diff options
Diffstat (limited to 'source/blender/nodes/shader/nodes/node_shader_curves.cc')
| -rw-r--r-- | source/blender/nodes/shader/nodes/node_shader_curves.cc | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/source/blender/nodes/shader/nodes/node_shader_curves.cc b/source/blender/nodes/shader/nodes/node_shader_curves.cc index e4ada06133e..8657d9e517d 100644 --- a/source/blender/nodes/shader/nodes/node_shader_curves.cc +++ b/source/blender/nodes/shader/nodes/node_shader_curves.cc @@ -27,6 +27,7 @@ namespace blender::nodes { static void sh_node_curve_vec_declare(NodeDeclarationBuilder &b) { + b.is_function_node(); b.add_input<decl::Float>("Fac").min(0.0f).max(1.0f).default_value(1.0f).subtype(PROP_FACTOR); b.add_input<decl::Vector>("Vector").min(-1.0f).max(1.0f); b.add_output<decl::Vector>("Vector"); @@ -342,3 +343,142 @@ void register_node_type_sh_curve_rgb(void) nodeRegisterType(&ntype); } + +/* **************** CURVE FLOAT ******************** */ + +namespace blender::nodes { + +static void sh_node_curve_float_declare(NodeDeclarationBuilder &b) +{ + b.add_input<decl::Float>("Factor").min(0.0f).max(1.0f).default_value(1.0f).subtype(PROP_FACTOR); + b.add_input<decl::Float>("Value").default_value(1.0f); + b.add_output<decl::Float>("Value"); +}; + +} // namespace blender::nodes + +static void node_shader_exec_curve_float(void *UNUSED(data), + int UNUSED(thread), + bNode *node, + bNodeExecData *UNUSED(execdata), + bNodeStack **in, + bNodeStack **out) +{ + float value; + float fac; + + nodestack_get_vec(&fac, SOCK_FLOAT, in[0]); + nodestack_get_vec(&value, SOCK_FLOAT, in[1]); + out[0]->vec[0] = BKE_curvemapping_evaluateF((CurveMapping *)node->storage, 0, value); + if (fac != 1.0f) { + out[0]->vec[0] = (1.0f - fac) * value + fac * out[0]->vec[0]; + } +} + +static void node_shader_init_curve_float(bNodeTree *UNUSED(ntree), bNode *node) +{ + node->storage = BKE_curvemapping_add(1, 0.0f, 0.0f, 1.0f, 1.0f); +} + +static int gpu_shader_curve_float(GPUMaterial *mat, + bNode *node, + bNodeExecData *UNUSED(execdata), + GPUNodeStack *in, + GPUNodeStack *out) +{ + float *array, layer; + int size; + + CurveMapping *cumap = (CurveMapping *)node->storage; + + BKE_curvemapping_table_F(cumap, &array, &size); + GPUNodeLink *tex = GPU_color_band(mat, size, array, &layer); + + float ext_xyz[4]; + float range_x; + + const CurveMap *cm = &cumap->cm[0]; + ext_xyz[0] = cm->mintable; + ext_xyz[2] = cm->maxtable; + range_x = 1.0f / max_ff(1e-8f, cm->maxtable - cm->mintable); + /* Compute extrapolation gradients. */ + if ((cumap->flag & CUMA_EXTEND_EXTRAPOLATE) != 0) { + ext_xyz[1] = (cm->ext_in[0] != 0.0f) ? (cm->ext_in[1] / (cm->ext_in[0] * range_x)) : 1e8f; + ext_xyz[3] = (cm->ext_out[0] != 0.0f) ? (cm->ext_out[1] / (cm->ext_out[0] * range_x)) : 1e8f; + } + else { + ext_xyz[1] = 0.0f; + ext_xyz[3] = 0.0f; + } + return GPU_stack_link(mat, + node, + "curve_float", + in, + out, + tex, + GPU_constant(&layer), + GPU_uniform(&range_x), + GPU_uniform(ext_xyz)); +} + +class CurveFloatFunction : public blender::fn::MultiFunction { + private: + const CurveMapping &cumap_; + + public: + CurveFloatFunction(const CurveMapping &cumap) : cumap_(cumap) + { + static blender::fn::MFSignature signature = create_signature(); + this->set_signature(&signature); + } + + static blender::fn::MFSignature create_signature() + { + blender::fn::MFSignatureBuilder signature{"Curve Float"}; + signature.single_input<float>("Factor"); + signature.single_input<float>("Value"); + signature.single_output<float>("Value"); + return signature.build(); + } + + void call(blender::IndexMask mask, + blender::fn::MFParams params, + blender::fn::MFContext UNUSED(context)) const override + { + const blender::VArray<float> &fac = params.readonly_single_input<float>(0, "Factor"); + const blender::VArray<float> &val_in = params.readonly_single_input<float>(1, "Value"); + blender::MutableSpan<float> val_out = params.uninitialized_single_output<float>(2, "Value"); + + for (int64_t i : mask) { + val_out[i] = BKE_curvemapping_evaluateF(&cumap_, 0, val_in[i]); + if (fac[i] != 1.0f) { + val_out[i] = (1.0f - fac[i]) * val_in[i] + fac[i] * val_out[i]; + } + } + } +}; + +static void sh_node_curve_float_build_multi_function( + blender::nodes::NodeMultiFunctionBuilder &builder) +{ + bNode &bnode = builder.node(); + CurveMapping *cumap = (CurveMapping *)bnode.storage; + BKE_curvemapping_init(cumap); + builder.construct_and_set_matching_fn<CurveFloatFunction>(*cumap); +} + +void register_node_type_sh_curve_float(void) +{ + static bNodeType ntype; + + sh_fn_node_type_base(&ntype, SH_NODE_CURVE_FLOAT, "Float Curve", NODE_CLASS_CONVERTER, 0); + ntype.declare = blender::nodes::sh_node_curve_float_declare; + node_type_init(&ntype, node_shader_init_curve_float); + node_type_size_preset(&ntype, NODE_SIZE_LARGE); + node_type_storage(&ntype, "CurveMapping", node_free_curves, node_copy_curves); + node_type_exec(&ntype, node_initexec_curves, nullptr, node_shader_exec_curve_float); + node_type_gpu(&ntype, gpu_shader_curve_float); + ntype.build_multi_function = sh_node_curve_float_build_multi_function; + + nodeRegisterType(&ntype); +} |