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 | 342 |
1 files changed, 342 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 new file mode 100644 index 00000000000..f1d5040a292 --- /dev/null +++ b/source/blender/nodes/shader/nodes/node_shader_curves.cc @@ -0,0 +1,342 @@ +/* + * 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. + */ + +/** \file + * \ingroup shdnodes + */ + +#include "node_shader_util.h" + +/* **************** CURVE VEC ******************** */ +static bNodeSocketTemplate sh_node_curve_vec_in[] = { + {SOCK_FLOAT, N_("Fac"), 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f, PROP_FACTOR}, + {SOCK_VECTOR, N_("Vector"), 0.0f, 0.0f, 0.0f, 1.0f, -1.0f, 1.0f, PROP_NONE}, + {-1, ""}, +}; + +static bNodeSocketTemplate sh_node_curve_vec_out[] = { + {SOCK_VECTOR, N_("Vector")}, + {-1, ""}, +}; + +static void node_shader_exec_curve_vec(void *UNUSED(data), + int UNUSED(thread), + bNode *node, + bNodeExecData *UNUSED(execdata), + bNodeStack **in, + bNodeStack **out) +{ + float vec[3]; + + /* stack order input: vec */ + /* stack order output: vec */ + nodestack_get_vec(vec, SOCK_VECTOR, in[1]); + BKE_curvemapping_evaluate3F((CurveMapping *)node->storage, out[0]->vec, vec); +} + +static void node_shader_init_curve_vec(bNodeTree *UNUSED(ntree), bNode *node) +{ + node->storage = BKE_curvemapping_add(3, -1.0f, -1.0f, 1.0f, 1.0f); +} + +static int gpu_shader_curve_vec(GPUMaterial *mat, + bNode *node, + bNodeExecData *UNUSED(execdata), + GPUNodeStack *in, + GPUNodeStack *out) +{ + float *array, layer; + int size; + + CurveMapping *cumap = (CurveMapping *)node->storage; + + BKE_curvemapping_table_RGBA(cumap, &array, &size); + GPUNodeLink *tex = GPU_color_band(mat, size, array, &layer); + + float ext_xyz[3][4]; + float range_xyz[3]; + + for (int a = 0; a < 3; a++) { + const CurveMap *cm = &cumap->cm[a]; + ext_xyz[a][0] = cm->mintable; + ext_xyz[a][2] = cm->maxtable; + range_xyz[a] = 1.0f / max_ff(1e-8f, cm->maxtable - cm->mintable); + /* Compute extrapolation gradients. */ + if ((cumap->flag & CUMA_EXTEND_EXTRAPOLATE) != 0) { + ext_xyz[a][1] = (cm->ext_in[0] != 0.0f) ? (cm->ext_in[1] / (cm->ext_in[0] * range_xyz[a])) : + 1e8f; + ext_xyz[a][3] = (cm->ext_out[0] != 0.0f) ? + (cm->ext_out[1] / (cm->ext_out[0] * range_xyz[a])) : + 1e8f; + } + else { + ext_xyz[a][1] = 0.0f; + ext_xyz[a][3] = 0.0f; + } + } + + return GPU_stack_link(mat, + node, + "curves_vec", + in, + out, + tex, + GPU_constant(&layer), + GPU_uniform(range_xyz), + GPU_uniform(ext_xyz[0]), + GPU_uniform(ext_xyz[1]), + GPU_uniform(ext_xyz[2])); +} + +class CurveVecFunction : public blender::fn::MultiFunction { + private: + const CurveMapping &cumap_; + + public: + CurveVecFunction(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 Vec"}; + signature.single_input<float>("Fac"); + signature.single_input<blender::float3>("Vector"); + signature.single_output<blender::float3>("Vector"); + 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, "Fac"); + const blender::VArray<blender::float3> &vec_in = params.readonly_single_input<blender::float3>( + 1, "Vector"); + blender::MutableSpan<blender::float3> vec_out = + params.uninitialized_single_output<blender::float3>(2, "Vector"); + + for (int64_t i : mask) { + BKE_curvemapping_evaluate3F(&cumap_, vec_out[i], vec_in[i]); + if (fac[i] != 1.0f) { + interp_v3_v3v3(vec_out[i], vec_in[i], vec_out[i], fac[i]); + } + } + } +}; + +static void sh_node_curve_vec_expand_in_mf_network(blender::nodes::NodeMFNetworkBuilder &builder) +{ + bNode &bnode = builder.bnode(); + CurveMapping *cumap = (CurveMapping *)bnode.storage; + BKE_curvemapping_init(cumap); + builder.construct_and_set_matching_fn<CurveVecFunction>(*cumap); +} + +void register_node_type_sh_curve_vec(void) +{ + static bNodeType ntype; + + sh_fn_node_type_base(&ntype, SH_NODE_CURVE_VEC, "Vector Curves", NODE_CLASS_OP_VECTOR, 0); + node_type_socket_templates(&ntype, sh_node_curve_vec_in, sh_node_curve_vec_out); + node_type_init(&ntype, node_shader_init_curve_vec); + 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_vec); + node_type_gpu(&ntype, gpu_shader_curve_vec); + ntype.expand_in_mf_network = sh_node_curve_vec_expand_in_mf_network; + + nodeRegisterType(&ntype); +} + +/* **************** CURVE RGB ******************** */ +static bNodeSocketTemplate sh_node_curve_rgb_in[] = { + {SOCK_FLOAT, N_("Fac"), 1.0f, 0.0f, 