
.default_value(0.5f)
.min(0.0f)
.max(1.0f)
.subtype(PROP_FACTOR);
b.add_input<decl::Float>(N_("Anisotropic"))
.default_value(0.0f)
.min(0.0f)
.max(1.0f)
.subtype(PROP_FACTOR);
b.add_input<decl::Float>(N_("Anisotropic Rotation"))
.default_value(0.0f)
.min(0.0f)
.max(1.0f)
.subtype(PROP_FACTOR);
b.add_input<decl::Float>(N_("Sheen"))
.default_value(0.0f)
.min(0.0f)
.max(1.0f)
.subtype(PROP_FACTOR);
b.add_input<decl::Float>(N_("Sheen Tint"))
.default_value(0.5f)
.min(0.0f)
.max(1.0f)
.subtype(PROP_FACTOR);
b.add_input<decl::Float>(N_("Clearcoat"))
.default_value(0.0f)
.min(0.0f)
.max(1.0f)
.subtype(PROP_FACTOR);
b.add_input<decl::Float>(N_("Clearcoat Roughness"))
.default_value(0.03f)
.min(0.0f)
.max(1.0f)
.subtype(PROP_FACTOR);
b.add_input<decl::Float>(N_("IOR")).default_value(1.45f).min(0.0f).max(1000.0f);
b.add_input<decl::Float>(N_("Transmission"))
.default_value(0.0f)
.min(0.0f)
.max(1.0f)
.subtype(PROP_FACTOR);
b.add_input<decl::Float>(N_("Transmission Roughness"))
.default_value(0.0f)
.min(0.0f)
.max(1.0f)
.subtype(PROP_FACTOR);
b.add_input<decl::Color>(N_("Emission")).default_value({0.0f, 0.0f, 0.0f, 1.0f});
b.add_input<decl::Float>(N_("Emission Strength")).default_value(1.0).min(0.0f).max(1000000.0f);
b.add_input<decl::Float>(N_("Alpha"))
.default_value(1.0f)
.min(0.0f)
.max(1.0f)
.subtype(PROP_FACTOR);
b.add_input<decl::Vector>(N_("Normal")).hide_value();
b.add_input<decl::Vector>(N_("Clearcoat Normal")).hide_value();
b.add_input<decl::Vector>(N_("Tangent")).hide_value();
b.add_input<decl::Float>(N_("Weight")).unavailable();
b.add_output<decl::Shader>(N_("BSDF"));
}
static void node_shader_buts_principled(uiLayout *layout, bContext * /*C*/, PointerRNA *ptr)
{
uiItemR(layout, ptr, "distribution", UI_ITEM_R_SPLIT_EMPTY_NAME, "", ICON_NONE);
uiItemR(layout, ptr, "subsurface_method", UI_ITEM_R_SPLIT_EMPTY_NAME, "", ICON_NONE);
}
static void node_shader_init_principled(bNodeTree * /*ntree*/, bNode *node)
{
node->custom1 = SHD_GLOSSY_GGX;
node->custom2 = SHD_SUBSURFACE_RANDOM_WALK;
}
#define socket_not_zero(sock) (in[sock].link || (clamp_f(in[sock].vec[0], 0.0f, 1.0f) > 1e-5f))
#define socket_not_one(sock) \
(in[sock].link || (clamp_f(in[sock].vec[0], 0.0f, 1.0f) < 1.0f - 1e-5f))
static int node_shader_gpu_bsdf_principled(GPUMaterial *mat,
bNode *node,
bNodeExecData * /*execdata*/,
GPUNodeStack *in,
GPUNodeStack *out)
{
/* Normals */
if (!in[22].link) {
GPU_link(mat, "world_normals_get", &in[22].link);
}
/* Clearcoat Normals */
if (!in[23].link) {
GPU_link(mat, "world_normals_get", &in[23].link);
}
#if 0 /* Not used at the moment. */
/* Tangents */
if (!in[24].link) {
GPUNodeLink *orco = GPU_attribute(CD_ORCO, "");
GPU_link(mat, "tangent_orco_z", orco, &in[24].link);
GPU_link(mat, "node_tangent", in[24].link, &in[24].link);
}
#endif
bool use_diffuse = socket_not_one(6) && socket_not_one(17);
bool use_subsurf = socket_not_zero(1) && use_diffuse;
bool use_refract = socket_not_one(6) && socket_not_zero(17);
bool use_transparency = socket_not_one(21);
bool use_clear = socket_not_zero(14);
eGPUMaterialFlag flag = GPU_MATFLAG_GLOSSY;
if (use_diffuse) {
flag |= GPU_MATFLAG_DIFFUSE;
}
if (use_refract) {
flag |= GPU_MATFLAG_REFRACT;
}
if (use_subsurf) {
flag |= GPU_MATFLAG_SUBSURFACE;
}
if (use_transparency) {
flag |= GPU_MATFLAG_TRANSPARENT;
}
if (use_clear) {
flag |= GPU_MATFLAG_CLEARCOAT;
}
/* Ref. T98190: Defines are optimizations for old compilers.
