diff options
Diffstat (limited to 'source/blender/nodes/shader/nodes/node_shader_mix_rgb.cc')
| -rw-r--r-- | source/blender/nodes/shader/nodes/node_shader_mix_rgb.cc | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/source/blender/nodes/shader/nodes/node_shader_mix_rgb.cc b/source/blender/nodes/shader/nodes/node_shader_mix_rgb.cc new file mode 100644 index 00000000000..b89e0527eed --- /dev/null +++ b/source/blender/nodes/shader/nodes/node_shader_mix_rgb.cc @@ -0,0 +1,198 @@ +/* + * 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" + +namespace blender::nodes { + +static void sh_node_mix_rgb_declare(NodeDeclarationBuilder &b) +{ + b.is_function_node(); + b.add_input<decl::Float>(N_("Fac")).default_value(0.5f).min(0.0f).max(1.0f).subtype(PROP_FACTOR); + b.add_input<decl::Color>(N_("Color1")).default_value({0.5f, 0.5f, 0.5f, 1.0f}); + b.add_input<decl::Color>(N_("Color2")).default_value({0.5f, 0.5f, 0.5f, 1.0f}); + b.add_output<decl::Color>(N_("Color")); +}; + +} // namespace blender::nodes + +static void node_shader_exec_mix_rgb(void *UNUSED(data), + int UNUSED(thread), + bNode *node, + bNodeExecData *UNUSED(execdata), + bNodeStack **in, + bNodeStack **out) +{ + /* stack order in: fac, col1, col2 */ + /* stack order out: col */ + float col[3]; + float fac; + float vec[3]; + + nodestack_get_vec(&fac, SOCK_FLOAT, in[0]); + CLAMP(fac, 0.0f, 1.0f); + + nodestack_get_vec(col, SOCK_VECTOR, in[1]); + nodestack_get_vec(vec, SOCK_VECTOR, in[2]); + + ramp_blend(node->custom1, col, fac, vec); + if (node->custom2 & SHD_MIXRGB_CLAMP) { + CLAMP3(col, 0.0f, 1.0f); + } + copy_v3_v3(out[0]->vec, col); +} + +static const char *gpu_shader_get_name(int mode) +{ + switch (mode) { + case MA_RAMP_BLEND: + return "mix_blend"; + case MA_RAMP_ADD: + return "mix_add"; + case MA_RAMP_MULT: + return "mix_mult"; + case MA_RAMP_SUB: + return "mix_sub"; + case MA_RAMP_SCREEN: + return "mix_screen"; + case MA_RAMP_DIV: + return "mix_div"; + case MA_RAMP_DIFF: + return "mix_diff"; + case MA_RAMP_DARK: + return "mix_dark"; + case MA_RAMP_LIGHT: + return "mix_light"; + case MA_RAMP_OVERLAY: + return "mix_overlay"; + case MA_RAMP_DODGE: + return "mix_dodge"; + case MA_RAMP_BURN: + return "mix_burn"; + case MA_RAMP_HUE: + return "mix_hue"; + case MA_RAMP_SAT: + return "mix_sat"; + case MA_RAMP_VAL: + return "mix_val"; + case MA_RAMP_COLOR: + return "mix_color"; + case MA_RAMP_SOFT: + return "mix_soft"; + case MA_RAMP_LINEAR: + return "mix_linear"; + } + + return nullptr; +} + +static int gpu_shader_mix_rgb(GPUMaterial *mat, + bNode *node, + bNodeExecData *UNUSED(execdata), + GPUNodeStack *in, + GPUNodeStack *out) +{ + const char *name = gpu_shader_get_name(node->custom1); + + if (name != nullptr) { + int ret = GPU_stack_link(mat, node, name, in, out); + if (ret && node->custom2 & SHD_MIXRGB_CLAMP) { + const float min[3] = {0.0f, 0.0f, 0.0f}; + const float max[3] = {1.0f, 1.0f, 1.0f}; + GPU_link( + mat, "clamp_color", out[0].link, GPU_constant(min), GPU_constant(max), &out[0].link); + } + return ret; + } + + return 0; +} + +class MixRGBFunction : public blender::fn::MultiFunction { + private: + bool clamp_; + int type_; + + public: + MixRGBFunction(bool clamp, int type) : clamp_(clamp), type_(type) + { + static blender::fn::MFSignature signature = create_signature(); + this->set_signature(&signature); + } + + static blender::fn::MFSignature create_signature() + { + blender::fn::MFSignatureBuilder signature{"MixRGB"}; + signature.single_input<float>("Fac"); + signature.single_input<blender::ColorGeometry4f>("Color1"); + signature.single_input<blender::ColorGeometry4f>("Color2"); + 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> &col1 = + params.readonly_single_input<blender::ColorGeometry4f>(1, "Color1"); + const blender::VArray<blender::ColorGeometry4f> &col2 = + params.readonly_single_input<blender::ColorGeometry4f>(2, "Color2"); + blender::MutableSpan<blender::ColorGeometry4f> results = + params.uninitialized_single_output<blender::ColorGeometry4f>(3, "Color"); + + for (int64_t i : mask) { + results[i] = col1[i]; + ramp_blend(type_, results[i], clamp_f(fac[i], 0.0f, 1.0f), col2[i]); + } + + if (clamp_) { + for (int64_t i : mask) { + clamp_v3(results[i], 0.0f, 1.0f); + } + } + } +}; + +static void sh_node_mix_rgb_build_multi_function(blender::nodes::NodeMultiFunctionBuilder &builder) +{ + bNode &node = builder.node(); + bool clamp = node.custom2 & SHD_MIXRGB_CLAMP; + int mix_type = node.custom1; + builder.construct_and_set_matching_fn<MixRGBFunction>(clamp, mix_type); +} + +void register_node_type_sh_mix_rgb() +{ + static bNodeType ntype; + + sh_fn_node_type_base(&ntype, SH_NODE_MIX_RGB, "Mix", NODE_CLASS_OP_COLOR, 0); + ntype.declare = blender::nodes::sh_node_mix_rgb_declare; + ntype.labelfunc = node_blend_label; + node_type_exec(&ntype, nullptr, nullptr, node_shader_exec_mix_rgb); + node_type_gpu(&ntype, gpu_shader_mix_rgb); + ntype.build_multi_function = sh_node_mix_rgb_build_multi_function; + + nodeRegisterType(&ntype); +} |