0.0f, 1.0f, -1.0f, 1.0f, PROP_FACTOR}, + {SOCK_RGBA, N_("Color"), 0.0f, 0.0f, 0.0f, 1.0f}, + {-1, ""}, +}; + +static bNodeSocketTemplate sh_node_curve_rgb_out[] = { + {SOCK_RGBA, N_("Color")}, + {-1, ""}, +}; + +static void node_shader_exec_curve_rgb(void *UNUSED(data), + int UNUSED(thread), + bNode *node, + bNodeExecData *UNUSED(execdata), + bNodeStack **in, + bNodeStack **out) +{ + float vec[3]; + float fac; + + /* stack order input: vec */ + /* stack order output: vec */ + nodestack_get_vec(&fac, SOCK_FLOAT, in[0]); + nodestack_get_vec(vec, SOCK_VECTOR, in[1]); + BKE_curvemapping_evaluateRGBF((CurveMapping *)node->storage, out[0]->vec, vec); + if (fac != 1.0f) { + interp_v3_v3v3(out[0]->vec, vec, out[0]->vec, fac); + } +} + +static void node_shader_init_curve_rgb(bNodeTree *UNUSED(ntree), bNode *node) +{ + node->storage = BKE_curvemapping_add(4, 0.0f, 0.0f, 1.0f, 1.0f); +} + +static int gpu_shader_curve_rgb(GPUMaterial *mat, + bNode *node, + bNodeExecData *UNUSED(execdata), + GPUNodeStack *in, + GPUNodeStack *out) +{ + float *array, layer; + int size; + bool use_opti = true; + + CurveMapping *cumap = (CurveMapping *)node->storage; + + BKE_curvemapping_init(cumap); + BKE_curvemapping_table_RGBA(cumap, &array, &size); + GPUNodeLink *tex = GPU_color_band(mat, size, array, &layer); + + float ext_rgba[4][4]; + float range_rgba[4]; + + for (int a = 0; a < CM_TOT; a++) { + const CurveMap *cm = &cumap->cm[a]; + ext_rgba[a][0] = cm->mintable; + ext_rgba[a][2] = cm->maxtable; + range_rgba[a] = 1.0f / max_ff(1e-8f, cm->maxtable - cm->mintable); + /* Compute extrapolation gradients. */ + if ((cumap->flag & CUMA_EXTEND_EXTRAPOLATE) != 0) { + ext_rgba[a][1] = (cm->ext_in[0] != 0.0f) ? + (cm->ext_in[1] / (cm->ext_in[0] * range_rgba[a])) : + 1e8f; + ext_rgba[a][3] = (cm->ext_out[0] != 0.0f) ? + (cm->ext_out[1] / (cm->ext_out[0] * range_rgba[a])) : + 1e8f; + } + else { + ext_rgba[a][1] = 0.0f; + ext_rgba[a][3] = 0.0f; + } + + /* Check if rgb comps are just linear. */ + if (a < 3) { + if (range_rgba[a] != 1.0f || ext_rgba[a][1] != 1.0f || ext_rgba[a][2] != 1.0f || + cm->totpoint != 2 || cm->curve[0].x != 0.0f || cm->curve[0].y != 0.0f || + cm->curve[1].x != 1.0f || cm->curve[1].y != 1.0f) { + use_opti = false; + } + } + } + + if (use_opti) { + return GPU_stack_link(mat, + node, + "curves_rgb_opti", + in, + out, + tex, + GPU_constant(&layer), + GPU_uniform(range_rgba), + GPU_uniform(ext_rgba[3])); + } + + return GPU_stack_link(mat, + node, + "curves_rgb", + in, + out, + tex, + GPU_constant(&layer), + GPU_uniform(range_rgba), + GPU_uniform(ext_rgba[0]), + GPU_uniform(ext_rgba[1]), + GPU_uniform(ext_rgba[2]), + GPU_uniform(ext_rgba[3])); +} + +class CurveRGBFunction : public blender::fn::MultiFunction { + private: + const CurveMapping &cumap_; + + public: + CurveRGBFunction(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 RGB"}; + signature.single_input<float>("Fac"); + signature.single_input<blender::ColorGeometry4f>("Color"); + signature.single_output<blender::ColorGeometry4f>("Color"); + 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, "Fac"); + const blender::VArray<blender::ColorGeometry4f> &col_in = + params.readonly_single_input<blender::ColorGeometry4f>(1, "Color"); + blender::MutableSpan<blender::ColorGeometry4f> col_out = + params.uninitialized_single_output<blender::ColorGeometry4f>(2, "Color"); + + for (int64_t i : mask) { + BKE_curvemapping_evaluateRGBF(&cumap_, col_out[i], col_in[i]); + if (fac[i] != 1.0f) { + interp_v3_v3v3(col_out[i], col_in[i], col_out[i], fac[i]); + } + } + } +}; + +static void sh_node_curve_rgb_expand_in_mf_network(blender::nodes::NodeMFNetworkBuilder &builder) +{ + bNode &bnode = builder.bnode(); + CurveMapping *cumap = (CurveMapping *)bnode.storage; + BKE_curvemapping_init(cumap); + builder.construct_and_set_matching_fn<CurveRGBFunction>(*cumap); +} + +void register_node_type_sh_curve_rgb(void) +{ + static bNodeType ntype; + + sh_fn_node_type_base(&ntype, SH_NODE_CURVE_RGB, "RGB Curves", NODE_CLASS_OP_COLOR, 0); + node_type_socket_templates(&ntype, sh_node_curve_rgb_in, sh_node_curve_rgb_out); + node_type_init(&ntype, node_shader_init_curve_rgb); + 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_rgb); + node_type_gpu(&ntype, gpu_shader_curve_rgb); + ntype.expand_in_mf_network = sh_node_curve_rgb_expand_in_mf_network; + + nodeRegisterType(&ntype); +} |