* Might become unnecessary with EEVEE-Next. */
if (use_diffuse == false && use_refract == false && use_clear == true) {
flag |= GPU_MATFLAG_PRINCIPLED_CLEARCOAT;
}
else if (use_diffuse == false && use_refract == false && use_clear == false) {
flag |= GPU_MATFLAG_PRINCIPLED_METALLIC;
}
else if (use_diffuse == true && use_refract == false && use_clear == false) {
flag |= GPU_MATFLAG_PRINCIPLED_DIELECTRIC;
}
else if (use_diffuse == false && use_refract == true && use_clear == false) {
flag |= GPU_MATFLAG_PRINCIPLED_GLASS;
}
else {
flag |= GPU_MATFLAG_PRINCIPLED_ANY;
}
if (use_subsurf) {
bNodeSocket *socket = (bNodeSocket *)BLI_findlink(&node->original->inputs, 2);
bNodeSocketValueRGBA *socket_data = (bNodeSocketValueRGBA *)socket->default_value;
/* For some reason it seems that the socket value is in ARGB format. */
use_subsurf = GPU_material_sss_profile_create(mat, &socket_data->value[1]);
}
float use_multi_scatter = (node->custom1 == SHD_GLOSSY_MULTI_GGX) ? 1.0f : 0.0f;
float use_sss = (use_subsurf) ? 1.0f : 0.0f;
float use_diffuse_f = (use_diffuse) ? 1.0f : 0.0f;
float use_clear_f = (use_clear) ? 1.0f : 0.0f;
float use_refract_f = (use_refract) ? 1.0f : 0.0f;
GPU_material_flag_set(mat, flag);
return GPU_stack_link(mat,
node,
"node_bsdf_principled",
in,
out,
GPU_constant(&use_diffuse_f),
GPU_constant(&use_clear_f),
GPU_constant(&use_refract_f),
GPU_constant(&use_multi_scatter),
GPU_uniform(&use_sss));
}
static void node_shader_update_principled(bNodeTree *ntree, bNode *node)
{
const int distribution = node->custom1;
const int sss_method = node->custom2;
LISTBASE_FOREACH (bNodeSocket *, sock, &node->inputs) {
if (STREQ(sock->name, "Transmission Roughness")) {
nodeSetSocketAvailability(ntree, sock, distribution == SHD_GLOSSY_GGX);
}
if (STR_ELEM(sock->name, "Subsurface IOR", "Subsurface Anisotropy")) {
nodeSetSocketAvailability(ntree, sock, sss_method != SHD_SUBSURFACE_BURLEY);
}
}
}
} // namespace blender::nodes::node_shader_bsdf_principled_cc
/* node type definition */
void register_node_type_sh_bsdf_principled()
{
namespace file_ns = blender::nodes::node_shader_bsdf_principled_cc;
static bNodeType ntype;
sh_node_type_base(&ntype, SH_NODE_BSDF_PRINCIPLED, "Principled BSDF", NODE_CLASS_SHADER);
ntype.declare = file_ns::node_declare;
ntype.draw_buttons = file_ns::node_shader_buts_principled;
node_type_size_preset(&ntype, NODE_SIZE_LARGE);
node_type_init(&ntype, file_ns::node_shader_init_principled);
node_type_gpu(&ntype, file_ns::node_shader_gpu_bsdf_principled);
node_type_update(&ntype, file_ns::node_shader_update_principled);
nodeRegisterType(&ntype);
}
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