diff options
Diffstat (limited to 'source/blender/nodes/shader/nodes/node_shader_map_range.cc')
| -rw-r--r-- | source/blender/nodes/shader/nodes/node_shader_map_range.cc | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/source/blender/nodes/shader/nodes/node_shader_map_range.cc b/source/blender/nodes/shader/nodes/node_shader_map_range.cc new file mode 100644 index 00000000000..4a6c9ec9a4d --- /dev/null +++ b/source/blender/nodes/shader/nodes/node_shader_map_range.cc @@ -0,0 +1,165 @@ +/* + * 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" + +/* **************** Map Range ******************** */ +static bNodeSocketTemplate sh_node_map_range_in[] = { + {SOCK_FLOAT, N_("Value"), 1.0f, 1.0f, 1.0f, 1.0f, 0.0f, 1.0f, PROP_NONE}, + {SOCK_FLOAT, N_("From Min"), 0.0f, 1.0f, 1.0f, 1.0f, -10000.0f, 10000.0f, PROP_NONE}, + {SOCK_FLOAT, N_("From Max"), 1.0f, 1.0f, 1.0f, 1.0f, -10000.0f, 10000.0f, PROP_NONE}, + {SOCK_FLOAT, N_("To Min"), 0.0f, 1.0f, 1.0f, 1.0f, -10000.0f, 10000.0f, PROP_NONE}, + {SOCK_FLOAT, N_("To Max"), 1.0f, 1.0f, 1.0f, 1.0f, -10000.0f, 10000.0f, PROP_NONE}, + {SOCK_FLOAT, N_("Steps"), 4.0f, 1.0f, 1.0f, 1.0f, 0.0f, 10000.0f, PROP_NONE}, + {-1, ""}, +}; +static bNodeSocketTemplate sh_node_map_range_out[] = { + {SOCK_FLOAT, N_("Result")}, + {-1, ""}, +}; + +static void node_shader_update_map_range(bNodeTree *UNUSED(ntree), bNode *node) +{ + bNodeSocket *sockSteps = nodeFindSocket(node, SOCK_IN, "Steps"); + nodeSetSocketAvailability(sockSteps, node->custom2 == NODE_MAP_RANGE_STEPPED); +} + +static void node_shader_init_map_range(bNodeTree *UNUSED(ntree), bNode *node) +{ + node->custom1 = true; /* use_clamp */ + node->custom2 = NODE_MAP_RANGE_LINEAR; /* interpolation */ +} + +static const char *gpu_shader_get_name(int mode) +{ + switch (mode) { + case NODE_MAP_RANGE_LINEAR: + return "map_range_linear"; + case NODE_MAP_RANGE_STEPPED: + return "map_range_stepped"; + case NODE_MAP_RANGE_SMOOTHSTEP: + return "map_range_smoothstep"; + case NODE_MAP_RANGE_SMOOTHERSTEP: + return "map_range_smootherstep"; + } + + return nullptr; +} + +static int gpu_shader_map_range(GPUMaterial *mat, + bNode *node, + bNodeExecData *UNUSED(execdata), + GPUNodeStack *in, + GPUNodeStack *out) +{ + const char *name = gpu_shader_get_name(node->custom2); + + int ret = 0; + if (name != nullptr) { + ret = GPU_stack_link(mat, node, name, in, out); + } + else { + ret = GPU_stack_link(mat, node, "map_range_linear", in, out); + } + if (ret && node->custom1 && + !ELEM(node->custom2, NODE_MAP_RANGE_SMOOTHSTEP, NODE_MAP_RANGE_SMOOTHERSTEP)) { + GPU_link(mat, "clamp_range", out[0].link, in[3].link, in[4].link, &out[0].link); + } + return ret; +} + +class MapRangeFunction : public blender::fn::MultiFunction { + private: + bool clamp_; + + public: + MapRangeFunction(bool clamp) : clamp_(clamp) + { + blender::fn::MFSignatureBuilder signature = this->get_builder("Map Range"); + signature.single_input<float>("Value"); + signature.single_input<float>("From Min"); + signature.single_input<float>("From Max"); + signature.single_input<float>("To Min"); + signature.single_input<float>("To Max"); + signature.single_output<float>("Result"); + } + + void call(blender::IndexMask mask, + blender::fn::MFParams params, + blender::fn::MFContext UNUSED(context)) const override + { + blender::fn::VSpan<float> values = params.readonly_single_input<float>(0, "Value"); + blender::fn::VSpan<float> from_min = params.readonly_single_input<float>(1, "From Min"); + blender::fn::VSpan<float> from_max = params.readonly_single_input<float>(2, "From Max"); + blender::fn::VSpan<float> to_min = params.readonly_single_input<float>(3, "To Min"); + blender::fn::VSpan<float> to_max = params.readonly_single_input<float>(4, "To Max"); + blender::MutableSpan<float> results = params.uninitialized_single_output<float>(5, "Result"); + + for (int64_t i : mask) { + float factor = safe_divide(values[i] - from_min[i], from_max[i] - from_min[i]); + results[i] = to_min[i] + factor * (to_max[i] - to_min[i]); + } + + if (clamp_) { + for (int64_t i : mask) { + CLAMP(results[i], 0.0f, 1.0f); + } + } + } +}; + +static void sh_node_map_range_expand_in_mf_network(blender::nodes::NodeMFNetworkBuilder &builder) +{ + bNode &bnode = builder.bnode(); + bool clamp = bnode.custom1 != 0; + int interpolation_type = bnode.custom2; + + if (interpolation_type == NODE_MAP_RANGE_LINEAR) { + static MapRangeFunction fn_with_clamp{true}; + static MapRangeFunction fn_without_clamp{false}; + + if (clamp) { + builder.set_matching_fn(fn_with_clamp); + } + else { + builder.set_matching_fn(fn_without_clamp); + } + } + else { + builder.set_not_implemented(); + } +} + +void register_node_type_sh_map_range(void) +{ + static bNodeType ntype; + + sh_fn_node_type_base(&ntype, SH_NODE_MAP_RANGE, "Map Range", NODE_CLASS_CONVERTOR, 0); + node_type_socket_templates(&ntype, sh_node_map_range_in, sh_node_map_range_out); + node_type_init(&ntype, node_shader_init_map_range); + node_type_update(&ntype, node_shader_update_map_range); + node_type_gpu(&ntype, gpu_shader_map_range); + ntype.expand_in_mf_network = sh_node_map_range_expand_in_mf_network; + + nodeRegisterType(&ntype); +} |